Title:
CATIONIC-GROUP-CONTAINING COPOLYMER AND THICKENER
Document Type and Number:
Japanese Patent JP3221851
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a cationic-group-containing copolymer improved in thixotropy and absorbability by the skin, the hair or the like by radical- polymerizing a cationic-group-containing vinyl polymer with a hydrophilic nonionic-group-containing vinyl monomer having a specified structure and a crosslinking vinyl monomer.
SOLUTION: The cationic-group-containing vinyl monomer of formula I or II is radical-polymerized with a hydrophilic nonionic-group-containing vinyl monomer of formula III or IV and 0.002-5 wt.% crosslinking vinyl monomer having at least two vinyl groups in the molecule at a temp. of 20-90°C for 1-10 hr in the presence of a radical polymerization initiator in water or a hydrophilic organic solvent uniformly miscible with water in an inert gas atmosphere to obtain the title copolymer which, when added in a 0.5 wt.% concentration to ion-exchanged water, has a viscosity at 25°C of 0.3-20 Pa s at a shear rate of 1 sec-1 or of 0.1-5 Pa s at a shear rate of 10 sec-1 on conditions that the viscosity at a shear rate of 1 sec-1 is higher than that at a shear rate of 10 sec-1.
Inventors:
Regular Iwasaki
Tadanori Yoshimura
Takashi Matsuo
Koji Yui
Tadanori Yoshimura
Takashi Matsuo
Koji Yui
Application Number:
JP28517697A
Publication Date:
October 22, 2001
Filing Date:
October 17, 1997
Export Citation:
Assignee:
Kao Corporation
International Classes:
C09K3/00; C08F20/00; C08F220/34; C08F220/60; C08F226/02; (IPC1-7): C08F220/34; C08F220/60; C08F226/02; C09K3/00
Domestic Patent References:
| JP4241197A | ||||
| JP6244270A | ||||
| JP83229A | ||||
| JP2196806A | ||||
| JP63120710A | ||||
| JP224359A |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)
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