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Dry-method embossed color-change resin, and preparation method and application thereof

An embossing and dry process technology is applied in the field of dry embossing discoloration resin and the preparation field of dry embossing discoloration resin, and can solve the problems of long production line, many process control points, slow production speed and the like of wet process preparation of trademark leather. To achieve the effect of reducing production costs and production energy consumption, broad application prospects, and improving production efficiency

Active Publication Date: 2014-01-22
XUCHUAN CHEM SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production line of trademark leather prepared by wet method is long, there are many process control points, and many online workers are required, resulting in slow production speed, low efficiency and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The synthesis of polyester polyol compounds adopts the following method: mix adipic acid with a molar ratio of 1:1 and 1,4-butanediol, react at 140-200°C for 3-5h, and obtain polyol with a molecular weight of 1500-2500 Polyester polyol compounds.

Embodiment 2

[0030] Dry embossing color-changing resin, made of the following components by weight: 15 parts of polyester polyol compound, 2 parts of ethylene glycol, 1 part of 1,4-butanediol, and 8 parts of diphenylmethane diisocyanate , 20 parts of ultrafine urea with a particle size below 0.1 mm, and 50 parts of dimethylformamide.

[0031] Its preparation method comprises the following steps:

[0032] Mix polyester polyol compound, ethylene glycol and 1,4-butanediol and dilute with dimethylformamide, then add diphenylmethane diisocyanate, mix and react at 70°C; the viscosity in the reaction system reaches 2wcps / 25°C When above, add ultra-fine urea, mix well, cool down, and you get it.

Embodiment 3

[0034] Dry embossing color-changing resin, made of the following components by weight: 25 parts of polyester polyol compound, 1 part of ethylene glycol, 2 parts of 1,4-butanediol, 10 parts of diphenylmethane diisocyanate , 10 parts of ultrafine urea with a particle size below 0.1mm, and 60 parts of dimethylformamide.

[0035] Its preparation method comprises the following steps:

[0036] Mix polyester polyol compound, ethylene glycol and 1,4-butanediol and dilute with dimethylformamide, then add diphenylmethane diisocyanate, mix and react at 80°C; the viscosity in the reaction system reaches 2wcps / 25°C When above, add ultra-fine urea, mix well, cool down, and you get it.

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Abstract

The invention provides a dry-method embossed color-change resin comprising the following components in parts by weight: 15-25 parts of a polyester polyol compound, 1-2 parts of a hydroxyl-containing low-molecular-weight compound, 8-10 parts of diphenyl methane diisocyanate, 10-20 parts of ultrafine urea, and 50-60 parts of dimethyl formamide. The resin has the advantages of simple preparation method and low cost; the ultrafine urea powder is used as raw material and is the same as other raw materials which are all organic matters and have insignificant density difference, and a settlement or stratification precipitation problem does not exist; and the resin is applied in dry-method preparation of a color-change leather, gets rid of a tedious wet-method solidification process, thus greatly reduces production cost and production energy consumption, and simultaneously improves production efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical products and preparation methods thereof, and in particular relates to a dry-process embossing color-changing resin, and also relates to a preparation method and application of the dry-process embossing color-changing resin. Background technique [0002] Trademark leather, also known as pressure change PU, after being subjected to external pressure, the color of its surface will change when it is stressed. Beautify the appearance of the product. It can be used for embossing brand LOGO, text, patterns, etc., mainly used for high-end notebooks, notepads, trademark production, universal manuals, award certificates, business card books, business card cases, check holders, key cases, wallets, passport cases , manager bags, leather gifts, etc. [0003] Existing trademark leather is usually prepared by wet process, usually after wet coating, water solidification, washing, drying and other processes to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/32C08L75/06
CPCC08G18/3829C08G18/4238C08G18/664C08G18/7671D06N3/0059
Inventor 吕华波张大华江平
Owner XUCHUAN CHEM SUZHOU
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