Process for the production of paper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 23, 1990
Grant Date -
N/A
app pub date -
Oct 26, 1988
filing date -
Mar 3, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for the production of paper by forming and dewatering a suspension of papermaking fibres on a wire. The formation and dewatering take place in the presence of a cationic polymeric synthetic retention agent, preferably a cationic polyacrylamide, an anionic inorganic colloid and a polyaluminum compound. The process which is carried out at a stock pH above 5 gives an improved dewatering and an improved retention of fine fibres and optional fillers.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully