JPH04198112A - Flexible resin composition - Google Patents
Flexible resin compositionInfo
- Publication number
- JPH04198112A JPH04198112A JP2325174A JP32517490A JPH04198112A JP H04198112 A JPH04198112 A JP H04198112A JP 2325174 A JP2325174 A JP 2325174A JP 32517490 A JP32517490 A JP 32517490A JP H04198112 A JPH04198112 A JP H04198112A
- Authority
- JP
- Japan
- Prior art keywords
- meth
- acrylate
- component
- glass transition
- transition temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011342 resin composition Substances 0.000 title claims abstract description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 41
- 239000000178 monomer Substances 0.000 claims abstract description 40
- 229920000642 polymer Polymers 0.000 claims abstract description 36
- 230000009477 glass transition Effects 0.000 claims abstract description 18
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 13
- 239000003505 polymerization initiator Substances 0.000 claims abstract description 7
- 229920001577 copolymer Polymers 0.000 claims abstract description 5
- 229920001519 homopolymer Polymers 0.000 claims abstract description 5
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 12
- RUMACXVDVNRZJZ-UHFFFAOYSA-N 2-methylpropyl 2-methylprop-2-enoate Chemical compound CC(C)COC(=O)C(C)=C RUMACXVDVNRZJZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 41
- 239000011347 resin Substances 0.000 abstract description 19
- 229920005989 resin Polymers 0.000 abstract description 19
- 210000000214 mouth Anatomy 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000006116 polymerization reaction Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 229920000178 Acrylic resin Polymers 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 6
- 239000000113 methacrylic resin Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 150000002978 peroxides Chemical class 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 210000001909 alveolar process Anatomy 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 239000004945 silicone rubber Substances 0.000 description 4
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 3
- 239000001506 calcium phosphate Substances 0.000 description 3
- 239000002612 dispersion medium Substances 0.000 description 3
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 3
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 210000004877 mucosa Anatomy 0.000 description 3
- 210000004400 mucous membrane Anatomy 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000011505 plaster Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 238000010557 suspension polymerization reaction Methods 0.000 description 3
- 150000003512 tertiary amines Chemical class 0.000 description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 3
- 229940078499 tricalcium phosphate Drugs 0.000 description 3
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 3
- 235000019731 tricalcium phosphate Nutrition 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- -1 2-ethylhexyl Chemical group 0.000 description 2
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 2
- VVBLNCFGVYUYGU-UHFFFAOYSA-N 4,4'-Bis(dimethylamino)benzophenone Chemical compound C1=CC(N(C)C)=CC=C1C(=O)C1=CC=C(N(C)C)C=C1 VVBLNCFGVYUYGU-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000001055 chewing effect Effects 0.000 description 2
- NEHNMFOYXAPHSD-UHFFFAOYSA-N citronellal Chemical compound O=CCC(C)CCC=C(C)C NEHNMFOYXAPHSD-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- TZMFJUDUGYTVRY-UHFFFAOYSA-N pentane-2,3-dione Chemical compound CCC(=O)C(C)=O TZMFJUDUGYTVRY-UHFFFAOYSA-N 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 150000003455 sulfinic acids Chemical class 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- VNQXSTWCDUXYEZ-UHFFFAOYSA-N 1,7,7-trimethylbicyclo[2.2.1]heptane-2,3-dione Chemical compound C1CC2(C)C(=O)C(=O)C1C2(C)C VNQXSTWCDUXYEZ-UHFFFAOYSA-N 0.000 description 1
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- FLFWJIBUZQARMD-UHFFFAOYSA-N 2-mercapto-1,3-benzoxazole Chemical compound C1=CC=C2OC(S)=NC2=C1 FLFWJIBUZQARMD-UHFFFAOYSA-N 0.000 description 1
- YYVYAPXYZVYDHN-UHFFFAOYSA-N 9,10-phenanthroquinone Chemical compound C1=CC=C2C(=O)C(=O)C3=CC=CC=C3C2=C1 YYVYAPXYZVYDHN-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 206010003694 Atrophy Diseases 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 208000006386 Bone Resorption Diseases 0.000 description 1
- QSJXEFYPDANLFS-UHFFFAOYSA-N Diacetyl Chemical group CC(=O)C(C)=O QSJXEFYPDANLFS-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- ROHFNLRQFUQHCH-YFKPBYRVSA-N L-leucine Chemical compound CC(C)C[C@H](N)C(O)=O ROHFNLRQFUQHCH-YFKPBYRVSA-N 0.000 description 1
- ROHFNLRQFUQHCH-UHFFFAOYSA-N Leucine Natural products CC(C)CC(N)C(O)=O ROHFNLRQFUQHCH-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- KYIKRXIYLAGAKQ-UHFFFAOYSA-N abcn Chemical compound C1CCCCC1(C#N)N=NC1(C#N)CCCCC1 KYIKRXIYLAGAKQ-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 230000024279 bone resorption Effects 0.000 description 1
- 229930006711 bornane-2,3-dione Natural products 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229930003633 citronellal Natural products 0.000 description 1
- 235000000983 citronellal Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- VTXVGVNLYGSIAR-UHFFFAOYSA-N decane-1-thiol Chemical compound CCCCCCCCCCS VTXVGVNLYGSIAR-UHFFFAOYSA-N 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- HFJRKMMYBMWEAD-UHFFFAOYSA-N dodecanal Chemical compound CCCCCCCCCCCC=O HFJRKMMYBMWEAD-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229940089454 lauryl aldehyde Drugs 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000002200 mouth mucosa Anatomy 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- NBOMNTLFRHMDEZ-UHFFFAOYSA-N thiosalicylic acid Chemical compound OC(=O)C1=CC=CC=C1S NBOMNTLFRHMDEZ-UHFFFAOYSA-N 0.000 description 1
- 229940103494 thiosalicylic acid Drugs 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- CMHHITPYCHHOGT-UHFFFAOYSA-N tributylborane Chemical compound CCCCB(CCCC)CCCC CMHHITPYCHHOGT-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Graft Or Block Polymers (AREA)
- Dental Preparations (AREA)
- Dental Prosthetics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、軟質樹脂組成物に関し、より詳しくは、特に
レジン義歯床の裏装材として有用であり、さらに、口腔
内において直接義歯床に裏装することのできる軟質樹脂
組成物に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a soft resin composition, and more specifically, it is particularly useful as a lining material for resin denture bases, and furthermore, it can be applied directly to denture bases in the oral cavity. The present invention relates to a soft resin composition that can be lined.
