Hoechst Aktiengesellschaft

Clariant Corporation

Cassella Aktiengesellschaft

Martin Hille

Roland Bohm

Helmut Diery

Heinz Wittkus

Friedrich Staiss

Manfred Hofinger

Ulrich Riegel

Friedrich Engelhardt

Rainer Kupfer

Willibald Bose

Frank Weinelt

Hans-Walter Bucking

Werner Ritschel

Karl H Wallhausser

Wolfgang Wagemann

Gerd Reinhardt

Werner Reimann

Fritz Engelhardt

Reinhold Deubel

Siegfried Billenstein

Joachim Weide

Lorenz Heiss

Norbert Wester

Fritz J Gohlke

Dieter Ulmschneider

Werner Antwerpen

Hans Jurgen Scholz

Wllibald Bose

Wolfgang Friede

Bernd Windhausen

The present invention relates to environmentally friendly diesel fuel, containing natural, liquid triglycerides of natural or animal origin, such as rapeseed or soybean oil, and acetals of the formula (I) or (II) ##STR1## in which the substitutents have the meaning defined in the description. This diesel fuel is biodegradable and free of sulfur, nitrogen and aromatics.

Environmentally friendly diesel fuel

The invention relates to mixtures comprising acetals and oleophilic alcohols and/or oleophilic esters which are suitable for the preparation of inverted emulsion drilling muds and emulsion drilling muds. They completely or partly replace here the base oils, diesel oil, purified diesel oil, white oil, olefins and alkylbenzenes known to date. The invention furthermore relates to the use of the inverted emulsion drilling mud and emulsion drilling mud as claimed in claim 10.

Use of acetal-containing mixtures

Acetals are used as a mineral oil substitute, oil component or base oil in invert-emulsion drilling muds, emulsion drilling muds, engine oils, gearbox oils, lubricating oils and also metal-working fluids, coolants, cooling lubricants and hydraulic fluids. As compared with conventional mineral oils, acetals show good biodegradability and are less toxic.

Use of acetals

The present invention relates to the the use of water-soluble copolymers based on acrylamidoalkylenesulfonic acid, vinylacetamide and, if appropriate, other monomers, comprising

Use of a water-soluble copolymers based on acrylamidoalkylenesulfonic

The water-soluble copolymer comprises 5-90% by weight of groups of the formula ##STR1## in which R.sup.1 is hydrogen or methyl, R.sup.2 is C.sub.2 -C.sub.10 -alkylene, and Me is ammonium or an alkali metal, 5-90% by weight of groups of the formula

Water-soluble copolymers useful in drilling fluids

The invention relates to the use of oxyalkylated fatty amines and fatty amines of the formula (I) ##STR1## in which A is a radical of the formula (II)-(V) ##STR2## in which R is C.sub.6 -C.sub.22 -alkyl, x is a number from 5 to 40,

Process of inhibiting corrosion, demulsifying and/or depressing the pour

In the process described, esterification products of an oxyalkylated primary fatty amine and 0.5 to 1.5 mol per mole of fatty amine of a simple dicarboxylic acid or of a dicarboxylic acid from the group comprising dimeric fatty acids are employed as emulsion breakers.

Process for separation of petroleum emulsions of the water-in-oil type

The novel glycidyl ether addition products are obtained by esterification of a diol compound, selected from the group comprising linear oxyalkylates and other amine-free aliphatic diols, and an addition compound of polyether block polymers and glycidyl ethers with dicarboxylic acids. They are advantageously employed for demulsifying crude oil emulsions.

Esterified glycidyl ether addition products and their use

A process for the separation of crude oil emulsions of the water-in-oil type In the novel process addition products made from certain ethylene oxide/propylene oxide block polymers and certain polyglycidyl ethers of phenol/formaldehyde condensation products are added to the crude oil emulsions.

Process for the separation of crude oil emulsions of the water-in-oil

The microbicidal agents consist esentially of 5 to 50% by weight of the salt of an alkyl-di-guanidine of the formula ##STR1## in which R' and R' denote hydrogen or C.sub.8 -C.sub.18 -alkyl, and R' and R' may not simultaneously be hydrogen, m denotes a number from 2 to 6 and n denotes 0 to 1, 5 to 50% by weight of a quaternary ammonium compound of the formula ##STR2## in which R.sup.1 denotes C.sub.8 -C.sub.22 -alkyl or C.sub.8 -C.sub.22 -alkenyl, R.sup.2 and R.sup.3 denote C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.3 -hydroxyalkyl and R.sup.4 denotes hydrogen or methyl, or R.sup.1 and R.sup.2 denote C.sub.8 -C.sub.12 -alkyl, R.sup.3 denotes C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.3 -hydroxyalkyl and R.sup.4 denotes hydrogen or methyl, X in both cases denotes a number from 1 to 3, preferably from 1 to 2 and in particular 1,5, and A.sup..crclbar. denotes an anion of a carboxylic acid from the group comprising propiionic acid, lactic acid, glycolic acid, tartronic acid, malic acid, tartaric acid, citric acid, maleic acid and benzoic acid, and, as the remainder, water and/or a lower alcohol or a water-soluble glycol.

Microbicidal agents based on alkyl-di-guanidinium salts

Branched polyoxyalkylene copolyesters are described which are prepared by esterifying an oxyalkylated primary fatty amine and an at least trihydric oxyalkylated alkanol or an oxyalkylated polyamine using a dicarboxylic acid or a dicarboxylic anhydride with polycondensation. The novel branched polyoxyalkylene copolyesters are used as demulsifiers for breaking crude oil emulsions.

Branched polyoxyalkylene copolyesters, a process for their preparation,

Branched, quaternary polyoxyalkylene copolyesters are described which are prepared by esterifying an oxyalkylated primary fatty amine and an at least trihydric oxyalkylated alkanol or an oxyalkylated polyamine using a dicarboxylic acid or a dicarboxylic anhydride with polycondensation, and quaternizing the esterification product obtained using ethylene oxide or propylene oxide in the presence of a mineral acid or carboxylic acid. The novel, branched, quaternary polyoxyalkylene copolyesters are used as demulsifiers and corrosion inhibitors in the processing of crude oil emulsions.

Branched, quaternary polyoxyalkylene copolyesters, a process for their

Oxalkylated polyester-amines which are prepared by esterifying, with polycondensation, an oxalkylated primary fatty amine with a diol and with a dicarboxylic acid, are described. These polyester-amines are used as demulsifiers for breaking crude oil emulsions.

Oxalkylated polyester-amines, a process for their preparation and their

Quaternary oxalkylated polycondensates are described; these are prepared by esterifying, with polycondensation, an oxalkylated primary fatty amine with a diol and with a dicarboxylic acid, and oxalkylating the resulting reaction product in the presence of a carboxylic acid. These polycondensates are used as demulsifiers for breaking crude oil emulsion and as corrosion inhibitors in plants for the recovery and treatment of natural gas and crude oil.

Quaternary oxalkylated polycondensates

Cement slurries for deep holes, with a content of copolymers which are composed of 5-95% by weight of groups of the formula ##STR1## in which R.sub.1 is hydrogen or methyl,

Growing community of inventors

Liederbach, Germany

Martin Hille