Uudet polysakkaridi-pohjaiset pigmentit ja täyteaineet

Particles of a polysaccharide derivative, having at least one substituent with conjugated unsaturated bonds and exhibiting an index of refraction in excess of 1.50 and a method for the production thereof. In the method, the raw-material is suspended in an organic solvent to form a suspension, which...

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Main Authors MIKKONEN, HANNU, HYVÄRINEN, SARI, KOIVUNEN, KIMMO, PUTKISTO, KAISA, PELTONEN, SOILI
Format Patent
LanguageFinnish
Swedish
Published 15.05.2014
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:Particles of a polysaccharide derivative, having at least one substituent with conjugated unsaturated bonds and exhibiting an index of refraction in excess of 1.50 and a method for the production thereof. In the method, the raw-material is suspended in an organic solvent to form a suspension, which is contacted with an organic reactant comprising a residue with conjugated unsaturated bonds; the raw-material and the organic reactant are reacted to form a derivative exhibiting ester or ether bond between the raw-material and the residue with conjugated unsaturated bonds; the polysaccharide derivative is dissolved in a solvent to form a solution; and the solution is contacted with a non-solvent to precipitate particles of the polysaccharide derivative. The invention provides lightweight, optically improved organic pigments and fillers based on renewable resources and which are recyclable by combustion or composting.
Bibliography:Application Number: FI20080006261