	US 7,459,503 B2
	Process for production of modified propylene polymers and modified propylene polymers produced by the process
Masami Kanamaru, Chiba (Japan); Yutaka Minami, Chiba (Japan); Ryo Aburatani, Chiba (Japan); Tomio Tatsumi, Chiba (Japan); and Takenori Fujimura, Chiba (Japan)
Assigned to Idemitsu Kosan Co., Ltd., Tokyo (Japan)
Appl. No. 10/509,329 PCT Filed Apr. 11, 2003, PCT No. PCT/JP03/04631 § 371(c)(1), (2), (4) Date Mar. 29, 2005, PCT Pub. No. WO03/087172, PCT Pub. Date Oct. 23, 2003.
Claims priority of application No. 2002-110327 (JP), filed on Apr. 12, 2002.
Prior Publication US 2005/0171295 A1, Aug. 04, 2005
Int. Cl. C08F 8/06 (2006.01); C08F 8/46 (2006.01)

U.S. Cl. 525—386 [525/301; 525/386; 525/263]

9 Claims

1. A method for producing a modified propylene homopolymer, the method comprising:

modifying a propylene homopolymer with a radical initiator and an organic acid;

wherein the propylene homopolymer satisfies the conditions:

(a) mmmm =20 to 60 mol %;

(b) [rrrr/(1-mmmm)]≤0 1;

(d) mm×rr/(mr)²≤2.0; and

(e) a weight ratio (W25) of components eluted at 25° C. or lower in a temperature programmed chromatography is 20 to 100% by weight.