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Alkyd acrylic graft copolymer paint and preparation method thereof

A graft copolymer, alkyd acrylic technology, applied in polyester coatings, coatings, etc., can solve problems such as material performance deterioration, and achieve good weather resistance, good color retention, and excellent aging resistance.

Inactive Publication Date: 2012-10-24
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the resin has poor compatibility due to differences in molecular weight or functional group structure, although it can be uniformly dispersed under the action of a solvent, during the curing and molding process, as the amount of solvent in the system decreases, different types of resins will show phase separation. material performance deterioration

Method used

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  • Alkyd acrylic graft copolymer paint and preparation method thereof
  • Alkyd acrylic graft copolymer paint and preparation method thereof
  • Alkyd acrylic graft copolymer paint and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0031] The preparation method of alkyd acrylic acid graft copolymer coating, carries out batching by above-mentioned component, and its steps are:

[0032] The preparation steps of alkyd resin are:

[0033] (1) Add soyoleic acid, pentaerythritol, and benzoic acid in sequence according to the formula in the reaction vessel equipped with a stirring device, an oil-water separator, and a thermometer, protect with nitrogen, start stirring and condense water, and heat up to 180°C within 1 hour. When it reaches 120°C, add xylene with a formulation amount of 35%~40%;

[0034] (2) When the temperature reaches 180°C, start to keep warm, keep warm for 40 minutes, and control the temperature at 180-200°C; add 1 / 2 of the formula of phthalic anhydride and maleic anhydride and the remaining xylene, and add the remaining phthalic anhydride and maleic anhydride after 10 minutes; raise the temperature to make the temperature Control at 210-220°C, keep warm for 1h;

[0035] (3) Raise the tempe...

Embodiment 1

[0058] Embodiment 1. The preparation of alkyd resin

[0059] In a 500ml four-necked flask equipped with a stirring device, an oil-water separator and a thermometer, 60g of soyoleic acid, 17.54g of pentaerythritol, and 1.65g of benzoic acid were successively added, protected by nitrogen gas, stirring and condensed water were started, and the temperature was raised to 180°C within 1h (wherein When the temperature reaches 120°C, add 3g of xylene); when the temperature reaches 180°C, start to keep warm, keep the heat for 40 minutes, and control the temperature at 180-200°C; add 8.27g of phthalic anhydride, 0.27g of maleic anhydride and 5.46g of xylene, and add the rest after 10 minutes 8.27g phthalic anhydride and 0.27g maleic anhydride; raise the temperature to control the temperature at 210-220°C, and keep it for 1 hour; continue to raise the temperature to control the temperature at 220-230°C, and start measuring the acid value after holding it for 1 hour; start when the acid va...

Embodiment 2

[0060] Embodiment 2. Preparation of drier

[0061] In 200g of 200# solvent oil, add 11.0g of cobalt isooctanoate, 44.4g of manganese isooctanoate, 44.4g of zirconium isooctanoate, disperse at a high speed of 1500r / mim, and stir for 2 hours to obtain a drier for alkyd acrylic acid graft copolymer.

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Abstract

The invention relates to an alkyd acrylic graft copolymer paint and a preparation method thereof. According to the invention, high-molecular alkyd resin with main chain containing unsaturated double bond is synthesized through molecular design. Alkyd resin is subjected to free radical graft copolymerization with acrylic monomer. Molecular chains of alkyd and acrylic resins are connected through chemical bond, such that the compatibility of the two resins is improved. In a material curing and shaping process, phase separation of the resin is avoided. A solvent, a pigment, a filling material, an antifoaming agent, a dispersing agent, and the alkyd acrylic graft copolymer are grinded and dispersed; a siccative is uniformly dispersed in the mixture, such that the alkyd acrylic graft copolymer paint is obtained. The paint comprises the components of: alkyd acrylic graft copolymer 65%-80%, the pigment 3%-4%, the filling material 6-10%, xylene 10%-20%, the dispersing agent 0.45%-0.7%, the antifoaming agent 0.10%-0.32%, and the siccative 0.9%-3.5%.

Description

technical field [0001] The invention relates to polymer chemistry and polymer coating composition technology. Background technique [0002] The main varieties of high polymers for coatings are: alkyd resin, acrylic resin, phenolic resin, epoxy resin, polyurethane resin, amino resin and their mutual modification. These resins have been widely used in coatings, and have achieved great success in construction, ships, steel structures, wood and automobiles due to their excellent performance. However, in coating systems with a single resin matrix, due to the structure There will always be some inherent defects in the limit, so in practical applications, the matrix resin for coatings is often modified to improve material properties. [0003] Alkyd resin exhibits excellent film-forming properties due to its low relative molecular weight before curing to form a film, which makes the coating film after curing to have a very high gloss, and it can be made into a one-component coating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C08G63/49C08F283/01
Inventor 周应萍杨保平郭军红崔锦峰李延华李军吴纯陈碧碧倾彩霞崔卓魏小赟
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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