Comb polyurethane associated thickener and preparation method and application thereof

A technology of associative thickener and polyurethane, which is applied in application, adhesive additives, preparations for toiletry, etc. It can solve the problems of system viscosity increase and other problems, and achieve the effect of increasing viscosity, low construction viscosity and improving quality
CN101633718AInactive Publication Date: 2010-01-27GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
Publication Date
2010-01-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a comb polyurethane associated thickener and a preparation method and an application thereof and the preparation method comprises the following steps: adopting primary amine and diglycidyl ether to react, obtaining hydrophobic diol; then adopting polyether diol, catalyst, diisocyanate, hydrophobic diol and alkanol to react, using precipitate for precipitation after finishing the reaction, drying the precipitation and obtaining the comb polyurethane associated thickener. More than two hydrophobic groups (long chain alkyl) in the molecules of the comb polyurethane associated thickener so that the consistency of the emulsion paint can be greatly improved, the emulsion paint has not only high viscosity under low shear but also low applicable viscosity under high shear, and the quality of the emulsion paint is increased. The polyurethane associated thickener is applicable to thickening the water-containing system and can be used in emulsion paint, varnish, adhesive, leather, papermaking, dyeing and printing, ink, cosmetics and the like.
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Description

technical field

[0001] The invention relates to a thickener, in particular to a comb-like polyurethane associative thickener and its preparation method and application. Background technique

[0002] With the enhancement of people's awareness of environmental protection, water-based coatings have become one of the main development directions of the coatings industry due to their advantages of reducing environmental pollution, improving operating conditions and construction environment, and saving a large amount of organic solvents. Latex paint is an important representative variety of water-based paint. Latex paint includes four processes including manufacturing, storage, construction and leveling from preparation to film formation. In different processes, the requirements for the viscosity of the coating system are also different. For example, during the storage of latex paint, it is necessary to maintain a high low-shear viscosity for a long time to prevent the dispersed p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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