Enhancement of paper dry strength by anionic and cationic guar c

Details Enhancement of paper dry strength by anionic and cationic guar c Enhancement of paper dry strength by anionic and cationic guar c

1994-02-28

1996-03-26

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

162178, 1621683, 162183, 1621646, 1621643, C08L 8900, D21H 1100, D21H 1300, D21H 1500

Patent

active

055020917

ABSTRACT:
A process for making paper to enhance the dry strength of the paper produced without substantially reducing its softness comprising adding to a bleached pulp furnish, separately or together, (1) an anionic polymer selected from the group consisting of carboxymethyl guar, carboxymethyl bean gum, carboxymethyl hydroxyethyl guar, and a carboxymethyl hydroxypropyl guar, with (2) a cationic polymer selected from the group consisting of a cationic guar, a cationic acrylamide copolymer, a cationic bean gum, a cationic amine-epichlorohydrin wet strength resin, and both a cationic wet strength resin and at least one of the other said cationic polymers, a composition for adding to a paper-making pulp slurry comprising the said polymers, a method for making the said composition, and a paper product containing the said composition, are disclosed.

REFERENCES:
patent: 3049469 (1962-08-01), Davison
patent: 3058873 (1962-10-01), Keim et al.
patent: 3332834 (1967-07-01), Reynolds
patent: 3819555 (1974-06-01), Kaufman
patent: 4002588 (1977-01-01), Strazdins
patent: 4557801 (1985-12-01), Avis
patent: 4925530 (1990-05-01), Sinclair et al.
Casey, James P., Pulp and Paper, Third edition (1981), vol. III, pp. 1501-1506.

Affiliated with

Also associated with

Rating

Enhancement of paper dry strength by anionic and cationic guar c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Enhancement of paper dry strength by anionic and cationic guar c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhancement of paper dry strength by anionic and cationic guar c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-916056