Water-soluble sulfoethyl cellulose ethers of very high solution quality and a process for their production
AssigneeBayer Aktiengesellschaft
InventorsReinhard Kniewske, Rene Kiesewetter, Klaus Szablikowski
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Abstract
The invention relates to water-soluble sulfoethyl cellulose ethers, more particularly methyl sulfoethyl cellulose ether (MSEC), of very high solution quality, to a process for its production and to the use of these products as thickeners, dispersants or binders.
Claims3
Methyl or ethyl sulfoethyl cellulose having a DS sulfoethyl of about 0.21 to 0.4, a DS methyl or ethyl of about 0.66 to 2.5, a viscosity of 5 to 60,000 mPa.s (as measured in 2% by weight aqueous solution at a shear rate D of 2.5 s.sup.-1 at 20.degree. C.), and having a transmission (as measured on a 2% by weight aqueous solution in a cell having an optical path length of 10 mm with light having a wavelength of .lambda.=550 nm) of more than 95%.
Dependencies are inferred from the claim text.