Copolymer grafted with polyamide, material comprising it, preparation process and uses

Abstract

The invention relates to a graft copolymer composed of a block copolymer of general formula B-(A)n in which A is a rigid block polymer with a glass transition temperature of more than 0° C., B is a flexible block polymer with a glass transition temperature of less than 0° C.; and n is 1 or is a natural integer greater than 1, it being possible for the blocks A, when n is 2 or more, to be identical or different; and of polyamide (PA) grafts which are carried by the rigid polymer block or blocks, the resulting graft copolymer being represented by the formula (Ag)m-B-(A)p in which A and B are as defined above, Ag is the block A carrying at least one graft (PA) and m and p are natural integers whose sum is equal to n, but p being able to be equal to 0.

Dependencies are inferred from the claim text.