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Modified alkyd resin and preparation method thereof and two-component primer

A kind of alkyd resin, modified technology, applied in the direction of polyester paint, coating, etc., can solve the problem that the higher requirements of paint film anti-collapse cannot be met, and achieve product stability, good compatibility, and good solubility Effect

Active Publication Date: 2013-06-19
CARPOLY CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned existing alkyd resins perform well in terms of wettability and transparency, they cannot meet the higher requirements for anti-collapse of the paint film

Method used

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  • Modified alkyd resin and preparation method thereof and two-component primer
  • Modified alkyd resin and preparation method thereof and two-component primer
  • Modified alkyd resin and preparation method thereof and two-component primer

Examples

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preparation example Construction

[0077] The invention provides a kind of preparation method of modified alkyd resin, comprising:

[0078] reacting an alkyd mixture comprising:

[0079] 25 ~ 35 parts by weight of glycidyl tertiary carbonic acid ester;

[0080] 38 ~ 42 parts by weight of glycerin;

[0081] 190 ~ 230 parts by weight of soy oil;

[0082] The ethylene glycol of 25~35 parts by weight;

[0083] 240 ~ 280 parts by weight of phthalic anhydride;

[0084] 30 ~ 38 parts by weight of trimethylolpropane;

[0085] 80~120 parts by weight of pentaerythritol;

[0086] 16 to 40 parts by weight of water-carrying agent;

[0087] The color reducing antioxidant of 1~2 weight part;

[0088] 230 ~ 260 parts by weight of dilute solvent;

[0089] 0.5-1.5 parts by weight of anti-aging agent.

[0090] The present invention reacts the alkyd mixture comprising polyhydric alcohol, organic acid, auxiliary agent and tertiary carbonic acid glycidyl ester as a raw material to generate a modified alkyd resin, and applie...

Embodiment 1

[0131] Nitrogen was passed through the empty reactor for 3 minutes in advance, and the nitrogen flow rate was 5m 3 / h;

[0132] To above-mentioned reactor, drop into successively the glycidyl tertiary carbonic acid ester of 25 parts by weight, the glycerin of 38 parts by weight, the soybean oil of 190 parts by weight, the ethylene glycol of 25 parts by weight, the dimethylbenzene of 16 parts by weight and the color reducing agent of 1 part by weight Antioxidant, and 240 parts by weight of phthalic anhydride, 30 parts by weight of trimethylolpropane and 80 parts by weight of pentaerythritol are sequentially put into the above-mentioned reactor from the special feeding port for powder, and the temperature is raised under stirring, and the temperature is raised to 160 ° C, and the temperature is kept Reflux for 2 hours, then heat up to 220°C within 3 hours, keep warm until the acid value is ≤18mgKOH / g, and the viscosity is 23 seconds to 28 seconds / 25°C Grignard tube, cool down un...

Embodiment 2

[0140] Nitrogen was passed through the empty reactor for 8 minutes in advance, and the nitrogen flow rate was 2m 3 / h;

[0141] To above-mentioned reactor, drop into successively the glycidyl tertiary carbonic acid ester of 35 parts by weight, the glycerin of 42 parts by weight, the soybean oil of 230 parts by weight, the ethylene glycol of 35 parts by weight, the xylene of 40 parts by weight and the color reducing agent of 2 parts by weight Antioxidant, and 280 parts by weight of phthalic anhydride, 38 parts by weight of trimethylolpropane and 120 parts by weight of pentaerythritol are successively put into the above-mentioned reactor from the special feeding port for powder, and the temperature is raised under stirring, and the temperature is raised to 185 ° C, and the temperature is kept Reflux for 1 hour, then heat up to 200°C within 5 hours, keep warm until the acid value is ≤18mgKOH / g, and the viscosity is 23 seconds to 28 seconds / 25°C Grignard tube, then cool down until...

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Abstract

The invention provides modified alkyd resin and a preparation method thereof. According to the method, alkyd compounds react to obtain the modified alkyd resin. The alkyd compounds comprise, by weight, 25-35 parts of tertiary carbonate glycidyl ester, 38-42 parts of glycerol, 190-230 parts of soya oil acid, 25-35 parts of ethanediol, 240-280 parts of phthalic anhydride, 30-38 parts of trimethylolpropane, 80-120 parts of pentaerythritol, 16-40 parts of agents with water, 1-2 parts of subtraction colour antioxidants, 230-260 parts of diluted solvent, and 0.5-1.5 parts of antiager. Conventional raw materials of the soya oil acid, the pentaerythritol and the like are adopted to prepare the alkyd resin, and the tertiary carbonate glycidyl ester is adopted to modify the alkyd resin, so a paint film performances well in the aspects of gloss, definition, collapse resistance and the like. The invention further provides two-component primer.

Description

technical field [0001] The invention relates to the technical field of alkyd resin, in particular to a modified alkyd resin, a preparation method thereof and a two-component primer. Background technique [0002] Alkyd resins are generally a type of oil-modified polyester resins formed by condensation polymerization of polyols, dibasic acids and fatty acids or oils. Due to the good film-forming properties of alkyd resin, the cured film layer has gloss, toughness and strong adhesion, as well as good wear resistance, weather resistance and insulation. It is mainly used in the field of coatings , can be made into varnish, primer and putty etc. Among them, for the alkyd resin in the two-component primer applied to stickers, more consideration is given to the sandability, dryness, gloss and transparency of the film layer after film formation; while for the application of solid wood substrates or stickers For the alkyd resin in the two-component primer for veneer substrates, in a...

Claims

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Application Information

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IPC IPC(8): C08L67/08C08G63/91C09D167/08
Inventor 莘建忠颜荣胜何燚鹏钟永贤罗俊君何艺华
Owner CARPOLY CHEM GRP
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