JPH0366732A - Storing method of fine powder gelatin - Google Patents
Storing method of fine powder gelatinInfo
- Publication number
- JPH0366732A JPH0366732A JP20281289A JP20281289A JPH0366732A JP H0366732 A JPH0366732 A JP H0366732A JP 20281289 A JP20281289 A JP 20281289A JP 20281289 A JP20281289 A JP 20281289A JP H0366732 A JPH0366732 A JP H0366732A
- Authority
- JP
- Japan
- Prior art keywords
- gelatin
- finely powdered
- less
- fine powder
- ketone
- 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.)
- Pending
Links
- 108010010803 Gelatin Proteins 0.000 title claims abstract description 110
- 239000008273 gelatin Substances 0.000 title claims abstract description 110
- 229920000159 gelatin Polymers 0.000 title claims abstract description 110
- 235000019322 gelatine Nutrition 0.000 title claims abstract description 110
- 235000011852 gelatine desserts Nutrition 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims description 30
- 239000000843 powder Substances 0.000 title abstract description 8
- 150000002576 ketones Chemical class 0.000 claims abstract description 13
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000004321 preservation Methods 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 abstract description 26
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 abstract description 25
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract description 9
- 230000002776 aggregation Effects 0.000 abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003756 stirring Methods 0.000 abstract description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 239000008096 xylene Substances 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 54
- 229920002635 polyurethane Polymers 0.000 description 20
- 239000004814 polyurethane Substances 0.000 description 20
- 238000003860 storage Methods 0.000 description 15
- 239000012046 mixed solvent Substances 0.000 description 12
- 239000002609 medium Substances 0.000 description 11
- 239000002649 leather substitute Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 238000004220 aggregation Methods 0.000 description 4
- 230000036425 denaturation Effects 0.000 description 4
- 238000004925 denaturation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011550 stock solution Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000002612 dispersion medium Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- HXVNBWAKAOHACI-UHFFFAOYSA-N 2,4-dimethyl-3-pentanone Chemical compound CC(C)C(=O)C(C)C HXVNBWAKAOHACI-UHFFFAOYSA-N 0.000 description 2
- OJVAMHKKJGICOG-UHFFFAOYSA-N 2,5-hexanedione Chemical compound CC(=O)CCC(C)=O OJVAMHKKJGICOG-UHFFFAOYSA-N 0.000 description 2
- SYBYTAAJFKOIEJ-UHFFFAOYSA-N 3-Methylbutan-2-one Chemical compound CC(C)C(C)=O SYBYTAAJFKOIEJ-UHFFFAOYSA-N 0.000 description 2
- PFCHFHIRKBAQGU-UHFFFAOYSA-N 3-hexanone Chemical compound CCCC(=O)CC PFCHFHIRKBAQGU-UHFFFAOYSA-N 0.000 description 2
- HCFAJYNVAYBARA-UHFFFAOYSA-N 4-heptanone Chemical compound CCCC(=O)CCC HCFAJYNVAYBARA-UHFFFAOYSA-N 0.000 description 2
- FFWSICBKRCICMR-UHFFFAOYSA-N 5-methyl-2-hexanone Chemical compound CC(C)CCC(C)=O FFWSICBKRCICMR-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
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-UHFFFAOYSA-N 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920006264 polyurethane film Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- OZXIZRZFGJZWBF-UHFFFAOYSA-N 1,3,5-trimethyl-2-(2,4,6-trimethylphenoxy)benzene Chemical compound CC1=CC(C)=CC(C)=C1OC1=C(C)C=C(C)C=C1C OZXIZRZFGJZWBF-UHFFFAOYSA-N 0.000 description 1
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical compound CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 description 1
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical compound CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 1
- ZPVFWPFBNIEHGJ-UHFFFAOYSA-N 2-octanone Chemical compound CCCCCCC(C)=O ZPVFWPFBNIEHGJ-UHFFFAOYSA-N 0.000 description 1
- VGVHNLRUAMRIEW-UHFFFAOYSA-N 4-methylcyclohexan-1-one Chemical compound CC1CCC(=O)CC1 VGVHNLRUAMRIEW-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000008365 aromatic ketones Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000003997 cyclic ketones Chemical class 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- SHOJXDKTYKFBRD-UHFFFAOYSA-N mesityl oxide Natural products CC(C)=CC(C)=O SHOJXDKTYKFBRD-UHFFFAOYSA-N 0.000 description 1
- WSGCRAOTEDLMFQ-UHFFFAOYSA-N nonan-5-one Chemical compound CCCCC(=O)CCCC WSGCRAOTEDLMFQ-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、微粉末ゼラチンの保存方法に関し、より詳し
く言うと、合成皮革、特に、靴、家具、衣類等の人工皮
革製品の製造に用いられるポリウレタンの稀釈剤として
使用される溶剤中に微粉末ゼラチンを安定に保存するこ
とができる微粉末ゼラチンの保存方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for preserving finely powdered gelatin, and more specifically, the present invention relates to a method for preserving finely powdered gelatin. The present invention relates to a method for preserving finely powdered gelatin, which allows finely powdered gelatin to be stably preserved in a solvent used as a diluent for polyurethane.
