Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-02-10
1989-08-22
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525106, 525104, 525105, 525106, 525288, 525902, C08F 800, C08L 8304
Patent
active
048597406
ABSTRACT:
Particulate, multiphase polymers which have a core (A) and an overlying shell (B) wherein the core (A) is an organic, rubber-like polymer comprising polymerized olefinically unsaturated monomer units having softening point temperatures below 0.degree. C. and wherein the shell (B) is an organopolysiloxane are obtained by producing in a first stage an organic rubber-like polymer in latex form by emulsion polymerization and, in a second stage, the latex particles of the first stage are surrounded with a shell (B) or organopolysiloxane by polymerizing low molecular weight organosiloxanes in the presence of the latex particles of the first stage.
REFERENCES:
patent: 3686356 (1972-08-01), Scam
patent: 3691257 (1972-09-01), Kendrick et al.
patent: 3808180 (1974-04-01), Owens
patent: 4276389 (1981-06-01), Wieder et al.
Damrath Volker
Kress Hans-Jurgen
Lindner Christian
Wittmann Dieter
Bayer Aktiengesellschaft
Bleutge John C.
Dean Jr. Ralph H.
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