Henkel & Cie G.m.b.h.

Jens Conrad

Harald Schnegelberger

Ferdi Saygin

Hans-Werner Eckert

Gunter Koppensteiner

Hans Werner Eckert

A process for the use of .omega.-Aminocarboxylic acid amides of the formula ##STR1## wherein R is an aliphatic hydrocarbon residue having 10 to 14 carbon atoms, R.sub.1 and R.sub.2 are selected from the group consisting of hydrogen, methyl, --CH.sub.2 --CH.sub.2 OH, --CH.sub.2 --CHOH--CH.sub.3 and --CH.sub.2 --CHOH--CH.sub.2 OH, and m and n are integers from 1 to 10, to prevent the growth of microorganisms including compositions of phosphonate sequestering agents and .omega.-aminocarboxylic acid amides for use in industrial water treatment.

Antimicrobial use of .omega.-aminocarboxylic acid amides

A process for producing an addition product of an epoxy compound with a reaction product of .epsilon.-caprolactam and an N-alkylalkylene diamine, as well as the addition product produced by the process. The process of using these addition products is to prevent the growth of microorganisms in industrial water, by incorporating into said industrial water an antimicrobially effective amount of said addition product, and optionally incorporating into said industrial water a sequestering agent comprising a water-soluble phosphonic acid which forms a complex with a divalent metal, a water-soluble salt of the acid and the mixtures thereof, with the weight ratio of sequestering agent to addition product being 1:10 to 10:1.

Adducts of epoxy compounds and products of reaction of

An improved process for the production of 5-bromo-5-nitro-1,3-dioxane by the acetalization of formaldehyde with 2-bromo-2-nitro-propanediol-1,3 in the presence of concentrated sulfuric acid as a catalyst and recovery of readily crystallizable 5-bromo-5-nitro-1,3-dioxane.

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Hilden, Germany

Jens Conrad