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:
Jan. 12, 2010
Filed:
Jan. 25, 2002
Catia Bastioli, Novara, IT;
Gianfranco Del Tredici, Sesto Calende, IT;
Italo Guanella, Romentino, IT;
Giovanni Floridi, Novara, IT;
Roberto Ponti, Oleggio, IT;
Catia Bastioli, Novara, IT;
Gianfranco Del Tredici, Sesto Calende, IT;
Italo Guanella, Romentino, IT;
Giovanni Floridi, Novara, IT;
Roberto Ponti, Oleggio, IT;
Novamont S.p.A., Novara, IT;
Abstract
A biodegradable mixture obtained by melt mixing polyesters comprising (A) an aliphatic polyester obtained from aliphatic diacids selected from the group consisting of azelaic acid, sebacic acid, brassilic acid, mixtures thereof and mixtures of said acids with aliphatic dicarbossilic acids and/or aliphatic hydroxyacids containing more than 50 mole % of azelaic acid, sebacic acid and brassilic acid, and from aliphatic diols; (B) a polymer of lactic acid in which the concentration by weight of A with respect to (A+B) is in the range of 30 to 60% and in which the sum of the fusion entalpy ΔHand ΔHof the two polyesters in the mixture is greater than the sum of the fusion entalpies ΔHand ΔHof the polyesters prior to melt mixing.