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Amine modified hyper-branched hydroxyl polymer and applications of amine modified hyper-branched hydroxyl polymer in rapid dry 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 that pigment dispersion is not effective enough, weaken the advantages of high functionality of hyperbranched resin, and is not enough to reduce Problems such as hyperbranched hydroxyl polymers

Active Publication Date: 2015-10-28
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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  • Amine modified hyper-branched hydroxyl polymer and applications of amine modified hyper-branched hydroxyl polymer in rapid dry and pigment dispersion system
  • Amine modified hyper-branched hydroxyl polymer and applications of amine modified hyper-branched hydroxyl polymer in rapid dry and pigment dispersion system
  • Amine modified hyper-branched hydroxyl polymer and applications of amine modified hyper-branched hydroxyl polymer in rapid dry and pigment dispersion system

Examples

Experimental program
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Effect test

Synthetic example

[0135]

[0136]

[0137] Synthetic example

Embodiment 1

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

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

[0141] At room temperature and under nitrogen protection conditions, 18 grams of glycidol (GC) was slowly added dropwise to a solution containing 45 grams of isophorone diisocyanate (IPDI), 18 grams of n-butyl acetate and 81 mg of dibutyltin dilaurate (DBTDL). ) in the mixed solution. Continue to stir after the dropwise addition, and at the same time detect NCO% every 10 minutes until it reaches the theoretical value of 8.4%.

[0142] Under the conditions of 80 degrees and nitrogen protection, the above 19.3 g IPDI-GC was slowly added dropwise to 361 g H4001. After the dropwise addition, continue to stir at 80°C for 2 hours until the NCO% is less than 0.1%.

Embodiment 2

[0144] Synthesis of H4001-10% (IPDI-GC), (10% of H4001 hydroxyl group is derivatized 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 dropwise addition, continue to stir at 80°C 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 invention relates to the technical field of macromolecules and coatings, more specifically to an amine-modified hyperbranched hydroxyl polymer and its application in quick-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 narrow relative molecular mass distribution. It has a similar structure to dendritic polymers, but the synthesis method is simple. Generally, it can be synthesized in one step. Polymerization synthesis. Compared with linear macromolecules, hyperbranched polymers have a spherical-like compact structure, a small hydrodynamic radius of gyration, a high degree of branching, and less molecular chain entanglement, so they have lower viscosity than the former at the same molecular weight. And it changes little with the increase of relative molecular mass. More ...

Claims

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Application Information

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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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