Polyurethane thickening agent with dispersing function as well as preparation method and application thereof

A polyurethane and thickener technology, applied in dyeing, textiles, papermaking, coating, etc., to achieve good matching and compatibility, dense three-dimensional network structure, and reduce the effect of small molecular hydrophilic substances

Active Publication Date: 2021-12-21
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a new type of polyurethane thickener with dispersing function and its preparation method in view of the existing problems of thickener materials

Method used

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  • Polyurethane thickening agent with dispersing function as well as preparation method and application thereof
  • Polyurethane thickening agent with dispersing function as well as preparation method and application thereof
  • Polyurethane thickening agent with dispersing function as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Prepare polyurethane thickener C1 with dispersing function, its synthetic formula is composed as follows:

[0076] Table 1

[0077]

[0078] The steps of the polyurethane thickener with dispersion function synthesized by this formula are as follows:

[0079] 1) Under a nitrogen atmosphere, add 53.4g of butyl acetate into a 500ml flask, start stirring and heat up to 90°C, weigh 20g of butyl acetate, 1.8g of polyethylene glycol acrylic acid-11, and 11.78g of Acrylic acid, 35.35g styrene, 0.098g BPO and 0.15g dodecyl mercaptan were mixed evenly, and the liquid in the dropping bottle was added dropwise to the flask for polymerization reaction in 2 hours. Reaction obtains polyacrylate polymer (tested by GPC, its mass-average molecular weight is 14677) and its GPC spectrogram of polyacrylate polymer is as follows figure 1 as shown.;

[0080] 2) Add 100g of polyethylene glycol 6000 (PEG6000) into a 500ml three-neck flask equipped with electromagnetic stirring and nitrog...

Embodiment 2

[0088] Prepare polyurethane thickener C2 with dispersing function, its synthetic formula is composed as follows:

[0089] Table 2

[0090]

[0091] The synthesis steps of Example 2 are the same as those of Example 1, and will not be repeated here. The obtained polyacrylate polymer passed the GPC test, and its mass-average molecular weight was 17762. According to this formula, the polyurethane thickener C2 with dispersing function was obtained.

[0092]

[0093] Wherein, n=4, m=1, y=1, z=2.

Embodiment 3

[0095] Prepare polyurethane thickener C3 with dispersing function, and its synthetic formula is composed as follows:

[0096] table 3

[0097]

[0098]

[0099] The synthesis steps of Example 3 are the same as those of Example 1, and will not be repeated here. The obtained polyacrylate polymer passed the GPC test, and its mass-average molecular weight was 15478. According to this formula, the polyurethane thickener C3 with dispersing function was obtained.

[0100]

[0101] Wherein, n=2, m=2, y=3, z=1.

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Abstract

The invention discloses a polyurethane type thickening agent with a dispersing function and a preparation method thereof, a polymer main chain of the thickening agent simultaneously contains a polyurethane structure and an acrylate structure, and the main chain also contains one or more monofunctional hydrophobic end-capping structures. A synthesized polyacrylate polymer and a synthesized isocyanate group-terminated macromolecular chain segment polymer are used, a polyhydroxy compound is added, and a polymerization reaction is performed. The thickening agent shows higher system matching property and compatibility, meanwhile, the thickening efficiency is relatively high, and the use of a dispersing agent can be reduced.

Description

technical field [0001] The invention relates to the field of polymer material preparation, in particular to a polyurethane thickener with dispersing function and its preparation method and application. 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 leveling and film formation. In different processes, the requirements for the viscosity of the coating system are also different. For example, during the storage of the coating, it is necessary to maintain a high low-shear viscosity for a long time to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/62C08G18/32C09D7/43D06P1/52
CPCC08G18/6674C08G18/4063C08G18/48C08G18/625C08G18/3206C09D7/43D06P1/5285
Inventor 冯聪聪纪学顺
Owner WANHUA CHEM GRP CO LTD
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