Patent · US Active

Aqueous alkylketene dimer dispersions

US8097124B2 · kind B2 · utility

3Cited by

6References

22Claims

0Family size

Assignee

BASF SE

Inventors

Christoph Hamers · Ludwigshafen, DE
Andreas Brockmeyer · Zwingenberg, DE
Markus Schmid · Dietmanns, AT
Klaus Lorenz · Worms, DE
Ulrich Riebeling · Schifferstadt, DE

Key dates

Filing date	Jun 1, 2007
Grant date	Jan 17, 2012
Priority date	—
Expiry date	Aug 10, 2028

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H27/10
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Aqueous alkyl ketene dimer dispersions which comprise at least 15% by weight of an alkyl ketene dimer and at least one water-soluble cationic starch, aluminum sulfate and at least one condensate of naphthalenesulfonic acid and formaldehyde or lignin sulfonic acid or in each case salts thereof, the dispersions comprising, based in each case on alkyl ketene dimer, from 2 to 50% by weight of aluminum sulfate, and in which the dispersions additionally comprise from 0.1 to 5% by weight of a saturated carboxylic acid having 1 to 10 carbon atoms, benzenesulfonic acid, p-toluenesulfonic acid and/or a mineral acid at an aluminum sulfate content of from 2 to 15% by weight, and the use of the dispersions as engine size and surface size for paper and paper products.

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