義歯、特に総義歯は、義歯と義歯床によって構成されて
おり、また、その材質は咬合力及び咀噛圧などに耐え得
るように比較的硬質のレジン（−数的にはアクリル系樹
脂）で構成されているのが一般的であるが、総義歯の対
象患者は高齢者が多いため、歯槽堤は一般に骨吸収が著
しく、その面積当りで負担する咬合力は大きくなり、ま
た、歯槽堤粘膜も老人性萎縮によりひ薄になるので、咬
合、咀噛圧の衝撃は緩和されずに直接歯槽骨に伝えられ
ることになる。このため、硬いレジン義歯床と硬い歯槽
骨の間に挟まれた薄い粘膜は咬合を繰り返す度に傷つき
痛みを発生することになる。Dentures, especially complete dentures, are composed of a denture and a denture base, and the material is a relatively hard resin (numerically acrylic resin) to withstand occlusal force and chewing pressure. However, since many patients for complete dentures are elderly, the alveolar ridge generally undergoes significant bone resorption, and the occlusal force borne per area is large, and the alveolar ridge mucosa As the teeth become thinner due to senile atrophy, the impact of occlusion and chewing pressure is transmitted directly to the alveolar bone without being alleviated. For this reason, the thin mucous membrane sandwiched between the hard resin denture base and the hard alveolar bone gets damaged and causes pain every time the patient bites repeatedly.
このような難症例においては、通常レジン義歯床の粘膜
と接する面に軟らかい材料（軟質裏装材）で裏装して、
失われた顎間粘膜の粘弾性を補い、咬合時の衝撃を緩和
することが必要となり、このため従来より種々の軟質裏
装材、例えは、アクリル樹脂あるいは塩化ビニル樹脂に
可塑剤を配合して軟質化せしめてなる裏装材、シリコー
ン樹脂系裏装材、フッソ樹脂系裏装材、ポリオレフィン
系裏装材、シリコーンゴム系裏装材なとが用いられ、ま
た、音間的な用途に対しては義歯安定材が用いられてい
る。In such difficult cases, the surface of the resin denture base that comes into contact with the mucous membrane is usually lined with a soft material (soft lining material).
It is necessary to compensate for the lost viscoelasticity of the intermaxillary mucosa and to alleviate the impact during occlusion.For this reason, various soft lining materials, such as acrylic resin or vinyl chloride resin, have traditionally been mixed with plasticizers. Lining materials made of soft resin, silicone resin lining materials, fluorine resin lining materials, polyolefin lining materials, and silicone rubber lining materials are used. For this purpose, denture stabilizers are used.
しかしながら、上記従来の裏装材ないし義歯安定剤には
以下のごとき問題点がある。However, the above-mentioned conventional lining materials or denture stabilizers have the following problems.
（１）アクリル樹脂系及び塩化ビニル樹脂系の裏装材は
、口腔内において可塑剤の溶出が起こり易く、数カ月の
使用で硬化、脆弱化、退色などの特性劣化が生しると共
に、溶出する可塑剤と入れ替わる状態で水分を吸収し、
微生物付着の原因となるなとの問題点があり、長期間の
使用に耐えられない。(1) Acrylic resin-based and vinyl chloride resin-based lining materials are prone to elution of plasticizers in the oral cavity, and after several months of use, properties such as hardening, brittleness, and discoloration occur, as well as elution. Absorbs moisture while replacing plasticizer,
There is a problem that it does not cause the adhesion of microorganisms, so it cannot withstand long-term use.
（２）シリコーン樹脂系裏装材は、吸水性が大きいため
に微生物が付着し易く、また、レシン義歯床から剥離し
易いという問題点があるため、上記（１）同様に長期の
使用に耐えられない。(2) Silicone resin lining materials have the problem of being easily attached to microorganisms due to their high water absorption, and also being easy to peel off from the resin denture base, so they cannot withstand long-term use as in (1) above. I can't.
（３）フッソ樹脂系裏装材は粘弾性に乏しく、咬合時の
衝撃緩和のためのクツション効果が十分てない。(3) Fluorine resin-based lining materials have poor viscoelasticity and do not have sufficient cushioning effects to cushion shocks during occlusion.
（４）ポリオレフィン系裏装材は成形温度が高いため、
レジン義歯床を変形させる恐れがあり、また義歯床との
接着力を高めるために特殊な接着剤、専用の加熱器など
を必要とし、操作が煩雑になることから実用性に乏しい
。(4) Polyolefin lining material has a high molding temperature, so
There is a risk of deforming the resin denture base, and it requires a special adhesive and a dedicated heater to increase the adhesive strength with the denture base, making the operation complicated and therefore impractical.
（５）シリコーンゴム系裏装材は安定性に優れているが
、レジン義歯床との十分な接着が得られず、また裏装の
ための操作が煩雑である。(5) Although silicone rubber lining materials have excellent stability, they do not provide sufficient adhesion to resin denture bases, and the lining operations are complicated.
（６）義歯安定剤は、使用期間が長くなると粘稠度が増
加して可塑性が低下し、その結果不適合義歯の適合性及
び辺縁封鎖性の向上によって義歯床の維持、安定化及び
支持を高めるという目的を十分果たし得ないだけてなく
、口腔組織に障害を与えることも多く、また、圧縮応力
が小さく弾性が乏しいため、咬合圧に対するクツション
効果が十分とはいえず、口腔粘膜の疼痛再発の原因とな
っている。(6) As denture adhesives are used for a long time, their viscosity increases and their plasticity decreases, resulting in better maintenance, stabilization, and support of denture bases by improving the fit and margin sealing of ill-fitting dentures. Not only does it fail to achieve its purpose of increasing the pressure, it often causes damage to the oral tissues.Also, because the compressive stress is small and elasticity is poor, the cushioning effect against occlusal pressure is not sufficient, leading to recurrence of pain in the oral mucosa. It is the cause of
したがって、本発明は、従来の裏装材における上記のよ
うな問題点の解決を目的とするもので、適度な粘弾性を
有し、レジン義歯床との永続的接着性及び耐久性に優れ
ると共に、特殊な歯科技工操作を必要とすることなく裏
装面に対して容易に装着可能であるなど、特にレジン義
歯床用の裏装材として有用な軟質樹脂組成物を提供する
ものである。Therefore, the present invention aims to solve the above-mentioned problems with conventional lining materials, and has appropriate viscoelasticity, excellent permanent adhesiveness and durability with resin denture bases, and The object of the present invention is to provide a soft resin composition that is particularly useful as a lining material for resin denture bases because it can be easily attached to the lining surface without requiring any special dental technique operations.
