Patent ID: 7750106
Filing Date: 2010-07-06
Classification: A61K,A61Q,C08G,C08L,Y10T

Abstract:
1. A method for forming an elastomeric film on a body comprising: applying to said body, a siloxane polymer, a functional agent and a hydrosilane or a hydrosiloxane in the presence of a cross-linking catalyst; said siloxane polymer having at least two alkenyl-functionalized terminal groups or alkenyl-functionalized side chains; said hydrosiloxane having at least two Si—H units at the terminal ends; wherein said cross-linking catalyst induces in situ cross-linking of said siloxane polymer through the addition reaction of said hydrosilane or a hydrosiloxane to said terminal groups or side chains of said siloxane polymer to provide a highly elastomeric, water-resistant, oil-resistant and durable film thereon; wherein the elastomeric film contains a functional agent, said functional agent does not migrate or transfer from the elastomeric film, and said elastomeric film is a cosmetic or personal care product, wherein said hydrosilane or hydrosiloxane is selected from the group consisting of alkyltrihydrosilanes, aryltrihydrosilanes, dialkyldihydrosilanes, diaryldihydrosilanes, trialkylhydrosilanes, triarylhydrosilanes, alkylhydrosiloxanes, arylhydrosiloxanes, t-butyldimethylhydrosilane, triethylhydrosilane, diethyldihydrosilane, triisopropylhydrosilane, or combinations thereof.