Preparation of water-soluble copolymers containing vinylamine un

Details Preparation of water-soluble copolymers containing vinylamine un Preparation of water-soluble copolymers containing vinylamine un

1988-04-29

1989-11-14

Chin, Peter

Paper making and fiber liberation

Processes and products

With coating after drying

1621682, 162184, 427391, D21H 138

Patent

active

048804975

ABSTRACT:
Water-soluble copolymers containing copolymerized vinylamine units are prepared by copolymerizing (a) from 95 to 10 mol % of N-vinylformamide and (b) from 5 to 90 mol % of an ethylenically unsaturated monomer from the group consisting of vinyl acetate, vinyl propionate, C.sub.1 -C.sub.4 -alkyl vinyl ethers, the esters, nitriles and amides of acrylic acid and methacrylic acid and N-vinylpyrrolidone, and then eliminating from 30 to 100 mol % of the formyl groups from the copolymer. Preferred copolymers are copolymers of N-vinylformamide and vinyl acetate, in which from 30 to 100 mol % of the monomer units are hydrolyzed. The copolymers are used in papermaking to increase the dry strength and wet strength of the paper.

REFERENCES:
patent: 3597314 (1971-08-01), Laube et al.
patent: 3715336 (1973-02-01), Nowak et al.
patent: 4421602 (1983-12-01), Brunnmueller et al.

Affiliated with

Also associated with

Rating

Preparation of water-soluble copolymers containing vinylamine un does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of water-soluble copolymers containing vinylamine un, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of water-soluble copolymers containing vinylamine un will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1851267