Berol Kemi Ab

Berol Nobel Stenungsund Ab

Berol Kemi Ag

Lars Edebo

Stig Allenmark

Magnus Lindstedt

Michael Sandin

The process of disinfecting at least one of food, human beings, animals and products to be brought in contact with same to combat microorganisms includes (a) providing a microbicidal composition comprised of an effective amount of at least one microbicide which is hydrolyzable at a pH-value ranging from about 6 to about 8.5 and is a long-chain alkyl ester compound having the general formula: ##STR1## wherein R.sup.I, R.sup.II and R.sup.III are hydrogen or lower alkyl groups having 1 to 4 carbon atoms, R.sup.IV is a long-chain alkyl group having 10 to 18 carbon atoms, R.sup.V is hydrogen or a group having the formula R.sup.VI N.sup.+ H.sub.3, wherein R.sup.VI is an alkylene group having 3 to 4 carbon atoms, A is a monovalent counter ion, and n is a number of cationic groups in the long chain-alkyl ester compound; and (b) exposing microorganisms to the microbicidal composition to inactivate the microorganisms. The compound may then be detoxicated by exposing it to a medium having a pH-value ranging from about 6 to about 8.5 to hydrolyze the ester bond and reduce the content of the compound to innocuous levels.

Method for disinfection

A metal working process employs a metal working fluid which is water-based and which is one of neutral and basic, the metal working fluid including a corrosion inhibitor in an amount ranging from 0.1 to 10% by weight; a lubricant selected from the group consisting of mono- or dicarboxylic acids or esters thereof having more than 10 carbon atoms, organic phosphate esters containing one or two hydrocarbon groups having 6-18 carbon atoms, and nonionic alkylene oxide adducts having a molecular weight above 400, and mixtures thereof; and an antimicrobially active amount towards fungi and bacteria of at least one alkanolamine compound having the following general formula ##STR1## wherein R is an acyclic hydrocarbon group having 8-14 carbon atoms, A is an hydroxyalkyl group having 2-4 carbon atoms, and X is one of hydrogen. The at least one alkanolamine compound prevents microbial degradation of water-based fluids when included therein.

Water-based metal working fluid containing at least one alkanolamine

A prophylactic agent for controlling venereal diseases. As an active microbicidal component, the agent has an ammonium compound having hydrolyzable ester group.

Article and a prophylactic composition containing a microbicide

Use of a long chain alkyl ester as a temporary microbicide at pH-values from about 6 to about 8.5. The long-chain alkyl ester has the formula ##STR1## where R.sup.I, R.sup.II, and R.sup.III are hydrogen or lower alkyl groups and R.sup.IV is an long chain alkyl group having 10-18 carbon atoms, R.sup.V is hydrogen or a group having the formula R.sup.VI N.sup.+ H.sub.3 where R.sup.VI is an alkylene group having 3-4 carbon atoms, A is a monovalent counter ion and n is the number of cationic groups in the ester compound. The ester exhibits a temporary microbicidal effect due to a hydrolytic reaction. As a consequence the toxic effect on human and animals cells and tissues will be low.

Growing community of inventors

Gothenburg, Sweden

Lars Edebo