熱可塑性樹脂にゼラチンを含有させる技術は、特開昭６
３−１５２６４２号公報や特開昭６３−１５２６４３号
公報に見られる。The technology for incorporating gelatin into thermoplastic resin was developed in Japanese Patent Application Publication No. 6
This can be seen in JP-A No. 3-152642 and JP-A-63-152643.
ところで、合成皮革や人工皮革製品の製造においては、
ポリウレタンにゼラチンを含有させ、フィルムの柔らか
さやつや消し感、さらには透湿性を向上させることが行
われる。このように微粉末ゼラチンをポリウレタン等の
ポリマーに含有させる場合、使用する微粉末ゼラチンの
性状がフィルムの品質を大きく左右するので、その性状
を好適に保つためにはその取扱い、特に保存方法が重要
となる。すなわち、微粉末ゼラチンは吸湿して凝集し易
く、これを微粉化してもゲル状になり易いので、ポリウ
レタン等との混合物からフィルム（例えば、１０〜１０
０μｍの厚さのフィルム）を作製する場合、フィルムの
表面に筋やボイドが発生し、高品質のフィルムの作製が
困難となるなどの問題点がある。これを避けるためには
、微粉末ゼラチンを絶乾状態で保存、取扱うことが望ま
しいが、現実には開封作業等での吸湿は避けられない、
また、微粉末ゼラチンは、−旦吸湿すると未凝集であっ
ても、約７０°Ｃ以上で乾燥するとその微量の水分の作
用によりゼラチン粒子同士が結合し凝集するので、予備
加熱乾燥しての保存も事実上不可能である。By the way, in the production of synthetic leather and artificial leather products,
Gelatin is added to polyurethane to improve the film's softness, matte feel, and moisture permeability. When finely powdered gelatin is incorporated into a polymer such as polyurethane in this way, the properties of the finely powdered gelatin used greatly affect the quality of the film, so its handling, especially the storage method, is important in order to maintain its properties. becomes. That is, finely powdered gelatin easily absorbs moisture and aggregates, and even if it is pulverized, it tends to become gel-like.
When producing a film with a thickness of 0 μm), there are problems such as streaks and voids occurring on the surface of the film, making it difficult to produce a high-quality film. To avoid this, it is desirable to store and handle finely powdered gelatin in an absolutely dry state, but in reality, moisture absorption during opening is unavoidable.
In addition, even if finely powdered gelatin is unagglomerated once it absorbs moisture, if it is dried at about 70°C or higher, the gelatin particles will bond and aggregate due to the action of a small amount of moisture, so it should be stored by preheating and drying. is also virtually impossible.
このように微粉末ゼラチンは、単体では吸湿、凝集を避
けた保存及び取扱いが困難であるので、これを改善すべ
く、例えばジメチルホルムアミド（ＤＭＦ）に微粉末ゼ
ラチンを分散させて保存する方法が提案されている。し
かしながら、この従来の保存方法においては、ＤＭＦ中
でゼラチンが経時的に変性をきたし、次第に凝集を起こ
して分散が不良となり、遂にはゼラチンは固まってしま
うなどの重大な問題を生じ、従ってＤＭＦ中で保存する
という従来の保存方法では長期間の保存には適さないな
どの問題点があった。As described above, it is difficult to store and handle finely powdered gelatin alone without absorbing moisture or agglomerating it.To improve this, a method has been proposed in which finely powdered gelatin is stored by dispersing it in dimethylformamide (DMF), for example. has been done. However, in this conventional preservation method, gelatin denatures in DMF over time, gradually causes aggregation, poor dispersion, and finally gelatin solidifies, resulting in serious problems. The conventional method of preservation, which involves storing the product in a vacuum, has problems such as being unsuitable for long-term storage.
本発明は、前記事情に鑑みてなされたものである。 The present invention has been made in view of the above circumstances.
本発明の目的は、前記問題点を解決し、長期にわたりゼ
ラチンの凝集を防止し、良好な分散状態及び再分散性を
維持することができ、特にポリウレタンに微粉末ゼラチ
ンを含有させてフィルムを作製する際にも、微粉末ゼラ
チンの凝集がなく且つ均一に混合することができ、フィ
ルム表面の筋やボイドなどの発生を抑制し、支障なく使
用することができるなど、微粉末ゼラチンの性状を長期
間好適に保持することができる実用上著しく有利な微粉
末ゼラチンの保存方法を提供することにある。The purpose of the present invention is to solve the above-mentioned problems, to prevent agglomeration of gelatin over a long period of time, and to maintain good dispersion and redispersibility.In particular, it is possible to produce a film by incorporating finely powdered gelatin into polyurethane. Even when the gelatin powder is mixed, there is no agglomeration of the gelatin powder, and it can be mixed uniformly, suppressing the occurrence of streaks and voids on the film surface, and allowing the gelatin to be used without any problems. The object of the present invention is to provide a method for preserving finely powdered gelatin, which is extremely advantageous in practice and can be preserved for a suitable period of time.
