Brightness improvement of ozone bleached pulps

Details Brightness improvement of ozone bleached pulps Brightness improvement of ozone bleached pulps

Category

D - Textiles, Paper

Subcategory

21

Subsubcategory

C

CPC

8/81

IPC codes

D21C 9/10 (2006.01) D21C 9/16 (2006.01)

Type

Patent

Patent number

CA 1154205

Description

ABSTRACT OF THE DISCLOSURE Use of hydrosulfite in the alkaline extraction stage of oxygen-ozone bleached kraft paper pulp results in improved brightness and reverted brightness of the pulp.

Application Number

372737

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