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Title:
PRODUCTION OF PAPER IMPROVED IN RETENTION AND DRAINAGE PROPERTY
Document Type and Number:
Japanese Patent JPH10131082
Kind Code:
A
Abstract:

To provide a method for producing paper improved in retention and drainage properties.

In this method for producing paper improved in retention and drainage properties comprising adding an effective amount of cationic non- degraded starch to a wet end system, the cationic non-degraded starch is further modified to a starch having 0.005-0.4 degree of substitution (PS) by either one of (a) ether group of the formed RO (R is a 1-4C hydroxyalkyl or alkl of 2-4C alkenyl) or (b) ester group of the formula (R is a 1-4C alkyl of a 2-4C alkenyl), and completely modified cationic non-degraded starch has at least 1,000cPs Brookfield viscosity at 30°C in 8% aqueous solution.


Inventors:
TSAI JOHN
MALICZYSZYN WALTER
CAPITANI TERESA
KULP CHRISTOPHER L
Application Number:
JP1997000226858
Publication Date:
May 19, 1998
Filing Date:
August 22, 1997
Export Citation:
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Assignee:
NAT STARCH CHEM INVEST
International Classes:
D21H21/14; D21H17/28; D21H17/29; D21H21/10; D21H27/00; (IPC1-7): D21H17/28; D21H21/14
Attorney, Agent or Firm:
石田 敬 (外3名)