Cationic cellulose product and method for its preparation

Details Cationic cellulose product and method for its preparation Cationic cellulose product and method for its preparation

1983-06-24

1986-11-25

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

8181, 8196, 162 9, 162182, D21H 348

Patent

active

046247432

ABSTRACT:
The invention is a fibrous, cationic cellulose pulp product and the method for preparing it. A water suspension of cellulosic fiber is treated under alkaline conditions with a condensate of epichlorohydrin and dimethylamine. Up to 30 molar percent of the DMA may be replaced by a crosslinking agent such as ammonia or a lower aliphatic diamine. The process may be carried out at room or elevated temperatures. It is practical to add the condensate at one of the later alkaline stages of a bleaching process; e.g., an alkaline extraction or peroxide stage. This is most preferably done later than any chlorination or hypochlorite stages. The product shows greatly improved retention of acid and other anionic dyes. It also shows superior retention of some pigments and latices without the need for other cationic aids. In some cases a small amount of alum appears to have a synergistic retention effect with the cationic pulp product when used with titanium dioxide and certain anionic latices.

REFERENCES:
patent: 2595935 (1952-05-01), Daniel et al.
patent: 3674725 (1972-07-01), Aitken et al.
patent: 3697370 (1972-10-01), Nagy
patent: 3854970 (1974-12-01), Aitken
patent: 3930877 (1976-01-01), Aitken
patent: 4029885 (1977-06-01), Buikema
patent: 4146515 (1979-03-01), Buikema et al.
patent: 4268352 (1981-05-01), Cosper et al.

Affiliated with

Also associated with

Rating

Cationic cellulose product and method for its preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cationic cellulose product and method for its preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cationic cellulose product and method for its preparation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1157019