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Waterborne polyurethane, preparation method thereof, waterborne polyurethane automotive interior adhesive and preparation method thereof

A water-based polyurethane and automotive interior technology, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of poor water resistance and poor mechanical properties of water-based polyurethane, and achieve improved hydrolysis resistance and improved Effects of mechanical properties and excellent hydrolysis resistance

Inactive Publication Date: 2016-07-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problems of poor water resistance and poor mechanical properties of water-based polyurethane in the prior art, and provides a water-based polyurethane and a preparation method thereof, and a water-based polyurethane automotive interior adhesive and a preparation method thereof

Method used

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  • Waterborne polyurethane, preparation method thereof, waterborne polyurethane automotive interior adhesive and preparation method thereof
  • Waterborne polyurethane, preparation method thereof, waterborne polyurethane automotive interior adhesive and preparation method thereof
  • Waterborne polyurethane, preparation method thereof, waterborne polyurethane automotive interior adhesive and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0057] A kind of preparation method of aqueous polyurethane, comprises the following steps:

[0058] a) Under nitrogen protection, 180-320g poly(carbonate-ether) glycol, 42-130g polycaprolactone polyol and 23-65g polybutylene adipate polyol are at 110°C under reduced pressure After removing water for 2 hours, add 0.03-0.16g of catalyst and 75-196g of diisocyanate to react in 300-850mL of butanone, the reaction temperature is 75-85°C, and the reaction time is 2.5-6h to obtain the first intermediate;

[0059] The catalyst is dibutyltin dilaurate, stannous octoate or organic bismuth DabcoMB20 catalyst, and the diisocyanate is 1,6-hexamethylene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, 4,4-dicyclohexylmethane diisocyanate or 2,4-toluene diisocyanate.

[0060] b) Add 12.4-35.8g of dimethylolpropionic acid, 2.1-4.6g of trimethylolpropane and 110-200mL of butanone to the first intermediate for reaction, the reaction temperature is 80-90°C, and the reaction...

Embodiment 1

[0095] Embodiment 1, aqueous polyurethane resin synthesis

[0096] a) Under nitrogen protection, 180g poly(carbonate-ether) glycol (formula I) (m=10, n=10), 42g polycaprolactone polyol (formula II) ( p=8), 23g polybutylene adipate polyol (formula III) (q=8), 0.03g dibutyltin dilaurate and 75g diphenylmethane diisocyanate in 300mL methyl ethyl ketone, at reaction temperature is 75°C, and the reaction time is 6h to obtain the first intermediate;

[0097] b) Add 12.4g of dimethylolpropionic acid, 2.1g of trimethylolpropane and 110mL of butanone to the first intermediate at a temperature of 80°C and react for 5 hours to obtain the second intermediate;

[0098] c) Add 20 g of neopentyl glycol and 150 mL of butanone to the second intermediate at a temperature of 90° C. and react for 4 hours to obtain the third intermediate;

[0099] d) Add 6.5 g of dimethylethanolamine to the third intermediate at a temperature of 30° C. and react for 1 hour to obtain the fourth intermediate;

[...

Embodiment 2

[0102]Embodiment 2, aqueous polyurethane resin synthesis

[0103] a) Under nitrogen protection, 320g poly(carbonate-ether) glycol (formula I) (m=70, n=70), 130g polycaprolactone polyol (formula II) ( p=50), 65g polybutylene adipate polyol (formula III) (q=50), 0.16g stannous octoate and 196g of 4,4-dicyclohexylmethane diisocyanate in 850mL methyl ethyl ketone, The temperature is 85°C, the reaction time is 2.5h, and the first intermediate is obtained;

[0104] b) Add 35.8g of dimethylolpropionic acid, 4.6g of trimethylolpropane and 200mL of butanone to the first intermediate at a temperature of 90°C and react for 2 hours to obtain the second intermediate;

[0105] c) Add 36 g of neopentyl glycol and 220 mL of butanone to the second intermediate at a temperature of 100° C. and react for 2 hours to obtain the third intermediate;

[0106] d) Add 12.7 g of dimethylethanolamine to the third intermediate at a temperature of 45° C. and react for 0.5 h to obtain the fourth intermedia...

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Abstract

The invention relates to waterborne polyurethane, a preparation method thereof, a waterborne polyurethane automotive interior adhesive and a preparation method thereof, and belongs to the field of waterborne adhesives. The technical problem that existing waterborne polyurethane is poor in water resistence and poor in mechanical property is solved. The waterborne polyurethane comprises polycaprolactone polyol and poly ethylene succinate polyol besides poly(carbonic ester-ether)polyol. The invention further provides a waterborne polyurethane automotive interior adhesive which is prepared from waterborne polyurethane, a waterborne thickening agent, a waterborne defoaming agent, a waterborne dispersing agent, AMP-95, talcum powder, titanium dioxide, fumed silica and a water waterborne curing agent. The invention further provides a preparation method of the waterborne polyurethane automotive interior adhesive. The release force of a glue film of the prepared waterborne polyurethane automotive interior adhesive is 368 N / cm-405 N / cm, and the release force is 327 N / cm-385 N / cm after one cycle; after four cycles of high-low temperature impact and damp and hot weather resistance tests are carried out, the glue film is not warped or unglued, and the release force is 290 N / cm-348 N / cm.

Description

technical field [0001] The invention relates to the field of water-based adhesives, in particular to a water-based polyurethane and a preparation method thereof, and a water-based polyurethane automotive interior adhesive and a preparation method thereof. Background technique [0002] The problem of serious air quality pollution inside passenger cars has always been an urgent and urgent problem to be solved in the automotive field. For this reason, the Ministry of Environmental Protection of my country and the General (GB / T27630-2011)” stipulates the concentration of eight organic substances in the air in the car, such as benzene, toluene, xylene, ethylbenzene, formaldehyde, and acetaldehyde, and requires that the content of organic substances not exceed 1.50ppm. The most effective method is to replace the solvent-based adhesives currently used in automotive interiors with water-based adhesives for automotive interiors. Moreover, since October 1, 2015, Beijing will start to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/42C08G18/44C08G18/48C08G18/32C08G18/34C08G18/38C08G18/66C09J175/06C09J175/08C09J11/04C09J11/06
CPCC08G18/12C08G18/4018C08G18/4238C08G18/4277C08G18/44C08G18/4825C08G18/6607C08G18/6611C08G18/6622C08G18/6625C08G18/6629C08G18/664C08G18/6644C08G18/6655C08G18/6659C08G18/6662C08K3/22C08K3/34C08K3/36C08K5/17C08K13/02C09J11/04C09J11/06C09J175/06C09J175/08
Inventor 张红明李颖乔立军王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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