Silyl-terminated polymers

A method of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule, the method comprising:

• providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and having a number average molecular weight of between about 100 and about 5000;
• adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, wherein the hydrosilylation reaction has a hydrosilylation efficiency of at least about 70% as determined by 1H-NMR;
• capping the hydrosilylated polyoxyalkylene polymers by exposing the hydrosilylated polymer to at least one isocyanate at an isocyanate index of between about 100 and about 250 to form a composition comprising isocyanate capped hydrosilylated polymers;
• and
• reacting the isocyanate capped hydrosilylated polymer with a polyol having a nominal functionality of at least 2 and which comprises at least one of a polycarbonate polyol, a natural oil based polyol, a polyoxyalkyleneamine, a difunctional aromatic amine, a polybutyloxide polyether polyol, and a polytetramethylene glycol to form the composition comprising a crosslinkable silane-terminated polymer.