Wolff Walsrode Ag

Bayer Aktiengesellschaft

Wilhelm Oppermann

Werner Lange

Klaus Balser

Bernd Schriewer

Ren&eacute; Kiesewetter

Friedrich-Karl Lampert

Helwig Tuebner

J&ouml;rn-Bernd Pannek

Helwig Teubner

This invention relates to a process for producing a substantially fiber-free carboxymethyl cellulose which predominantly exhibits elastic properties, to the use thereof as a superabsorbent material, and to the use thereof as an adjuvant substance for achieving suitable rheological and water retention properties for the cosmetics, pharmaceutical and food sectors, and for industrial applications, e.g. as an additive for coating materials, for the sealing of cables and for use in tunnelling and in civil and underground engineering.

Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereof

A process for the production of hydroxypropyl starch wherein the starch is etherified in the presence of a small amount of water with an excess of propylene oxide which hydroxypropyl starch is used as plaster additive.

Process for the production of hydroxypropyl starch

A process for the production of hydroxyethyl methyl cellulose having a flocculation point of at least 100.degree. C. by carrying out the alkalization and hydroxyethylation of the cellulose in liquid methyl chloride.

Process for the production of hydroxyethyl methyl cellulose

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Bomlitz, Germany

Wilhelm Oppermann