Patent · US Active

Multistage polymer dispersions, processes for preparing them, and use thereof

US8754151B2 · kind B2 · utility

3Cited by

20References

16Claims

0Family size

Assignee

BASF SE

Inventors

Sebastian Roller · Mannheim, DE
Ekkehard Jahns · Weinheim, DE
Hans-Juergen Denu · Lampertheim, DE

Key dates

Filing date	Dec 21, 2011
Grant date	Jun 17, 2014
Priority date	—
Expiry date	May 14, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D141/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being −30 to 0° C. and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula Iin which the variables have the following definitions:

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