Patent · US Active

Process for the post-modification of homo and copolymers prepared by controlled free radical polymerization processes

US8658741B2 · kind B2 · utility

1Cited by

6References

21Claims

0Family size

Assignee

BASF SE

Inventors

Ralf Knischka · Neustadt, DE
Ernst Eckstein · Rheinfelden (Baden), DE
Clemens Auschra · Glückstadt, DE
Akira Matsumoto · Yokohama, JP

Key dates

Filing date	Oct 25, 2012
Grant date	Feb 25, 2014
Priority date	—
Expiry date	Oct 25, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/30
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The instant invention pertains to the preparation of polymers or copolymers wherein in a first step a controlled free radical polymerization process is carried out and in a second step the resulting polymer is modified by transesterification reactions. The final modified polymer or copolymer is useful as a dispersant for pigments. Further aspects of the invention are the thus prepared polymers or copolymers, a pigment concentrate containing the polymer or copolymer and a coating material containing the pigment concentrate.

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