05462982 is referenced by 45 patents and cites 34 patents.

In order to prepare a starch-based composition usable for the production of articles of biodegradable plastics material, a starch is mixed in a heated extruder with a high-boiling plasticizer and a destructuring agent for a time sufficient to cause the starch to be destructured, in dependence on the destructuring agent used, at a temperature below the boiling point of the plasticizer used and between 120.degree. and 170.degree. C.

The composition thus obtained is particularly suitable for the formulation of polymer mixtures with polymers which have relatively high melting points, since it can be processed at temperatures higher than 120.degree. C. and is suitable for extrusion at low pressure with these polymers. In particular, compositions thus obtained and mixed with polyvinyl alcohol and/or ethylene vinyl alcohol are suitable for the formation of films by blow-extrusion, since they have the desired characteristics of mechanical strength and resistance to tearing and perforation, or for the formation of articles finished by injection moulding, thermoforming or blowing.

Title
Method for the preparation of destructured-starch-based compositions and compositions produced thereby
Application Number
530916
Publication Number
5462982
Application Date
October 28, 1994
Publication Date
October 31, 1995
Inventor
Italo Guanella
Romentino
IT
Gianfranco Del Tredici
Sesto Calende
IT
Roberto Lombi
Novara
IT
Catia Bastioli
Novara
IT
Agent
Bryan Cave
Assignee
Novamont S p A
IT
IPC
C08L 3/02
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