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Composition for forming foam, foam, method for producing foam, and material for leather

A foam and composition technology, which is applied in the field of leather materials, can solve the problems of insufficient foaming, reduced foam strength, and long-term use, and achieve satisfactory hand feeling and satisfactory material breaking strength. Effect

Active Publication Date: 2022-05-06
NICCA CHEM COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the conventional method for producing a foam described in Patent Document 4, the foam-forming composition used has insufficient foamability. In the case of foaming in a manner of 3 times or more, it takes a relatively long time (for example, it takes a long time of more than 20 minutes for the foaming ratio to reach 3 times, and further, it takes more than 20 minutes for the foaming ratio to reach 4 times long time)
In addition, in the conventional method for producing a foam described in Patent Document 4, if the compounding amount of the foaming agent is increased in order to improve the foamability of the raw material, there is a problem that the strength of the foam decreases.

Method used

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  • Composition for forming foam, foam, method for producing foam, and material for leather
  • Composition for forming foam, foam, method for producing foam, and material for leather
  • Composition for forming foam, foam, method for producing foam, and material for leather

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Embodiment

[0214] The present invention will be described more specifically below based on examples and comparative examples, but the present invention is not limited to the following examples.

[0215] First, the preparation method of the components used in each Example etc. is as follows.

preparation example 1

[0216] (Preparation example 1: Preparation of material for skin layer formation)

[0217]

[0218] First, mix the ingredients according to the following composition to adjust the liquid to obtain a liquid composition, and then leave the liquid composition at 25°C for 1 day (24 hours) to obtain a skin layer forming water-based Polyurethane resin composition. The viscosity of the composition thus obtained was 3200 mPa·s (BM type viscometer, No. 4 rotor, 60 rpm).

[0219] [Composition of water-based polyurethane resin composition for skin layer formation (amount of each component used)]

[0220] EVAFANOL HA-107C (manufactured by Nikka Chemical Co., Ltd., aqueous dispersion of water-based polyurethane resin) 100g;

[0221] NEOSTECKER N (associative thickener produced by Nikka Chemical Co., Ltd.) 3g;

[0222] NXH-6022 (manufactured by Nikka Chemical Co., Ltd., antifoaming agent) 0.1 g.

[0223]

[0224] Next, the water-based polyurethane resin composition for forming the sk...

preparation example 2

[0225] (Preparation Example 2: Preparation of self-emulsifying water-based polyurethane resin (component (A)) having a sulfonate group)

[0226] In a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer, and a nitrogen inlet tube, add polycarbonate diol (trade name "ETERNACOLL UH" produced by Ube Industries, Ltd.) using 1,6-hexanediol as a raw material. -100”, weight average molecular weight 1,000) 213.8 parts by mass, 0.002 parts by mass of dibutyltin dilaurate and 75 parts by mass of acetone, after uniform mixing, add 73.0 parts by mass of isophorone diisocyanate, react at 80°C for 90 minutes, and obtain An acetone solution of an isocyanate group-terminated prepolymer having a free isocyanate group content of 2.7% by mass.

[0227]After the above solution was cooled to below 50°C, 625.0 parts by mass of acetone was added to the above solution, and after further cooling to below 30°C, an aqueous solution containing 2-(2-aminoethylamino)-ethanesulfonate...

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Abstract

A composition for foam formation, which contains: (A) the first self-emulsifying water-based polyurethane resin having at least one hydrophilic functional group selected from sulfo groups and sulfonate groups, (B) having selected The second self-emulsifying water-based polyurethane resin composed of at least one hydrophilic functional group in carboxyl group and carboxylate group, (C) crosslinking agent, (D) foaming agent, (E) thickener and (F) water.

Description

technical field [0001] The present invention relates to a composition for forming a foam, a foam, a method for producing the foam, and a leather material. Background technique [0002] Conventionally, as a substitute for natural leather, artificial leather consisting of polyurethane resin and a fibrous base made of nonwoven fabric, and synthetic leather consisting of polyurethane resin and a fibrous base made of woven or braided fabric have been manufactured . Such imitation leather products such as artificial leather and synthetic leather are produced, for example, by a method called a wet coagulation method in which an organic solvent of a polyurethane resin is given to a fiber base material by impregnation or coating. solution, and the resulting product is passed through a coagulation solution (usually water) to coagulate it, and then washed with water and dried, wherein the coagulation solution is a poor solvent (poor solvent) with respect to the polyurethane resin, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08J9/30D06N3/14D06N3/00
CPCC08J9/30C08J9/0061D06N3/14D06N3/0043C08J2375/04C08J2475/04Y02P70/62C08J9/04C08L75/04C08G18/76
Inventor 佐佐木香杉谷强志西野正和
Owner NICCA CHEM COMPANY
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