Patent · US Active

Aqueous emulsion of a sizing agent

US9708771B2 · kind B2 · utility

2Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Ingrid Haufe · Dresden, DE
Klaus Moller · Mutterstadt, DE
Attila Kurucz · Parow, ZA

Key dates

Filing date	Feb 24, 2014
Grant date	Jul 18, 2017
Priority date	—
Expiry date	Feb 24, 2034

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/72
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method of preparing an aqueous emulsion of a sizing agent for use in a papermaking process comprising, emulsifying the sizing agent into an aqueous liquid, in which an aqueous dispersion of a water-soluble polymer of N-vinylformamide and/or N-vinylacetamide units is added to either the sizing agent or the aqueous liquid before, during or after emulsification, wherein the dispersion contains, based on 100 parts by weight of water, (A) from 0.1 to 80 parts by weight of a water-soluble polymer containing N-vinylformamide units and/or N-vinylacetamide units, and (B) from 0.02 to 50 parts by weight of at least one polymeric dispersant.

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