本発明者らは、前記目的を遠戚するために鋭意研究を重
ねた結果、微粉末ゼラチンを水分含量が特定の値以下の
特定の媒体中に、特定の割合以下で分散させるという方
法が、その目的を満足する優れた保存方法であることを
見出し、その知見に基づいて本発明を完成するに至った
。As a result of extensive research in order to achieve the above object, the present inventors have discovered a method in which finely powdered gelatin is dispersed in a specific medium with a moisture content below a specific value at a specific ratio or below. We have discovered that this is an excellent preservation method that satisfies the purpose, and have completed the present invention based on this knowledge.
すなわち、本発明は、ケトン類及び／又は芳香族炭化水
素類からなり、水分含有量が０．５重量％以下であり且
つ常温で液体である媒体中に、微粉末ゼラチンを５４重
量％以下の割合で分散させることを特徴をする微粉末ゼ
ラチンの保存方法を提供するものである。That is, the present invention involves adding 54% by weight or less of finely powdered gelatin to a medium that is composed of ketones and/or aromatic hydrocarbons, has a water content of 0.5% by weight or less, and is liquid at room temperature. The present invention provides a method for preserving finely powdered gelatin, which is characterized by dispersing it in a proportion.
本発明の方法において、前記微粉末ゼラチンは、その種
類及び粒径としては特に制限はなく、目的に応じて各種
のものを適宜選定して使用することができるが、通常、
分子量がｉ、ｏｏｏ〜１００゜０００程度の範囲内にあ
るものが好適に使用することができる。また、微粉末ゼ
ラチンをポリウレタン等の樹脂等に分散させて合成皮革
や人工皮革の表皮として使用する１０〜１００μｍ程度
の厚さのフィルムを作製する場合には、十分に均一な分
散性や好適な透湿性を得るためには、微粉末ゼラチンの
粒径を５０μｍ以下とすることが好ましい、なお、その
際微粉末ゼラチンの平均粒径は作製する膜の厚み以下と
するのが好ましい、また、前記ケトン類又は芳香族炭化
水素類からなる媒体中に分散する際に使用する微粉末ゼ
ラチンの水分含量としては、通常、１重量％以下とする
ことが望ましい。In the method of the present invention, the type and particle size of the finely powdered gelatin are not particularly limited, and various types can be appropriately selected and used depending on the purpose.
Those having a molecular weight within the range of about i,ooo to 100°000 can be suitably used. In addition, when dispersing finely powdered gelatin in a resin such as polyurethane to produce a film with a thickness of about 10 to 100 μm to be used as the skin of synthetic leather or artificial leather, it is necessary to obtain sufficiently uniform dispersibility and suitable In order to obtain moisture permeability, it is preferable that the particle size of the finely powdered gelatin is 50 μm or less; in this case, the average particle size of the finely powdered gelatin is preferably not more than the thickness of the membrane to be produced; The water content of finely powdered gelatin used for dispersion in a medium consisting of ketones or aromatic hydrocarbons is usually desirably 1% by weight or less.
本発明の方法において、前記微粉末ゼラチンを分散させ
る媒体又はその成分として使用する前記ケトン類及び芳
香族炭化水素類としては、各種のものを使用することが
できるが、通常、例えば、次に示すものが好適に使用す
ることができる。In the method of the present invention, various types of ketones and aromatic hydrocarbons can be used as the medium for dispersing the finely powdered gelatin or as components thereof, but usually, for example, the following ones are used: can be suitably used.
すなわち、前記ケトン類の具体例としては、例えば、ア
セトン、アセトニルアセトン、ジエチルケトン、ジプロ
ピルケトン、ジイソプロピルケトン、ジブチルケトン、
ジイソブチルケトン、メチルエチルケトン、メチルプロ
ピルケトン、メチルイソプロピルケトン、メチルブチル
ケトン、メチルイソブチルケトン、メチルアミルケトン
、メチルイソアミルケトン、メチル−ｎ−へキシルケト
ン、エチルプロピルケトン、メシチルオキシド等の鎖状
ケトン類、シクロペンタノン、シクロヘキサノン、メチ
ルシクロヘキサノン等の環状ケトン類、メチルフェニル
ケトン等の芳香族系ケトン類などを挙げることができる
。これらの中でも特に、メチルエチルケトン、アセトン
などが好ましい。That is, specific examples of the ketones include acetone, acetonylacetone, diethyl ketone, dipropyl ketone, diisopropyl ketone, dibutyl ketone,
Chain ketones such as diisobutyl ketone, methyl ethyl ketone, methyl propyl ketone, methyl isopropyl ketone, methyl butyl ketone, methyl isobutyl ketone, methyl amyl ketone, methyl isoamyl ketone, methyl-n-hexyl ketone, ethyl propyl ketone, mesityl oxide, Examples include cyclic ketones such as cyclopentanone, cyclohexanone, and methylcyclohexanone, and aromatic ketones such as methylphenyl ketone. Among these, methyl ethyl ketone, acetone and the like are particularly preferred.
