Radiation curable acrylate-terminated polymers having polycarbonate repeating units
AssigneeSartomer Technology Company, Inc.
InventorsMingxin Fan, Gary Ceska, James Horgan, Robert Adams, William Schaeffer, Josh Oliver
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Abstract
Polyester based polycarbonate (meth)acrylates prepared by the reaction of a alkylene or arylene diol polycarbonate with an anhydride or its dicarboxylic acid to form a carboxyl terminated diester, reacting the diester with a diglycidyl ether and an acrylic or methacrylic acid to form an acrylate terminate polymer which is useful for radiation cured coatings which have superior adhesion and reverse impact strength when applied to plastic substrates.
Claims14
Polymer of the formula (I)
- (Acr)yA—R—DE—(PC)[(DE)(PC)]x—DE—R—A(Acr)y (I)
- wherein
- (Acr)yA is an acrylate or methacrylate functional residue of a carboxylic acid containing acrylic or methacrylic monomer;
- y is the number of acrylate or methacrylate groups.
- PC is the residue of an alkylene or arylene diol polycarbonate of the formula (II)
- HO(R′OCOO)nR′OH (II)
- in which R′ is one or more (C2 to C10) alkylene or one or more (C6 to C12) aromatic group;
- X is from 0 to 20;
- y is an integer from 1 to 5;
- n is an integer from 1 to 10,000.
- R is a divalent organic linking group, a residue from the diepoxide;
- DE is a diester linking group derived from the residue of an anhydride or its dicarboxylic acid;
- DE and PC are connected by an ester group;
- R and DE are connected by an ester group;
- A and R are connected by an ester group.
Process of preparing a polymer of formula (I) comprising reacting an alkylene or arylene diol polycarbonate with an anhydride or its dicarboxylic acid to form a carboxyl terminated diester, and reacting the diester with a diglycidyl ether and an acrylic or methacrylic monomer containing a carboxylic acid group.
Radiation curable compositions prepared by curing polymer of formula (I) by applying it to a substrate and curing in the presence of UV or EB radiation.
Dependencies are inferred from the claim text.