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Excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves, and preparation method thereof

A technology of wet-process polyurethane and labor protection gloves, which is applied in the chemical field, can solve the problems of decreased wear resistance of gloves, and achieve the effects of improved wear resistance, low price, and small cells

Active Publication Date: 2018-07-06
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The releasability of gloves is related to the cells generated when the resin solidifies. Generally speaking, the larger the cells, the better the releasability of gloves, but the wear resistance of gloves will decrease. How to improve the releasability of gloves Under the present invention, ensuring the abrasion resistance of the glove resin is a technical difficulty to be solved in the present invention

Method used

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  • Excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves, and preparation method thereof
  • Excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves, and preparation method thereof
  • Excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]

[0028]

[0029] Put 195.19kg of polyethylene oxalate diol (number average molecular weight 2000g / mol) and 133.54kg of N,N-dimethylformamide into the reaction kettle, heat up to 40-50°C, stir well and add 22.69 The reaction temperature of kg diphenylmethane diisocyanate is controlled at 65-85°C, and the reaction time is 1.5-2.5h. After the viscosity of the reaction liquid reaches 220-260Pa·s / 50°C, 220.91kg N,N-dimethylformamide is added 10.27kg of castor oil diol (number-average molecular weight 2000g / mol) and 11.04kg of ethylene glycol and 0.99kg of 2,2-dihydroxypropionic acid are put into after stirring evenly, and 48.10kg of xylene methane is put into 48.10kg of xylene after mixing and reacting for 30-45min For diisocyanate, the reaction temperature is controlled at 65-85°C. During the reaction, the remaining MDI and the remaining N,N-dimethylformamide in the formula are continuously added until the final viscosity is 300-350Pa·s at 25°C. A small amount of mal...

Embodiment 2

[0031]

[0032] Put 174.84kg of polybutylene oxalate diol (number average molecular weight 2000g / mol) and 119.62kg of N,N-dimethylformamide into the reaction kettle, heat up to 40-50°C, stir well and add 20.32 The reaction temperature of kg diphenylmethane diisocyanate is controlled at 65-85°C, and the reaction time is 1.5-2.5h. After the viscosity of the reaction liquid reaches 220-260Pa·s / 50°C, 234.83kg N,N-dimethylformamide is added After stirring evenly, 30.86kg of castor oil diol (number-average molecular weight 1500g / mol) and 10.83kg of ethylene glycol and 0.98kg of 2,2-dihydroxypropionic acid were put into the mixture, and 50.65kg of xylene methane was put into the mixture for 30-45min. For diisocyanate, the reaction temperature is controlled at 65-85°C. During the reaction, the remaining MDI and the remaining N,N-dimethylformamide in the formula are continuously added until the final viscosity is 300-350Pa·s at 25°C. A small amount of malic acid terminates the react...

Embodiment 3

[0034]

[0035] Put 126.61kg of polyethylene oxalate diol (number average molecular weight 2000g / mol) and 86.62kg of N,N-dimethylformamide into the reaction kettle, heat up to 40-50°C, stir well and add 14.72 The reaction temperature of kg diphenylmethane diisocyanate is controlled at 65-85°C, and the reaction time is 1.5-2.5h. After the viscosity of the reaction solution reaches 160-200Pa·s / 50°C, 170.05kg N,N-dimethylformamide is added After stirring evenly, 22.34kg of castor oil diol (number-average molecular weight 2000g / mol) and 11.56kg of butanediol and 0.72kg of 2,2-dihydroxypropionic acid were put into it, and the xylene methane of 36.67kg was put into it after mixing evenly for 30-45min. For diisocyanate, the reaction temperature is controlled at 65-85°C. During the reaction, the remaining MDI and the remaining N,N-dimethylformamide in the formula are continuously added until the final viscosity is 220-280Pa·s at 25°C. A small amount of malic acid terminates the rea...

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PUM

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Abstract

The invention discloses an excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves, and a preparation method thereof. The excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves is prepared from a polyester polyol, a castor oil polyol, an isocyanate, a dihydric alcohol chain extender, a hydrophilic chain extender, a solvent, a demoulding auxiliary agent, and malic acid. The Martindale friction times of the excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin is larger than that of PFT-3046L.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and relates to a wet-process polyurethane resin for labor protection gloves with high mold release and good wear resistance and a preparation method. Background technique [0002] With the rapid development of science and technology, the emergence of new materials, new processes and new technologies has increased the variety of gloves. For example, PU (polyurethane) impregnated protective gloves are currently one of the preferred products in various industries. Polyurethane is the mainstream polymer coating material. , its excellent mechanical protection against abrasion, cuts, tears and punctures complements the high-quality fiber bonding of knitted gloves, and due to the superior toughness of polyurethane, even if the coating is much thinner than other materials, it can also provide the same level of protection. Protective properties, so more and more popular, there is a tendency to replace t...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/67C08G18/66C08G18/42C08G18/32C08G18/34C08L75/14C08L71/02C08K5/101
CPCC08G18/4238C08G18/664C08G18/6659C08G18/67C08G18/7671C08L75/14C08L71/02C08K5/101
Inventor 钱建中钱洪祥陈桂莲黄凯华邹文革胡亮
Owner SHANGHAI HUIDE TECH CO LTD
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