Preparing urethane polymer mixing isocyanate and premix of hydroxylated tertiary amine providing a crystalline polymer phase and polyol providing an amorphous polymer phase interdispersed with crystalline phase

The method according to claim 6 or 10, including also selecting polytetramethyleneoxide ether polyol, D.B. castor oil, or hydroxylated glyceryltriricinoleate triester reagent reactive with isocyanate as said hydrophobic organic polyfunctional active hydrogen moiety.

Composition comprising a urethane polymer reaction product of a first side comprising an isocyanato reagent simultaneously with a second side comprising a premix of an hydroxylated tertiary amine reagent and a polyol reagent selected to be slower reacting with said isocyanato reagent than said amine reagent in noncrystalline polymer forming relation, said polymer reaction product comprising a crystalline phase produced by the reaction of said amine and said isocyanato reagent, and a noncrystalline amorphous phase produced by reaction of said slower reacting polyol and said isocyanato reagent, said crystalline phase being interdispersed with said noncrystalline amorphous phase.