Patent · US Active

Use of multi-stage polymerizate dispersions to coat metal sheets

US9617447B2 · kind B2 · utility

0Cited by

3References

13Claims

0Family size

Assignee

BASF SE

Inventors

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

Key dates

Filing date	Jun 4, 2013
Grant date	Apr 11, 2017
Priority date	—
Expiry date	Nov 22, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31692
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The present invention relates to the use of aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase and having 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:n=0 to 2,R1, R2, R3=independently of one another hydrogen or methyl group,X═O or NH,Y═H, alkali metal or NH4,to coat metal sheets.

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