Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1990-04-23
1992-06-23
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
526 88, 5263171, C08F 210, C08F22006
Patent
active
051244160
ABSTRACT:
A method for the production of an absorbent polymer by the polymerization of a liquid containing an aqeous hydrophilic monomer solution in a reaction vessel provided with at least one rotary stirring blade, which comprises polymerizing said hydrophilic monomer in a reaction vessel wherein, at least a portion of the inner wall surface of said reaction vessel repeatedly exposed to said aqueous solution or said absorbent polymer and a gas has the surface roughness, R.sub.max, thereof adjusted to not more than 3 .mu.m and at the same time said portion of the inner wall of surface is kept cooled constantly to a temperature of not more than 70.degree. C. from behind said portion with a cooling medium.
REFERENCES:
patent: 3503938 (1970-03-01), Blurton et al.
patent: 4049895 (1977-09-01), McOnie et al.
patent: 4625001 (1986-11-01), Tsubakimoto et al.
patent: 4758639 (1988-07-01), Koyamagi et al.
Euro Search Report EP 89 30 5192, 29 Aug., 1990.
Fujihara Teruaki
Haruna Yoshinobu
Irie Yoshio
Yano Akito
Behr Omri M.
Nippon Shokubai Kagaku Kogyo & Co., Ltd.
Schofer Joseph L.
Weber Tom
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