POLYACYLOXYSILANE-CONTAINING ORGANOPOLYSILOXANE COMPOSITIONS HARDENING INTO ELASTOMERS IN THE PRESENCE OF A PHOSPHATE

摘要

Organopolysiloxane compositions which rapidly harden to the elastomeric state, even at ambient temperatures, are comprised of (i) a polyhydroxylated polysiloxane, (ii) a polyacyloxysilane cross-linking agent therefor, and (iii) a hardening accelerator comprising water and an alkali or alkaline earth metal phosphate and/or polyphosphate. The subject compositions are useful, inter alia, for providing elastomeric seals.