Patent ID: 6034178
Filing Date: 2000-03-07
Classification: C09D,Y10S

Abstract:
A coating powder composition for producing a high temperature resistant coating comprising a resin system which comprises (A) between about 50 and about 93 wt % based on total of (A) plus (B) of a silicone resin and (B) between about 7 and about 50 wt % based on total weight of (A) plus (B) of a polyhydroxyl component.said silicone resin (A)having organic substitutents selected from the group consisting of phenyl, methyl, C.sub.2 through C.sub.6 alkyl and mixtures thereof, said silicone resin having a viscosity of between about 500 and about 10,000 cps at 150.degree. C., a condensable hydroxyl content of between about 2 and about 4.5 wt %, and a glass transition temperature (T.sub.g) of about 55.degree. C. or above,said polyhydroxyl component (B) being a polyhydroxyl compound or blends of polyhydroxyl compounds with average hydroxyl equivalent weight of between 100 and 500, containing an average of at least three hydroxyl groups per molecule, and of number average molecular weight between about 300 and about 20,000,the blend of said silicone resin (A) and said polyhydroxyl component (B) having a combined glass transition temperature (T.sub.g) of at least about 50.degree. C.