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Wet-process polyurethane resin as well as preparation method and application thereof

A wet-process polyurethane and resin technology is applied in the fields of wet-process polyurethane resin and its preparation, wet-process polyurethane resin for glove protection and its preparation, and can solve the problem that the release property needs to be further improved, the resilience needs to be further improved, the resilience of gloves and the Wear, scratch resistance and other problems

Active Publication Date: 2021-04-27
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The larger the cells, the better the release property of the glove, but the resilience, wear resistance and scratch resistance of the glove will be worse
[0004] CN106750159A discloses a preparation method of polyurethane resin for high wear-resistant labor protection gloves. The invention first reacts polyglycol with a part of diisocyanate to generate a prepolymer terminated by isocyanate group, so that the soft segment and hard segment of the polyurethane resin The segments are arranged in an orderly manner, so as to control the solidification speed and cell size of the resin, and then control the penetration degree of the resin to the glove core, so that the prepared polyurethane resin can achieve high wear resistance and at the same time, the glove will not be difficult to leave the mold. However, its resilience and Mold release still needs to be further improved
The wet-process polyurethane resin for labor protection gloves of the invention has good mold release and wear resistance, but its resilience needs to be further improved
[0006] CN105885664A discloses a method for preparing a high-resilience dipped labor protection glove coating. The preparation process of the invention is simple, and the prepared high-resilience dipped labor protection glove coating has excellent tensile resilience and low VOC content, and is wear-resistant , UV resistance, but its mold release needs to be further improved

Method used

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  • Wet-process polyurethane resin as well as preparation method and application thereof
  • Wet-process polyurethane resin as well as preparation method and application thereof
  • Wet-process polyurethane resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In this embodiment, a wet-process polyurethane resin is provided. The wet-process polyurethane resin includes three components A, B, and C. In terms of weight percentage, the preparation raw materials of the A component include the following components:

[0062]

[0063] In terms of weight percentage, the preparation raw materials of the B component include the following components:

[0064]

[0065] The C component is composed of cellulose acetate butyrate and SAN resin in a weight ratio of 1:2.

[0066] Wherein, the number-average molecular weight of polyethylene oxide diol is 2000g / mol, the number-average molecular weight of polyethylene adipate diol is 4000g / mol, and the number-average molecular weight of polycaprolactone diol is 2000g / mol, The number average molecular weight of phthalic anhydride polyester diol is 2000g / mol; the weight ratio of component A and component B is 1:6; component C accounts for 3% of the total weight of component A and component B. ...

Embodiment 2

[0072] In this embodiment, a wet-process polyurethane resin is provided. The wet-process polyurethane resin includes three components A, B, and C. In terms of weight percentage, the preparation raw materials of the A component include the following components:

[0073]

[0074] In terms of weight percentage, the preparation raw materials of the B component include the following components:

[0075]

[0076]

[0077] The C component is composed of cellulose acetate butyrate and SAN resin in a weight ratio of 1:2.

[0078] Wherein, the number average molecular weight of polyethylene oxide diol is 2000g / mol, the number average molecular weight of polyethylene adipate diol is 4000g / mol, and the number average molecular weight of polycaprolactone diol is 2000g / mol, The number average molecular weight of phthalic anhydride polyester diol is 2000g / mol; the weight ratio of component A and component B is 1:9; component C accounts for 3% of the total weight of component A and c...

Embodiment 3

[0084] In this embodiment, a wet-process polyurethane resin is provided. The wet-process polyurethane resin includes three components A, B, and C. In terms of weight percentage, the preparation raw materials of the A component include the following components:

[0085]

[0086] In terms of weight percentage, the preparation raw materials of the B component include the following components:

[0087]

[0088] The C component is composed of cellulose acetate butyrate and SAN resin in a weight ratio of 1:2.

[0089] Wherein, the number average molecular weight of polyoxyethylene diol is 1000g / mol, the number average molecular weight of polybutylene adipate diol is 2000g / mol, and the number average molecular weight of polycaprolactone diol is 2000g / mol, The number average molecular weight of phthalic anhydride polyester diol is 2000g / mol; the weight ratio of component A and component B is 1:3; component C accounts for 3% of the total weight of component A and component B.

...

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Abstract

The invention provides wet-process polyurethane resin as well as a preparation method and application thereof. The wet-process polyurethane resin comprises a component A, a component B and a component C. The component A is prepared from the following raw materials: polyoxyethylene glycol, resorcinol bis(2-hydroxyethyl) ether, diphenylmethane-4,4'-diisocyanate and N,N-dimethylformamide. The component B is prepared from the following raw materials: adipic acid-series polyester polyol, polycaprolactone glycol, aromatic polyester polyol, a small-molecular chain extender, diphenylmethane-4,4'-diisocyanate and N,N-dimethylformamide. The component C is composed of cellulose acetate butyrate and SAN resin in a weight ratio of 1: 2 to 1: 1. Labor protection gloves made of the wet-process polyurethane resin have the advantages of good demolding performance, good rebound resilience and favorable abrasion resistance and are good in air permeability and wearing comfort.

Description

technical field [0001] The invention belongs to the field of polyurethane resin preparation, and relates to a wet-process polyurethane resin and its preparation method and application, in particular to a wet-process polyurethane resin for labor protection gloves with good resilience and good wear resistance, its preparation method and application. Background technique [0002] At present, the labor protection gloves commonly used in the market mainly include PVC gloves, latex gloves, nitrile gloves, PU (polyurethane) gloves and the like. PU gloves are the lightest and thinnest of all dipped gloves. The PU dipped gloves on the market are mainly made of glove cores made of polyester, nylon or DYNEEMA, etc., and impregnated with polyurethane resin on the glove cores. Although The rubber surface is relatively thin, but its wear resistance is outstanding. PU gloves have the advantages of anti-static, corrosion resistance, anti-slip and wear-resistant, good air permeability, ligh...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08J9/00C08G101/00C08L75/06C08L75/08C08L25/12C08L1/14
CPCC08G18/6607C08G18/4018C08G18/4833C08G18/4202C08G18/3206C08G18/3215C08J9/0061C08G2101/00C08J2375/06C08J2375/08C08J2425/12C08J2401/14
Inventor 钱建中钱洪祥胡大勇钱迪黄凯华陈桂莲
Owner SHANGHAI HUIDE TECH CO LTD
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