Phenyl ethyl siloxane composition and method of preparing same

Claim 1

A MOLDABLE, SILOXANE-CONTAINING COMPOSITION OF SUPERIOR HEAT RESISTANCE AND OF EXTENDING TRANSIENT THERMOPLASTIC RANGE CONTAINING AS THE SILOXANE PORTION THEREOF A PARTIALLY CONDENSED COHYDROLYZATE OF A MIXTURE OF A PHENYL SILICON TRIHALIDE WITH AN EHTYL SILICON TRIHALIDE, AND ETHYL SILICON TRIHALIDE BEING PRESENT IN AN AMOUNT BETWEEN 10 MOL PER CENT AND 30 MOL PER CENT OF THE TOTAL OF SAID SILICON HALIDES, SAID COHYDROLYZATE BEING CHARACTERIZED BY THE PROPERTY, WHEN CURED, OF POSSESSING A MUCH GREATER HEAT STABILITY THAN THAT OF A HYDROLYZATE OF ETHYL SILICON TRIHALIDE ALONE AND AN APPRECIABLY GREATER HEAT STABILITY THAN THAT OF PHENYL SILICON TRIHALIDE ALONE WHEN ALL THREE ARE PREPARED IN AN OTHERWISE IDENTICAL MANNER AND WHEN ALL THREE ARE SUBJECTED TO A TEMPERATURE OF 425* C. FOR 2 HOURS.