Patent ID: 8633273

Claim:
A curable polyamide-filled acrylate polymer composition consisting essentially of A. a polymer blend composition comprising 1. 40 to 90 wt. % of one or more amorphous acrylate polymers comprising at least 50 wt. %, based on the total weight of the amorphous acrylate polymer, of polymerized units of at least one monomer having the structure Where R 1 is H or C 1 -C 10 alkyl and R 2 is C 1 -C 12 alkyl, C 1 -C 20 alkoxyalkyl, C 1 -C 12 cyanoalkyl, or C 1 -C 12 fluoroalkyl; and 2. 10-60 wt. % of one or more polyamides having a melting peak temperature of at least 160° C.; wherein i) the one or more polyamides are present as a discontinuous phase in the polymer blend composition, ii) the green strength of the polymer blend composition is less than about 2 MPa, as determined in accordance with ASTM D6746-10, and iii) the weight percentages of the one or more amorphous acrylate polymers and the one or more polyamides are based on the combined weight of the one or more amorphous acrylate polymers and one or more polyamides in the polymer blend composition; B. a peroxide curative; and C. a reinforcing filler, the reinforcing filler being present in the curable acrylate polymer composition in an amount that causes an increase in the Shore A hardness of the cured acrylate polymer composition of no more than about 20 points as compared to the Shore A hardness of a control composition that is of identical composition but for the absence of the reinforcing filler, wherein i) the curable acrylate polymer composition and control composition are formed into test specimens of 1 mm to 2.5 mm thickness, cured by exposure to a temperature of 175° C. for 10 minutes in a closed mold at a pressure of at least 10 MPa, ii) Shore A hardness of the cured acrylate copolymer composition and control composition is determined according to ASTM D2240-06 (1 second reading), and iii) and the cured acrylate polymer composition has a Shore A hardness greater than 40.