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发明公开
CN103073711A 一种TGIC耐热粉末涂料用有机硅改性端羧基聚酯树脂及其制备方法 有权

一种TGIC耐热粉末涂料用有机硅改性端羧基聚酯树脂及其制备方法
摘要：
本发明公开了一种耐热粉末涂料用有机硅改性端羧基聚酯树脂，由以下重量含量的组分经熔融缩聚反应得到：有机硅5～25%、多元醇25%～45%、芳香多元酸35～65%、脂肪多元酸0%～5%、酸解剂4%～15%、酯化催化剂0.01～0.15%。本发明还公开了有机硅改性粉末涂料用聚酯树脂的制备方法。本发明制备的聚酯树脂具有合适的玻璃化转变温度、软化点、贮存稳定性，制备的粉末涂料具有优异的耐热性，尤其适合使用于聚酯/TGIC固化体系的粉末涂料。
摘要（英）：

The invention discloses an organosilicon modified carboxyl-terminated polyester resin for a heat-resistant powder coating. The organosilicon modified carboxyl-terminated polyester resin is formed by melt polycondensation reaction of the following components by weight percent: 5-25 percent of organosilicon, 25-45 percent of polyatomic alcohol, 35-65 percent of aromatic polyhydric acid, 0-5 percent of fat polyhydric acid, 4-15 percent of acidolysis agent and 0.01-0.15 percent of esterification catalyst. The invention further discloses a preparation method of the organosilicon modified carboxyl-terminated polyester resin for the heat-resistant powder coating. The polyester resin prepared by adopting the method has proper glass transition temperature, softening point and storage stability, and the powder coating prepared by the organosilicon modified carboxyl-terminated polyester resin has excellent heat resistance and is particularly suitable for polyester/TGIC curing systems.

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