本発明によって提供される軟質樹脂組成物は、下記（ａ
）、（ｂ）、（ｃ）及び（ｄ）の成分から形成されてな
ることを特徴としている。The soft resin composition provided by the present invention includes the following (a)
), (b), (c) and (d).
成分（ａ）； ガラス転移温度が１０〜５０℃のアルキ
ル（メタ）アクリレートのホモポリマー及び／またはコ
ポリマーの粉末、
成分（ｂ）；ガラス転移温度が−５〜−９０℃のポリマ
ーを構成し得る１種以上のアルキル（メタ）アクリレー
トモノマー、
成分（ｃ）； 多官能（メタ）アクリレートモノマー、
成分（ｄ）； 重合開始剤、
以下、本発明の詳細な説明するにあたり、レジン義歯床
用の裏装材として用いる場合を例にするが、これは理解
を容易にするための一例であって、本発明を限定するも
のではない。Component (a); Powder of homopolymer and/or copolymer of alkyl (meth)acrylate having a glass transition temperature of 10 to 50°C; Component (b); may constitute a polymer having a glass transition temperature of -5 to -90°C. one or more alkyl (meth)acrylate monomers; component (c); polyfunctional (meth)acrylate monomers;
Component (d); Polymerization initiator Below, in explaining the present invention in detail, the case where it is used as a lining material for a resin denture base will be exemplified, but this is just an example for ease of understanding. , but is not intended to limit the invention.
本発明において用いられる成分（ａ）のポリマー粉末と
しては、ガラス転移温度が１０〜５０℃のアルキル（メ
タ）アクリレートのホモポリマー及び／またはコポリマ
ーの粉末であり、該ポリマー粉末のガラス転移温度が１
０℃より低いと、裏装材としての形状を保つための強度
が不足するという欠点が生じるようになり、反対に５０
℃より高い場合は、硬度が増して裏装材として好適な粘
弾性が得られないようになる。The polymer powder of component (a) used in the present invention is a powder of an alkyl (meth)acrylate homopolymer and/or copolymer having a glass transition temperature of 10 to 50°C, and the glass transition temperature of the polymer powder is 1.
If the temperature is lower than 0℃, there will be a disadvantage that the strength to maintain the shape of the lining material will be insufficient;
If the temperature is higher than 0.degree. C., the hardness increases and viscoelasticity suitable for the lining material cannot be obtained.
上記ポリマー粉末の構成成分として用いることのできる
アルキル（メタ）アクリレートモノマーの具体例として
は、メチル（メタ）アクリレ−Ｉ・、エチル（メタ）ア
クリレート、ｎ−ブチル（メタ）アクリレート、イソブ
チル（メタ）アクリレート、ｔｅｒｔ−ブチル（メタ）
アクリレート、２−エチルヘキシル（メタ）アクリレー
ト、オクチル（メタ）アクリレート、ラウリル（メタ）
アクリレート、 トリデシル（メタ）アクリレート、ス
テアリル（メタ）アクリレート等である。これらアルキ
ル（メタ〉アクリレートモノマーは、ガラス転移温度が
上記範囲のポリマーを形成するように、それぞれ単独で
あるいは２種もしくはそれ以上混合して用いることがで
き、中でも最終的に得られる裏装材に特に好適な粘弾性
を与えることができる点て、ｎ−ブチルメタクリレート
の単独、あるいは、ｎ−ブチルメタクリレートとイソブ
チルメタクリレートの混合モノマーを用いるのが好まし
い。Specific examples of alkyl (meth)acrylate monomers that can be used as constituents of the polymer powder include methyl (meth)acrylate I, ethyl (meth)acrylate, n-butyl (meth)acrylate, and isobutyl (meth)acrylate. Acrylate, tert-butyl (meth)
Acrylate, 2-ethylhexyl (meth)acrylate, octyl (meth)acrylate, lauryl (meth)
Acrylate, tridecyl (meth)acrylate, stearyl (meth)acrylate, etc. These alkyl(meth)acrylate monomers can be used alone or in a mixture of two or more to form a polymer having a glass transition temperature in the above range. It is preferable to use n-butyl methacrylate alone or a mixed monomer of n-butyl methacrylate and isobutyl methacrylate because they can provide particularly suitable viscoelasticity.
また、上記ポリマー粉末は、カラス転移温度が１０〜５
０℃の範囲にあるので、通常の取扱状態て特に支障をき
たさないが、ガラス転移温度が低いもの程高温での取扱
もしくは長期間の保存等で、ポリマー粉末同士がブロッ
キングを起こす傾向があるので、これを防ぐ目的で、そ
の表面を無機質粉体て被覆するのが好ましい。該表面被
覆に用いることのできる無機粉体としては、カオリン、
タルク、クレー、炭酸カルシウム、シリカ、シリカ・ア
ルミナ、アルミナ、酸化チタン、第三リン酸カルシウム
、ガラス粉末、石英粉末なとてあり、これら無機粉体の
使用量は、ポリマー粉末１００重量部に対して１００重
量部以下とするのが好ましい。無機粉体の使用量が１０
０重量部を超えると、得られる裏装材の強度を低下させ
る、柔軟性を阻害するなどの問題点が生じるようになる
。Further, the polymer powder has a glass transition temperature of 10 to 5.
Since it is in the 0℃ range, it does not cause any problems under normal handling conditions, but polymer powders with lower glass transition temperatures tend to block each other when handled at high temperatures or stored for long periods of time. In order to prevent this, it is preferable to coat the surface with inorganic powder. Inorganic powders that can be used for the surface coating include kaolin,
These include talc, clay, calcium carbonate, silica, silica/alumina, alumina, titanium oxide, tricalcium phosphate, glass powder, and quartz powder, and the amount of these inorganic powders used is 100 parts by weight per 100 parts by weight of polymer powder. It is preferable that the amount is less than parts by weight. The amount of inorganic powder used is 10
If the amount exceeds 0 parts by weight, problems such as lowering the strength of the resulting lining material and inhibiting flexibility will occur.
