JPH0593030A - Biodegradable polymeric material - Google Patents

Biodegradable polymeric material

Info

Publication number
JPH0593030A
JPH0593030A JP3280502A JP28050291A JPH0593030A JP H0593030 A JPH0593030 A JP H0593030A JP 3280502 A JP3280502 A JP 3280502A JP 28050291 A JP28050291 A JP 28050291A JP H0593030 A JPH0593030 A JP H0593030A
Authority
JP
Japan
Prior art keywords
polymer material
hydroxyl group
weight
natural
natural polymer
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
Application number
JP3280502A
Other languages
Japanese (ja)
Other versions
JP2611171B2 (en
Inventor
Hyoe Hatakeyama
兵衛 畠山
Shigeo Hirose
重雄 廣瀬
Kunio Nakamura
邦雄 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP3280502A priority Critical patent/JP2611171B2/en
Priority to GB9205892A priority patent/GB2260138A/en
Publication of JPH0593030A publication Critical patent/JPH0593030A/en
Application granted granted Critical
Publication of JP2611171B2 publication Critical patent/JP2611171B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F291/00Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
    • C08F291/06Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00 on to oxygen-containing macromolecules
    • C08F291/08Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00 on to oxygen-containing macromolecules on to macromolecules containing hydroxy radicals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/64Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6484Polysaccharides and derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/64Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6492Lignin containing materials; Wood resins; Wood tars; Derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00Manufacture of cellular products
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2230/00Compositions for preparing biodegradable polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

PURPOSE:To obtain the title material excellent in mechanical strength, useful as a filter for thermoplastic resins by contact reaction of a specified amount of a specific reaction solution with a hydroxyl group-contg. solid natural polymeric material. CONSTITUTION:A hydroxyl group-contg. solid natural polymeric material ( e.g. cellulose-based material) is put to contact reaction with a reaction solution containing (1) a polyisocyanate compound such as tolylene diisocyanate and (2) a polyol compound such as ethylene glycol until the total weight of reaction for the components 1 and 2 comes to >=10 (pref. 15-300)wt.% of the above natural polymeric material, thus obtaining the objective material. The amount of the component 1 to be used is pref. 1.0-1.5 equivalent times the equivalent number of the total hydroxyl groups in the component 2 and the natural polymeric materiel.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、生分解性高分子材料及
びその製造方法に関するものである。
FIELD OF THE INVENTION The present invention relates to a biodegradable polymer material and a method for producing the same.

【0002】[0002]

【従来の技術及びその問題点】これまでに生産されてき
た合成高分子は、古くから存在する天然高分子とは異な
り、自然の循環システムには組み入れにくいため、廃棄
プラスチックは地球環境の劣化を引き起こし大きな問題
となっている。一方、綿、麻、木材、でんぷん等の植物
性成分は廃棄されれば土壌中の微生物によって自然に分
解され、再び炭酸ガスや肥料として植物に取り込まれ
る。
[Prior Art and its Problems] Unlike the natural polymers that have existed since ancient times, the synthetic polymers that have been produced so far are difficult to incorporate into the natural circulation system, so waste plastics do not deteriorate the global environment. Causing a big problem. On the other hand, when plant components such as cotton, hemp, wood, and starch are discarded, they are naturally decomposed by microorganisms in the soil and are again taken into the plant as carbon dioxide and fertilizer.

【0003】本発明者らは、合成高分子に生分解性を付
与する方法を鋭意研究中のところ、植物成分を分子中に
組み込んだタイプの高分子材料が微生物によって分解さ
れるとともに、すぐれた物性を有することを見出した。
このようなタイプの生分解性高分子材料は従来全く知ら
れていない。本発明による生分解性高分子材料はプラス
チック廃棄物による地球環境問題を解決するための有効
な手段となり得るものである。
The inventors of the present invention have been earnestly researching a method for imparting biodegradability to a synthetic polymer, and a polymer material of a type in which a plant component is incorporated into a molecule is decomposed by a microorganism and is excellent. It was found to have physical properties.
No biodegradable polymer material of this type has hitherto been known. The biodegradable polymer material according to the present invention can be an effective means for solving the global environmental problems caused by plastic waste.

