Aqueous secondary dispersions

US6962953B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Joachim Probst · Leverkusen, DE
• Martin Melchiors · Leverkusen, DE
• Wieland Hovestadt · Leichlingen, DE
• Michael Sonntag · Odenthal, DE
• Burkhard Kohler · Leverkusen, DE
• Bernhard Jansen · Cologne, DE

Key dates

• Filing date: Jun 18, 2002
• Grant date: Nov 8, 2005
• Expiry date: Dec 26, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31855
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to heat and storage stable vinyl polymer polyol secondary dispersions containing The invention also relates to a process for the preparation of the vinyl polymer polyol secondary dispersions by preparing vinyl polymer resin A) by polymerizing a mixture of ethylenically unsaturated monomers a) in the presence of an initiator b) in a water/solvent mixture and adding at least one amphiphilic polymer B), then at least partly neutralizing and dispersing the resulting product, optionally after the addition of a further amount of water.