Silicone - (meth)acrylate - polyether copolymer and methods for its preparation and use as a surfactant for foam formulations

A two part foam formulation comprising:

• I) a first part comprising
• i) an isocyanate component, and
• II) a second part comprising
• ii) a polyol,
• iii) a blowing agent, and
• iv) a surfactant, wherein the surfactant comprises a silicone-(meth)acrylate-polyether copolymer comprising unit formula:
• (R12SiO2/2)x(R1R2SiO2/2)y(R13SiO1/2)z, where
• subscripts x, y, and z each represent average numbers of each unit in the unit formula, and subscripts x, y, and z have average values such that
• z=2,
• x=10 to 40, and
• y=1 to 10,
• each R1 is an independently selected alkyl group of 1 to 10 carbon atoms;
• each R2 is an independently selected group of formula:
• -D1-S—R10, where each D1 is an independently selected alkane-diyl group of 1 to 16 carbon atoms, and
• R10 has formula
• where
• each R3 is an endblocker for a poly(meth)acrylate chain,
• each R4 is independently selected from H or methyl,
• ach D2 is independently selected alkane-diyl group of 2 to 4 carbon atoms,
• each subscript n is independently 1 to 25,
• each R5 is independently selected from H and an alkyl group of 1 to 4 carbon atoms,
• each subscript w is independently>0 to 20, and
• with the provisos that in at least one instance of R10, per molecule, subscript n is 5 to 25;
• and
• optionally an additive selected from the group consisting of a flame retardant, a catalyst, and a co-surfactant having a chemical structure different from the copolymer.