Patent · US Active

Pulp composition for paper and solid board production

US8454799B2 · kind B2 · utility

4Cited by

2References

9Claims

0Family size

Assignee

BASF SE

Inventors

Christian Jehn-Rendu · Orange, FR
Hans-Georg Lemaire · Schifferstadt, DE
Oliver Koch · Eppelheim, DE
Tilo Habicher · Speyer, DE
Sylke Haremza · Neckargemünd, DE
Markus Hoffmann · Wolfschlugen, DE

Key dates

Filing date	May 4, 2011
Grant date	Jun 4, 2013
Priority date	—
Expiry date	May 4, 2031

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/18
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a novel pulp composition for paper or solid board production comprising an oxidized recovered paper pulp and/or an oxidized mechanical pulp into which from 1 to 500 mmol of carboxyl groups per kg and from 1 to 200 mmol of aldehyde groups per kg have been introduced by oxidation. The invention also relates to paper and solid board based on such a pulp composition and also to a process for producing such paper or solid board. The invention also relates to the use of oxidized recovered paper pulp and/or oxidized mechanical pulp for improving the retention and drainage properties of a pulp suitable for producing paper or solid board. The invention further relates to the use of oxidized recovered paper pulp and/or oxidized mechanical pulp for improving, i.e., increasing, the dry strength of paper and solid board.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.