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Water-based urethane resin composition and synthetic leather

A technology of polyurethane resin and resin composition, which is applied in furniture parts, interior decoration, textiles and paper making, etc. It can solve the problems of insufficient wear resistance and hydrolysis resistance, and achieve excellent wear resistance and hydrolysis resistance.

Pending Publication Date: 2018-01-02
DIC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

), but in the current water-based polyurethane resin, the abrasion resistance and hydrolysis resistance are not sufficient

Method used

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  • Water-based urethane resin composition and synthetic leather
  • Water-based urethane resin composition and synthetic leather
  • Water-based urethane resin composition and synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] [Example 1] Preparation of aqueous polyurethane resin composition (X-1)

[0136] In a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer, and a nitrogen gas introduction pipe, a polycarbonate diol ("ETERNACOLL UH-200" manufactured by Ube Kosan Co., Ltd., number average molecular weight: 2,000, hereinafter referred to as abbreviation) was added under a nitrogen gas stream. "PC-1".) 500 parts by mass, both-end diol type reactive silicone ("Silaplane FM-4425" manufactured by JNC Co., Ltd. number average molecular weight: 10,000, hereinafter abbreviated as "two-end diol type Si-1" ".) 125 parts by mass, dimethylolpropionic acid (hereinafter abbreviated as "DMPA".) 25 parts by mass, methyl ethyl ketone 360 ​​parts by mass, after uniform mixing, add dicyclohexylmethane diisocyanate (hereinafter abbreviated as "H" 12MDI ".") 177 parts by mass, then, add 0.1 parts by mass of dibutyltin dilaurate, and react at 70°C for about 4 hours, thereby obtaining a...

Embodiment 2

[0137] [embodiment 2] the preparation of aqueous polyurethane resin composition (X-2)

[0138] In a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer, and a nitrogen reflux tube, under nitrogen flow, polycarbonate diol ("DURANOL T5652" manufactured by Asahi Kasei Chemical Co., Ltd., number average molecular weight: 2,000, hereinafter referred to as "PC-2".) 500 parts by mass, single-ended diol-type reactive silicone ("X-22-176GX-A" manufactured by Shin-Etsu Chemical Co., Ltd., number average molecular weight: 14,000, hereinafter referred to as "single-ended diol Alcohol type Si-1".) 26 parts by mass, 8 parts by mass of DMPA, 269 parts by mass of methyl ethyl ketone, after mixing uniformly, add 86 parts by mass of isophorone diisocyanate (hereinafter referred to as "IPDI") 0.1 parts by mass of dibutyltin laurate was reacted at 70° C. for about 4 hours to obtain a methyl ethyl ketone solution of a urethane prepolymer having an isocyanate group at a mol...

Embodiment 3

[0139] [embodiment 3] the preparation of aqueous polyurethane resin composition (X-3)

[0140] In a four-necked flask equipped with a stirrer, a reflux condenser, a thermometer, and a nitrogen reflux tube, polycarbonate diol (manufactured by Asahi Kasei Chemical Co., Ltd. "DURANOL T4692, number average molecular weight: 2,000, hereinafter referred to as " PC-3".) 500 parts by mass, single-end diol type reactive silicone ("Silaplane FM-DA21" manufactured by JNC Co., Ltd., number average molecular weight: 5,000, hereinafter referred to as "single-end diol type Si-2" .) 88 mass parts, DMPA26 mass parts, methyl ethyl ketone 332 mass parts, after mixing uniformly, add H 12 145 parts by mass of MDI, and then 0.1 part by mass of dibutyltin dilaurate was added and reacted at 70° C. for about 4 hours to obtain a methyl ethyl ketone solution of a urethane prepolymer having an isocyanate group at a molecular terminal. Next, 20 parts by mass of triethylamine was added to the methyl ethyl...

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Abstract

The present invention provides a water-based urethane resin composition characterized by comprising: a urethane resin (A) which is a reaction product obtained from starting materials indispensably comprising a polyol (a1), a reactive silicone (a2) having a number-average molecular weight of 4,000 or higher and having a functional group that reacts with an isocyanate group, and a polyisocyanate (a3); and an aqueous medium (B). The present invention further provides a synthetic leather characterized by including a skin layer and / or surface treatment layer formed from the water-based urethane resin composition. The problem to be solved by the invention is to provide a water-based urethane resin composition excellent in terms of wear resistance and hydrolytic resistance. The water-based urethane resin composition of the present invention is suitable for use as the skin layers or surface treatment layers of synthetic leathers.

Description

technical field [0001] The present invention relates to an aqueous polyurethane resin composition excellent in abrasion resistance and hydrolysis resistance. Background technique [0002] Polyurethane resins for synthetic leather are widely used solvent-based polyurethane resins centered on N,N-dimethylformamide (DMF). DeDMFylated. [0003] Along with this DMF removal, replacement studies for environmentally compatible water-based polyurethane resins have been conducted (for example, refer to Patent Document 1.), however, the current water-based polyurethane resins are not yet sufficient in terms of abrasion resistance and hydrolysis resistance. [0004] prior art literature [0005] Patent Literature [0006] Patent Document 1: Japanese Patent Laid-Open No. 2007-119749 SUMMARY OF THE INVENTION [0007] The problem to be solved by the invention [0008] The subject to be solved by the present invention is to provide an aqueous polyurethane resin composition excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/00C08G18/08C08G18/40C08G18/61D06N3/14
CPCC08G18/61D06N2211/106D06N2209/143D06N2211/14D06N3/0065D06N3/0095D06N3/128D06N3/145D06N2209/105C08G18/0823C08G18/12C08G18/3228C08G18/348C08G18/44C08G18/4854C08G18/6659C08G18/6692C08G18/73C08G18/755C08G18/758C08G18/246C08G18/4018C08G18/289C08G18/3246C08G18/3234C08G18/0866D06N3/0056D06N3/14C08G18/40
Inventor 前田亮
Owner DIC CORPORATION
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