PROPYLENE BLOCK COPOLYMER

摘要

A polymer is provided which, even when no halogen such as chlorine is contained therein, has satisfactory adhesiveness and applicability in coating to propylene polymers as substrates and which has surface hydrophilicity. It is a propylene block copolymer characterized by being represented by the following formula (I):
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒPP-a-R€ƒ€ƒ€ƒ€ƒ€ƒ(I)
(wherein PP represents a polypropylene segment in which the proportion of pentads represented by mmmm to all pentads is 10-60%; symbol a represents a group which connects PP to R; and R represents a polymer segment containing polar groups).