Patent ID: 6838530

Claim:
A method of making two or more different multifunctional acrylic materials, the method comprising providing an ethylenically unsaturated monomer mixture (a) comprising two or more monomers (ai) having at least one cyclic carbonate group and the structure wherein L is a linking group selected from aliphatic groups, cycloaliphatic groups, aromatic groups and mixtures thereof of from one to seven carbons, n is a number from zero to six, and R is either hydrogen or an alkyl group of from one to six carbons, wherein at least one monomer (ai) is an acrylic monomer, polymerizing the monomer mixture (a) to make an acrylic backbone polymer (b) comprising two or more cyclic carbonate functional groups (bi), subjecting a first portion of the acrylic backbone polymer (b) to successive or simultaneous reactions of reaction (A) with a first grafting material (c) comprising at least one amine group (ci) and at least one grafting moiety, and reaction (B) with ammonia, to make a first multifunctional material of the formula: wherein A is the residue resulting from the polymerization of ethylenically unsaturated monomers which do not contain a cyclic carbonate group, L is a linking group selected from aliphatic groups, cycloaliphatic groups, aromatic groups and mixtures thereof of from one to seven carbons, p is number of from 0 to 5, C NH3 is the reaction product of ammonia with a cyclic carbonate functional group and will have a structure selected from the group of formulas (I), (II) and (III): wherein C′ is a saturated carbon having substituents selected from hydrogen and alkyl groups of from one to six carbons, and n is a number from 0 to 6, and C graft is the reaction product of ammonia and a cyclic carbonate functional group and has at least one structure selected from the group consisting of formulas (IV), (V), and (VI): wherein C′ is a saturated carbon having substituents selected from hydrogen and alkyl groups of from one to six carbons, R is hydrogen or an alkyl group from one to six carbons, and c ii is a grafting moiety selected from aliphatics, cycloaliphatics, polyurethane oligomers and polymers, nonionic groups, polyalkyldienes, triazines, hindered amine light stabilizers, aromatic groups, ionic groups, and mixtures thereof, k is from 1 to 95% by weight of the total sum of k, l, and m, l is from 0 to 98% by weight of the total sum of k, l, and m, and m is from 1 to 95% by weight of the total sum of k, l, and m, and subjecting one or more portions of the acrylic backbone polymer (b) to successive or simultaneous reactions of reaction (A) with at least one additional grafting material that is different from the grafting material (c) and reaction (B) with ammonia, to make multiple multifunctional material of the formula: wherein all variables are as defined above except that c ii is different for each multifunctional material.