Multiple release mold coating for high water, high resiliency polyurethane foam

Claim 1

A composition consisting essentially of: (i) a hydroxyl endblocked polydimethylsiloxane having a molecular weight of about 20,000 to 500,000: (ii) a hydroxyl endblocked polydimethylsiloxane having a molecular weight of about 1,000 to 5,000, the weight ratio of (i) to (ii) being about 3:1 to 19:1; (iii) a siloxane crosslinker having, on average, at least three SiH groups per molecule and selected from siloxanes having the formulae R.sub.2 R'SiO(Me.sub.2 SiO).sub.m (HMeSiO).sub.n SiR'R.sub.2 or R.sub.2 R'SiO(HMeSiO).sub.n SiR'R.sub.2 wherein in each formula Me denotes the methyl radical, R is an alkyl group having 1 to 8 carbon atoms or the phenyl radical, R' is R or hydrogen, m is 1 to about 150 and n is 1 to about 50, said crosslinker being present in such proportion so as to provide an approximate stoichiometric equivalence of SiH functionality for reacting with the total of the hydroxyl functionality provided by components (i) and (ii): (iv) sufficient condensation catalyst to promote reaction of (i) and (ii) with (iii): and (v) an inert organic solvent, said mold release composition containing from about 5 to 95 weight percent of said solvent.