| abstract |
Organosilicon compositions which impart good and immediate non-stick properties to cellulosic and synthetic materials are provided comprising a mixture of dimethylpolysiloxane polymer, a catalyst, an epoxy silane, a crosslinking system and organic solvent, the crosslinking system comprising 70 to 95% of at least one organosilicon compound possessing at least 3 acyloxy groups bonded to one or more silicon atoms, which is a silane of the formula RSi(OCOR") 3 , a disilane, a disiloxane or a disilylalkane of the formula (R"COO) 3 -d ' R d ' Si(X) f SiR d (OCOR") 3 -d , in which R and R" are as defined above, X represents an oxygen atom or the alkylene radical --(CH 2 ) h --, each of d and d', which may be identical or different, represents zero, 1 or 2, the sum d + d' being 2 or 3, f represents zero or 1 and h represents 2 or 4, and 2) 5 to 30% of at least one hexaalkoxymethylmelamine, the alkoxy groups each having 1 to 4 carbon atoms. |