The present invention relates to a product of reaction between an amino functional polymer comprising at least one primary and/or secondary amine and one or more active ingredient. By the present invention, there is provided a release of the active component over a longer period of time than by the use of the active itself.
This application is a continuation under 35 U.S.C. .sctn. 120 of U.S. application Ser. No. 10/310,247 filed Dec. 5, 2002 now U.S. Pat. No. 6,699,823, which in turn is a continuation under 35 U.S.C. .sctn. 120 of U.S. application Ser. No. 09/720,404 (now U.S. Pat. No. 6,511,948) filed on Dec. 20, 2000, which is an entry into the U.S. National Stage under 35 U.S.C. .sctn. 371 of PCT International Application Serial No. PCT/US99/15680, filed Jul. 12, 1999, which in turn claims priorty under 35 U.S.C. .sctn. 119 to EP 98870156.1 filed Jul. 10, 1998, EP 98870227.0 filed Oct. 28, 1998, and EP 99870026.4 filed Feb. 11, 1999.
Priority Data
Jul 10, 1998 [EP] 98870156 Oct 28, 1998 [EP] 98870227 Feb 11, 1999 [EP] 99870026
