Composition and method of improving the unvulcanized properties

Details Composition and method of improving the unvulcanized properties Composition and method of improving the unvulcanized properties

1980-06-23

1982-07-27

Seccuro, 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...

525215, 525232, 525233, 525240, 525237, 521 41, B29H 1900, C08L 1700

Patent

active

043416675

ABSTRACT:
The green strength of compositions containing elastomers and/or up to 100 percent of reclaimed rubber is improved by the addition of crystalline or semi-crystalline butene polymers selected from the group consisting of polybutene and interpolymers made from 1-butene with at least one monomer selected from the group consisting of alpha-olefins, non-conjugated dienes, and non-conjugated polyenes. Although reclaimed rubbers are utilized, an unexpected increase in green strength of an unvulcanized blend is obtained. The reclaimed rubbers utilized in the blend may be those which have been devulcanized by mechanical energy, heat, and/or chemical agents. Additionally and preferably, the rubbers may be reclaimed through the use of microwave energy.
Additionally, the unvulcanized properties of compositions containing 100 percent of scrap rubber which has been reclaimed using microwave energy are significantly improved by adding crystalline or semi-crystalline alpha-olefin polymers, such as polyethylene or polypropylene. Unexpected improvements in solvent resistance and molding properties of the uncured blends are also achieved.

REFERENCES:
patent: 3386925 (1968-06-01), Dillhoefer
patent: 4028288 (1977-06-01), Turner
patent: 4104205 (1978-08-01), Novotny et al.
patent: 4243561 (1981-01-01), Lal et al.

Affiliated with

Also associated with

Rating

Composition and method of improving the unvulcanized properties does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2024303