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Waterborne polyurethane resin and low-temperature-resistant waterborne PVC primer

A water-based polyurethane and primer technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of being unable to use at low temperatures, achieve good adhesion, scientific and simple formula, and good low temperature resistance

Active Publication Date: 2021-09-17
广州昊毅新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The melting point of the film is 130~150°C, so it cannot be used at low temperature

Method used

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  • Waterborne polyurethane resin and low-temperature-resistant waterborne PVC primer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A water-based polyurethane resin, in parts by mass, comprising: 20 parts of isophorone diisocyanate, 15 parts of hydroxyl-terminated polybutadiene, 15 parts of acetone, 10 parts of castor oil modified polyester polyol, 8 parts of 1, 4-butanediol, 4 parts of dimethylethanolamine, 5 parts of 2,2-dimethylolpropionic acid, 0.05 parts of organic bismuth, 60 parts of deionized water.

[0029] In this example, the hydroxyl-terminated polybutadiene was purchased from Nippon Soda Co., Ltd., under the brand name JP-200.

[0030] In this example, the castor oil-modified polyester polyol was purchased from Ventruce in the United States under the brand name D2000.

[0031] The preparation method of described aqueous polyurethane resin, comprises the following steps:

[0032] Add hydroxyl-terminated polybutadiene, castor oil modified polyester polyol, and 1,4-butanediol into the reaction kettle, raise the temperature to 130°C, vacuum dehydrate for 2 hours, and cool down to 50°C unde...

Embodiment 2

[0036] A water-based polyurethane resin, in parts by mass, comprising: 15 parts of isophorone diisocyanate, 6 parts of hydroxyl-terminated polybutadiene, 5 parts of acetone, 5 parts of castor oil modified polyester polyol, 3 parts of 1, 4-butanediol, 2 parts of dimethylethanolamine, 0.5 part of 2,2-dimethylolpropionic acid, 0.05 part of organic bismuth, 50 parts of deionized water.

[0037] In this example, the hydroxyl-terminated polybutadiene was purchased from Nippon Soda Co., Ltd., under the brand name JP-100.

[0038] In this example, the castor oil-modified polyester polyol was purchased from Ventruce, USA, under the brand name D1000.

[0039] The preparation method of described aqueous polyurethane resin, comprises the following steps:

[0040] Add hydroxyl-terminated polybutadiene, castor oil-modified polyester polyol, and 1,4-butanediol into the reactor, raise the temperature to 130°C, vacuum dehydrate for 2 hours, and cool down to 50°C under the protection of an ine...

Embodiment 3

[0043] A water-based polyurethane resin, in parts by mass, comprising: 18 parts of isophorone diisocyanate, 12 parts of hydroxyl-terminated polybutadiene, 10 parts of acetone, 8 parts of castor oil modified polyester polyol, 5 parts of 1, 4-butanediol, 2.5 parts of dimethylethanolamine, 3 parts of 2,2-dimethylolpropionic acid, 0.05 part of organic bismuth, 55 parts of deionized water.

[0044] In this example, the hydroxyl-terminated polybutadiene was purchased from Nippon Soda Co., Ltd., under the brand name GI-2000.

[0045] In this example, the castor oil-modified polyester polyol was purchased from Ventruce, USA, under the brand name D1000.

[0046] The preparation method of described aqueous polyurethane resin, comprises the following steps:

[0047] Add hydroxyl-terminated polybutadiene, castor oil-modified polyester polyol, and 1,4-butanediol into the reactor, raise the temperature to 130°C, vacuum dehydrate for 2 hours, and cool down to 50°C under the protection of an...

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Abstract

The invention discloses waterborne polyurethane resin, which is prepared from the following components in parts by mass: 15 to 20 parts of isophorone diisocyanate, 5 to 15 parts of hydroxyl-terminated polybutadiene, 5 to 18 parts of an organic solvent, 5 to 12 parts of castor oil modified polyester polyol, 2 to 8 parts of a hydrophilic chain extender, 2 to 6 parts of a neutralizing agent, 0.4 to 5 parts of a post chain extender, 0.01 to 0.25 part of a catalyst and 50 to 65 parts of deionized water. The resin has good low-temperature resistance and low-temperature and high-moisture resistance. Hydroxyl-terminated polybutadiene has good high adhesion and low temperature resistance, castor oil modified polyester polyol has strong crystallinity and excellent high temperature and high humidity resistance, hydroxyl-terminated polybutadiene and castor oil modified polyester polyol react with isophorone diisocyanate to generate interpenetrating network structure resin, the resin has good low temperature and high humidity resistance after film forming, and the resin has good adhesive force under low-temperature and high-humidity conditions.

Description

technical field [0001] The invention relates to the technical field of PVC primer, in particular to a water-based polyurethane resin and a low-temperature-resistant water-based PVC primer. Background technique [0002] At present, the PVC water-based primers on the market are mainly imported from abroad, and after the existing water-based primers, the winding is easy to stick back, and the peeling force between the bonding layers of the hot melt adhesive at low temperature is very poor, very It is difficult to carry out the delivery of the next process. Insufficient resistance to the migration of plasticizers, resulting in the peeling off of the edge banding strip and the attached substrate. [0003] Patent CN108003300A discloses a modified polyurethane dispersion, which is used to prepare PVC edge strip treatment agent. The modified polyurethane dispersion is prepared by polymerizing its raw materials. The raw materials include: two 10-20% isophorone diisocyanate, 6-15% p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/69C08G18/66C08G18/42C08G18/32C08G18/12C08G18/34C09D175/14C08J7/043C08L27/06
CPCC08G18/755C08G18/698C08G18/4288C08G18/6625C08G18/6607C08G18/3206C08G18/12C09D175/14C08J7/043C08J2327/06C08J2475/14C08G18/348
Inventor 张国华谢洋黄华李晋权
Owner 广州昊毅新材料科技股份有限公司
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