【0004】[0004]

【発明が解決しようとする課題】そこで、本発明は、生
分解性を有する新規な高分子材料及びその製造方法を提
供することをその課題とする。
Therefore, an object of the present invention is to provide a novel polymer material having biodegradability and a method for producing the same.

【0005】[0005]

【課題を解決するための手段】本発明によれば、ヒドロ
キシル基を含有する固体状天然高分子材料に対して、そ
のヒドロキシル基を介してポリウレタン鎖を反応結合さ
せてたものからなり、該ポリウレタン鎖の結合量が天然
高分子材料に対して10重量%以上であることを特徴と
する生分解性高分子材料が提供される。また、本発明に
よれば、ヒドロキシル基を含有する固体状天然高分子材
料を、イソシアネート化合物とポリオール化合物を含む
反応溶液と接触反応させることからなり、該イソシアネ
ート化合物とポリオール化合物の合計反応重量が、該天
然高分子材料に対して10重量%以上であることを特徴
とする生分解性高分子材料の製造方法が提供される。さ
らに、本発明によれば、ヒドロキシル基を含有する固体
状天然高分子材料に対して、そのヒドロキシル基の存在
に起因する活性点を介してビニルモノマーをグラフト重
合させたものからなり、該ビニルモノマーの重合体の結
合量が、該固体状天然高分子材料に対して10重量%以
上であることを特徴とする生分解性高分子材料が提供さ
れる。さらにまた、本発明によれば、ヒドロキシル基を
含有する固体状高分子材料をビニルモノマー及びグラフ
ト重合触媒を含む溶液を接触反応させることからなり、
該ビニルモノマーの反応重量が、該天然高分子材料に対
して10重量%以上である生分解性高分子材料の製造方
法が提供される。
According to the present invention, a solid natural polymer material containing a hydroxyl group is obtained by reacting a polyurethane chain through the hydroxyl group, the polyurethane comprising There is provided a biodegradable polymer material characterized in that the amount of chains bonded is 10% by weight or more based on the natural polymer material. Further, according to the present invention, a solid natural polymer material containing a hydroxyl group, which comprises reacting with a reaction solution containing an isocyanate compound and a polyol compound, the total reaction weight of the isocyanate compound and the polyol compound, There is provided a method for producing a biodegradable polymer material, which is 10% by weight or more based on the natural polymer material. Further, according to the present invention, a solid natural polymer material containing a hydroxyl group is obtained by graft-polymerizing a vinyl monomer via an active site due to the presence of the hydroxyl group. Provided is a biodegradable polymer material, characterized in that the amount of the polymer bound is 10% by weight or more based on the solid natural polymer material. Furthermore, according to the present invention, a solid polymer material containing a hydroxyl group is contacted with a solution containing a vinyl monomer and a graft polymerization catalyst,
Provided is a method for producing a biodegradable polymer material, wherein the reaction weight of the vinyl monomer is 10% by weight or more based on the natural polymer material.

【0006】本発明で用いる天然高分子材料は、ヒドロ
キシル基を含有する固体状、例えば、粉末状、フィルム
状、板状、ブロック状、ペレット状、繊維状のものであ
るヒドロキシル基を含有する。天然高分子材料の具体例
としては、セルロース系物質、ヘシセルロース系物質、
リグノセルロース系物質、リグニン系物質、でん粉系物
質等を挙げることができる。本発明によれば、これらの
天然高分子材料は、その固体状態を保持したまま、モノ
マー成分と反応させる。
The natural polymer material used in the present invention contains a hydroxyl group-containing solid form, for example, a powder form, a film form, a plate form, a block form, a pellet form, or a fibrous form. Specific examples of natural polymer materials include cellulosic substances, hecicellulose-based substances,
Examples thereof include lignocellulosic materials, lignin-based materials, starch-based materials and the like. According to the invention, these natural polymeric materials are reacted with the monomer components while retaining their solid state.