なお、これらは１種単独で用いてもよく、２種以上を併
用してもよい。In addition, these may be used individually by 1 type, and may use 2 or more types together.
前記芳香族炭化水素類の具体例としては７、例えば、ベ
ンゼン、トルエン、キシレン、エチルベンゼンなどを挙
げることができる。これらの中でも特に、トルエン、キ
シレンなどが好ましい。Specific examples of the aromatic hydrocarbons include benzene, toluene, xylene, and ethylbenzene. Among these, toluene, xylene, etc. are particularly preferred.
なお、これらは、１種単独で用いてもよく、２種以上を
併用してもよい。In addition, these may be used individually by 1 type, and may use 2 or more types together.
また、前記ケトン類と芳香族炭化水素類を混合して使用
することもできる。Furthermore, the ketones and aromatic hydrocarbons may be used in combination.
本発明の方法においては、これらのケトン類及び芳香族
炭化水素類からなる前記媒体は、その水分含量が０．５
重量％以下であるものを使用する。In the method of the present invention, the medium comprising these ketones and aromatic hydrocarbons has a water content of 0.5.
% by weight or less.
この水分含量が０．５重量％を超えると、保存時又はフ
ィルムの作製の際に微粉末ゼラチンが凝集したり、ゲル
化することがあり、本発明の目的を十分に達成すること
ができない。If the water content exceeds 0.5% by weight, the finely powdered gelatin may aggregate or gel during storage or film production, making it impossible to fully achieve the object of the present invention.
前記ケトン類及び芳香族炭化水素類は、水分含量が０．
５重量％以下であれば、市販品をそのまま分散用媒体と
して使用することもできるし、分散用媒体の水分含量を
０．５重量％以下とするならば、市販品を混合したり、
蒸留、脱水等の精製を施したり、新たに合成したものを
適宜使用することができる。The ketones and aromatic hydrocarbons have a water content of 0.
If it is 5% by weight or less, a commercially available product can be used as it is as a dispersion medium, or if the water content of the dispersion medium is 0.5% by weight or less, a commercially available product can be mixed,
It can be purified by distillation, dehydration, etc., or it can be newly synthesized and used as appropriate.
なお、前記ケトン類及び芳香族炭化水素類あるいは前記
媒体は、本発明の目的に支障のない範囲内で他の成分を
含有していてもよい。Note that the ketones and aromatic hydrocarbons or the medium may contain other components within a range that does not interfere with the purpose of the present invention.
本発明の方法においては、前記媒体中における微粉末ゼ
ラチンの割合は、５４重量％以下、好ましくは５０重量
％以下に設定する。この割合が５４重量％を超えると分
散はするものの分散液が粘稠になるため、フィルムを作
製するに際してその取扱いがうまくいかないことがある
。また、この割合を５０重量％以下とすると、そのまま
では十分な流動性が得られない場合にも、例えば分散液
を振とうさせるという簡単な操作で十分な流動性を得る
ことができるので実用上好ましくなる。−方、この割合
の下限としては特に制限はなく、所望に応じて適宜選定
すればよい。In the method of the present invention, the proportion of finely powdered gelatin in the medium is set to 54% by weight or less, preferably 50% by weight or less. If this proportion exceeds 54% by weight, although the dispersion is possible, the dispersion becomes viscous, which may result in difficulty in handling it when producing a film. In addition, if this ratio is 50% by weight or less, even if sufficient fluidity cannot be obtained as it is, sufficient fluidity can be obtained by a simple operation such as shaking the dispersion, which is practical. It becomes preferable. - On the other hand, there is no particular restriction on the lower limit of this ratio, and it may be appropriately selected as desired.
本発明の方法においては、前記ケトン類又は芳香族炭化
水素類からなる前記媒体に前記微粉末ゼラチンを前記特
定の範囲内の割合で分散させた微粉末ゼラチン分散液を
調製し、これを所望の期間保存する。In the method of the present invention, a finely powdered gelatin dispersion is prepared by dispersing the finely powdered gelatin in the medium containing the ketones or aromatic hydrocarbons at a ratio within the specified range, and this is dispersed in the desired amount. Save for a period of time.
この微粉末ゼラチン分散液の調製方法、具体的には各成
分の添加順序や分散方法としては特に制限はないが、通
常、前記媒体中に前記微粉末ゼラチンを添加し、十分な
懸濁状態になるよう攪拌する方法が好適に適用すること
ができる。なお、この攪拌・分散は、常温もしくは常温
付近で好適に行うことができる。また、この攪拌・分散
は空気の開放下でも十分に行いうるが、例えば、乾燥空
気や乾燥窒素など乾燥雰囲気下で行うことにより新たな
水分の混入をより有効に防止することができ、さらには
それらの乾燥ガスのシール下で行うことにより媒体の蒸
発をも防止することができる。There are no particular restrictions on the method for preparing this finely powdered gelatin dispersion, specifically the order in which each component is added or the dispersion method, but usually the finely powdered gelatin is added to the medium and brought into a sufficiently suspended state. A method of stirring so as to achieve the following can be suitably applied. Note that this stirring and dispersion can be suitably performed at or around room temperature. In addition, although this stirring and dispersion can be carried out sufficiently in the open air, for example, by carrying out the stirring and dispersion in a dry atmosphere such as dry air or dry nitrogen, it is possible to more effectively prevent the contamination of new moisture. Evaporation of the medium can also be prevented by carrying out the process under a seal of dry gas.
