Liquid crystal copolymer containing alkoxy-substituted para-phenylene terephthalate groups

US5389286A · kind A · utility

Assignee

• University of Massachusetts Amherst · US

Inventors

• Ashok Tendolkar · Aurangabad, IN
• Sridevi Narayan · Amherst, US
• Simon W. Kantor · Agawam, US
• Robert W. Lenz · Hochdorf-Assenheim, DE

Key dates

• Filing date: Oct 8, 1992
• Grant date: Feb 14, 1995
• Expiry date: Oct 8, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L67/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Random and block copolyesters which are liquid crystalline can be formed containing: (a) alkoxy-substituted para-phenylene terephthalate groups (i.e., derived from an analogously substituted hydroquinone reagent); and (b) alkylene-terephthalate groups (e.g., where the alkylene moiety contains 2 to 10 carbon atoms).