Production method for liner gloves aqueous polyurethane coating connection material

A technology of water-based polyurethane and production method, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem that the performance superiority is not very good

Inactive Publication Date: 2008-12-24
ANHUI UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the various latex polymers of existing protective gloves, the shortcoming of respective gloves is all very big, and performance superiority is not very good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0089] Under the protection of dry nitrogen, 200 parts of polyoxypropylene diol (N-220) after vacuum dehydration, 200 parts of polyoxypropylene triol (N-330), and 130 parts of toluene diisocyanate (TDI) were metered into the three-necked flask After mixing evenly, raise the temperature to about 85°C for 1 hour, then add 20 parts of anionic hydrophilic chain extender DMPA, and add a few drops of tertiary amine catalysts to react for 1 hour at about 85°C, and finally add 36 parts of chain extender DEG, containing 20 parts of fluorodihydric alcohol and an appropriate amount of acetone are reacted at 60°C until the NCO content does not change, and the temperature is lowered to 45°C to discharge. The prepolymer was neutralized with 20 parts of triethylamine, and then water was added for high-speed emulsification to obtain WPU emulsion, and the solvent was removed by vacuum distillation to obtain the product.

example 2

[0091] Under the protection of dry nitrogen, 200 parts of polyoxypropylene glycol (N-220) after vacuum dehydration, 200 parts of polyoxypropylene glycol (N-240), 200 parts of polyethylene glycol (PPG-1000), toluene Add 240 parts of diisocyanate (TDI) into the three-necked flask according to the metering, mix well, heat up to about 85°C and react for 1 hour, then add 30 parts of anionic hydrophilic chain extender DMPA, and add a few drops of tertiary amine catalysts at about 85°C React for 1 hour, and finally add 64 parts of chain extender DEG, 20 parts of silicon-containing diol and appropriate amount of acetone at 60°C until the NCO content does not change, then cool down to 45°C and discharge. The prepolymer was neutralized with 2 parts of triethylamine, and then water was added for high-speed emulsification to obtain WPU emulsion, and the solvent was removed by distillation under reduced pressure to obtain the product.

example 3

[0093] Under the protection of dry nitrogen, 200 parts of polyoxypropylene glycol (N-220) after vacuum dehydration, 400 parts of polyoxypropylene glycol (N-240), 300 parts of polyethylene glycol (PPG-1000), six Add 170 parts of methine diisocyanate (HDI) and 220 parts of isophorone isocyanate (IPDI) into the three-necked flask by metering, mix well, heat up to about 85°C and react for 1 hour, then add 47 parts of anionic hydrophilic chain extender DMPA , and add a few drops of catalyst to react at about 85°C for 1 hour, and finally add 15 parts of chain extender DEG, 8 parts of crosslinking agent TMP, 10 parts of silicon-containing diol, 10 parts of fluorine-containing diol and appropriate amount of acetone to react at 60°C to The NCO content does not change anymore, and the temperature is lowered to 40°C to discharge. Neutralize the prepolymer with 2.5 parts of triethylamine, add water for high-speed emulsification, add 60 parts of isophorone diamine dropwise to obtain WPU em...

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Abstract

The invention discloses a production method for insert gloves water-based polyurethane coating bonding materials. The method comprises the following steps of: under the protection of dry nitrogen, adding polyether glycols (including polyether diatomic alcohol and / or polyether triatomic alcohol) having undergone vacuum dewatering and isocyanate into a reaction vessel; heating the mixture up to between 80 and 100 DEG C for reaction after even mixing; then adding a hydrophilic chain extender such as dihydromethyl propionic acid (DMPA) and a catalyst for reaction at a temperature of between 80 and 100 DEG C; finally adding the chain extender and a solvent into the mixture for reaction at a temperature of between 55 and 65 DEG C until the NCO content of the isocyanate group does not change; discharging the reactant after temperature reduction to obtain an ionomer; neutralizing a preformed polymer with triethylamine or diethanolamine or triethanolamine and then adding water the mixed solution for emulsification to obtain water-based polyurethane latex; and carrying out reduced pressure distillation to remove the solvent and obtain the product. The synthesized water-based polyurethane resin which serves as a gloves coating has the advantages of good air and moisture permeability, excellent mechanical performance, solvent resistance, ageing resistance, resistance to corrosion caused by chemical mediators, oil resistance, resistance to hooking, cutting and piercing, excellent abrasion resistance, odorlessness, innocuous and nondestructive for contacting with skin, etc.

Description

technical field [0001] The invention belongs to the preparation of a polymer material, in particular to a production method of a water-based polyurethane coating binder for lining gloves. Background technique [0002] From the perspective of production safety, hands, especially fingers, are the parts with the highest injury rate. According to statistics from relevant international organizations, hand injuries account for about 25% of all types of work-related accidents if the work-related accidents are classified according to the injured parts. China has a huge industrial team, and advanced production equipment and labor methods have not yet been popularized, so there will be more hand injury accidents. In production practice, when working conditions cannot be fundamentally improved for a while, the use of hand protective equipment, especially protective gloves, has become an important auxiliary measure to prevent hand injuries. [0003] Almost all work gloves are made of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/32C08G18/08C08G18/24
Inventor 许戈文熊潜生刘都宝鲍俊杰黎兵
Owner ANHUI UNIVERSITY
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