本発明の方法において、この微粉末ゼラチン分散液の保
存雰囲気としては、分散媒体の蒸発、水分の混入、微粉
末ゼラチンの変性が十分に防止できる雰囲気であれば特
に制限はなく、その保存は、短期間の保存の場合には、
空気の開放下で行ってもよいが、長期間の保存の場合に
は、密封状態で保存することが望ましく、乾燥空気や乾
燥窒素など乾燥雰囲気下でシールし、密封状態で保存す
ることがより望ましい、保存の温度としては、微粉末ゼ
ラチンの変性が防止できる温度であれば特に制限はない
が、通常は常温もしくは常温付近で好適に保存すること
ができる。In the method of the present invention, there is no particular restriction on the storage atmosphere for the finely powdered gelatin dispersion as long as it is an atmosphere that can sufficiently prevent evaporation of the dispersion medium, contamination of moisture, and denaturation of the finely powdered gelatin; For short-term storage,
This may be done in the open air, but for long-term storage, it is preferable to store it in a sealed state, and it is better to store it in a sealed state under a dry atmosphere such as dry air or dry nitrogen. The desired storage temperature is not particularly limited as long as the denaturation of the finely powdered gelatin can be prevented, but it can usually be stored suitably at or around room temperature.
以上のように、本発明に係る前記微粉末ゼラチン分散液
を適宜密封して保存することにより、長期にわたりゼラ
チンの変性や凝集を防止し、良好な分散状態及び再分散
性を維持することができる。As described above, by appropriately sealing and storing the finely powdered gelatin dispersion according to the present invention, denaturation and aggregation of gelatin can be prevented and good dispersion state and redispersibility can be maintained over a long period of time. .
また、使用に際して開封しても、長期間空気の開放下に
放置しない限り、再度密封することにより新たに長期間
、上記の如き安定な保存を行うことができるので、長期
間にわたる保存−使用又は使用−保存を支障なく繰り返
すことができる。In addition, even if the package is opened for use, as long as it is not left exposed to air for a long period of time, it can be resealed and stored stably for a new long period of time. Use and storage can be repeated without problems.
なお、微粉末ゼラチンは、単体のまま空気中に放置した
場合、平衡水分量が通常７〜８重量％程度にも達するが
、微粉末ゼラチンを前記微粉末ゼラチン分散液とするこ
とにより、長期間の保存及び使用の際の取扱い時に水分
の吸収を著しく防止することができ、水分量を調製時の
微粉末ゼラチン分散液のそれと同程度の低い値に維持す
ることができる。In addition, when finely powdered gelatin is left alone in the air, its equilibrium moisture content usually reaches about 7 to 8% by weight, but by making finely powdered gelatin into the finely powdered gelatin dispersion, It is possible to significantly prevent moisture absorption during handling during storage and use, and the moisture content can be maintained at a value as low as that of the finely powdered gelatin dispersion during preparation.
従って、本発明に係る前記微粉末ゼラチン分散液は、使
用に際しても微粉末ゼラチンの凝集やゲル化あるいはそ
れに伴う種々の問題の発生が防止でき、支障なく使用す
ることができる。例えば、ポリウレタン等の樹脂等に微
粉末ゼラチンを含有させてフィルムを作製する際にも、
より具体的には例えば、合成皮革や人工皮革製品の表皮
用のフィルムを作製するに当たり本発明に係る前記微粉
末ゼラチン分散液をポリウレタン溶液（例えば、ＤＭＦ
溶液など）とを混合しフィルムを作製する際にも、微粉
末ゼラチンの凝集がなく且つ均一に混合することができ
、フィルム表面の筋やボイドなどの発生を抑制すること
ができるので、高品質のフィルムを容易に得ることがで
きる。Therefore, the finely powdered gelatin dispersion according to the present invention can be used without any problems since aggregation and gelation of the finely powdered gelatin and various problems associated therewith can be prevented. For example, when making a film by incorporating finely powdered gelatin into a resin such as polyurethane,
More specifically, for example, when producing a film for the skin of synthetic leather or artificial leather products, the finely powdered gelatin dispersion according to the present invention is mixed with a polyurethane solution (for example, DMF
When preparing a film by mixing gelatin (solutions, etc.), the gelatin powder can be mixed uniformly without agglomeration, and the generation of streaks and voids on the film surface can be suppressed, resulting in high quality. film can be easily obtained.
