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:
Mar. 22, 1988
Filed:
Feb. 20, 1986
Applicant:
Inventors:
Rainer Ekman, Turku, FI;
Christer Eckerman, Turku, FI;
Tapio Mattila, Espoo, FI;
Elias Suokas, Espoo, FI;
Assignee:
Kemira Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11B / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
260413 ; 260412 ; 560190 ; 562590 ; 562595 ;
Abstract
The invention relates to a method for converting biopolyesters consisting of straight-chain hydroxyacid monomers containing 10 to 40 carbon atoms, such as suberin and cutin, into a plain mixture of organic acids and their salts containing only a few main components. The depolymerization is carried out according to the invention by oxidizing either with a strong oxidizer or by dehydrating oxidation with strong alkali at elevated temperature.