Henkel Kommanditgesellschaft Auf Aktien

Irmhild Goebel

Uwe Ploog

Guenter Uphues

Manfred Petzold

Wolfgang Becker

Walter Guhl

Hans-Josef Wieser

Karl Mahall

A process for washing fat- or dye-soiled materials involving: (a) providing a fat- or dye-soiled material; (b) providing an aqueous detergent-containing liquor; (c) contacting the fat- or dye-soiled material with the aqueous detergent-containing liquor, thus forming a washed material and wash wastewater; (d) providing a source of rinse water; (e) rinsing the washed material with the rinse water, at least once, thus forming rinsed material and rinse wastewater; (f) collecting both the wash and rinse wastewater; (g) chemically pretreating the collected wash and rinse wastewater by contacting it with a compound selected from the group consisting of a demulsifier, an oxidizing agent and mixtures thereof to form waste particles; (h) mechanically removing the waste particles from the collected wash and rinse wastewater by flotation or sedimentation to form prepurified wash and rinse wastewaters; (i) biologically treating the prepurified wash and rinse wastewater by introducing it into a fixed-bed reactor containing activated sludge to form a mixture of treated wastewater and sludge; (j) separating the treated wastewater from the sludge; and (k) recirculating the treated wastewater back into the aqueous detergent-containing liquor, the rinse water, or both.

Washing process with waste water recycling

Quaternary ammonium phosphates produced by reacting a dicarboxylic acid with an alkoxylated tertiary amine to prepare an amino-functional polyester, mixing the polyester in the presence of water with a phosphoric acid ester, and reacting the mixture with an alkylene oxide at elevated pressure and temperature. The quaternary ammonium phosphates are useful as anti-static agents for textile fiber materials.

Quaternary ammonium phosphates based on amino-functional polyesters

Hydroxysulfobetaines having the formula ##STR1## wherein Y represents two to five substituted nitrogens connected by --(CH.sub.2).sub.m -- groups, selected from the group consisting of ##STR2## WITH THE PROVISO THAT AT LEAST ONE OF Y is B); R.sub.1 is an alkyl and R.sub.2 is a member selected from the group consisting of hydrogen and alkyl, where the sum of the carbon atoms in R.sub.1 + R.sub.2 is from 9 to 22; R.sub.3 is a member selected from the group consisting of hydrogen, hydroxyethyl and alkyl having from 1 to 5 carbon atoms; R.sub.4, R.sub.5 and R.sub.6 are individually members selected from the group consisting of hydroxyethyl and alkyl having from 1 to 5 carbon atoms; R.sub.7 is a member selected from the group consisting of ##STR3## and R.sub.4 ; X.sup..crclbar. is a member selected from the group consisting of --(CH.sub.2).sub.n -- SO.sub.3.sup..crclbar. and --CH.sub.2 -- CH(OH) -- CH.sub.2 -- SO.sub.3.sup..crclbar. ; m is an integer from 2 to 6; n is an integer from 1 to 4; (anion).sup..crclbar. represents an anionic group; and (cation).sup..sym. represents a cationic group, as well as the method of making fiber materials antistatic by applying an above hydroxysulfobetaine as well as hydroxycarbobetaines thereto.

Hydroxysulfobetaines and their use in antistatic finishing of synthetic

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Duesseldorf, Germany

Irmhild Goebel