ORGANOSILICON COMPOSITIONS PARTICULARLY SUITABLE FOR THE NON-STICK, RUBRESISTANT TREATMENT OF CELLULOSIC AND SYNTHETIC MATERIALS

摘要

Organosilicon compsns. contain 0.001-0.1 parts Pt, present as complex Pt derivs. of P, having general formula PtCl2 x 2P(NRR')3, (I), (where R and R' are 1-8C monovalent hydrocarbyl or combine to form a monovalent heterocycle with the N atom), in addn. to (A) 100 parts polymer mixt. consisting of (i) 60-100% diorgano-polysiloxane polymers (II) with terminal OH gps. having viscosity =10 cP at 25 degrees C and 40-0% diorganopolysiloxane oils (III) blocked by a triorganosiloxy gp. at one chain-end and by a triorganosiloxy gp. or OH at other chain-end, having viscosity 5-5000 cP at 25 degrees C, or (II) 30-90% (II) and 70-10% diorganopolysiloxane rubbers (IV) blocked by triorganosiloxy gps. at each chain-end, having viscosity 100000 cP at 25 degrees C, where organic gps. bonded to Si atoms in (i) and (ii) are Me, vinyl, Et and n-propyl; =80% being Me and 3% being vinyl, there is only 1 Si-bonded vinyl gps., and (B) 1-15 parts organic hydrogen polysiloxane polymers (V) of formula GxHySi4-x-y/2 (where G is Me, Et or n-propyl, =80% G are Me, x is 1-1.99, y is 0.1-1, x+ v is 1.7 to 2.6) having viscosity 2-4000 cP at 25 degrees C.