上記ポリマー粉末の製造方法は特に限定するものではな
く、従来公知の方法、例えば、塊状重合をおこなった後
粉砕する方法、懸濁重合または乳化重合などによって直
接ポリマー粉末とする方法、溶液重合をおこなった後噴
霧乾燥する方法などによって製造することができる。こ
れら製造方法の中でも懸濁重合法は、裏装材として取扱
易い平均粒子径１０〜１００μｍのポリマー粒子が直接
製造できる点、及び、懸濁重合に際して水系分散媒体中
に無機粉体を含有させて懸濁重合を行うことによって、
ポリマー粉末が生成すると同時にその表面に分散媒中の
無機粉体が被覆されたポリマー粉末が得られる点て特に
好ましい。The method for producing the above polymer powder is not particularly limited, and conventionally known methods such as bulk polymerization followed by pulverization, suspension polymerization or emulsion polymerization to directly produce polymer powder, and solution polymerization may be used. It can be manufactured by a method such as spray drying after drying. Among these production methods, the suspension polymerization method has the advantage that polymer particles with an average particle diameter of 10 to 100 μm, which are easy to handle as a lining material, can be directly produced, and that inorganic powder is included in the aqueous dispersion medium during suspension polymerization. By carrying out suspension polymerization,
This is particularly preferable in that a polymer powder whose surface is coated with the inorganic powder in the dispersion medium can be obtained at the same time as the polymer powder is produced.
本発明における成分（ｂ）のアルキル（メタ）アクリレ
ートモノマーは、ガラス転移温度が−５〜−９５℃のポ
リマーを構成し得る１種以上を用いることができる。形
成されるポリマーのガラス転移温度が一５℃より高いモ
ノマーを用いると、裏装材としたときに硬度が増して適
度な粘弾性が得られなくなり、これとは反対に一９５℃
より低いモノマーを用いると裏装材としての形状を保つ
だけの強度が不足するようになる。As the alkyl (meth)acrylate monomer of component (b) in the present invention, one or more types can be used that can constitute a polymer having a glass transition temperature of -5 to -95°C. If a monomer whose glass transition temperature is higher than 15°C is used as a backing material, the hardness will increase and appropriate viscoelasticity will not be obtained;
If a lower monomer is used, the strength of the backing material to maintain its shape will be insufficient.
本発明において、成分（ｂ）として好ましく用いること
のできるアルキル（メタ）アクリレートモノマーの一例
としては、２−エチルヘキシル（メタ）アクリレート、
オクチル（メタ）アクリレート、ラウリル（メタ）アク
リし一ト、 トリデシル（メタ）アクリレート、ステア
リル（メタ）アクリレート等であり、これらモノマーは
それぞれ単独であるいは２種もしくはそれ以上を混合し
て用いることができる。また、メチル（メタ）アクリレ
ート、エチル（メタ）アクリレート、ブチル（メタ）ア
クリレート等は、それぞれ単独ではガラス転移温度が上
記範囲から外れるが、形成されるポリマーのガラス転移
温度が上記範囲内となるように、他のアルキル（メタ）
アクリレートモノマーと朝み合わせることによって成分
（ｂ）として使用可能である。In the present invention, examples of alkyl (meth)acrylate monomers that can be preferably used as component (b) include 2-ethylhexyl (meth)acrylate,
These monomers include octyl (meth)acrylate, lauryl (meth)acrylate, tridecyl (meth)acrylate, stearyl (meth)acrylate, etc., and these monomers can be used alone or in a mixture of two or more types. . In addition, although the glass transition temperature of methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, etc. is outside the above range when used alone, the glass transition temperature of the polymer formed is within the above range. to other alkyl (meta)
It can be used as component (b) by combining with acrylate monomers.
本発明において、成分（ｃ）として用いられる多官能（
メタ）アクリレートモノマーは、成分（ｂ）と反応して
架橋構造を形成し、得られる裏装材に対し、外力が加わ
って変形した場合の形状復元力を付与することができる
。用いることのできる多官能（メタ）アクリレートモノ
マーの具体例としては、エチレングリコールジ（メタ）
アクリレート、トリエチレングリコールジ（メタ）アク
リレート、ネオベンチルグリコールジ（メタ）アクリレ
ート、１，６−ヘキサンジオールジ（メタ）アクリレー
ト、１，１０−デカンチオールジ（メタ）アクリレート
、ビスフェノールＡジ（メタ）アクリレート、２，２゛
−ビス〔（メタ）アクリロイルオキシポリエトキシフェ
ニル〕プロパン、２，２′−ビス（４−（３−メタクリ
ロキシ−２−ヒドロキシプロポキシ）フェニル〕プロパ
ン、２，２．４−１リメチルへキサメチレンジイソシア
ネート１モルと２−ヒドロキシエチル（メタ）アクリレ
ート２モルとの付加物等の２官能性モノマー； トリメ
チロールプロパントリ（メタ）アクリレート等の３官能
性モノマー；ペンタエリスリトールテトラ（メタ）アク
リレート、２． ２． ４−トリメチルへキサメチレン
ジイソシアネート１モルとグリセリンジ（メタ）アクリ
レート２モルとの付加物等の４官能性モノマーなとを例
として挙げることができる。In the present invention, the polyfunctional (
The meth)acrylate monomer reacts with component (b) to form a crosslinked structure, and can impart shape restoring force to the resulting lining material when it is deformed by external force. Specific examples of polyfunctional (meth)acrylate monomers that can be used include ethylene glycol di(meth)
Acrylate, triethylene glycol di(meth)acrylate, neobentyl glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, 1,10-decanethiol di(meth)acrylate, bisphenol A di(meth)acrylate, ) acrylate, 2,2′-bis[(meth)acryloyloxypolyethoxyphenyl]propane, 2,2′-bis(4-(3-methacryloxy-2-hydroxypropoxy)phenyl)propane, 2,2.4- Bifunctional monomers such as adducts of 1 mole of 1-trimethylhexamethylene diisocyanate and 2 moles of 2-hydroxyethyl (meth)acrylate; trifunctional monomers such as trimethylolpropane tri(meth)acrylate; pentaerythritol tetra(meth)acrylate; ) acrylate, 2. 2. tetrafunctional monomers such as an adduct of 1 mol of 4-trimethylhexamethylene diisocyanate and 2 mol of glycerin di(meth)acrylate.
上記多官能性モノマーの使用量は、上記モノマー成分（
ｂ）の１００１量部に対し ０．１〜１０ｉｉ量部の範
囲が好ましく、特に ０．３〜３重量部の範囲が好まし
い。該多官能性モノマーの使用量が上記範囲未満ては、
得られる裏装材を長期間使用した場合、咬合力、咀喚圧
に耐えられずに塑性変形する原因となり、上記範囲を超
えると裏装材が硬くなると共に壊れ易くなる。The amount of the polyfunctional monomer used is the monomer component (
It is preferably in the range of 0.1 to 10ii parts by weight, particularly preferably in the range of 0.3 to 3 parts by weight, per 1001 parts by weight of b). If the amount of the polyfunctional monomer used is less than the above range,
If the obtained lining material is used for a long period of time, it may not be able to withstand occlusal force and masticatory pressure, causing plastic deformation, and if the above range is exceeded, the lining material becomes hard and easily breaks.
