Process for producing elastomeric particles free of agglomeration
US4269740A · kind A · utility
13Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Sep 28, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L27/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a process of producing elastomeric particles, such as those of natural and synthetic powdered and crumb rubbers and to the compositions prepared in accordance with such process. Specifically, the invention comprises encapsulating the elastomeric particles with a coating or film of a preplasticized vinyl resin, such as, for example, polymers and copolymers of vinyl and vinylidene halides and the like. The resultant composite particles are free-flowing and free of irreversible agglomeration and can be used in dry-blending with other materials prior to being formed into useful articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.