Composite compositions from graft polymerized rigid fillers

US4026849A · kind A · utility

Assignee

• The United States of America, as represented by the Secretary of Agriculture · US

Inventors

• Edward B. Bagley · Morton, US
• George F. Fanta · Peoria, US
• William M. Doane · Morton, US
• Lewis A. Gugliemelli · East Peoria, US
• Charles R. Russell · Peoria, US

Key dates

• Filing date: Oct 3, 1975
• Grant date: May 31, 1977
• Expiry date: Oct 3, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L101/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Filled composite plastics are prepared, which consist entirely of a rigid filler which has been graft polymerized with a thermoplastic polymer. The conventional thermoplastic matrix has been eliminated. When the rigid filler is a polysaccharide, such as starch, a product with improved biodegradability is produced. Also, valuable petroleum reserves are conserved, since the polysaccharide portion serves as an extender for the petroleum-based polymer.