本発明において、成分（ｄ）として用いることのできる
重合開始剤に特別な制約はなく、公知のいずれのもので
も良い。−例としては、ヘンシイルバーオキサイド、ジ
ーｔｅｒｔ−ブチルパーオキサイド、クメンハイドロパ
ーオキサイド等の有機過酸化物； ２，２’−アゾビ
スイソブチロニトリル、１．１’−アゾビス（シクロヘ
キサン−１−カルボニトリル）等のアゾ系化合物が好適
に用いられる。一方、常温重合を行う場合には、ベンゾ
イルパーオキサイド／ジメチルアニリン系、クメンハイ
ドロパーオキサイド／チオ尿素系、アスコルビン酸／Ｃ
ｕ”基糸、有機スルフィン酸またはその塩／アミン／過
酸化物系等の酸化・還元系開始剤、並びにトリブチルボ
ラン、有機スルフィン酸等も好適に用いられる。In the present invention, there are no particular restrictions on the polymerization initiator that can be used as component (d), and any known initiator may be used. - organic peroxides such as, for example, hensyl peroxide, di-tert-butyl peroxide, cumene hydroperoxide; 2,2'-azobisisobutyronitrile, 1,1'-azobis(cyclohexane-1 -carbonitrile) and the like are preferably used. On the other hand, when performing room temperature polymerization, benzoyl peroxide/dimethylaniline type, cumene hydroperoxide/thiourea type, ascorbic acid/C
U'' base threads, oxidation/reduction initiators such as organic sulfinic acids or salts thereof/amines/peroxides, tributylborane, organic sulfinic acids, etc. are also suitably used.
また、本発明の軟質樹脂組成物を可視光線照射による光
重合で得る場合には、α−ジケトン／第３級アミン、α
−ジケトン／アルデヒド、α−ジケトン／メルカプタン
なとの酸化・還元系が好ましい。α−ジケトンとしては
、カンファーキノン、ジアセチル、２，３−ペンタンジ
オン、ヘンシル、アセトナフテンキノン、フエナントラ
キノン等、第３級アミンとしてはＮ、Ｎ−ジメチルアミ
ノエチルメタクリレート、Ｎ、Ｎ−ジメナルアミノ安息
香酸エチル、ミヒラーケトン等、アルデヒドとしてはシ
トロネラール、ラウリルアルデヒド、０−フタルジアル
デヒド、ｐ−オクチルオキシヘンズアルデヒド等、メル
カプタンとしては１−デカンチオール、チオサリチル酸
、２−メルカプトベンゾキサゾール、４−メルカプトア
セトフェノンなとを挙げることができる。さらに、これ
らの酸化・還元系に有機過酸化物を添加したα−ジケト
ン／有機過酸化物／還元剤の系も好適に用いられる。In addition, when the soft resin composition of the present invention is obtained by photopolymerization by irradiation with visible light, α-diketone/tertiary amine, α-diketone/tertiary amine, α
Preferred are oxidation/reduction systems such as -diketone/aldehyde and α-diketone/mercaptan. Examples of α-diketones include camphorquinone, diacetyl, 2,3-pentanedione, hensyl, acetonaphthenequinone, and phenanthraquinone; examples of tertiary amines include N,N-dimethylaminoethyl methacrylate, N,N-dimenalamino Ethyl benzoate, Michler's ketone, etc. Aldehydes include citronellal, lauryl aldehyde, 0-phthaldialdehyde, p-octyloxyhenzaldehyde, etc. Mercaptans include 1-decanethiol, thiosalicylic acid, 2-mercaptobenzoxazole, 4-mercapto Examples include acetophenone. Furthermore, an α-diketone/organic peroxide/reducing agent system in which an organic peroxide is added to these oxidation/reduction systems is also preferably used.
上記重合開始剤の添加量に特別な制限がなく、−船釣に
は成分（ｂ）のモノマーに対して ０６０１〜１０重量
％の範囲で用いられる。There is no particular restriction on the amount of the polymerization initiator added, and for boat fishing it is used in an amount of 0.601 to 10% by weight based on the monomer of component (b).
本発明における裏装材は、上記成分（ａ）〜（ｄ）の各
成分を、使用目的に応して適宜組み合わせて使用される
が、通常成分（ａ）をポリマー粉末成分（１）とし、成
分（ｂ）及び（ｃ）をモノマー成分（ＩＩ）として取り
扱うのが便利である。The lining material in the present invention is used by appropriately combining each of the above components (a) to (d) depending on the purpose of use, but usually the component (a) is a polymer powder component (1), It is convenient to treat components (b) and (c) as monomer component (II).
すなわち、ポリマー粉末成分（１）及びモノマー成分（
ｎ）のいずれか一方もしくは両方に、上記成分（ｄ）の
重合開始剤を添加し、次いて成分（１）及び成分（ＩＩ
）の所望量を混合し、重合が進んで全体がシロップ状あ
るいはスラリー状となった時点で、該混合物の適量を、
義歯床作製用フラスコ内に予め型とられたアクリル樹脂
系の餅状プレポリマーの裏装面（顎堤粘膜に接する面）
に注ぎ、石膏型で加圧し、そのまま常法により重合操作
を行う方法、あるいは、長期間使用して適合性の悪くな
った義歯床の粘膜面側の一部または全面を深さ約１ｍｍ
程度研削し、該研削面に上記混合物の適量を注入し、そ
れを口腔内に挿入し、咬合させた状態でしばらく維持さ
せて、常温で重合させる方法なとて裏装することができ
る。That is, polymer powder component (1) and monomer component (
The polymerization initiator of component (d) above is added to either or both of component (n), and then component (1) and component (II) are added.
), and when the polymerization progresses and the whole becomes syrup-like or slurry-like, an appropriate amount of the mixture is mixed,
The lining surface (the surface in contact with the alveolar ridge mucosa) of the acrylic resin mochi-shaped prepolymer molded in advance in the flask for denture base preparation
You can pour it into a denture base, pressurize it with a plaster mold, and then polymerize it using a conventional method. Alternatively, you can apply it to a depth of approximately 1 mm on part or the entire surface of the mucosal side of a denture base that has become unsuitable after long-term use.
It can be relined by grinding it to a certain extent, injecting an appropriate amount of the mixture onto the ground surface, inserting it into the oral cavity, keeping it in an occlusal state for a while, and allowing it to polymerize at room temperature.
