Urethane resin composition, surface treatment agent, and article

A urethane, resin composition technology, applied in fiber treatment, polyurea/polyurethane coatings, textiles and papermaking, etc., can solve the problems of poor ethanol resistance, insufficient ethanol resistance, poor chemical resistance, etc. Excellent effect of ethanol resistance

Active Publication Date: 2021-08-10
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has excellent adhesion to the substrate and excellent abrasion resistance, but insufficient ethanol resistance
[0004] From this, it has been pointed out that if the surface treatment agent is made water-based, it will be inferior in chemical resistance, especially in ethanol resistance, compared with conventional solvent-based resin compositions.

Method used

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  • Urethane resin composition, surface treatment agent, and article
  • Urethane resin composition, surface treatment agent, and article
  • Urethane resin composition, surface treatment agent, and article

Examples

Experimental program
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Effect test

Embodiment

[0077] Hereinafter, the present invention will be described in more detail using examples.

Synthetic example 1

[0078] [Synthesis Example 1] Preparation of Urethane Resin (A-1) Aqueous Dispersion

[0079] Add 250 parts by mass of methyl ethyl ketone and 0.001 part by mass of stannous octoate in a four-necked flask equipped with a stirrer, a thermometer and a nitrogen reflux tube, and then add polycarbonate polyol-1 (with 1,4-butanediol and 1,6 - Hexylene glycol as raw material, number average molecular weight: 1000) 200 parts by mass, 15 parts by mass of 2,2-dimethylolpropionic acid, 49 parts by mass of isophorone diisocyanate, 34 parts by mass of hexamethylene diisocyanate , reacted at 70° C. for 1 hour to obtain a methyl ethyl ketone solution of the urethane prepolymer.

[0080] Next, after mixing 6.8 parts by mass of hydrazine and 15 parts by mass of triethylamine in the methyl ethyl ketone solution of the urethane prepolymer, 820 parts by mass of ion-exchanged water was added to obtain a urethane resin dispersed in water (A -1) Emulsion.

[0081] Next, methyl ethyl ketone was dist...

Synthetic example 2

[0083] [Synthesis Example 2] Preparation of Urethane Resin (A-2) Aqueous Dispersion

[0084] Add 250 parts by mass of methyl ethyl ketone and 0.001 part by mass of stannous octoate in a four-necked flask equipped with a stirrer, a thermometer and a nitrogen reflux tube, and then add polycarbonate polyol-3 (with 1,6-hexanediol as raw material, Number average molecular weight: 2000) 220 parts by mass, 12 parts by mass of 2,2-dimethylolpropionic acid, 70 parts by mass of dicyclohexylmethane diisocyanate, react at 70°C for 1 hour to obtain a urethane prepolymer solution of methyl ethyl ketone.

[0085] Next, after mixing 4.5 parts by mass of piperazine and 9 parts by mass of triethylamine in the methyl ethyl ketone solution of the urethane prepolymer, 880 parts by mass of ion-exchanged water was added to obtain a urethane resin dispersed in water ( A-2) Emulsion.

[0086] Next, methyl ethyl ketone was distilled off from the said emulsion liquid, and the ion-exchange water was fu...

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Abstract

The present invention provides a urethane resin composition characterized by comprising a urethane resin (A), an olefin resin (B), water (C), and a carbodiimide compound (D) having a carbodiimide equivalent of 340 or higher. The present invention further provides a surface treatment agent characterized by comprising the urethan resin composition. The present invention furthermore provides an article characterized by including a layer formed from the surface treatment agent. The urethane resin (A) has a urethane bond content preferably in the range of 980-4,000 mmol / kg. The urethane resin (A) has a urea bond content preferably in the range of 315-850 mmol / kg.

Description

technical field [0001] The present invention relates to a urethane resin composition, a surface treatment agent, and an article having a layer formed of the surface treatment agent. Background technique [0002] In the production process of the sheet for automotive interior leather, the surface is finished with a surface treatment agent from the viewpoint of imparting chemical resistance and designability. Solvent-based resin compositions containing organic solvents are the main materials used in conventional surface treatment agents. However, due to the increase in environmental restrictions in recent years, development of water-based surface treatment agents substantially free of organic solvents has been progressing. [0003] As the above-mentioned aqueous surface treatment agent, for example, a method of repeatedly applying two types of urethane resin compositions containing water is disclosed (for example, refer to Patent Document 1). In this method, although the adhes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/046C09D5/02C08K5/29C08L23/00C08L75/04C09D123/00C09D175/04C09D7/63
CPCC08L23/00C08J7/04C09D123/00C08K5/29C09D175/06C08G18/242C08G18/10C08G18/12C08G18/0823C08G18/348C08G18/44C08G18/6659C08G18/73C08G18/755C08G18/758C08G18/722C08G18/797C09D5/022C09D7/65C09D5/024D06M15/564D06N3/14C08G18/3246C08G18/3231C09D7/63C08L75/04C09D175/04
Inventor 佐藤盛绪坂井美代中庄谷隆典千千和宏之
Owner DIC CORP
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