Aqueous emulsions of organopolysiloxane compositions adapted for coating flexible substrates

An organopolysiloxane composition of matter, comprising an aqueous emulsion A that includes:

• (V.sub.1) a substantially linear diorganopolysiloxane blocked by a vinyldiorganosiloxyl group at each end of the polymer chain thereof;
• (V.sub.2) a substantially linear random vinylorganodiorganopolysiloxane copolymer blocked at each end of the polymer chain thereof by vinyldiorganosiloxyl or triorganosiloxyl group containing at least three SiVi groups per molecule;
• (H.sub.1) a substantially linear random diorganoorganohydropolysiloxane copolymer containing at least three SiH groups per molecule and blocked at each end of the polymer chain thereof by a triorganosiloxyl or diorganohydrosiloxyl group;
• (V.sub.3) a vinylated cyclotrisiloxane having the formula:
• [R(CH.sub.2 .dbd.CH)SiO].sub.3
• in which R is a C.sub.1 -C.sub.4 alkyl radical, a phenyl radical or a 3,3,3-trifluoropropyl radical, and said vinylated cyclotrisiloxane being present in such amount as to contribute from 0.5 to 60% of the total number of SiVi groups to the composition;
• and
• (E) an emulsifier comprising a mixture of polyvinyl alcohol (E.sub.1) and at least one polyalkylene glycol alkyl ether or polyalkylene glycol alkylphenyl ether (E.sub.2);
• wherein at least 90% of the organic radicals comprising the polysiloxanes (V.sub.1), (V.sub.2) and (H.sub.1) are methyl radicals, with the remaining organic radicals being ethyl, propyl, phenyl or 3,3,3-trifluoropropyl radicals, and further wherein the amounts of (V.sub.1), (V.sub.2), (V.sub.3) and (H.sub.1) are such that the numerical ratio of the SiH groups to the SiVi groups ranges from 0.5 to 5.