Polyurethane polymer suitable for viscosity adjustment of waterborne high solvent system and composition containing same

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

Active Publication Date: 2019-07-02
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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  • Polyurethane polymer suitable for viscosity adjustment of waterborne high solvent system and composition containing same
  • Polyurethane polymer suitable for viscosity adjustment of waterborne high solvent system and composition containing same
  • Polyurethane polymer suitable for viscosity adjustment of waterborne high solvent system and composition containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0067] Table 1

[0068] raw material Mass / g PEG6000 100 Ethylene glycol bis(5-hydroxy-laurate) 3.56 BICAT8018 0.05 HMDI 13.5 stearyl alcohol 4.55 Diethylene glycol monobutyl ether 81.1 water 202.8

[0069] Its steps of the viscosity adjusting composition that adopts this prescription synthesis are as follows:

[0070] 1) Add 100g of polyethylene glycol 6000 (PEG6000) into a 500ml three-necked flask equipped with electromagnetic stirring and nitrogen inlet, and remove water at 110°C for 2 hours under negative pressure (pressure less than 100Pa);

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

[0072] 3) Under nitro...

Embodiment 2

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

[0076] Table 2

[0077] raw material Mass / g PEG6000 100 Ethylene glycol bis(5-hydroxy-laurate) 3.56 BICAT8018 0.05 HDI 8.4 stearyl alcohol 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 is obtained according to this formula.

Embodiment 3

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

[0081] table 3

[0082] raw material Mass / g PEG6000 100 Ethylene glycol bis(5-hydroxy-laurate) 3.56 BICAT8018 0.05 HMDI 13.5 Hexacyl alcohol 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 invention relates to a polyurethane polymer suitable for the viscosity adjustment of a waterborne high solvent system and a composition containing the same. The polyurethane polymer contains a hydrophobic structure with functional groups that can react with isocyanate bonds and one or more hydrophobic end-capping structures with single functionality on the main chains of the polymer. The hydrophobic structure with the functional groups that can react with isocyanate bonds contains 4-70 carbon atoms besides the connecting group carbon atoms, and each hydrophobic end-capping structure with single functionality contains 8-30 carbon atoms besides the connecting group carbon atoms. The hydrophobic structure with the functional groups that can react with isocyanate bonds is introduced into the main chains of the polyurethane polymer, The hydrophobic structure can form a cage-like structure on the main chains of the polyurethane polymer and can effectively interact with the solvent in thesystem, and thus the influence of the solvent on the thickening of the system is reduced, and the thickening efficiency is especially high in the high solvent system.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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