Preparation of copolymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

528271, 528482, 528490, C08G 6702

Patent

active

053826531

ABSTRACT:
A process for the preparation of linear alternating copolymers of carbon monoxide and an ethylenically unsaturated compound by polymerizing the monomers in the presence of a suitable catalyst system, one or more components present in the reaction mixture being contaminated with alkali(ne earth) metal salt(s), which process involves a treatment by which at least part of the alkali(ne earth) metal salt is removed such that the total amount of alkali(ne earth) metals present in the copolymerization product is less than 1 part per million by weight; a copolymer composition comprising said copolymer, an alkali(ne earth) metal salt contaminant and a stabilizing quantity of a substance which is able to bind at least part of the alkali(ne earth) metal salt. A method for melt processing said copolymer, wherein the copolymer which contains an alkali(ne earth) metal salt contaminant is mixed with a stabilizing quantity of a substance which is able to bind at least part of the alkali(ne earth) metal salt, the substance being other than a hydroxyapatite or a zeolite-type trivalent metal silicate, and wherein the resulting mixture is melt processed.

REFERENCES:
patent: 4824935 (1989-04-01), Van Broekhoven et al.
patent: 4889914 (1989-12-01), Van Broekhoven et al.
patent: 5021496 (1991-06-01), Machado et al.
patent: 5115002 (1992-05-01), Van Helden et al.
patent: 5122564 (1992-06-01), George

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Preparation of copolymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of copolymers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-747631

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.