摘要 |
For converting native starch or starch derivatives into thermoplastic starch , it is proposed that the starch, which is principally responsible for the conversion, be mixed with at least one hydrophobic, biodegradable polymer. This hydrophobic, biodegradable polymer which serves as a plasticising or swelling agent, can be a polymer from the following list: an aliphatic polyester, a copolyester with aliphatic and aromatic blocks, a polyester amide, a polyester urethane, a polyethylene oxide-polymer or a polyglycol and/or mixtures thereof. During the melting process, when mixing the starch, such as native starch in particular or derivatives thereof, with the hydrophobic, biodegradable polymer as a plasticising or swelling agent, to homogenise the mixture, the water content is to be reduced to < 1 wt. % in relation to the weight of the mixture.
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申请人 |
BAYER AG;BIOTEC BIOLOGISCHE NATURVERPACKUNGEN GMBH & CO. KG |
发明人 |
SCHMIDT, HARALD;LOERCKS, JURGEN;GRIGAT, ERNST;TIMMERMANN, RALF;POMMERANZ, WINFRIED;SCHULZ-SCHLITTE, WOLFGANG |