上記ポリマー粉末成分（１）とモノマー成分（ＩＩ）と
の混合割合は、使用目的に応して適宜とすることができ
、例えば、レジン義歯床用の軟質裏装材として用いる場
合、ポリマー粉末成分（Ｉ）／モノマー成分（ＩＩ）の
重量部比が１７３〜３／１の範囲とするのが好ましい。The mixing ratio of the polymer powder component (1) and the monomer component (II) can be set appropriately depending on the purpose of use. For example, when used as a soft lining material for a resin denture base, the polymer powder component The weight part ratio of (I)/monomer component (II) is preferably in the range of 173 to 3/1.
ポリマー粉末成分（１）が１重量部未満て成分（ＩＩ）
が３重量部を超えると裏装材としての強度が小さくなり
、成分（１）が３重量部より多く成分（ＩＩ）が１重量
部未満では硬度が増して軟質裏装材として適さなくなる
。Polymer powder component (1) is less than 1 part by weight and component (II)
If it exceeds 3 parts by weight, the strength as a lining material will decrease, and if component (1) is more than 3 parts by weight and component (II) is less than 1 part by weight, the hardness will increase and it will not be suitable as a soft lining material.
以上、本発明の軟質樹脂組成物について、レジン義歯床
用の裏装材として用いる場を例にして説明してきたが、
本発明の樹脂組成物の用途はこれに限定されるものでは
なく、本発明組成物の軟質特性を利用して、例えば、間
隙を埋めるための充填材としであるいは鋳型用組成物と
して使用し得る他、振動ないし振動音を伴うような部品
間に介層させることによって振動ないし振動音を減衰さ
せることができるといった効果があり、種々の用途に有
用である。Above, the soft resin composition of the present invention has been explained using as an example a lining material for a resin denture base.
The use of the resin composition of the present invention is not limited to this, but by utilizing the soft properties of the composition of the present invention, it can be used, for example, as a filler to fill gaps or as a molding composition. In addition, it has the effect of attenuating vibrations or vibration noises by interposing the layer between parts that generate vibrations or vibration noises, and is useful for various applications.
以下、実施例により本発明をさらに具体的に説明するが
、これら実施例は一例に過ぎないもので本発明を限定す
るものではない。EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples, but these Examples are merely examples and do not limit the present invention.
実施例 ｌ
冷却管及び攪拌機付きの３１重合容器中に、ドデシルベ
ンゼンスルホン酸ナトリウムの１％水溶液４．５ｇ、ポ
リビニルアルコール（ケン何度８７％）の６％水溶液を
３ｇ及びイオン交換水を１５００ｇ加え、攪拌して分散
及び溶解させた。Example l Into a 31 polymerization vessel equipped with a cooling tube and a stirrer, 4.5 g of a 1% aqueous solution of sodium dodecylbenzenesulfonate, 3 g of a 6% aqueous solution of polyvinyl alcohol (87% polyvinyl alcohol), and 1500 g of ion-exchanged water were added. , and stirred to disperse and dissolve.
これに過酸化ヘンゾイル５ｇ、ｎ−ブチルメタクリレー
トモノマー２５０ｇ及びイソブチルメタクリレ−）２５
０ｇの混合モノマーを添加し、８° ０℃で５時間重合
反応をおこなった。生成ポリマー粒子は十分に水洗、ろ
過後、３０℃で一昼夜乾燥することによりポリマー粉末
を得た（ガラス転移温度３３℃、平均粒子形約８０μｍ
）。To this was added 5 g of henzoyl peroxide, 250 g of n-butyl methacrylate monomer, and 25 g of isobutyl methacrylate monomer.
0 g of mixed monomer was added, and a polymerization reaction was carried out at 8°C and 0°C for 5 hours. The generated polymer particles were thoroughly washed with water, filtered, and dried at 30°C for a day and night to obtain polymer powder (glass transition temperature: 33°C, average particle size of approximately 80 μm).
).
上記のポリマー粉末１００重量部に過酸化ヘンジイル１
重量部を混合してポリマー粉末成分（Ｉ）とし、また、
ラウリルメタクリレートモノマー１００重量部とエチレ
ングリコールジメタクリレート ２．５重量部を混合し
てモノマー成分（■）とし、該成分（Ｉ）／成分（ｎ）
を３／２の重量比で混合し、粘度が上昇した段階で、予
め石膏型で加圧して型とられた餅状のメタクリル樹脂の
義歯床の粘膜面に注入し、加圧したまま１００℃で３０
分間加熱重合した。1 part by weight of the above polymer powder and 1 part by weight of hendiyl peroxide
parts by weight to form a polymer powder component (I), and
100 parts by weight of lauryl methacrylate monomer and 2.5 parts by weight of ethylene glycol dimethacrylate were mixed to form a monomer component (■), and the component (I)/component (n)
were mixed at a weight ratio of 3/2, and when the viscosity rose, it was injected onto the mucous surface of a denture base made of a mochi-like methacrylic resin that had been molded under pressure using a plaster mold, and heated at 100°C while being pressurized. 30 at
Polymerization was carried out by heating for a minute.
以上のようにして得られた義歯床の粘膜面には、上記成
分（１）と成分（ＩＩ）とによって形成された適度な柔
軟性を有する裏装材層が形成されており、しかもメタク
リル樹脂義歯床と強固に接着していた。On the mucosal surface of the denture base obtained as described above, a lining material layer having appropriate flexibility is formed by the above components (1) and (II), and is also made of methacrylic resin. It was strongly bonded to the denture base.
また、成分（Ｉ）及び成分（ＩＩ）からなる上記組成物
で、直径５０ｍｍ、厚さ１ｍｍの成形体を形成し上記同
様に加熱重合して得た試験片を、３７℃の水中に２４時
間浸漬し、重量増加による吸水量を測定したところ０．
０２ｍｇ／ｃｍ２てあり、きわめて吸水量の小さい値で
あった。In addition, a test piece obtained by forming a molded article with a diameter of 50 mm and a thickness of 1 mm from the above composition consisting of component (I) and component (II) and heating and polymerizing it in the same manner as above was immersed in water at 37° C. for 24 hours. When immersed in water and measured the amount of water absorbed due to weight increase, it was 0.
The water absorption amount was 0.02 mg/cm2, which was an extremely small value.
