Polyester resin for household appliances and preparation method thereof
A technology of polyester resin and household appliances, applied in polyester coatings, coatings, powder coatings, etc., can solve the problems of prolonged reaction time, decreased catalytic efficiency, etc., and achieves delaying aging process, prolonging service life, excellent and good leveling and mechanical properties
Active Publication Date: 2015-05-06
帝兴树脂(昆山)有限公司
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Abstract
The invention discloses a polyester resin for household appliances, which is prepared by esterification and polycondensation reactions of the following components in percentage by weight: 29-31% of neopentyl glycol, 4-5% of ethylene glycol, 0.1-1% of trimethylolpropane, 52-58% of terephthalic acid, 0.05-1% of esterification catalyst, 5-7% of isophthalic acid, 1-3% of adipic acid, 0.2-1% of antioxidant and 0.01-1% of resin additive, wherein the acid value of the polyester resin is 28.0-32.0mg KOH/g, the viscosity is 30.0-60.0PA.s by measurement at a temperature of 160 DEG C, the color is 0 to 12.0, and the glass transition temperature is 60-62 DEG C. The invention also discloses a method for preparing the polyester resin. The antioxidant is added by moving from the first stage of raw materials to the second stage of raw materials, so that the chemical reaction speed is accelerated, and thus the production efficiency is obviously improved.
Application Domain
Powdery paintsPolyester coatings
Technology Topic
ChemistryAntioxidant +12
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