Basf Aktiengesellschaft

Badische Anilin- & Soda-fabrik Aktiengesellschaft

Eckhard Hickmann

Rudolf Kropp

Klaus Ebel

Hans Peter Rath

Martin Fischer

Harald Schwahn

Wolfgang Gunther

Rainer Seele

Ulrich Koehler

Joachim Paust

Hardo Siegel

Reiner Kober

Udo Rheude

Otto Volkert

Juergen Frank

Bernhard Schulz

Heinz-Guenter Oeser

Jochen Schroeder

Beate Trentmann

Eberhard Ammermann

Gisela Lorenz

Rainer Becker

Thomas Zierke

Toni Dockner

Friedrich Linhart

Ludwig Schuster

Klaus Halbritter

Stefan Karbach

Walter Gramlich

Gernot Reissenweber

Heinz Isak

Dietmar Nissen

Herbert Krug

Bjoern Girgensohn

Gerald Lauterbach

Fritz Naeumann

Hubert Smuda

Guenter Wegner

Hardo Stegel

Milan Velic

Mong-Jon Jun

Leander Moebius

Reaction products of polyisobutenes having an average degree of polymerization P of from 10 to 100 and a content E of from 60 to 90% of double bonds which can react with maleic anhydride, E=100% corresponding to the theoretical value for the case where each molecule of the polyisobutene has such a reactive double bond, with oxides of nitrogen or mixtures of oxides of nitrogen and oxygen, are suitable as additives for fuels, in particular for gasoline engines, and for lubricants.

Reaction products of polyisobutenes and oxides of nitrogen or mixtures

Use of reaction products of polyolefins and oxides of nitrogen or

The preparation of .alpha.-carbonylphosphine oxides by oxidizing an .alpha.-hydroxyalkyl phosphine oxide with an organic hydroperoxide or of an organic peroxy acid in the presence of a compound of a Group IV to Group VIII metal in the periodic table, and novel .alpha.-hydroxybenzyl phosphine oxides. .alpha.-Carbonylphosphine oxides are used as photoinitiators for polymerizable compositions.

Preparation of carbonylphosphine oxides

Preparation of .alpha.-carbonylphosphine oxides

A process of preparing symmetric C.sub.40 -carotenoids by reacting a C.sub.15 -triphenylphosphonium salt of the formula ##STR1## and a 2,5-bis(1,1-dialkoxy-2-propyl)-2,5-dihydrofuran to form a reaction product containing a diacetyl and a triphenylphosphonium salt, adding a strong base to the reaction product to convert the triphenylphosphonium salt to a carbenium ion, hydrolyzing the diacetyl to a dialdehyde, subjecting the dialdehyde and the carbenium ion to a Wittig reaction to prepare a Wittig reaction product, and converting the Wittig reaction product to the C.sub.40 -carotenoid by acid treatment.

2,5-bis(1,1-dialkoxy-2-propyl)-2,5-dihydrofurans, the preparation

2,5-bis(1,1-dialkoxy-2-propyl)-2,5-dihydrofurans of the formula I ##STR1## where R.sup.1 and R.sup.2 can be identical or different and can be alkyl of 1 to 4 carbons, the preparation thereof by reaction of 2,5-dialkoxy-2,5-dihydrofurans of the formula II ##STR2## In the presence of protic acids or Lewis acids with an alkyl propenyl ether of the formula III ##STR3## and the use thereof for preparing 2,7-dimethyl-2,4,6-octatrienedial and symmetric C.sub.40 -carotenoids such as .beta.-carotene, canthaxanthin and astaxanthin, are described.

Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R.sup.1 to R.sup.4 are each hydrogen or various radicals.

Polytetrahydrofuran derivatives having terminal aromatic groups

A process is described for the preparation of cis-2-(1H-1,2,4-triazol-1-ylmethyl)-2-(halophenyl)-3-(halophenyl)oxirane I ##STR1## by epoxidizing Z-3-(1H-1,2,4-triazol-1-yl)-2-(halophenyl)-1-halophenyl)propene II, ##STR2## where halogen is in each case fluorine, chlorine or bromine, which comprises reacting the crude product of the epoxidation with one or more reducing agents, which are added to the reaction mixture in a considerable excess over the amount necessary to destroy any peroxide compounds present.

Preparation of

Poly(1,4-butanediol-.omega.,.omega.'-mercaptans) have the general formula

Process for preparing a

A process for preparing .alpha.,.alpha.-dialkoxy ketones of the formula I ##STR1## where R.sup.1 and R.sup.2 are each, independently of one another, hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.20 -cycloalkyl, C.sub.4 -C.sub.30 -cycloalkylakyl, C.sub.9 -C.sub.30 -alkylcycloalkyl, unsubstituted or C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy-, halogen-, C.sub.1 -C.sub.4 -haloalkyl-, C.sub.1 -C.sub.4 -haloalkoxy-, phenyl-, phenoxy-, halophenyl-, halophenoxy- and/or cyano-substituted aryl, C.sub.7 -C.sub.20 -aralkyl or heterocyclyl,

Preparation of .alpha.,.alpha.-dialkoxy ketones

Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R.sup.1 and R.sup.4 are each hydrogen or various radicals.

Polytetrahydrofuran ethers of the formula

Polytetrahydrofuran ethers

N-Oxoazolylmethyloxiranes of the formula I ##STR1## where A and B are identical or different and each is alkyl, cycloalkyl, tetrahydropyranyl, benzyl, norbornyl, naphthyl, biphenyl or phenyl, these radicals being unsubstituted or substituted, and X is CH or N, and fungicides and bioregulators containing them.

N-oxoazolylmethyloxiranes and fungicides and bioregulators containing

Growing community of inventors

Dannstadt-Schauernheim, Germany

Eckhard Hickmann