Use of thiourea dioxide in pulp bleaching processes to preserve

Details Use of thiourea dioxide in pulp bleaching processes to preserve Use of thiourea dioxide in pulp bleaching processes to preserve

1979-11-15

1981-01-13

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 87, D21C 912

Patent

active

042447801

ABSTRACT:
Inproved pulp strength and brightness of chemically produced pulp can be obtained by treating the pulp with the addition of 0.05-0.5% based on the weight of the dry fiber of thiourea dioxide in the chlorination or hypochlorite bleaching stages.

REFERENCES:
patent: 2707145 (1955-04-01), Sparrow et al.
patent: 3177111 (1965-04-01), Larsen
patent: 3384534 (1968-05-01), Kindron et al.
patent: 3472731 (1969-10-01), Liebergott et al.
patent: 3481828 (1969-12-01), Turner et al.
patent: 3507743 (1970-04-01), Cartsunis et al.
patent: 3539445 (1970-11-01), Crossland
patent: 3622444 (1971-11-01), Andrews
patent: 3808012 (1967-03-01), Tobar
patent: 4134787 (1979-01-01), Eckert
patent: 4160693 (1979-07-01), Lindahl
Pulp & Paper Magazine of Canada, vol. 72, No. 1, Jan. 1971, pp. 80-84. _

Affiliated with

Also associated with

Rating

Use of thiourea dioxide in pulp bleaching processes to preserve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of thiourea dioxide in pulp bleaching processes to preserve , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of thiourea dioxide in pulp bleaching processes to preserve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2229959