US 2001/0036985 A1 · Polyester based coating composition for anti-stain PCM outside panel

Abstract

This invention relates to a polyester based coating composition for anti-stain PCM outside panel and more particularly, to the polyester based coating composition for anti-stain PCM outside panel having the excellent combination of physical properties such as surface compactness, anti-contamination effect, acid resistance and self-cleaning effect, wherein the polyester based coating composition comprises: a) hydroxy unsaturated polyester resin and a melamine curing agent as main ingredients, b) sulfonic acid blocked with a secondary amine or epoxy resin, c) sulfonic acid blocked with a tertiary amine, d) an isocyanate compound blocked with malonate, e) a tin based curing catalyst, f) polyalkyl silicate, and g) an alkoxy compound; further, the polyester based coating composition for anti-stain PCM outside panel can demonstrate excellent properties of a film of paint such as appearance and workability even without the addition of any defoaming agent and leveling agent by adjusting the compatibility of both hydroxy unsaturated polyester resin and polyalkyl silicate.

Claims7

Dependent claims

A polyester based coating composition for anti-stain PCM outside panel consisting of a hydroxy unsaturated polyester resin, a melamine curing agent, a curing accelerator, a supplemental curing agent, a supplemental curing accelerator, a storage stabilizer and a curing catalyst, wherein said polyester based coating composition futher comprises:

a) 40 to 80 wt. % of the hydroxy unsaturated polyester resin;
b) 5 to 50 wt. % of the melamin curing agent;
c) 0.5 to 3 wt. % of sulfonic acid blocked with a secondary amine or epoxy resin;
d) 0.001 to 3 wt. % of sulfonic acid blocked with a tertiary amine;
e) 1 to 10 wt. % of an isocyanate compound blocked with malonate;
f) 0.1 to 2 wt. % of a tin based curing catalyst;
g) 0.5 to 10 wt. % of polyalkyl silicate expressed by the following formula;
and
h) 1 to 5 wt. % of an alkoxy compound:
2
wherein R1, R2, R3, R4, R5 and R6 are independently lower alkyl groups of C1-5;
and n is an integer of 5 to 80.

9 more elements

Dependencies are inferred from the claim text.

Polyester based coating composition for anti-stain PCM outside panel

Life of this patent

Polyester based coating composition for anti-stain PCM outside panel

Life of this patent

Abstract

Claims7