Abstract
PCT No. PCT/FI96/00402 Sec. 371 Date Jan. 12, 1998 Sec. 102(e) Date Jan. 12, 1998 PCT Filed Jul. 10, 1996 PCT Pub. No. WO97/03120 PCT Pub. Date Jan. 30, 1997The invention relates to a process for thermoplasticizing starch, a melt-processible polymer composition, which contains a starch-based component and a thermoplastisized polymer component, and a method for preparating 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 language | English |
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Patent number | US6011092 |
IPC | C08L 101/ 16 A I |
Priority date | 10/07/1996 |
Publication status | Published - 4 Jan 2000 |
MoE publication type | H1 Granted patent |
Keywords
- starch
- thermoplastics