| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | National Starch (Wilmington; Del) |
| PATENT CLAIMS |
Graft copolymer comprising backbone polymer to which are grafted amine terminated polysaccharide polymeric groups; the graft copolymer characterized in that - Backbone polymer is a pressure sensitive polymer having Tg < -30C prepd from acrylic, methacrylic & vinyl monomers - The grafted polymer groups absorb < 10% of skin penetra tion enhancer under thermodynamic equilibrium at 25C when introduced into an excess of the enhancer |
| PATENT PHOTOCOPY | Available on request |
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