Basf Aktiengesellschaft

Christos Vamvakaris

Karin H Beck

Heinrich Hartmann

Gerhard Wagenblast

Albert Hettche

Manfred Patsch

Bernhard Albert

Gerold Braun

Klaus Glaser

Karl-Heinz Etzbach

Helmut Reichelt

Frank Meyer

Georg Zeidler

Chung-Ji Tschang

Wolfram Dietsche

Juergen Kipper

Juergen Beck

Bernhard H Nowakowsky

Peter Neumann

Walter Denzinger

Knut Oppenlaender

Rolf Fikentscher

Guenter Hansen

Ruediger Sens

Sophia Ebert

Hubert Trauth

Johannes Perner

Thomas Gessner

Wilfried Heide

Norbert Greif

Friedrich-Wilhelm Raulfs

Stefan Weiss

Walter Ziegler

Klaus Lorenz

Reinhold Kohlhaupt

Gerhard Scholz

Guenther Riedel

Wolfgang Mach

Ulrich Kaluza

Richard Mueller

Claudia Kr&auml;h

Bernd Derber

Juliane Krusemann

Dieter Swatzina

Chung-Ji Ischang

The present invention relates to the use of specific phthalocyanines which bear substituents on the basic phthalocyanine structure bonded via methylene groups as markers for liquids, especially mineral oils, to liquids, especially mineral oils which comprise at least one such phthalocyanine as a marker, and also to novel specific phthalocyanines which bear substituents on the basic phthalocyanine structure bonded via methylene groups.

Use of phthalocyanines as marking substances for liquids

Use of compositions containing bisazo compounds for detecting fissures

Phthalocyanine and use of phthalocyanine as a marking agent

Method for marking liquids with at least two marker substances and method for detecting them

Use of compounds from the class of the phthalocyanines, naphthalocyanines, nickel dithiolene complexes, aminium compounds of aromatic amines, methine dyes or azulenesquaric acid dyes which have their absorption maximum in the range from 600 to 1,200 nm and/or a fluorescence maximum in the range from 620 to 1,200 nm, as markers for liquids, a process for detecting markers in liquids, and a detector suitable for this purpose.

Use of compounds which absorb and/or fluoresce in the IR region as

Dye preparations comprising one or more dyes with no water-solubilizing groups in the molecule from the class of the metal complex azo dyes or the metal phthalocyanines and reaction products between from 1 to 50 mol of ethylene oxide and 1 mol of castor oil are useful for coloring granular or pulverulent substrates and for preparing aqueous dye preparations useful in printing inks.

Dye preparations with ethylene oxide-castor oil reaction products

Method for marking mineral oils with amthraquinones

Azo dyes useful for marking mineral oils have the formula ##STR1## where R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,

Oil-soluble phenylazoaniline dyes

Azo dyes of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently denote hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy,

Aniline-based oil-soluble azo dyes

Wood stains contain in addition to a colorant and a solvent at least one stabilizer against the action of light, oxygen and heat on the wood treated with the wood stain, said stabilizer containing at least one structural element of the formula I ##STR1## where X is oxygen or nitrogen.

Stabilizer-containing wood stains

Marked mineral oils containing basic dyes which have at least two, optionally substituted, amino groups and which, on addition of a protogenic acid and, optionally, a metal halide, experience a bathochromic shift of their absorption maximum and an increase in absorbance, and a method of marking mineral oils with basic dyes.

Marked mineral oils and method of marking mineral oils with basic dyes

Specific sulfonamidocarboxylic acids in the form of the alkali metal or alkanolamine salts are used as corrosion inhibitors in aqueous systems.

Use of salts of sulfonamidocarboxylic acids as corrosion inhibitors in

Crosslinked, finely divided, water-absorbing polymers are prepared in a batchwise process by copolymerization of 100 parts by weight of a monomer mixture of acrylic acid or methacrylic acid, each of which is neutralized with from 0 to 100 mol% of an alkali metal or ammonium base,or acrylamide, methacrylamide or N-vinylpyrrolidone with, as a crosslinking agent, from 0.01 to 5 parts by weight of a monomer containing two or more ethylenically unsaturated double bonds in 20-80% by weight aqueous solution in the presence of an initiator in a multistage procedure in a batchwise mixing apparatus wih constant thorough mixing in all stages, in the first stage the aqueous monomer solution being copolymerized at from 45.degree. to 95.degree. C. and under from 0.1 to 0.8 bar with removal of some of the water by distillation, in the second stage the copolymerization being completed at from 100.degree. to 170.degree. C. under a pressure of up to 8 bar, and in the third stage the water content of the resulting finely divided copolymer being decreased to 0.5-10% by weight under reduced pressure.

Batchwise preparation of crosslinked, finely divided polymers

Sulfatobetaines are prepared by reacting an addition compound of sulfur trioxide and a tertiary amine with an alkylene carbonate.

Preparation of sulfatobetaines

Growing community of inventors

Kallstadt, Germany

Christos Vamvakaris