Thermally reversible copolymers and process for the preparation

Details Thermally reversible copolymers and process for the preparation Thermally reversible copolymers and process for the preparation

1981-09-18

1982-12-14

Hamrock, William F.

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

Synthetic resins

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

525218, C08F22238

Patent

active

043638970

ABSTRACT:
The invention disclosed herein provides a novel thermally reversible copolymer having up to about 11 percent by weight of an N-(alkoxymethyl)acrylamide, a diene-containing synthetic rubber and a metal. The thermally reversible copolymer can be blended with conventional styrene-butadiene rubbers to improve the green strength thereof. Also disclosed herein is a process for improving the green strength of styrene-butadiene rubber which includes the steps of charging a reaction vessel with water, an emulsifier, an initiator, an N-(alkoxymethyl)-acrylamide monomer and a vinyl monomer where one is desired, purging the vessel with an inert gas, charging a diene monomer and an activator to the reaction vessel, polymerizing the monomers to form a copolymer latex, coagulating the latex with an aqueous metal salt to form a thermally reversible polymer and compounding the thermally reversible polymer with styrene-butadiene rubber.

REFERENCES:
patent: 3037963 (1962-06-01), Christenson
patent: 3070434 (1963-02-01), Christenson et al.
patent: 3118852 (1964-01-01), Christenson et al.
patent: 3247139 (1966-04-01), Christenson et al.
patent: 3320204 (1967-05-01), Blanchard et al.
patent: 3404134 (1968-10-01), Rees
patent: 3429952 (1969-02-01), Nordsick et al.
patent: 3493550 (1970-02-01), Schmitt et al.
patent: 3649578 (1972-03-01), Bush et al.
patent: 3804923 (1974-04-01), Suzuki et al.
patent: 3808168 (1974-04-01), Young et al.
patent: 3832317 (1974-08-01), Mikofalvy et al.
patent: 3950313 (1976-04-01), Bain et al.
patent: 4205150 (1980-05-01), Marubashi

Affiliated with

Also associated with

Rating

Thermally reversible copolymers and process for the preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1201941