Method for producing polymer coated pigment particles by precipitation

US6924035B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Helmut Auweter · Schifferstadt, DE
• Heribert Bohn · Wattenheim, DE
• Walter Machtle · Ludwigshafen, DE
• Manfred Mielke · Heidelberg, DE
• Rudiger Sens · Ludwigshafen, DE
• Karl Siemensmeyer · Bischofswerda, DE

Key dates

• Filing date: Sep 25, 2001
• Grant date: Aug 2, 2005
• Expiry date: Nov 21, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Described is a process for preparing polymer-enrobed pigment particles, which comprises mixing in the presence of finely dispersed pigment particles a solution of a polymer in a first solvent with a second solvent in which the polymer is substantially insoluble. The pigment particle can be specifically modified by judicious selection of the polymer.