Cellulose ethers containing 2-propenyl groups and their use as protecting colloids during polymerisations

Water-soluble, nonionic cellulose ethers of the (hydroxy)alkyl cellulose groups with an average degree of polymerisation of less than 9000 and an average of 0.01-0.04 2-propenyl groups/anhydroglucose unit, are new. Also claimed are aqueous dispersions obtained by free radical polymerisation of ethyl...

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Hauptverfasser:	DOENGES, REINHARD, EHRLER, RUDOLF, WURM, HORST
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS POLYSACCHARIDES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:	Water-soluble, nonionic cellulose ethers of the (hydroxy)alkyl cellulose groups with an average degree of polymerisation of less than 9000 and an average of 0.01-0.04 2-propenyl groups/anhydroglucose unit, are new. Also claimed are aqueous dispersions obtained by free radical polymerisation of ethylenically unsaturated monomers in aqueous emulsion in the presence of 0.2-5.0 wt.% water-soluble, nonionic cellulose ethers with respect to monomers.