PROCESS FOR PRODUCING MODIFIED PROPYLENE POLYMER, MODIFIED PROPYLENE POLYMER OBTAINED BY THE PRODUCTION PROCESS, AND COMPOSITION CONTAINING THE MODIFIED PROPYLENE POLYMER

摘要

Provided is a process for producing a modified propylene polymer which includes using a radical initiator and an organic acid to modify a propylene homopolymer satisfying the following (a) to (h): (a) mmmm is 40 to 50 mol%; (b) [rrrr/(1-mmmm)] ‰ 0.05; (c) rmrm is 2.5 mol% or more; (d) mm × rr/(mr) 2 ‰ 2.0; (e) Mw/Mn is 2.5 or lower; (f) Mw is 50,000 to 200,000; (g) [·] is 1.5 dL/g; and (h) Tm is 65 to 85°C. Also provided are: a modified propylene polymer obtained by the production process; and a composition, a surface treatment agent for a polyolefin resin, and a primer each containing the modified propylene polymer.