公开(公告)号：EP0412089A1

公开(公告)日：1991-02-13

申请号：EP89904291.0

申请日：1989-03-29

Applicant: BEROL NOBEL STENUNGSUND AB

Inventor： EDEBO, Lars ,  SANDIN, Michael

IPC: C10M173 ,  C10N30 ,  C10N40

CPC classification number: C10M173/02 ,  C10M133/08 ,  C10M2201/02 ,  C10M2201/063 ,  C10M2201/087 ,  C10M2207/123 ,  C10M2207/124 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2207/14 ,  C10M2207/141 ,  C10M2207/142 ,  C10M2207/22 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/286 ,  C10M2207/34 ,  C10M2209/109 ,  C10M2215/042 ,  C10M2215/22 ,  C10M2215/221 ,  C10M2215/225 ,  C10M2215/226 ,  C10M2215/30 ,  C10M2219/044 ,  C10M2219/10 ,  C10M2219/102 ,  C10M2219/104 ,  C10M2219/106 ,  C10N2210/01 ,  C10N2250/02

Abstract: 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 (I) 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.