Low-evaporation polyester resins

US5132343A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Zwecker · Weinheim, DE
• Holger Schreiner · North Duke Street, DE

Key dates

• Filing date: Oct 9, 1990
• Grant date: Jul 21, 1992
• Expiry date: Oct 9, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/141
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Stable, low-evaporation unsaturated polyester resins contain an ethylenically unsaturated polyester, styrene as comonomer, paraffins for preventing styrene evaporation and a pyrogenic silica with both hydrophilic and hydrophobic end groups.