Vesiculated polymer particles

US7572846B2 · kind B2 · utility

Assignee

• Freeworld Coatings Capital · ZA

Inventors

• John Francis Engelbrecht · Krugersdorp, ZA
• Deon De Wet-Roos · Krugersdorp, ZA
• Albertus Christiaan Smit · Krugersdorp, ZA
• Boyd Cooray · Krugersdorp, ZA

Key dates

• Filing date: Sep 23, 2003
• Grant date: Aug 11, 2009
• Expiry date: May 22, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F292/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Vesiculated polymer particles and a method of manufacture thereof, are suitable for the beneficial replacement of titanium dioxide pigments and extenders amongst others, and have improved opacity, whiteness, scrub resistance and water resistance due. The manufacturing process exhibits effective control of particle size and particle size distribution.