Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1982-03-17
1984-03-13
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524533, 525228, 525309, C08L 2722, C08F25904
Patent
active
044368615
ABSTRACT:
A particulate vinyl chloride polymer having excellent processability and heat stability which comprises porous vinyl chloride polymer particles and acrylic polymers which are included in the above porous particles. The particulate polymer is prepared by impregnating an alkyl acrylate in porous particles of a vinyl chloride polymer, polymerizing it, and in the course of the polymerization of the alkyl acrylate, adding an alkyl methacrylate to the polymerization system and continuing the polymerization. Since the thus obtained polymer has an improved melt-flowability and heat stability, it can be blended with a large quantity of an inorganic filler and can be molded with good processability.
REFERENCES:
patent: 3859384 (1975-01-01), Carty et al.
patent: 3903198 (1975-09-01), Wei
patent: 3928500 (1975-12-01), Kraft et al.
Furukawa Hiroyasu
Kobayashi Masahiro
Ueno Kenji
Ushioda Minoru
Briggs Sr. Wilbert J.
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
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