Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-09-28
1981-05-26
Nielsen, Earl A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 296RB, 260 306R, 260 318M, 525197, 525198, 525215, 525239, C08L 700, C08L 900, C08L 1100
Patent
active
042697409
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.
REFERENCES:
patent: 2870115 (1959-01-01), Schroeder
patent: 3145189 (1964-08-01), Fourier
patent: 3513227 (1970-05-01), De Coene et al.
patent: 4194999 (1980-03-01), Hayashi et al.
Chang Daniel M.
Woods Martin E.
Nielsen Earl A.
The B. F. Goodrich Company
Wymbs Roy P.
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