The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2005
Filed:
Aug. 05, 2000
Thermoplastic polymer blend produced from thermoplastic starch and method for the production thereof
Werner Berger, Dresden, DE;
Lutz Jeromin, Hilden, DE;
Guntram Opitz, Dresden, DE;
Biop Biopolymer Technologies AG, Dresden, DE;
Abstract
A thermoplastic polymer blend of a bi-continuous phase structure contains thermoplastic starch, at least one synthetic polymer, and a hydrolysis component on PVAc basis. The starch component of the polymer blend has a molecular weight which is only minimally reduced relative to native starch. The thermoplastic polymer blend is produced by reactive extrusion of a mixture of native starch and at feast one hydrophobic polymer with addition of a hydrolyzed component on polyvinyl acetate basis and of lower polyfunctional alcohols and water in the presence of an acidic catalyst. The thermoplastic polymer blend is used for producing injection molded, deep-drawn, or blow-molded parts, foils or raw materials for fibers as well as material for melt film coatings.