Patent ID: 6537532
Filing Date: 2003-03-25
Classification: A61K,A61Q,C08F,C08G,C08L

Abstract:
A water or alcohol soluble or dispersible thermoplastic elastomeric copolymer having a backbone and two or more hydrophilic polymeric side chains and one or more polysiloxane side chains, said copolymer formed from the copolymerization of randomly repeating A, B, and C units wherein said copolymer comprises:(i) from about 20% to about 89.9% by weight of said A units, wherein said A units are monomer units that are copolymerizable with said B and C units; (ii) from about 10% to about 60% by weight of said B units, wherein said B units are hydrophilic macromonomer units having a polymeric portion and a moiety that is copolymerizable with said A and C units; and (iii) from about 0.1% to about 20% by weight of said C units, wherein said C units are polysiloxane macromonomer units having a polymeric portion and a moiety that is copolymerizable with said A and B units, wherein said A units, in conjunction with said copolymerizable moieties of said B units and said C units, form said backbone; wherein said polymeric portion of said B units forms said hydrophilic side chains; wherein said polymeric portion of said C units forms said polysiloxane side chains; wherein said copolymer has a weight average molecular weight greater than about 10,000, and wherein said as copolymer exhibits at least two distinct Tg values, said first Tg corresponding to said backbone and having a value less than about 0Â° C., and said second Tg corresponding to said hydrophilic polymeric side chains and having a value greater than about 25Â° C.