Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-09-14
1984-10-23
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C08F27904
Patent
active
044789823
ABSTRACT:
A high nitrile content based resin produced by graft polymerizing in the presence of a rubber, a first group of monomers in a first polymerization step, then a second group of monomers in a second polymerization step, wherein the resin comprises (A) 5 to 25 parts by weight of said rubber; (B) 5 to 40 parts by weight of the product of said first polymerization step comprising 30 to 60 weight percent unsaturated nitrile and 70 to 40 weight percent vinyl compound having aromatic vinyl compound as an essential element; and (C) 35 to 90 parts by weight of the product of said second polymerization step comprising 60 to 85 weight percent unsaturated nitrile and 40 to 15 weight percent vinyl compound having aromatic vinyl compound an alkyl methacrylate and/or alkyl acrylate; wherein the resin has higher impact resistance, excellent processibility together with the properties of excellent gas barrier and chemical resistance.
REFERENCES:
patent: 3950455 (1976-04-01), Okamoto
patent: 4120851 (1978-10-01), Chi
patent: 4154777 (1979-05-01), Shoji
Azuma Masaaki
Furukawa Hiroyasu
Hashimoto Yoshihiko
Matsumura Shoichi
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
Kojima Moonray
Michl Paul R.
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