Abstract:
The invention relates to a method in a water-base system for at least partially avoiding an expected viscosity decrease or providing a viscosity increase upon a temperature increase, by using a system containing as viscosity-adjusting agents a nonionic cellulose ether in such an amount that the aqueous solution thereof has a viscosity of 10-10,000 cP, measured according to Brookfield LV, 12 rpm at 20 DEG C, and an ionic surface-active compound in an amount of 1-30 mmol per litre of water.
Abstract:
A water-based, neutral or basic metal working fluid containing a corrosion inhibitor, a lubricant and a microbially active amount of at least one alkanolamine compound of general formula (I), wherein R is an acyclic hydrocarbon group having 8-14 carbon atoms, A is a hydroxyalkyl group having 2-4 carbon atoms and X is hydrogen or the group A, where A is as stated above, and a metal working process using said metal working fluid.
Abstract:
The present invention relates to a fuel having the form of a solution and containing 62-94% by weight of ethanol, 2-8% by weight of water and at least 1%, preferably 2-30% by weight of a water-soluble polyalkylene glycol compound which contains 6-50 alkylene oxide units having 2-4 carbon atoms and which has a molecular weight of less than 2500. The fuel is suitable for use in diesel engines.
Abstract:
La présente invention concerne un carburant se présentant sous la forme d'une solution et contenant 62 à 94% en poids d'éthanol, 2 à 8% en poids d'eau et au moins 1%, de préférence 2 à 30% en poids d'un composé de glycol de polyalkylène soluble dans l'eau, contenant 6 à 50 unités d'oxyde d'alkylène comportant 2 à 4 atomes de carbone, et dont le poids moléculaire est inférieur à 2500. Le carburant est adapté pour une utilisation dans des moteurs diesel.
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.
Abstract:
La présente invention se rapporte à un procédé utilisé dans un système à base d'eau et servant à éviter au moins partiellement une baisse de viscosité prévue ou à obtenir un accroissement de viscosité lors d'une augmentation de température, grâce à l'utilisation d'un système contenant comme agents de réglage de la viscosité un éther de cellulose non ionique en quantité telle que la solution aqueuse dudit éther a une viscosité de 10 à 10000 cP, mesurée selon l'indice de viscosité de Brookfield, 12 rpm à 20°C, et un composé tensio-actif ionique dans des proportions de 1 à 30 mmoles par litre d'eau.