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:
Feb. 22, 1994
Filed:
Nov. 04, 1992
Applicant:
Inventors:
Catia Bastioli, Novara, IT;
Vittorio Bellotti, Fontaneto D'Agogna, IT;
Luciano Del Giudice, Milan, IT;
Roberto Lombi, Novara, IT;
Angelos Rallis, Novara, IT;
Assignee:
Spherilene S.r.l., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; C08L / ;
U.S. Cl.
CPC ...
521 841 ; 524 47 ; 524 52 ; 524 53 ; 106210 ; 106211 ; 106212 ; 106213 ; 106214 ;
Abstract
Expanded articles of biodegradable plastics are produced by the extrusion of a composition including starch, a polymer compatible with starch, in particular, an ethylene-acrylic acid copolymer and/or ethylene-vinyl alcohol copolymer, and an expanding agent. Preferably use is made of sodium bicarbonate as expanding agent in the presence of a polymeric acid.