US 7,498,398 B2
Thermoplastic composition, method of making, and articles formed therefrom
Jianbo Di, Evansville, Ind. (US); Brian Mullen, Mt. Vernon, Ind. (US); and Paul Dean Sybert, Evansville, Ind. (US)
Assigned to SABIC Innovative Plastics IP B.V., Bergen op Zoom (Netherlands)
Filed on Mar. 21, 2006, as Appl. No. 11/385,171.
Prior Publication US 2007/0225470 A1, Sep. 27, 2007
Int. Cl. C08G 63/00 (2006.01); C08G 64/00 (2006.01)
U.S. Cl. 528—196  [264/176.1; 264/219; 428/411.1; 428/412; 528/198] 20 Claims
 
1. A polyacrylate-polycarbonate copolymer comprising:
a polycarbonate block comprising aromatic carbonate units, and
a polyacrylate block derived from a difunctional polyacrylate polymer having the formula
Z1-(M)x-Z2
wherein M is an acrylate block unit comprising a reaction residue of a (meth)acrylate monomer, a non-(meth)acrylate monomer, or a combination comprising a (meth)acrylate and a non-(meth)acrylate monomer, and wherein at least one acrylate block unit is a reaction residue of a (meth)acrylate monomer; x is greater than one; and Z1 and Z2 are each independently functionalized terminal groups of the formula
-(A3)y-B,
wherein B is a reactive end group comprising a hydroxy group or non-hydroxy group, A3 is an aliphatic linking group, an aromatic linking group, or an aliphatic-aromatic linking group, and y is 0 or 1, and
wherein A3 is free of hydrogen atoms located on a carbon atom in a position beta to B when B is a hydroxy group, and B and A3 are each free of sulfur atoms;
wherein the polyacrylate block has a Tg of less than or equal to −25° C.; and wherein the number and type of acrylate block units of the polyacrylate block, and the weight ratio of polyacrylate blocks and polycarbonate blocks of the polyacrylate-polycarbonate copolymer are selected such that a molded article consisting of the polyacrylate-polycarbonate copolymer having a thickness of 3.2±0.12 millimeters has a haze of less than or equal to 5% as determined according to ASTM D1003-00.