Patent ID: 7652090

Claim:
A fire resistant polymer composition based on a crosslinkable organopolysiloxane and containing inorganic filler for forming a self supporting ceramic under fire conditions, the composition comprising: the crosslinkable organopolysiloxane present in an amount of from 56.5% to 76.75% by weight of the total composition; mica in an amount of from 5% to 30% by weight based on the total weight of the composition; and a glass additive in a form selected from a group consisting of glass frits, glass fibre, and mixtures thereof in an amount of from 0.3% to 8% by weight based on the total weight of the composition, wherein after the composition is heated to 1000° C. and then held at 1000° C. for 30 minutes in air the composition exhibits less than about 10% volume shrinkage.