Patent ID: 6229007
Filing Date: 2001-05-08
Classification: C08B

Abstract:
A method of making an amine or imine functional cellulose ester resin, comprisingproviding a cellulose ester resin comprising one or more repeat units of the structure ##STR17##whereinR.sub.1, R.sub.2, and R.sub.3 are selected independently from the group consisting of hydrogen, acetoacetyl, and R.sub.4 C.dbd.O,R.sub.4 is selected from the group consisting of C.sub.1 -C.sub.20 alkyl groups, C.sub.1 -C.sub.20 phenyl groups, C.sub.1 -C.sub.20 napthyl groups, C.sub.1 -C.sub.20 alkenyl groups, and mixtures there of,at least one of R.sub.1, R.sub.2, and R.sub.3 is R.sub.4 C.dbd.O,at least one of R.sub.1, R.sub.2, and R.sub.3 is H, andat least 0.5 to 10% of the total weight of the cellulose ester resin is of R.sub.1, R.sub.2, and R.sub.3 groups which are acetoacetyl, and,reacting the cellulose ester resin with an amine functional compound comprising at least one primary amine group to provide an amine or imine functional cellulose ester resin comprising at least one repeat unit of the structure: ##STR18##wherein R.sub.1, R.sub.2, and R.sub.3 are selected independently from the group consisting of hydrogen, R.sub.4 C.dbd.O, and ##STR19##whereinat least one of R.sub.1, R.sub.2, and R.sub.3 is hydrogen,at least one of R.sub.1, R.sub.2, and R.sub.3 is R.sub.4 C.dbd.O, andat least one of R.sub.1, R.sub.2, and R.sub.3 is ##STR20##R.sub.4 is selected from the group consisting of C.sub.1 -C.sub.20 alkyl groups, C.sub.1 -C.sub.20 phenyl groups, C.sub.1 -C.sub.20 napthyl groups, and C.sub.1 -C.sub.20 alkenyl groups,R.sub.6 is selected from the group consisting of H and compounds having at least one primary, secondary, or tertiary amine group, andL is a divalent linking group having from 1 to 20 carbons atoms and from 0 to 10 heteroatoms selected from the group consisting of oxygen, nitrogen, and mixtures thereof.