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High solid content PVC glove powder-free aqueous coating and its preparation method and use method

A high-solid content, water-based coating technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as allergies, powder staining, and low active ingredients, and reduce unit consumption and transportation costs. Large multiples, easy to dissolve and fall off

Active Publication Date: 2017-01-11
北京戍光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are mainly two processing methods in current production. One is to use cross-linked starch to produce powdered gloves. The gloves are very smooth to wear. The disadvantage is that it is easy to get powder on the hands, prone to allergies, and the production line has been used for a long time. It will breed bacteria and produce odor; one is to use powder-free PVC coating agent for finishing, the mainstream market is to use water-based polyurethane coating, most of the solid content ranges between 12-35%, for example, the solid content of Japanese products is 30% -33%, it can be diluted 30-35 times when used; the solid content of products from Taiwan, China Beijing Youmeite, Shanghai Zhengfeng, Anhui Lingda and other companies are all lower than 35%, and the moisture content accounts for more than 60%. Which product has lower active ingredients

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0027] Prepare 200 grams of redispersible polyurethane resin:

[0028] 1) Preparation of waterborne polyurethane resin prepolymer

[0029] First weigh 100 grams of polyadipate 1,4-butylene glycol ester polyol (2 functionality, molecular weight 1000), 32 grams of polypropylene glycol polyether (2 functionality, molecular weight 2000), sulfonate Modified polyester polyol BY-3305 6.5g, acetone 7g, vacuumize at 100-110°C to remove water; then cool down to below 50°C, add 47.95g of dicyclohexylmethane diisocyanate (HMDI), 10.09g of HDI , butanone 8 grams, heated to 90 ° C for 1-2 hours. Then lower the temperature to below 55°C, add 4.6 grams of dimethylolbutyric acid (DMBA), 0.6 grams of trimethylolpropane, 0.8 grams of neopentyl glycol, and 10 grams of acetone into the reactor, and heat up to 90°C for 6 hours , lower the temperature to below 30°C, add 20 grams of acetone to reduce the viscosity,

[0030] 2) neutralize

[0031] Add 3.3 grams of dimethylethanolamine diluted with...

Embodiment 3

[0039] Prepare 200 grams of redispersible polyurethane resin:

[0040] 1) Preparation of waterborne polyurethane resin prepolymer

[0041] First weigh 120 grams of polyadipate 1,4-butylene glycol ester polyol (2 functionality, molecular weight 1000), 7 grams of sulfonate modified polyester polyol BY-3305, and 7 grams of acetone , 100-110 ° C vacuum to remove water; then lower the temperature to below 50 ° C, add dicyclohexylmethane diisocyanate (HMDI) 26.2 grams, isophorone diisocyanate (IPDI) 24.4 grams, HDI 10.9 grams, butanone 8 grams, heated to 90 ° C for 1-2 hours. Then lower the temperature to below 55°C, add 2.5 grams of dimethylol propionic acid (DMPA), 2.5 grams of dimethylol butyric acid (DMBA), 0.6 grams of trimethylolpropane, and 0.8 grams of neopentyl glycol in the reactor , 10 grams of acetone, heated up to 90 ° C for 6 hours, cooled to below 30 ° C, added 20 grams of acetone to reduce the viscosity,

[0042] 2) neutralize

[0043] Add 2.4 grams of triethylam...

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PUM

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Abstract

The invention discloses a high solid content PVC glove powder-free aqueous coating. The high solid content PVC glove powder-free aqueous coating comprises 30-40wt% of a delustering agent, 15-25wt% of a wetting levelling agent, 15-25wt% of water-soluble resin, 20-30wt% of redispersible polyurethane resin, 0.2-0.5wt% of a solid thickening agent and 1.5-10wt% of water. The preparation method comprises uniformly dispersing and mixing a wetting levelling agent and an inorganic delustering agent, mixing the mixture and an organic delustering agent, carrying out uniform mixing, uniformly mixing the mixture, redispersible polyurethane resin, water-soluble resin and a solid thickening agent and packaging and storing the mixture. The invention discloses the use method of the high solid content PVC glove powder-free aqueous coating. The high solid content PVC glove powder-free aqueous coating solves the prior art problems, has high solid content, large dilution multiple and a low transport cost and can be simply fed.

Description

technical field [0001] The invention relates to the technical field of PVC gloves processing, in particular to a powder-free water-based coating for PVC gloves with a high solid content and a preparation and use method thereof. Background technique [0002] PVC gloves occupy an important position in the market because they are cheaper than nitrile gloves, latex gloves, and polyurethane gloves, and have good protective performance. Since PVC gloves contain a large amount of plasticizers, the gloves are easy to stick back during storage and transportation, which affects the performance of wearing and using. In order to solve this problem, during the production process of gloves, there will be a dip coating process, and a coating is applied to the inside of the glove to play the role of easy release, anti-adhesion, and improved wearability. There are mainly two processing methods in current production. One is to use cross-linked starch to produce powdered gloves. The gloves ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D129/04C09D133/26C09D7/12C08G18/66C08G18/48C08G18/42C08G18/12
Inventor 李文元林金河林洪凯
Owner 北京戍光科技有限公司
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