C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/18 (2006.01) C08L 67/02 (2006.01) C08L 67/04 (2006.01)
Patent
CA 2309828
A plastic film which is improved in brittleness and not too flexible, has practically nonproblematic properties and heat-sealability nondeteriorated even after the lapse of time, and is degradable in the natural environment. The film comprises a lactic acid polymer and another aliphatic polyester in a weight ratio ranging from 80/20 to 20/80 and is characterized by exhibiting a heat of melting, .DELTA.Hm1, of 35 J/g or less in terms of lactic acid polymer when heated.
On décrit un film plastique dont la résistance à été améliorée. Ce film biodégradable n'est pas trop souple, présente des propriétés quasiment sans problèmes et un thermoscellage résistant à l'usure du temps. Le film comprend un polymère d'acide lactique et un polyester aliphatique dont le rapport en poids est compris entre 80/20 et 20/80. Le film se caractérise en ce qu'il présente une chaleur de fusion DELTA Hm1 de 35 J/g ou moins en ce qui concerne le polymère d'acide lactique chauffé.
Takagi Jun
Terada Shigenori
Marks & Clerk
Mitsubishi Plastics Inc.
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