A soft dry-process waterproof, breathable and moisture-permeable polyurethane resin and its preparation method

A polyurethane resin, waterproof and breathable technology, which is applied in the field of soft dry-process waterproof, breathable and moisture-permeable polyurethane resin and its preparation, which can solve the problems of high use cost and achieve the effects of high water pressure resistance, soft hand feeling and excellent peel strength

Active Publication Date: 2016-06-29
江西巨联新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, most of the polyurethane coatings commonly used in the domestic market are developed by foreign companies such as Toray in Japan, 3M in the United States, and Mitsubishi in Japan, and the cost of use is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 8 grams of polyadipate-1,4-butylene glycol ester diol, 4 grams of 4,4-diphenylmethane diisocyanate, 35 grams of DMF, 0.5 grams of penetrant SF-102, and 0.01 grams of butyl sulfide Tin alcohol, 0.06 g of antioxidant BHT, stir evenly, control the temperature at 70 ° C, react for 2 hours, gradually add DMF to dilute and adjust the viscosity to 300,000 cps / 25 ° C during the polymerization process, and then mix the remaining 10 g of polyhexyl Acid-1,4-butanediol ester diol, 3 grams of 4,4-diphenylmethane diisocyanate and 1 gram of mixed chain extender were added to the reactor, reacted at 90°C for 1 hour, and then added DMF to dilute and adjust until the system The viscosity and solid content reach 100,000 cps / 25°C, 30%; add 0.5 g of methanol, 0.05 g of anti-sticking agent CA-630, stir evenly, and finally add 0.5 g of rice starch, cool to below 60°C, and filter.

[0017] The mixed chain extender is a mixture of 0.33g ethylene glycol, 0.33g 2-methyl-1,3-propanediol, 0.17g...

Embodiment 2

[0019] Add 10 grams of polyethylene adipate, 4 grams of toluene diisocyanate, 40 grams of DMF, 0.4 grams of penetrant SF-102, 0.02 grams of butyl tin mercaptide, and 0.08 grams of antioxidant BHT in sequence, stir evenly, and the temperature Control at 75°C, react for 2 hours, gradually add DMF to dilute and adjust the viscosity to 400,000 cps / 25°C during the polymerization process, add the remaining 10 grams of polyethylene adipate, 4 grams of toluene diisocyanate and 1.2 grams of Add the mixed chain extender to the reactor, react at 90°C for 1.5 hours, then add DMF to dilute and adjust until the viscosity and solid content of the system reach 120,000 cps / 25°C, 30%; add 0.6 grams of methanol, 0.04 grams of anti-sticking agent CA- 630, stir evenly, finally add 0.4 g of wheat starch, cool to below 60°C, and filter.

[0020] The mixed chain extender is a mixture of 0.4g ethylene glycol, 0.4g 2-methyl-1,3-propanediol, 0.2g 1,3-butanediol, and 0.2g 1,4-butanediol .

Embodiment 3

[0022] Add 8 grams of poly(trimethylene adipate), 6 grams of isophorone diisocyanate, 45 grams of DMF, 0.5 grams of penetrant SF-102, 0.03 grams of butyltin mercaptide, and 0.07 grams of antioxidant BHT, stir evenly, control the temperature at 80°C, react for 2 hours, gradually add DMF to dilute and adjust the viscosity to 500,000 cps / 25°C during the polymerization process, and then add the remaining 11 grams of poly(1,2-trimethylene adipate) 1. Add 3 grams of isophorone diisocyanate and 1.2 grams of mixed chain extender to the reactor, react at 90°C for 2 hours, then add DMF to dilute and adjust until the viscosity and solid content of the system reach 150,000 cps / 25°C, 30%; Add 0.6 gram of methanol and 0.03 gram of anti-sticking agent CA-630, stir evenly, and finally add 0.3 gram of cornstarch, cool to below 60°C, and filter.

[0023] The mixed chain extender is a mixture of 0.4g ethylene glycol, 0.4g 2-methyl-1,3-propanediol, 0.2g 1,3-butanediol, and 0.2g 1,4-butanediol . ...

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PUM

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Abstract

The invention discloses soft dry-process waterproof air / moisture-permeable polyurethane resin and a preparation method thereof. The soft dry-process waterproof air / moisture-permeable polyurethane resin contains 18-20 parts of polyester polyol, 7-9 parts of diisocyanate, 1-1.2 parts of mixing chain extender, 0.5-0.6 part of terminator, 0.3-0.5 part of penetrant SF-102, 0.01-0.03 part of catalyst, 0.06-0.08 part of antioxidant BHT, 0.3-0.5 part of filler, 0.1-0.2 part of stabilizer UV-329, 0.03-0.05 part of anti-sticking agent CA-630 and 68-75 parts of dimethylformamide DMF. In the invention, by adopting the measures such as adoption of the mixing chain extender, addition of the filler starch and the like, excellent waterproof moisture-permeable performance of the prepared polyurethane resin is guaranteed, the resilience and peel strength are good, the water pressure resistance is high, and the handfeel is soft, full and delicate.

Description

technical field [0001] The invention relates to a soft dry-process waterproof, breathable and moisture-permeable polyurethane resin and a preparation method thereof, belonging to the field of polyurethane preparation. Background technique [0002] With the improvement of people's living standards, more and more attention has been paid to functional clothing fabrics, including waterproof and breathable, breathable heat dissipation, warmth and cold protection, moisture absorption and perspiration, wear resistance and tear resistance, antistatic and radiation protection Antibacterial, anti-odor, anti-mosquito, etc. Among them, waterproof and breathable fabric means that when the fabric is worn, water does not penetrate the fabric under a certain pressure, but the sweat emitted by the human body can be conducted to the outside world through the fabric in the form of water vapor, keeping the wearer dry and comfortable. [0003] People use technologies such as lamination, coating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/32C08G18/08C08J9/26C08L75/06
CPCC08G18/3206C08G18/4238C08G18/664C08G2101/00C08J9/26C08J2201/0422C08J2375/06
Inventor 林泽兵沃长春
Owner 江西巨联新材料有限公司
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