なお、合成皮革や人工皮革製品の表皮として広く使用さ
れる微粉末ゼラチン含有ポリウレタンフィルムの作製は
、公知の手法に従って好適に行うことができる。すなわ
ち、ポリウレタン原液（例えば、ポリウレタンのＤＭＦ
溶液、あるいはこれに他の溶剤や添加物を含有する溶液
）と前記微粉末ゼラチン分散液を混合・撹拌し、微粉末
ゼラチンを均一に！！！濁・分散させ、所望に応じてポ
リウレタンの溶剤（例えば、ＤＭＦ）を適量添加・混合
して粘度を調製し、得られたポリウレタン／微粉末ゼラ
チン混合液を離型紙上に、バーコーターやドクターブレ
ード等を用いて塗布（コーティング）し、溶剤（ＤＭＦ
等のポリウレタン溶剤及びトルエンやメチルエチルケト
ン等の微粉末ゼラチン分散液中の溶剤など）の揮発する
温度に加熱し、乾燥し、例えば、１０〜１００μｍ程度
の厚さのフィルムとする方法等が好適に利用することが
できる。本発明に係る前記微粉末ゼラチン分散液を用い
ることにより、合成皮革や人工皮革製品の表皮用フィル
ムをはじめとする各種の微粉末ゼラチン含有製品の品質
を著しく向上させることができる。Incidentally, a polyurethane film containing finely powdered gelatin, which is widely used as the skin of synthetic leather and artificial leather products, can be suitably produced according to a known method. That is, polyurethane stock solution (for example, DMF of polyurethane)
(or a solution containing other solvents and additives) and the finely powdered gelatin dispersion, mix and stir to make the finely powdered gelatin uniform! ! ! The viscosity is adjusted by adding and mixing an appropriate amount of polyurethane solvent (for example, DMF) as desired, and the resulting polyurethane/finely powdered gelatin mixture is coated on release paper using a bar coater or doctor blade. etc., and apply (coating) using a solvent (DMF
Polyurethane solvents such as polyurethane solvents such as toluene, methyl ethyl ketone, and other solvents in finely powdered gelatin dispersions) are heated to a temperature at which they volatilize, and then dried to form a film with a thickness of about 10 to 100 μm. can do. By using the finely powdered gelatin dispersion according to the present invention, the quality of various products containing finely powdered gelatin, including films for the skin of synthetic leather and artificial leather products, can be significantly improved.
以下、本発明を実施例に基づいて詳細に説明するが、本
発明はこれに限定されるものではない。Hereinafter, the present invention will be explained in detail based on Examples, but the present invention is not limited thereto.
下記の実施例、比較例及び参考例の条件及び結果の評価
を第１表に示す。Table 1 shows the conditions and result evaluations of Examples, Comparative Examples, and Reference Examples below.
実施例１
ゼラチン（分子Ｎｉｌ、０００）で平均粒径５μｍのも
のに市販のＭＥＫ （特級）をゼラチン濃度が３０ｗｔ
％となるよう添加し、常温で攪拌分散させ混合ＭＥＫ溶
剤とした。ゼラチン／ＭＥＫ混合溶剤はＭＥＫの揮発防
止とゼラチンの吸湿防止のため、密封容器、中に保存し
た。保存中ゼラチンは沈降したが、３０分後に容器ごと
振とうすることで容易に再分散した。ゼラチン／ＭＥＫ
混合溶剤作製後保存中、３時間後、１日後、３日後、３
１日後も容器ごと振とうすることで容易に再分散した。Example 1 Gelatin (molecular Nil, 000) with an average particle size of 5 μm was mixed with commercially available MEK (special grade) at a gelatin concentration of 30 wt.
% and stirred and dispersed at room temperature to obtain a mixed MEK solvent. The gelatin/MEK mixed solvent was stored in a sealed container to prevent MEK from volatilizing and gelatin from absorbing moisture. Gelatin sedimented during storage, but was easily redispersed by shaking the container 30 minutes later. Gelatin/MEK
During storage after preparing mixed solvent, 3 hours later, 1 day later, 3 days later, 3
Even after one day, the mixture was easily redispersed by shaking the container.
また、ポリウレタン原液（大日精化しザミンＭＥ３６１
２ＬＰ）と３１日間保存し再分散させたゼラチン／ＭＥ
Ｋ混合溶剤及びＤＭＦで混合したポリウレタンではドク
ターブレードにより良好に離型紙の上にコーティングで
きた。なお、乾燥後のポリウレタンフィルムにはゼラチ
ンを４０−ｔ％含んでいた。In addition, polyurethane stock solution (Dainichiseika Shizamin ME361
2LP) and gelatin/ME stored for 31 days and redispersed.
Polyurethane mixed with K mixed solvent and DMF could be coated onto release paper well using a doctor blade. Note that the polyurethane film after drying contained 40-t% gelatin.
実施例２〜６
実施例１でゼラチンの分子量を１０，０００、平均粒径
を５μｍ、３０ｕｍ、５０ａｍと変え、またＭＥＫ或い
はトルエン（特級）混合溶剤としたほかは実施例１と同
様に行った。Examples 2 to 6 The same procedure as in Example 1 was carried out except that the molecular weight of gelatin was changed to 10,000, the average particle size was changed to 5 μm, 30 um, and 50 am, and MEK or toluene (special grade) mixed solvent was used. .