【0007】本発明の第1の方法においては、天然高分
子材料は、これにポリイソシアネート化合物とポリオー
ル化合物を含有する溶液と接触反応させて、ポリウレタ
ン鎖を結合させた高分子材料とする。このポリウレタン
鎖の結合量は、天然高分子材料に対して、10重量%以
上、好ましくは15〜300重量%である。
In the first method of the present invention, the natural polymeric material is brought into contact with a solution containing a polyisocyanate compound and a polyol compound, to obtain a polymeric material having polyurethane chains bonded thereto. The amount of the polyurethane chains bound is 10% by weight or more, preferably 15 to 300% by weight, based on the natural polymer material.

【0008】ポリイソシアネートとしては、脂肪族系ポ
リイソシアネート、脂環族系ポリイソシアネートおよび
芳香族系ポリイソシアネートの他、それらの変性体が包
含される。脂肪族系ポリイソシアネートとしては、例え
ば、ヘキサメチレンジイソシアネートが挙げられ、脂環
族系ポリイソシアネートとしては、例えば、イソホロン
ジイソシアネートが挙げられる。芳香族系ポリイソシア
ネートとしては、例えば、トリレンジイソシアネート、
キシリレンジイソシアネート、ジフェニルメタンジイソ
シアネート、ポリメリックジフェニルメタンジイソシア
ネート、トリフェニルメタントリイソシアネート、トリ
ス(イソシアネートフェニル)チオホスフェート等が挙
げられる。ポリイソシアネート変性体としては、例え
ば、ウレタンプレポリマー、ヘキサメチレンジイソシア
ネートビューレット、ヘキサメチレンジイソシアネー
ト、トリマー、イソホロンジイソシアネートトリマー等
が挙げられる。
Examples of polyisocyanates include aliphatic polyisocyanates, alicyclic polyisocyanates, aromatic polyisocyanates, and modified products thereof. Examples of the aliphatic polyisocyanate include hexamethylene diisocyanate, and examples of the alicyclic polyisocyanate include isophorone diisocyanate. As the aromatic polyisocyanate, for example, tolylene diisocyanate,
Examples thereof include xylylene diisocyanate, diphenylmethane diisocyanate, polymeric diphenylmethane diisocyanate, triphenylmethane triisocyanate, and tris (isocyanatophenyl) thiophosphate. Examples of the modified polyisocyanate include urethane prepolymer, hexamethylene diisocyanate burette, hexamethylene diisocyanate, trimer, and isophorone diisocyanate trimer.

【0009】ポリオール化合物としては、ポリウレタン
の製造に用いられる各種のものが用いられ、このような
ものとしては、例えば、エチレングリコール、ジエチレ
ングリコール、1,4−ブタンジオール、1,6−ヘキ
サンジオール、ネオペンチルグリコール、トリメチロー
ルプロパン、グリセリン、トリエタノールアミン、ソル
ビトール等の低分子量ポリオール;ポリエチレングリコ
ール、ポリプロピレングリコール、ポリテトラメチレン
グリコール、エチレンオキシド/プロピレンオキシド共
重合体等のポリエーテルポリオール;ポリカプロラクト
ン、ポリβ−メチル−δ−ブチロラクトン、ジオールと
二塩基酸からのポリエステル等が挙げられる。その他、
水酸基含有液状ポリブタジエン、ポリカーボネートジオ
ール、アクリルポリオール等が挙げられる。
As the polyol compound, various compounds used in the production of polyurethane are used. Examples of such compounds include ethylene glycol, diethylene glycol, 1,4-butanediol, 1,6-hexanediol and neo. Low molecular weight polyols such as pentyl glycol, trimethylolpropane, glycerin, triethanolamine, sorbitol; polyether polyols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, ethylene oxide / propylene oxide copolymers; polycaprolactone, poly β- Examples include methyl-δ-butyrolactone, polyesters from diols and dibasic acids, and the like. Other,
Examples thereof include hydroxyl group-containing liquid polybutadiene, polycarbonate diol, acrylic polyol, and the like.

