Continuous production process of a propylene-ethylene block copo

Details Continuous production process of a propylene-ethylene block copo Continuous production process of a propylene-ethylene block copo

1994-09-21

1995-10-24

Seccuro, Jr., Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525258, 525323, 525 53, C08F29708

Patent

active

054611156

ABSTRACT:
A continuous process for producing a propylene-ethylene block copolymer having well-balanced properties of impact strength, stiffness, processability, etc. using a highly active catalyst, with a superior productivity is provided,
which process comprises
a first polymerization step (I), carried out using a catalyst system consisting of [A] a solid catalyst component containing Ti, Mg, halogen and a polyvalent carboxylic acid ester as indispensable components, [B] an organoaluminum compound catalyst component and [C] an electron-donating compound,
using two or more continuous polymerization vessels, and
feeding monomer(s) of ethylene/(ethylene+propylene) of 0 to 5% by weight, to carry out polymerization composed mainly of propylene, so as to give 60 to 95% of the total polymerized quantity;
a continuous addition of a glycol compound (D) expressed by the formula

REFERENCES:
patent: 4739015 (1988-04-01), Toyota et al.
patent: 4760113 (1988-07-01), Chiba et al.
patent: 4771103 (1988-09-01), Chiba et al.
patent: 4808667 (1989-02-01), Goko et al.
patent: 5055528 (1991-10-01), Kioka et al.
patent: 5140062 (1992-08-01), Chiba et al.

Affiliated with

Also associated with

Rating

Continuous production process of a propylene-ethylene block copo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous production process of a propylene-ethylene block copo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous production process of a propylene-ethylene block copo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1887361