Alkenyl methyl hydroxypropyl cellulose ethers and a process for their production
AssigneeWolff Walsrode AG
InventorJorn Breckwoldt
Life of this patent
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Abstract
New alkenyl methyl hydroxypropyl cellulose ethers have an average degree of substitution DS with methyl groups of 1.5 to 2.9, a molar degree of substitution MS with hydroxypropyl groups of 1.4 to 1.9 and an average degree of substitution DS with alkenyl groups of 0.05 to 1.
Claims6
A polymerizable methyl hydroxypropyl cellulose ether having an average methyl group degree of substitution DS of 1.5 to 2.9, a hydroxypropyl group molar degree of substitution MS of 1.4 to 1.9 and containing polymerizable alkenyl groups selected from the group consisting of ##STR3## the ether being soluble in cold water, insoluble in hot water and soluble in at least one of alcohols, ethers, acids, chlorinated hydrocarbons, amines, amides, sulfur-containing organic solvents, and aromatic hydrocarbons in conjunction with aliphatic alcohols.
Dependencies are inferred from the claim text.