Abstract: A process for preparing compounds of the formula (II),
where the substituents R1 to R5 are each independently H, CH3, straight-chain or branched C1-C8-alkyl, CH(OC1-C5-alkyl)2, CH(C1-C5-alkyl)(OC1-C5-alkyl), CH2(OC1-C5-alkyl), CH(CH3)(OC1-C5-alkyl), C1-C8-alkoxy, N(C1-C5-alkyl)2, phenyl, substituted phenyl, aryl, heteroaryl, S(C1-C5-alkyl) or a radical Caryl, alkyl, and
the symbols X1 to 5 are each carbon.
Type:
Grant
Filed:
June 13, 2002
Date of Patent:
December 2, 2003
Assignee:
Clariant GmbH
Inventors:
Andreas Meudt, Michael Erbes, Klaus Forstinger
Abstract: The present invention relates to a process for preparing optically active cyanohydrins of the formula (II),
by reacting an aldehyde of the formula (I)
with HCN in a water-immiscible organic solvent in the presence of water, in the absence or presence of a buffer, in the presence of a (R)-hydroxynitrile lyase, where X, Y and Z in formula (II) have the same meaning as in formula (I), independently of each other are identical or different and are H, F, Cl, Br, I, OH, O(C1-C4-alkyl), OCOCH3, NHCOCH3, NO2 or C1-C4-alkyl.
Type:
Grant
Filed:
November 1, 2001
Date of Patent:
November 25, 2003
Assignee:
Clariant GmbH
Inventors:
Bettina Kirschbaum, Goetz Wilbert, Franz Effenberger
Abstract: The invention relates to additives for improving cold-flow and lubricating properties of fuel oils, comprising
A) 5-95% by weight of at least one oil-soluble amphiphile of the formula
in which R1 is an alkyl, alkenyl, hydroxyalkyl or aromatic radical having 1 to 50 carbon atoms, X is NH, NR3, O or S, y is 1, 2, 3 or 4, R2 is hydrogen or an alkyl radical carrying hydroxyl groups and having 2 to 10 carbon atoms and R3 is an alkyl radical carrying nitrogen and/or hydroxyl groups and having 2 to 10 carbon atoms or C1-C20-alkyl, and
B) 5 to 95% by weight of a terpolymer containing from 10 to 35 mol % of structural units derived from the vinyl ester of a carboxylic acid having 2 to 4 carbon atoms, from 1 to 15 mol % of structural units derived from the vinyl ester of a neocarboxylic acid having 8 to 15 carbon atoms, and structural units of ethylene to 100 mol %, having a melt viscosity, measured at 140° C., of from 20 to 10,000 mPas.
Abstract: A process for preparing phenylacetic acid derivatives of the formula (I) by reacting benzyl chlorides of the formula (II)
with a compound of the formula R6OH and with carbon monoxide in a dipolar aprotic solvent in the presence of a catalyst which comprises at least one compound of a transition metal of subgroup VIII of the Periodic Table of the Elements,
where R1, R2, R3, R4, and R5 independently of one another are the following radicals:
a hydrogen or fluorine atom;
a CH2Cl radical;
a HO2CCH═CH—, NC— or CF3— group;
an alkyl, alkoxy or acyloxy radical having in each case 1 to 18 carbon atoms; or
a C6-C18-aryloxy, aryl or heteroaryl radical.
Abstract: The use of cyclic sugar ketones of the formula
in which R1 and R2 are hydrogen, C1-C22-alkyl, C2-C22-alkenyl or phenyl, R3 is C1-C4-alkoxy, phenyl-CH2—O— or a group of the formula
R4 is hydrogen or R3 and R4 together are a group of the formula
and n is zero or 1, as catalysts for peroxygen compounds.
Abstract: The present invention relates to compounds of the formula
in which one, two or three of the radicals R1, R2, R3 and R4 are
where m and n are an integer from 1 to 10, R5, R6, R7 and R8 are, independently of one another, identical or different and are a straight-chain or branched alkyl radical having 1 to 10 carbon atoms, and the remaining radical(s) R1 to R4 are
or —NR9R10, where R9 and R10 are identical or different and are a straight-chain or branched alkyl radical having 1 to 10 carbon atoms,
and X− is an inorganic or organic anion or an equivalent of a multiply charged inorganic or organic anion. The invention further relates to mixtures of substances comprising compounds of the formula (1), to a process for preparing the compounds of the formula (1) and to the use thereof.
Type:
Grant
Filed:
April 30, 2002
Date of Patent:
November 11, 2003
Assignee:
Clariant GmbH
Inventors:
Berthold Schiemenz, Thomas Wessel, Ralf Pfirmann
Abstract: A process for producing coated bleach activator granules in which bleach activator base granules are coated with a coating substance and are simultaneously and/or subsequently thermally conditioned.
Abstract: The invention provides water-soluble polymers preparable by free-radical copolymerization of A) one or more macromonomers containing an end-group capable of polymerization, a hydrophilic moiety based on polyalkylene oxides, and a hydrophobic moiety which comprises hydrogen or a saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic or aromatic (C1-C30)-hydrocarbon radical, and B) one or more olefinically unsaturated comonomers which contain oxygen, nitrogen, sulfur, phosphorus, chlorine and/or fluorine. The polymers are suitable as thickeners, dispersing agents, emulsifiers, suspending agents, stabilizers and/or bodying agents for aqueous preparations, emulsions and suspensions, in particular for cosmetic and pharmaceutical compositions.
Abstract: The invention relates to a stabilized, pulverulent red phosphorus material composed of phosphorus particles whose particle size is not more than 2 mm, and whose surface has been covered with a thin layer of an oxidation stabilizer, wherein the oxidation stabilizer is silver, and also to the use of the same, and to a process for its preparation.
Abstract: Resins useful in methods of breaking oil-water emulsions. The resins obtained by reacting a compound of formula 1 with an aldehyde and alkoxylating, in any order:
wherein X is —NHR1; —COOH; or —CONHR2; and
is ortho—, meta— or para— to X and is a radical of —O—R3; —C(O)R4; —OC(O)R5; —NR6R7; wherein R1-R7 values are defined herein.
Type:
Grant
Filed:
May 14, 2002
Date of Patent:
November 11, 2003
Assignee:
Clariant GmbH
Inventors:
Frank Holtrup, Elisabeth Wasmund, Wolfram Baumgärtner, Michael Feustel