Production of random or homogeneous copolymers

Details Production of random or homogeneous copolymers Production of random or homogeneous copolymers

1975-06-24

1977-08-02

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 296R, 260 296AN, 260 297R, 260 326N, 260 328N, 260 4595R, 260470A, 260630Y, 260 73R, 260 793M, 260880R, 260887, 264210R, 526 83, 526220, 526224, 526229, 526259, 526261, 526265, 526281, 526293, 526332, 526342, C08F21814, C08G 8100, C08F20000, C08F22042

Patent

active

040397343

ABSTRACT:
A method is provided for the production of homogeneous copolymers from monomers having differing reaction rates; in particular copolymers of acrylonitrile or of vinylidene chloride are disclosed. The monomers are fed to the reaction mixture at a rate sufficient to maintain a constant monomer ratio in the reaction mixture throughout the course of the reaction, the rate of addition being determined by the rate of evolution of heat as measured by the rate that a cooling system removes heat evolved by the reaction. An injection-mouldable copolymer consisting essentially of acrylonitrile units and uniformly distributed units of styrene or .alpha.-methyl styrene may be produced in this way. Films of the copolymer can be oriented by stretching at 90.degree.-140.degree. C. Its softening point may be increased by copolymerizing a minor amount of N-aryl maleimide.

REFERENCES:
patent: 2417294 (1947-03-01), D'Alelio
patent: 2528710 (1950-11-01), Richards
patent: 2721785 (1955-10-01), Zybert
patent: 3198775 (1965-08-01), Delacretaz et al.
patent: 3275612 (1960-09-01), Bechtold
patent: 3819762 (1974-06-01), Howe

Affiliated with

Also associated with

Rating

Production of random or homogeneous 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 Production of random or homogeneous copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of random or homogeneous copolymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2299892