【0010】ポリイソアネ−ト化合物及びポリオ−ル化
合物を含有する反応溶液には、慣用の触媒、例えば、ス
ズ系やアミン系の触媒を含有させることができる。ポリ
イソアネ−ト化合物の使用割合は、ポリオ−ル化合物及
び天然高分子材料中に含まれる全ヒドロキシル基の当量
数に対しそのイソシアネ−ト基当量数で0.8〜2.0
倍当量、好ましくは1.0〜1.5倍当量である。ま
た、ポリイソシアネ−ト化合物とポリオ−ル化合物の合
計反応量は天然高分子材料に対し10重量%以上、好ま
しくは15〜300重量%である。天然高分子材料にた
いしてポリイソシアネ−ト化合物及びポリオ−ル化合物
からなる反応溶液を接触反応させる場合、その反応温度
は10〜150℃、好ましくは20〜120℃である。
The reaction solution containing the polyisocyanate compound and the polyol compound may contain a conventional catalyst, for example, a tin-based or amine-based catalyst. The proportion of the polyisocyanate compound used is 0.8 to 2.0 in terms of the equivalent number of the isocyanate group to the equivalent number of all the hydroxyl groups contained in the polyol compound and the natural polymer material.
It is a double equivalent, preferably 1.0 to 1.5 times equivalent. The total reaction amount of the polyisocyanate compound and the polyol compound is 10% by weight or more, preferably 15 to 300% by weight, based on the natural polymer material. When a reaction solution containing a polyisocyanate compound and a polyol compound is contact-reacted with a natural polymer material, the reaction temperature is 10 to 150 ° C, preferably 20 to 120 ° C.

【0011】本発明の第2の方法においては、天然高分
子材料に対し、ビニルモノマ−をグラフト重合させ、重
合体鎖を結合させた高分子材料とする。この重合体鎖
は、天然高分子材料に対して10重量%以上、好ましく
は15〜300重量%である。ビニルモノマーとして
は、エチレン、プロピレン、ブテン、ブタジエン等のオ
レフィンの他、酢酸ビニル、スチレン、塩化ビニル、ア
クリロニトリル、フッ化ビニル、アクリル酸エステル、
メタクリル酸エステル等が挙げられる。天然高分子材料
にビニルモノマーをグラフト重合させる方法としては、
ビニルモノマー溶液を、天然高分子材料に接触反応させ
る。ビニルモノマー溶液には、慣用のグラフト重合触
媒、例えば、Ce4+、Fe2+ − H22系等の触媒を含
有させる。ビニルモノマーを溶解させる溶媒として、慣
用のもの、例えば、水、メタノール等が挙げられる。反
応温度は0〜100℃、好ましくは10〜80℃であ
る。ビニルモノマーの反応重量は、天然高分子材料に対
して10重量%以上、好ましくは15〜300重量%で
ある。
In the second method of the present invention, a vinyl polymer is graft-polymerized to a natural polymer material to obtain a polymer material in which polymer chains are bonded. This polymer chain is 10% by weight or more, preferably 15 to 300% by weight, based on the natural polymer material. As vinyl monomers, in addition to olefins such as ethylene, propylene, butene, butadiene, vinyl acetate, styrene, vinyl chloride, acrylonitrile, vinyl fluoride, acrylic acid ester,
Methacrylic acid ester and the like can be mentioned. As a method of graft-polymerizing a vinyl monomer on a natural polymer material,
The vinyl monomer solution is catalytically reacted with the natural polymer material. The vinyl monomer solution contains a conventional graft polymerization catalyst, for example, a catalyst such as Ce 4 +, Fe 2 + -H 2 O 2 system. As the solvent for dissolving the vinyl monomer, a conventional solvent such as water or methanol can be used. The reaction temperature is 0 to 100 ° C, preferably 10 to 80 ° C. The reaction weight of the vinyl monomer is 10% by weight or more, preferably 15 to 300% by weight, based on the natural polymer material.

