Partial ester release agents for plastics

US4962145A · kind A · utility

Assignee

• Neynaber Chemie GmbH · DE

Inventors

• Kurt Worschech · Loxstedt, DE
• Erwin Fleischer · Bremerhaven, DE
• Peter Wedl · Loxstedt, DE
• Frido Loeffelholz · Bremerhaven, DE
• Ernst-Udo Brand · Bremerhaven, DE

Key dates

• Filing date: Dec 9, 1988
• Grant date: Oct 9, 1990
• Expiry date: Dec 9, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/103
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Partial esters of saturated, linear C.sub.22 -C.sub.34 -monocarboxylic acids with polyols containing at least 3 carbon atoms and at least 2 hydroxyl groups are provided. The partial esters contain on average at least 1 free hydroxyl group and are generally obtained as mixtures of partial esters of at least 2 of said C.sub.22 -C.sub.34 -monocaroxylic acids. Particularly contemplated are partial esters based on montanic acids. The partial esters exhibit excellent release effects and transparency properties when used as release agents for plastics based on PVC or PVC copolymers.