Silicone-type coating resin solution

Details Silicone-type coating resin solution Silicone-type coating resin solution

1983-12-12

1985-04-09

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524375, 524376, 524379, 524385, 524391, 525477, 528 39, C08K 507

Patent

active

045102830

ABSTRACT:
A silicone-type coating resin solution and a process for preparing the solution. This solution comprises 30 to 60 parts by weight of a hydrolytic condensation polymer of tetramethoxysilane or tetraethoxysilane (PDAS) having a weight average molecular weight of 1,000 to 6,000 and 70 to 40 parts by weight of a polysilsesquioxane prepolymer (PLOS) having a weight average molecular weight of 2,500 to 7,000 and in which each of 5 to 50 mole % of the organic groups attached directly to the silicon atoms is a phenyl group and the remaining organic groups are methyl, ethyl, or vinyl groups, these polymer components being dissolved in an organic solvent having a boiling point of not less than 110.degree. C. under a pressure of 760 mmHg. This solution is prepared by dissolving PDAS and PLOS in an organic solvent having a high boiling point and treating the resultant solution under a reduced pressure of not more than 5 mmHg.

REFERENCES:
patent: 3529035 (1970-09-01), Lamoreaux
patent: 3624030 (1971-11-01), Pruvost

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