【0012】[0012]

【発明の効果】本発明により得られる天然高分子材料に
ポリウレタン鎖やビニルモノマーの重合体鎖が結合した
高分子材料は、その基幹高分子が天然高分子材料である
ことから、すぐれた微生物分解性を有するものであり、
また、その基幹高分子である天然高分子材料には、ポリ
ウレタン鎖やビニルモノマーの重合体鎖が結合している
ことから、機械的強度において著しく向上したものであ
る。本発明の生分解性高分子材料は、フィルム状、シー
ト状、ブロック状、繊維状、粉末状等の任意の形状で用
いられる。粉末状のものは、熱可塑性樹脂に対する充填
剤として用いることができる。
EFFECT OF THE INVENTION The natural polymer material obtained by the present invention has a polyurethane polymer or a polymer chain of vinyl monomer bonded to it. That has
Further, the natural polymer material, which is the basic polymer, has a polyurethane chain or a polymer chain of a vinyl monomer bonded thereto, so that the mechanical strength is remarkably improved. The biodegradable polymer material of the present invention is used in any shape such as film, sheet, block, fiber and powder. The powdery one can be used as a filler for the thermoplastic resin.

【0013】[0013]

【実施例】次に本発明を実施例によりさらに詳細に説明
する。 実施例1 ブナチップをクレゾール/水混合溶液(容量混合比=8
/2)中において180℃で5時間蒸解した後のクレゾ
ール層から分離精製したソルボルシスリグニン(SL)
150重量部を、テトラヒドロフラン(THF)150
重量部に溶解させた。この溶液240重量部とポリメリ
ックジフェニルメタンジイソシアネート(MDI)10
0重量部を撹拌混合して反応溶液を得た。次に、この反
応溶液に天然高分子材料としての定性濾紙を浸漬し、反
応溶液を十分に含浸させた後、風乾し、得られた風乾物
をステンレス板の間に置き、115℃で4時間加熱して
反応させ、シート状物(ポリウレタン鎖の結合した濾
紙)を得た。また、前記と同様にして、濾紙に対するポ
リウレタン結合量(重量%)が種々異ったシート状物を
得た。前記のようにして得たシート状物について、その
応力−ヒズミ曲線を測定した。その結果を次表に示す。
EXAMPLES Next, the present invention will be described in more detail by way of examples. Example 1 Beech chips were mixed with cresol / water mixed solution (volume mixing ratio = 8).
/ 2) sorborsis lignin (SL) separated and purified from the cresol layer after digestion at 180 ° C for 5 hours
150 parts by weight of tetrahydrofuran (THF) 150
It was dissolved in 1 part by weight. 240 parts by weight of this solution and 10 parts of polymeric diphenylmethane diisocyanate (MDI)
0 parts by weight was mixed with stirring to obtain a reaction solution. Next, a qualitative filter paper as a natural polymer material was dipped in this reaction solution, sufficiently impregnated with the reaction solution, and then air-dried. The obtained air-dried product was placed between stainless plates and heated at 115 ° C. for 4 hours. And reacted to obtain a sheet-like material (polyurethane chain-bonded filter paper). Further, in the same manner as described above, sheet-like materials having various amounts (% by weight) of polyurethane bonded to the filter paper were obtained. The stress-strain curve of the sheet-like material obtained as described above was measured. The results are shown in the table below.

【0014】[0014]

【表1】 [Table 1]

【0015】実施例2 実施例1で示したSL100重量部と分子量400のポ
リプロピレングリコール(PPG)100重量部をTH
F100重量部に溶解させて溶液を作り、この溶液20
0重量部にMDI100重量部を撹拌混合して反応溶液
を得た。この反応溶液を用いて、実施例1と同様にして
ポリウレタン鎖を有するシート状物を得た。このように
して得たシート状物について、その応力−ヒズミ曲線を
測定した。その結果を表2に示す。
Example 2 100 parts by weight of SL shown in Example 1 and 100 parts by weight of polypropylene glycol (PPG) having a molecular weight of 400 were added to TH.
A solution is prepared by dissolving it in 100 parts by weight of F.
100 parts by weight of MDI was mixed with 0 parts by weight with stirring to obtain a reaction solution. Using this reaction solution, a sheet having a polyurethane chain was obtained in the same manner as in Example 1. The stress-strain curve of the sheet-like material thus obtained was measured. The results are shown in Table 2.

