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
1989-08-29
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...
525102, 525104, 525105, 525106, 525288, 525902, C08F 800, C08L 8304
Patent
active
048618314
ABSTRACT:
Particulate, multiphase polymers which have a core (A) and an overlying shell (B) wherein the core (A) is an organic, resinous polymer comprising polymerized olefinically unsaturated monomer units having softening point temperatures of at least 30.degree. C. and wherein the shell (B) is an organopolysiloxane are obtained by producing in a first stage an organic resinous 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) organopolysiloxane by polymerizing low molecular weight organosiloxanes in the presence of the latex particles of the first stage.
REFERENCES:
patent: 3686356 (1972-08-01), Saam
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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