公开(公告)号：US3520813A

公开(公告)日：1970-07-21

申请号：US3520813D

申请日：1966-11-03

Applicant: BETZ LABORATORIES

Inventor： HANSEN GERALD D ,  GUTHRIE ELIZABETH A

IPC: C02F5/12 ,  B01D15/00 ,  C02B1/14

CPC classification number: C02F5/125

公开(公告)号：US3878037A

公开(公告)日：1975-04-15

申请号：US37483973

申请日：1973-06-29

Applicant: BETZ LABORATORIES

Inventor： HANSEN GERALD D ,  VARNEY ELIZABETH G ,  DAVIS PHILIP S

IPC: D21C9/10 ,  D21C3/04 ,  D21C3/18

CPC classification number: D21C9/1036

Abstract: The present invention is directed to pulp bleaching processes, and in particular compositions for use in the bleaching process to enhance the efficiency of the process. It was discovered that if a low molecular weight water soluble polymer of acrylic acid, or water soluble salt thereof was added either alone or together with a carboxymethyl cellulose to the bleaching solution, that less bleaching solution was required.

Abstract translation: 本发明涉及纸浆漂白方法，特别是用于漂白方法中用于提高该方法效率的组合物。 发现如果将低分子量水溶性丙烯酸聚合物或其水溶性盐单独或与羧甲基纤维素一起加入到漂白溶液中，则需要较少的漂白溶液。