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:
Jun. 02, 1998
Filed:
Jul. 11, 1996
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
Biodegradable polymer blends comprising of a polylactic acid or a copolymer containing lactic acid as the main constituent, and a polyhydroxyalkanoate or a copolymer containing two or more hydroxyalkanoic acids as the constituents; methods for controlling the rate of biodegradation of a polylactic acid or a copolymer containing lactic acid as the main constituent, by blending as above; methods for manufacturing such aliphatic polyester polymer blends; and methods for molding such polymer blends; are provided. The aliphatic polyester polymer blends obtained in the invention are colorless and clear, and have excellent biodegradabilities, as well as excellent mechanical strengths. The blends can be molded similarly as in conventional thermoplastic resins, so that they can be utilized in many industries, without problems in the waste product treatment after the use. Furthermore, molded products with excellent qualities are obtained from the blends, because of their improved moldabilities.