THERMOPLASTICIZED STARCH COMPONENT AND PROCESS FOR THE PREPARATION THEREOF

Elina Heikkilä (Inventor), Soili Peltonen (Inventor), Minna Malin (Inventor), Jani Vuorenpää (Inventor), Jukka Seppälä (Inventor)

Research output: Patent

Abstract

The invention relates to a process for thermoplastisizing starch, a meltprocessible polymer composition, which contains a starch-based component and a thermoplastisized polymer component, and a method for preparing such a composition. According to the invention the starch component, which contains hydroxyl groups capable of reacting with isocyanate groups, is modified so that it can be dissolved or gelatinized/plastisized in the melt of a hydroxy acid polymer. The starch component is then reacted with a thermoplastic component formed by a hydroxy acid polymer, in particular a lactic acid polymer, in order to produce a melt-processible, biologically degradable starch-based polymer, which can be used as an adhesive and for coating of paper and cardboard products and for preparation of injection moulded and thermoformed articles.

Original languageEnglish
Patent numberCA2226579
IPCC08L 101/ 16 A I
Priority date01/08/1995
Publication statusPublished - 30 Jan 1997
MoE publication typeH1 Granted patent

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