Title:
PAPER QUALITY IMPROVER FOR PAPERMAKING
Document Type and Number:
Japanese Patent JP3810986
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a paper quality improver for papermaking excellent in effects such as an improvement in bulk, brightness or opacity desired for reducing the weight and increasing the amount of a compounded waste paper pulp even by addition thereof in a small amount and further excellent in improving effects on paper strength.
SOLUTION: This paper quality improver for papermaking comprises (A) a compound providing ≥4% lyotropic degree measured by a specific method and satisfying any two or more of (i) ≥0.02 g/cm3 standard degree of improvement in bulk, (ii) ≥0.5 point standard degree of improvement in brightness and (iii) ≥0.5 point standard degree of improvement in opacity and (B) a water- soluble polymer satisfying at least either one of the specific ranges of the average molecular weight or viscosity.
Inventors:
Koji Ikeda
Takashi Tadokoro
Takashi Tadokoro
Application Number:
JP2000153270A
Publication Date:
August 16, 2006
Filing Date:
May 24, 2000
Export Citation:
Assignee:
Kao Corporation
International Classes:
C08K5/103; D21H21/22; C08K5/17; C08K5/20; C08K5/3445; C08L3/00; C08L5/00; C08L29/04; C08L33/26; C08L83/04; C08L101/14; D21H17/37; D21H21/14; D21H17/06; D21H17/07; D21H17/09; D21H17/14; D21H17/28; D21H17/29; D21H17/36; D21H17/59; D21H17/60; D21H21/24; (IPC1-7): D21H21/22; C08K5/103; C08K5/17; C08K5/20; C08K5/3445; C08L3/00; C08L5/00; C08L29/04; C08L33/26; C08L83/04; C08L101/14; D21H17/37
Domestic Patent References:
| JP2971447B1 | ||||
| JP3283246B2 | ||||
| JP3283248B2 |
Attorney, Agent or Firm:
Kaoru Furuya
Takahiko Mizobe
Satoshi Furuya
Shinji Mochida
Yoshitsune Kazumasa
Takahiko Mizobe
Satoshi Furuya
Shinji Mochida
Yoshitsune Kazumasa