摘要 |
The invention concerns a hydroxypropyl starch ester (HPS ester), compositions containing it, and a process for the preparation thereof. According to the invention, the molar substitution in the HPS ester is 2 at the most and the substitution degree in the ester group is at least 1. The HPS ester is prepared by hydroxypropylating a starch-containing base material in an aqueous alkanol medium. A starch component can be prepared of the HPS ester containing 90 to 60 % by weight HPS ester and 10 to 40 % by weight of a plasticizer. Compositions which are suited for, e.g., coating board or paper and for use as a component in labelling adhesives or paint, can be made from the starch component by combining it with auxiliaries known as such within the polymer and plastics technology.
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申请人 |
VALTION TEKNILLINEN TUTKIMUSKESKUS;PELTONEN, SOILI;TIITOLA, PERTTI;VUORENPAEAE, JANI;HAPPONEN, HARRI;TOERMAELAE, PERTTI |
发明人 |
PELTONEN, SOILI;TIITOLA, PERTTI;VUORENPAEAE, JANI;HAPPONEN, HARRI;TOERMAELAE, PERTTI |