A kind of polyurethane polymer suitable for viscosity adjustment of aqueous high solvent system and composition containing the same

A polyurethane polymer, hydrophobic technology, applied in the field of polyurethane polymer preparation, can solve the problems of low thickening efficiency, inability to thicken viscosity, large addition amount, etc., and achieve the effect of high thickening efficiency

Active Publication Date: 2022-07-12
WANHUA CHEMICAL (NINGBO) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The polyurethane thickener products described in the above patents can be applied in water-based systems, but the thickening efficiency is low in water-based coatings in high-solvent systems, and a large amount of addition is required to meet the requirements for system viscosity, and some even cannot thicken to desired viscosity

Method used

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  • A kind of polyurethane polymer suitable for viscosity adjustment of aqueous high solvent system and composition containing the same
  • A kind of polyurethane polymer suitable for viscosity adjustment of aqueous high solvent system and composition containing the same
  • A kind of polyurethane polymer suitable for viscosity adjustment of aqueous high solvent system and composition containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A kind of viscosity adjusting composition, its synthetic formula is composed such as table 1:

[0067] Table 1

[0068] raw material mass / g PEG6000 100 Di(5-hydroxy-lauric acid) glycol ester 3.56 BICAT8018 0.05 HMDI 13.5 octadecanol 4.55 Diethylene glycol monobutyl ether 81.1 water 202.8

[0069] The steps of the viscosity-adjusting composition synthesized by this formula are as follows:

[0070] 1) 100g of polyethylene glycol 6000 (PEG6000) was added to a 500ml there-necked flask equipped with electromagnetic stirring and a nitrogen inlet, and the negative pressure (pressure less than 100Pa) was dewatered at 110°C for 2 hours;

[0071] 2) Cool down to 80°C, feed nitrogen into the three-necked flask to relieve pressure, add 3.56g of bis(5-hydroxy-lauric acid) ethylene glycol ester to the three-necked flask, and switch to mechanical stirring until stirring is uniform;

[0072] 3) under nitrogen protection, add 0...

Embodiment 2

[0075] A kind of viscosity adjusting composition, its synthetic formula is composed such as table 2:

[0076] Table 2

[0077] raw material mass / g PEG6000 100 Di(5-hydroxy-lauric acid) glycol ester 3.56 BICAT8018 0.05 HDI 8.4 octadecanol 4.55 Diethylene glycol monobutyl ether 77.7 water 194.3

[0078] The synthesis steps of Example 2 are similar to those of Example 1, and will not be repeated here. The viscosity adjusting composition C2 obtained according to this formula is obtained.

Embodiment 3

[0080] A kind of viscosity adjusting composition, its synthetic formula is composed such as table 3:

[0081] table 3

[0082] raw material mass / g PEG6000 100 Di(5-hydroxy-lauric acid) glycol ester 3.56 BICAT8018 0.05 HMDI 13.5 hexacosanol 6.38 Diethylene glycol monobutyl ether 82.3 water 205.8

[0083] The synthesis steps of Example 3 are similar to those of Example 1, and will not be repeated here. The viscosity-adjusting composition C3 is obtained according to this formula.

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Abstract

The present invention relates to a polyurethane polymer suitable for viscosity adjustment of an aqueous high solvent system and a composition containing the same. The polyurethane polymer comprises, on the polymer backbone, a hydrophobic structure having a functional group reactive with an isocyanate bond, and one or more monofunctional hydrophobic end-capped structures, the hydrophobic structure having a functional group reactive with an isocyanate bond Comprising 4 carbon atoms to 70 carbon atoms excluding the carbon atoms of the linker, the monofunctional hydrophobic end-capped structure comprises 8 carbon atoms to 30 carbon atoms excluding the carbon atoms of the linker. The present invention introduces a hydrophobic structure of functional groups that can react with isocyanate bonds on the main chain of the polyurethane polymer, and the hydrophobic structure can form a "cage-like" structure on the main chain of the polyurethane polymer, which can effectively interact with the solvent in the system. , reduce the influence of solvent on system thickening, especially in high solvent system, it has high thickening efficiency.

Description

technical field [0001] The invention relates to a polyurethane polymer suitable for adjusting the viscosity of an aqueous high-solvent system and a composition containing the same. The composition can effectively increase the viscosity of the product in the aqueous high-solvent system and meet the requirements of the system for rheological properties. The present invention also relates to the preparation method of such a polyurethane polymer and its application. Background technique [0002] With the gradual improvement of people's requirements for environmental protection and the strict requirements of the country for environmental protection, water-based coating systems have been widely used. Water-based coatings have the advantages of reducing environmental pollution, improving operation and construction environment, and saving a lot of organic solvents. [0003] The preparation of water-based coatings to film formation includes four processes: manufacturing, storage, co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/73C08G18/48C08G18/28
CPCC08G18/4833C08G18/758C08G18/2825C08G18/73
Inventor 冯聪聪乔义涛邱方亿孙家宽
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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