Patent ID: 7807012

Claim:
A thermal curable composition comprising: (a) 100 parts by weight of a glycidyl ether epoxide resin; (b) 50-300 parts by weight of a carbinol functional silicone resin or a mixture of a carbinol functional silicone resin and an anhydride functional silicone resin, wherein the carbinol functional silicone resin has a carbinol equivalent weight of 100-1000, and contains the units: (R 1 3 SiO 1/2 ) a (R 2 2 SiO 2/2 ) b (R 3 SiO 3/2 ) c and (SiO 4/2 ) d , wherein R 1 and R 2 are each independently a hydrogen atom, an alkyl group having 1-8 carbon atoms, an aryl group, a carbinol group free of aryl groups having at least 3 carbon atoms, or an aryl-containing carbinol group having at least 6 carbon atoms; R 3 is an alkyl group having 1-8 carbon atoms or an aryl group; a has a value of less than or equal to 0.5; b has a value of less than or equal to 0.3, c has a value of 0.3-0.8; d has a value of less than 0.5; and the value of a+b+c+d=1; there being on average, at least one carbinol group per carbinol functional silicone resin molecule; and greater than 10 percent by weight of the R 1 +R 2 +R 3 groups are phenyl groups; and optionally (c) 0-10 parts by weight of a thermal catalyst.