実施例 ２
冷却管及び攪拌機付きの３１重合容器中に、第三リン酸
カルシウム ２．０ｇ、ドデシルベンゼンスルホン酸ナ
トリウムの１％水溶ａ４．５ｇ、ポリビニルアルコール
（ケン何度８７％）の６％水溶液を３ｇ及びイオン交換
水を１５００ｇ加え、攪拌して分散及び溶解させた。こ
れに過酸化ヘンジイル５ｇをｎ−ブチルメタクリレート
モノマー５００ｇに溶解させたものを添加し、８０℃で
５時間重合反応をおこない、生成ポリマー粒子は十分に
水洗、ろ過後、４０℃で一昼夜乾燥することによりポリ
マー粉末を得たくガラス転移温度２０℃、平均粒子形約
８０μｍ）。Example 2 In a 31 polymerization vessel equipped with a cooling tube and a stirrer, 2.0 g of tricalcium phosphate, 4.5 g of a 1% aqueous solution of sodium dodecylbenzenesulfonate, and 3 g of a 6% aqueous solution of polyvinyl alcohol (87% polyvinyl alcohol) were added. and 1500 g of ion-exchanged water were added and stirred to disperse and dissolve. Add 5 g of hendyl peroxide dissolved in 500 g of n-butyl methacrylate monomer to this, conduct a polymerization reaction at 80°C for 5 hours, wash the resulting polymer particles thoroughly with water, filter, and then dry at 40°C overnight. To obtain a polymer powder, the glass transition temperature is 20°C and the average particle size is about 80 μm).
このポリマー粉末の表面は、分散媒中に存在させた第三
リン酸カルシウムが被覆されており、５０℃で２週間の
ブロッキング試験において、ブロッキングが発生せず、
きわめて流動性に優れたポリマー粉末であった。The surface of this polymer powder was coated with tricalcium phosphate present in a dispersion medium, and no blocking occurred in a blocking test at 50°C for 2 weeks.
It was a polymer powder with extremely excellent fluidity.
上記のポリマー粉末１００重量部に過酸化ヘンジイル１
重量部を混合してポリマー粉末成分（１）とし、また、
ラウリルメタクリレートモノマー１００重量部とエチレ
ングリコールジメタクリレート ２．５重量部を混合し
てモノマー成分（ＩＩ）とし、該成分（Ｉ）／成分（Ｉ
Ｉ）を３７２の重量比で混合し、粘度が上昇した段階で
、予め石膏型で加圧して型とられた餅状のメタクリル樹
脂の義歯床の粘膜面に注入し、加圧したまま１００℃で
３０分間加熱重合した。1 part by weight of the above polymer powder and 1 part by weight of hendiyl peroxide
Parts by weight are mixed to form a polymer powder component (1), and
100 parts by weight of lauryl methacrylate monomer and 2.5 parts by weight of ethylene glycol dimethacrylate are mixed to prepare monomer component (II), and the component (I)/component (I
I) was mixed at a weight ratio of 372, and when the viscosity increased, it was injected onto the mucous surface of a methacrylic resin denture base that had been pressurized in a plaster mold in advance, and heated to 100°C while being pressurized. Polymerization was carried out by heating for 30 minutes.
以上のようにして得られた義歯床の粘膜面には、上記成
分（Ｉ）と成分（ＩＩ）とによって形成された適度な柔
軟性を有する裏装材層が形成されており、しかもメタク
リル樹脂義歯床と強固に接着していた。On the mucosal surface of the denture base obtained as described above, a lining material layer having appropriate flexibility is formed by the above components (I) and (II), and is also made of methacrylic resin. It was strongly bonded to the denture base.
また、成分（Ｉ）及び成分（ＩＩ）からなる上記組成物
で、直径５０ｍｍ、厚さ１ｍｍの成形体を形成し上記同
様に加熱重合して得た試験片を、３７℃の水中に２４時
間浸漬し、重量増加による吸水量を測定したところ０．
０３ｍｇ／ｃｍ２てあり、きわめて吸水量の小さい値で
あった。In addition, a test piece obtained by forming a molded article with a diameter of 50 mm and a thickness of 1 mm from the above composition consisting of component (I) and component (II) and heating and polymerizing it in the same manner as above was immersed in water at 37° C. for 24 hours. When immersed in water and measured the amount of water absorbed due to weight increase, it was 0.
The amount of water absorbed was 0.3 mg/cm2, which was an extremely low value.
実施例 ３
長期間の使用によって適合性の悪くなったアクリル樹脂
製の義歯床の粘膜面全体を１ｍｍの深さに研削したもの
を義歯床として準備した。Example 3 A denture base was prepared by grinding the entire mucosal surface of an acrylic resin denture base whose compatibility had deteriorated due to long-term use to a depth of 1 mm.
上記実施例Ｉのポリマー粉末成分（Ｉ）と、ラウリルメ
タクリレート１００重量部、エチレングリコールジメタ
クリレート ２．５重量部及びＮ、Ｎ−ジメチル−ｐ−
）ルイシン １．５重量部を混合し・てなるモノマー成
分（Ｉｌ）とを、（１）／（Ｉｒ）＝３／２の重量比率
で混合し、粘度が上昇した段階で上記義歯床の粘膜面に
注入し、次いてそれを口腔内に挿入し、咬合させた状態
で重合を完結させた。The polymer powder component (I) of Example I above, 100 parts by weight of lauryl methacrylate, 2.5 parts by weight of ethylene glycol dimethacrylate, and N,N-dimethyl-p-
) A monomer component (Il) consisting of 1.5 parts by weight of leucine is mixed at a weight ratio of (1)/(Ir) = 3/2, and when the viscosity increases, the mucous membrane of the denture base is mixed. It was injected into the surface, then inserted into the oral cavity, and polymerization was completed in the occlusal state.
以上のようにして義歯床の粘膜面に形成された裏装材は
、適度な柔軟性を持ち、しかもメタクリル樹脂製の義歯
床と強固に接着し・ていた。The lining material formed on the mucosal surface of the denture base as described above had appropriate flexibility and was also firmly adhered to the methacrylic resin denture base.
比較例
シリコーンゴム系義歯床用裏装材として市販されている
製品を、製造業者の指示にしたがって用いた。その結果
、義歯床の顎堤部はメタクリル樹脂義歯床と接着してい
たが、辺縁部の接着は不十分て辺縁封鎖性に劣るもので
あった。Comparative Example A commercially available silicone rubber denture base lining material was used according to the manufacturer's instructions. As a result, the alveolar ridge part of the denture base was adhered to the methacrylic resin denture base, but the adhesion of the marginal part was insufficient and the margin sealability was poor.
また、このシリコーンゴム系裏装材について、上記実施
例２同様に吸水試験を行ったところ、吸水量は０ 、２
５ ｍ ｇ ／ ｃ ｍ ２てあり、きわめて大きな吸
水量であった。In addition, when a water absorption test was conducted on this silicone rubber lining material in the same manner as in Example 2, the water absorption amount was 0, 2.
