A kind of hyperbranched hydroxyl polymer modified by amines and its application in quick-drying and pigment dispersion system

A technology of hyperbranched hydroxyl and hydroxyl polymer, applied in the direction of pigment slurry, polyester coating, epoxy resin coating, etc., can solve the problem of reducing the functionality of hyperbranched resin, insufficient to reduce hyperbranched hydroxyl polymer, and insufficient pigment dispersion. Effectiveness etc.

Active Publication Date: 2017-08-29
NIPPON PAINT IND COATINGS SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: fatty acid and hydroxyl alone are not enough to form a strong anchoring effect with pigments, it cannot be used as a pigment dispersion resin alone, and it is not effective enough to disperse pigments
However, if this method is too little end capping, it is not enough to reduce the polarity of the hyperbranched hydroxyl polymer and improve its compatibility; if the end capping is too much, this will greatly reduce the functionality of the hyperbranched resin and weaken the The advantage of high functionality of hyperbranched resins, which is not good for the preparation of high hardness, high chemical resistance coatings

Method used

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  • A kind of hyperbranched hydroxyl polymer modified by amines and its application in quick-drying and pigment dispersion system
  • A kind of hyperbranched hydroxyl polymer modified by amines and its application in quick-drying and pigment dispersion system
  • A kind of hyperbranched hydroxyl polymer modified by amines and its application in quick-drying and pigment dispersion system

Examples

Experimental program
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Effect test

Synthetic example

[0135]

[0136]

[0137] Synthesis Example

Embodiment 1

[0139] Synthesis of H4001-5% (IPDI-GC), (5% of H4001 hydroxyl is derived by IPDI-GC)

[0140] Synthesis of isophorone diisocyanate-glycidol adduct (IPDI-GC)

[0141] Under room temperature and nitrogen protection, slowly drop 18 grams of glycidol (GC) into 45 grams of isophorone diisocyanate (IPDI), 18 grams of n-butyl acetate and 81 mg of dibutyl tin dilaurate (DBTDL). ) In the mixed solution. After the addition is complete, continue to stir while checking the NCO% every 10 minutes until it reaches the theoretical value of 8.4%.

[0142] Under the condition of 80 degrees and nitrogen protection, 19.3 grams of IPDI-GC mentioned above was slowly added dropwise to 361 grams of H4001. After the addition is complete, continue stirring at 80 degrees for 2 hours until the NCO% is less than 0.1%.

Embodiment 2

[0144] Synthesis of H4001-10% (IPDI-GC), (10% of H4001 hydroxyl is derived by IPDI-GC)

[0145] Under the conditions of 80 degrees and nitrogen protection, 37.5 grams of IPDI-GC (see Example 1) was slowly added dropwise to 350 grams of Boltorn H4001. After the addition is complete, continue to stir at 80 degrees for 3 hours until the NCO% is less than 0.1%.

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Abstract

The present invention discloses an amine modified hyper-branched hydroxyl polymer, and applications of the amine modified hyper-branched hydroxyl polymer in a coating material rapid drying and pigment dispersion system. According to the present invention, the amine modified hyper-branched hydroxyl polymer resin is introduced into the coating material composition, such that the paint film drying time can be shortened, the cross-linking density of the coating can be improved, and the hardness, the scrub resistance and the chemical corrosion resistance of the paint film can be increased; with the application of the amine modified hyper-branched resin in the pigment paste system, the pigment can be effectively infiltrated and dispersed, and the fineness requirement can be met after grinding for a short time; and with the application of the pigment paste system containing the amine modified hyper-branched resin in the finished product paint, the hardness is high, the thermal storage stability and the room temperature storage stability are good, and the precipitation and the flooding of the finished product paint can be effectively slowed.

Description

Technical field [0001] The present invention relates to the technical field of polymers and coatings, and more specifically to an amine-modified hyperbranched hydroxyl polymer and its application in fast-drying and pigment dispersion systems. Background technique [0002] Hyperbranched polymers are highly branched macromolecules with a three-dimensional branched structure. The molecular structure is relatively regular and has a very narrow relative molecular mass distribution. It has a similar structure to dendrimers, but the synthesis method is simple, and generally one step can be used. Synthesis by polymerization. Compared with linear macromolecules, hyperbranched polymers have a compact structure similar to a spherical shape, a small hydrodynamic radius of gyration, a high degree of branching, and less molecular chain entanglement, so they have a lower viscosity than the former at the same molecular weight. And the change is small with the increase of relative molecular mass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09D187/00C09D161/28C09D17/00C09D133/00C09D167/00C09D167/08C09D163/00C09D161/20
Inventor 李世冰施珠容李海荣袁玮汪少锋
Owner NIPPON PAINT IND COATINGS SHANGHAI
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