結果は実施例１と同様に極めて良好であった。The results were very good as in Example 1.
実施例７
実施例１でゼラチンの分子量を１００．０００とし、平
均粒径を３０μｍと変えたほかは実施例１と同様に行っ
た。Example 7 The same procedure as in Example 1 was carried out except that the molecular weight of gelatin in Example 1 was changed to 100.000 and the average particle size was changed to 30 μm.
結果は実施例１と同様に極めて良好であった。The results were very good as in Example 1.
実施例８〜９
実施例１でゼラチンの分子量を１０，０００とし、ゼラ
チン濃度を１０ｗｔ％又は５０ｗｔ％となるようにした
ほかは実施例１と同様に行った。Examples 8 to 9 The same procedure as in Example 1 was carried out except that the molecular weight of gelatin in Example 1 was set to 10,000 and the gelatin concentration was set to 10 wt% or 50 wt%.
結果は実施例１と同様に極めて良好であった。The results were very good as in Example 1.
実施例１０〜１１
ゼラチンの分子量をｔｏ、ｏｏｏとし、ゼラチン濃度を
３０−ｔ％となるようアセトン或いはキシレン混合溶剤
としたほかは実施例１と同様に行った。Examples 10 to 11 The same procedure as in Example 1 was carried out except that the molecular weight of gelatin was set to to and ooo, and acetone or xylene mixed solvent was used so that the gelatin concentration was 30-t%.
結果は実施例１と同様に極めて良好であった。The results were very good as in Example 1.
比較例１
ゼラチン（分子量１．０００）平均粒径５μｍのものに
市販のＤＭＦ （特級）をゼラチン濃度が３０ｗｔ％と
なるよう添加し、常温で攪拌分散させ混合ＤＭＦ溶剤と
した。ゼラチン／ＤＭＦ混合溶剤はＤＭＦの揮発防止の
ため、密封容器中に保存した保存中ゼラチンは沈降した
が、３０分後に容器ごと激しく振とうすることで再分散
した。ゼラチン／ＤＭＦ混合溶剤作製後保存中、３時間
後に振とうするとゼラチンの一部に凝集を生じていた。Comparative Example 1 Commercially available DMF (special grade) was added to gelatin (molecular weight 1.000) having an average particle diameter of 5 μm so that the gelatin concentration was 30 wt%, and the mixture was stirred and dispersed at room temperature to obtain a mixed DMF solvent. The gelatin/DMF mixed solvent was used to prevent the volatilization of DMF, so the gelatin was stored in a sealed container. During storage, the gelatin sedimented, but was redispersed by shaking the container vigorously after 30 minutes. During storage after preparing the gelatin/DMF mixed solvent, some of the gelatin agglomerated when shaken 3 hours later.
さらにゼラチン／ＤＭＦ混合溶剤作製後１日後、３日後
、３１日後にはゼラチンが固まり、全く分散しなくなっ
た。また、ポリウレタン原液（大日精化しザ藁ンＭＥ３
６１２ＬＰ）とゼラチン／ＤＭＦ混合溶剤作製後３時間
の混合溶剤及びＤＭＦ／ＭＥＫ（混合比５０１５０ ）
で混合したポリウレタンではドクターブレードによる離
型紙状のコーテイング面に筋を生じたり、所々にゼラチ
ンの固まりが見られるなど欠陥を生じた。Furthermore, 1 day, 3 days, and 31 days after preparing the gelatin/DMF mixed solvent, the gelatin solidified and was no longer dispersed at all. In addition, polyurethane stock solution (Dainichiseika Shizawara ME3)
612LP) and gelatin/DMF mixed solvent 3 hours after preparation and DMF/MEK (mixing ratio 50150)
The polyurethane mixed with this product had defects such as streaks on the release paper-like coating surface caused by the doctor blade and gelatin clumps seen in some places.
比較例２〜４
比較例１でゼラチンの分子量をｉｏ、ｏｏｏ、ｉｏｏ、
ｏｏｏと変えＤＭＦ （特級）混合溶剤としたほかは比
較例１と同様に行った。また、分子量１０，０００では
平均粒径を３０ａｍとした。Comparative Examples 2 to 4 In Comparative Example 1, the molecular weight of gelatin was changed to io, ooo, ioo,
The same procedure as Comparative Example 1 was carried out except that DMF (special grade) mixed solvent was used instead of ooo. Further, when the molecular weight was 10,000, the average particle size was 30 am.
結果は比較例１と同様の問題が生じた。As a result, the same problem as in Comparative Example 1 occurred.
比較例５
比較例１でゼラチンの分子量をｉｏ、ｏｏｏとし、ゼラ
チン濃度が５５ｗｔ％となるように市販のＭＥＫ （特
級）を注いだが分散状態にならなかった。Comparative Example 5 In Comparative Example 1, the molecular weight of gelatin was set to io and ooo, and commercially available MEK (special grade) was poured so that the gelatin concentration was 55 wt%, but it did not become dispersed.