The amount of water absorbed was 5 mg/cm2, which was an extremely large amount.
本発明によって提供される軟質樹脂組成物は、上記特定
の成分（ａ）〜（ｄ）から得られているため、例えば、
義歯床用の裏装材として用いた場合、従来の歯科技工操
作により簡単に裏装を施すことができ、しかも形成され
た裏装面は適度な粘弾性を持ち、特にアクリル樹脂系義
歯床との接着力に優れており、吸水量が小さいなとの優
れた特性を有し、従ってこの材料を長期間口腔内で使用
した場合でも弾性の低下、変色、剥離、微生物の付着な
との問題が起こらず、きわめて有用性の高い材料である
。Since the soft resin composition provided by the present invention is obtained from the above specific components (a) to (d), for example,
When used as a lining material for denture bases, the lining can be easily applied using conventional dental techniques, and the formed lining surface has appropriate viscoelasticity, making it particularly compatible with acrylic resin denture bases. It has excellent properties such as excellent adhesive strength and low water absorption, so even if this material is used in the oral cavity for a long period of time, it will not cause problems such as loss of elasticity, discoloration, peeling, and adhesion of microorganisms. This is an extremely useful material.
Claims (3)
ら得られる軟質樹脂組成物。 成分（ａ）；ガラス転移温度が１０〜５０℃のアルキル
（メタ）アクリレートのホモポリマー及び／またはコポ
リマーの粉末、 成分（ｂ）；ガラス転移温度が−５〜−９０℃のポリマ
ーを構成し得る１種以上のアル キル（メタ）アクリレートモノマー、 成分（ｃ）；多官能（メタ）アクリレートモノマ成分（
ｄ）；重合開始剤、(1) A soft resin composition obtained from the following components (a), (b), (c) and (d). Component (a): Powder of homopolymer and/or copolymer of alkyl (meth)acrylate having a glass transition temperature of 10 to 50°C, Component (b): Possible to constitute a polymer having a glass transition temperature of -5 to -90°C. one or more alkyl (meth)acrylate monomers, component (c); polyfunctional (meth)acrylate monomer component (
d); Polymerization initiator;
機質粉体で被覆されてなるものである請求項１に記載の
軟質樹脂組成物。(2) The soft resin composition according to claim 1, wherein the polymer powder of component (a) has a surface coated with an inorganic powder.
タクリレートのホモポリマーまたはｎ−ブチルメタクリ
レートとイソブチルメタクリレートのコポリマーからな
る請求項１及び２に記載の軟質樹脂組成物。(3) The soft resin composition according to Claims 1 and 2, wherein the polymer powder of component (a) comprises a homopolymer of n-butyl methacrylate or a copolymer of n-butyl methacrylate and isobutyl methacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32517490A JP3334050B2 (en) | 1990-11-29 | 1990-11-29 | Soft resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32517490A JP3334050B2 (en) | 1990-11-29 | 1990-11-29 | Soft resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04198112A true JPH04198112A (en) | 1992-07-17 |
| JP3334050B2 JP3334050B2 (en) | 2002-10-15 |
Family
ID=18173836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32517490A Expired - Fee Related JP3334050B2 (en) | 1990-11-29 | 1990-11-29 | Soft resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3334050B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007217674A (en) * | 2006-01-18 | 2007-08-30 | Nippon Synthetic Chem Ind Co Ltd:The | Active energy ray polymerizable composition, pressure-sensitive adhesive, and pressure-sensitive adhesive tape |
| JP2008519121A (en) * | 2004-11-03 | 2008-06-05 | メイクベイル グループ リミテッド | Production of acrylate solids |
| JP2008520568A (en) * | 2004-11-16 | 2008-06-19 | スリーエム イノベイティブ プロパティズ カンパニー | Dental filler containing phosphorus-containing surface treatment and compositions and methods thereof |
| JP2014501300A (en) * | 2010-12-23 | 2014-01-20 | アルケマ フランス | Crosslinked nanostructured cast sheet |
| US8957126B2 (en) | 2004-11-16 | 2015-02-17 | 3M Innovative Properties Company | Dental compositions with calcium phosphorus releasing glass |
| JPWO2015129180A1 (en) * | 2014-02-25 | 2017-03-30 | クラレノリタケデンタル株式会社 | Dental polymerizable composition, dental temporary cement, dental filler, denture base lining material, and dental mucosal conditioner |
| US10137061B2 (en) | 2004-11-16 | 2018-11-27 | 3M Innovative Properties Company | Dental fillers and compositions including phosphate salts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5037473A (en) | 1987-11-18 | 1991-08-06 | Antonucci Joseph M | Denture liners |
-
1990
- 1990-11-29 JP JP32517490A patent/JP3334050B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008519121A (en) * | 2004-11-03 | 2008-06-05 | メイクベイル グループ リミテッド | Production of acrylate solids |
| JP2008520568A (en) * | 2004-11-16 | 2008-06-19 | スリーエム イノベイティブ プロパティズ カンパニー | Dental filler containing phosphorus-containing surface treatment and compositions and methods thereof |
| US8957126B2 (en) | 2004-11-16 | 2015-02-17 | 3M Innovative Properties Company | Dental compositions with calcium phosphorus releasing glass |
| US9233054B2 (en) | 2004-11-16 | 2016-01-12 | 3M Innovative Properties Company | Dental fillers including a phosphorus-containing surface treatment, and compositions and methods thereof |
| US9414995B2 (en) | 2004-11-16 | 2016-08-16 | 3M Innovative Properties Company | Dental fillers including a phosphorus-containing surface treatment, and compositions and methods thereof |
| US9517186B2 (en) | 2004-11-16 | 2016-12-13 | 3M Innovative Properties Company | Dental compositions with calcium phosphorus releasing glass |
| US10137061B2 (en) | 2004-11-16 | 2018-11-27 | 3M Innovative Properties Company | Dental fillers and compositions including phosphate salts |
| JP2007217674A (en) * | 2006-01-18 | 2007-08-30 | Nippon Synthetic Chem Ind Co Ltd:The | Active energy ray polymerizable composition, pressure-sensitive adhesive, and pressure-sensitive adhesive tape |
| JP2014501300A (en) * | 2010-12-23 | 2014-01-20 | アルケマ フランス | Crosslinked nanostructured cast sheet |
| JPWO2015129180A1 (en) * | 2014-02-25 | 2017-03-30 | クラレノリタケデンタル株式会社 | Dental polymerizable composition, dental temporary cement, dental filler, denture base lining material, and dental mucosal conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3334050B2 (en) | 2002-10-15 |
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