【0016】[0016]

【表2】 [Table 2]

【0017】実施例3 実施例1において、SLの代りにオタール蒸留残渣(W
T)を用いて以外は同様にしてシート状物を得た。この
シート状物について、その応力−ヒズミ曲線を測定し
た。その結果を表3に示す。
Example 3 In Example 1, instead of SL, an otar distillation residue (W
A sheet-like material was obtained in the same manner except that T) was used. The stress-strain curve of this sheet-shaped material was measured. The results are shown in Table 3.

【0018】[0018]

【表3】 [Table 3]

【0019】実施例4 実施例2において、SLの代りにWTを用いた以外は同
様にしてシート状物を得た。このシート状物について、
その応力−ヒズミ曲線を測定した。その結果を表4に示
す。
Example 4 A sheet-like material was obtained in the same manner as in Example 2 except that WT was used instead of SL. About this sheet
The stress-strain curve was measured. The results are shown in Table 4.

【0020】[0020]

【表4】 [Table 4]

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 ヒドロキシル基を含有する固体状天然高
分子材料に対して、そのヒドロキシル基を介してポリウ
レタン鎖を反応結合させてたものからなり、該ポリウレ
タン鎖の結合量が天然高分子材料に対して10重量%以
上であることを特徴とする生分解性高分子材料。
1. A solid natural polymer material containing a hydroxyl group in which a polyurethane chain is reactively bonded through the hydroxyl group, and the amount of the polyurethane chain bonded to the natural polymer material is 1. On the other hand, a biodegradable polymer material characterized by being 10% by weight or more.
【請求項2】 ヒドロキシル基を含有する固体状天然高
分子材料を、ポリイソシアネート化合物とポリオール化
合物を含む反応溶液と接触反応させることからなり、該
イソシアネート化合物とポリオール化合物の合計反応重
量が、該天然高分子材料に対して10重量%以上である
ことを特徴とする生分解性高分子材料の製造方法。
2. A solid natural polymer material containing a hydroxyl group is contact-reacted with a reaction solution containing a polyisocyanate compound and a polyol compound, and the total reaction weight of the isocyanate compound and the polyol compound is the natural product. A method for producing a biodegradable polymer material, which comprises 10% by weight or more of the polymer material.
【請求項3】 該ポリオール化合物の一部として、可溶
性のヒドロキシル基含有天然高分子を用いる請求項2の
方法。
3. The method according to claim 2, wherein a soluble hydroxyl group-containing natural polymer is used as a part of the polyol compound.
【請求項4】 ヒドロキシル基を含有する固体状天然高
分子材料に対して、そのヒドロキシル基の存在に起因す
る活性点を介してビニルモノマーをグラフト重合させた
ものからなり、該ビニルモノマーの重合体の結合量が、
該固体状天然高分子材料に対して10重量%以上である
ことを特徴とする生分解性高分子材料。
4. A polymer of a vinyl monomer, which is obtained by graft-polymerizing a vinyl monomer onto a solid natural polymer material containing a hydroxyl group via an active site due to the presence of the hydroxyl group. The binding amount of
A biodegradable polymer material, which is 10% by weight or more based on the solid natural polymer material.
【請求項5】 ヒドロキシル基を含有する固体状高分子
材料をビニルモノマー及びグラフト重合触媒を含む溶液
を接触反応させることからなり、該ビニルモノマーの反
応重量が、該天然高分子材料に対して10重量%以上で
ある生分解性高分子材料の製造方法。
5. A solid polymeric material containing a hydroxyl group is catalytically reacted with a solution containing a vinyl monomer and a graft polymerization catalyst, and the reaction weight of the vinyl monomer is 10 relative to the natural polymeric material. A method for producing a biodegradable polymer material, which comprises at least wt%.
JP3280502A 1991-09-30 1991-09-30 Biodegradable polymer material Expired - Lifetime JP2611171B2 (en)

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GB2260138A (en) 1993-04-07
GB9205892D0 (en) 1992-04-29

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