合溶剤はＭＥＫの揮発防止とゼラチンの吸湿防止のため
、密封容器中に保存した。保存中ゼラチンは沈降したが
、３０分後に容器ごと振とうすることで容易に再分散し
た。ゼラチン／ＭＥＫ混合溶剤作製後保存中、３時間後
、１日後、３日後、３１日後も容器ごと振とうすること
で容易に再分散した。また、ポリウレタン原液（大日精
化しザミンＭＥ３６１２ＬＰ）と３１日間保存し再分散
させたゼラチン／ＭＥＫ混合溶剤及びＤＭＦで混合した
ポリウレタンではドクターブレードによる離型紙上のコ
ーテイング面に筋を生じ欠陥を生じた。The solvent mixture was stored in a sealed container to prevent MEK from volatilizing and gelatin from absorbing moisture. Gelatin sedimented during storage, but was easily redispersed by shaking the container 30 minutes later. During storage after preparation of the gelatin/MEK mixed solvent, it was easily redispersed by shaking the container 3 hours, 1 day, 3 days, and 31 days later. In addition, polyurethane mixed with a polyurethane stock solution (Dainichiseika's Zamin ME3612LP), a gelatin/MEK mixed solvent stored for 31 days and redispersed, and DMF caused streaks and defects on the coating surface on the release paper by the doctor blade.
参考例
ゼラチン（分子量１０，０００）平均粒径６０μｍのも
のに市販のＭＥＫ （特級）をゼラチン濃度が３０ｗｔ
％となるよう添加し、常温で攪拌分散させ混合ＭＥＫ溶
剤とした。ゼラチン／ＭＥＫ混〔発明の効果〕
本発明によると、微粉末ゼラチンを特定の媒体に分散さ
せているので、長期にわたりゼラチンの変性及び凝集を
防止し、良好な分散状態及び再分散性を維持することが
でき、特にポリウレタンに微粉末ゼラチンを含有させて
フィルムを作製する際にも、微粉末ゼラチンの凝集がな
く且つ均一に混合することができ、フィルム表面の筋や
ボイドなどの発生を抑制し、支障なく使用することがで
きるなど、微粉末ゼラチンの性状を長期間好適に保持す
ることができる実用上著しく有利な微粉末ゼラチンの保
存方法を提供することができる。Reference example Gelatin (molecular weight 10,000) with an average particle size of 60 μm was prepared using commercially available MEK (special grade) with a gelatin concentration of 30 wt.
% and stirred and dispersed at room temperature to obtain a mixed MEK solvent. Gelatin/MEK Mix [Effects of the Invention] According to the present invention, since finely powdered gelatin is dispersed in a specific medium, denaturation and aggregation of gelatin are prevented over a long period of time, and good dispersion state and redispersibility are maintained. In particular, when making a film by incorporating finely powdered gelatin into polyurethane, the finely powdered gelatin does not aggregate and can be mixed uniformly, suppressing the occurrence of streaks and voids on the film surface. It is possible to provide a method for preserving finely powdered gelatin that is extremely advantageous in practice and can suitably maintain the properties of finely powdered gelatin for a long period of time, such as being able to be used without any problems.
Claims (1)
分含有量が０．５重量％以下であり且つ常温で液体であ
る媒体中に、微粉末ゼラチンを５４重量％以下の割合で
分散させることを特徴とする微粉末ゼラチンの保存方法
。 ２、微粉末ゼラチンの粒径が５μｍ以下である請求項１
記載の微粉末ゼラチンの保存方法。[Claims] 1. 54% by weight of finely powdered gelatin in a medium containing ketones and/or aromatic hydrocarbons, having a water content of 0.5% by weight or less and being liquid at room temperature. A method for preserving finely powdered gelatin characterized by dispersing it in the following proportions. 2. Claim 1, wherein the particle size of the finely powdered gelatin is 5 μm or less.
Preservation method of finely powdered gelatin as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20281289A JPH0366732A (en) | 1989-08-07 | 1989-08-07 | Storing method of fine powder gelatin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20281289A JPH0366732A (en) | 1989-08-07 | 1989-08-07 | Storing method of fine powder gelatin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366732A true JPH0366732A (en) | 1991-03-22 |
Family
ID=16463611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20281289A Pending JPH0366732A (en) | 1989-08-07 | 1989-08-07 | Storing method of fine powder gelatin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366732A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5424015A (en) * | 1992-09-29 | 1995-06-13 | Yamashita Rubber Kabushiki Kaisha | Method and device for manufacturing rubber bend pipe |
| JP2009523557A (en) * | 2006-01-20 | 2009-06-25 | アルディラ インコーポレイテッド | Golf club shaft and manufacturing method thereof |
-
1989
- 1989-08-07 JP JP20281289A patent/JPH0366732A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5424015A (en) * | 1992-09-29 | 1995-06-13 | Yamashita Rubber Kabushiki Kaisha | Method and device for manufacturing rubber bend pipe |
| JP2009523557A (en) * | 2006-01-20 | 2009-06-25 | アルディラ インコーポレイテッド | Golf club shaft and manufacturing method thereof |
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