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Method for producing coagulated article

A manufacturing method and technology for coagulation, which are applied in textiles, papermaking, fiber processing, etc., can solve the problems of softness, poor flexibility, and easy breakage of the coating, and achieve the effects of suppressing manufacturing costs, easy disposal of waste liquid, and excellent hand feeling.

Inactive Publication Date: 2018-03-27
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, regarding the solidification of the water-based urethane resin composition based on thermal solidification, problems have been pointed out that the compounded solution of the urethane resin becomes temporarily low in viscosity due to heating, and the resin tends to adhere easily due to capillary phenomenon. At the fiber intersection point, the resin bundles the fibers, so the resulting coating has poor flexibility and flexibility and is easily damaged

Method used

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  • Method for producing coagulated article
  • Method for producing coagulated article

Examples

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Embodiment

[0094] Hereinafter, the present invention will be described in more detail using examples.

Synthetic example 1

[0095] [Synthesis Example 1] Preparation of Aqueous Urethane Resin Composition (X-1)

[0096] In the presence of 3281 parts by mass of methyl ethyl ketone and 0.1 part by mass of stannous octoate, 1000 parts by mass of polycarbonate polyol ("NIPPOLLAN 980R", manufactured by Nippon Polyurethane Co., Ltd., number average molecular weight: 2000), 2,2'-di 17 parts by mass of methylol propionic acid, 47 parts by mass of ethylene glycol and 344 parts by mass of diphenylmethane diisocyanate react at 70°C until the solution viscosity reaches 20000mPa·s, then add 3 parts by mass of methanol to stop the reaction to obtain aqueous amino A solution of formate resin (A-1) in methyl ethyl ketone. In this urethane resin solution, 70 parts by mass of polyoxyethylene distyrenated phenyl ether (Hydrophile-Lipophile Balance (Hydrophile-Lipophile Balance) (hereinafter abbreviated as "HLB"): 14) and triethyl After adding 13 parts by mass of amine, 800 parts by mass of ion-exchanged water was adde...

Synthetic example 2

[0098] [Synthesis Example 2] Preparation of Aqueous Urethane Resin Composition (X-2)

[0099] In the presence of 3281 parts by mass of methyl ethyl ketone and 0.1 part by mass of stannous octoate, 1000 parts by mass of polyether polyol ("PTMG2000", manufactured by Mitsubishi Chemical Corporation, number average molecular weight: 2000), 2,2'-dihydroxy 17 parts by mass of methacrylic acid, 47 parts by mass of ethylene glycol and 344 parts by mass of diphenylmethane diisocyanate were reacted at 70°C until the solution viscosity reached 20000mPa·s, then 3 parts by mass of methanol was added to stop the reaction, and water-based amino acids were obtained. A solution of formate resin (A-2) in methyl ethyl ketone. After mixing 70 parts by mass of polyoxyethylene distyrenated phenyl ether (HLB: 14) and 13 parts by mass of triethylamine in the urethane resin solution, 800 parts by mass of ion-exchanged water was added for phase inversion emulsification, Thus, an emulsion in which the ...

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Abstract

The invention provides a method for producing a coagulated article. The method is characterized in that the article is obtained by coagulating an aqueous urethane resin composition using a coagulant containing a metal salt and water heated to 40 DEG C or above. The problem to be overcome by the invention is to provide a manufacturing method by which a coagulated material having exceptional hand isobtained without using an organic solvent. A coagulated material having exceptional hand is obtained by the manufacturing method of the invention. In addition, since no organic solvent is used as a coagulation bath, there is no risk of exposure to harmful volatile substances or of the same being diffused into the environment, and production costs can be kept down since treatment of the waste solution of the coagulation bath is also simplified. Accordingly, the coagulated material obtained by the manufacturing method can be suitably used in the production of gloves, coatings, leather-form sheets, etc.

Description

technical field [0001] The present invention relates to a production method that can be used to produce a solidified product such as a leather swatch or the like. Background technique [0002] A water-based urethane resin composition in which a urethane resin is dispersed in an aqueous medium can reduce the burden on the environment compared with conventional organic solvent-based urethane resin compositions, so it has been used in recent years It is used as a material for manufacturing artificial leather, synthetic leather and other leather samples, coating agents, adhesives, etc. [0003] Generally speaking, the above-mentioned leather samples are mostly composed of fibrous substrates such as non-woven fabrics, an intermediate layer including a porous layer, etc. A product (impregnated layer) obtained by impregnating a water-based urethane resin composition into a fibrous base material such as woven fabric and solidified by heat is used as the above-mentioned fibrous base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/16C08G18/00C08G18/76C08J3/07C08J5/04
CPCC08J3/07C08J5/04C08G18/76C08G18/00C08J3/16D06N3/14D06M15/564C08G18/7671C08J2375/04D06M15/71
Inventor 铁井智博前田亮小松崎邦彦千千和宏之
Owner DIC CORP