Title:
【発明の名称】ビニルアミン単位を含有する微粒状の水溶性ポリマーの製造法
Document Type and Number:
Japanese Patent JP2951014
Kind Code:
B2
Abstract:
N-vinylformamide is polymerized with or without other water-soluble monoethylenically unsaturated monomers and with or without water-insoluble monoethylenically unsaturated monomers in not less than 30% strength by weight aqueous monomer solutions in the presence of a polymerization initiator at not more than 150 degrees C. in a kneader by a method in which the polymerization is carried out to such an extent that the initially formed water-containing polymer gel disintegrates into fine particles and the finely divided polymer obtainable in this manner is hydrolyzed, preferably in the kneader, so that not less than 0.1 mol % of the N-vinylformamide units present in the polymer are converted into vinylamine units. The polymers obtainable in this manner dissolve readily in water. The aqueous solutions are used, for example, in papermaking and tertiary oil production.
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Inventors:
DEIITOMARU MENHI
MIHYAERU KUREENAA
ENRIKE FUROIDENBERUKU
HAINRITSUHI HARUTOMAN
NORUBERUTO ZENTOHOFU
MIHYAERU KUREENAA
ENRIKE FUROIDENBERUKU
HAINRITSUHI HARUTOMAN
NORUBERUTO ZENTOHOFU
Application Number:
JP3730191A
Publication Date:
September 20, 1999
Filing Date:
March 04, 1991
Export Citation:
Assignee:
BEE AA ESU EFU AG
International Classes:
C08F2/10; C08F8/12; C08F26/00; C08F26/02; (IPC1-7): C08F8/12; C08F2/10; C08F26/02
Domestic Patent References:
| JP5125109A | ||||
| JP211609A | ||||
| JP3195703A | ||||
| JP5939399A | ||||
| JP639523B2 |
Attorney, Agent or Firm:
Toshio Yano (2 outside)