Abstract: Alkanediol bisacetals useful as surface-active substances for industrial purposes, in particular in washing and cleaning agents, have the formula I ##STR1## where R.sup.1 is alkyl or alkenyl of from 6 to 30 carbon atoms,A is 1,2-alkylene of from 2 to 4 carbon atoms,m is from 0 to 50,within each of the pairs R.sup.1, A and m the meanings being identical or different, andn is from 2 to 20.
Type:
Grant
Filed:
April 20, 1992
Date of Patent:
April 27, 1993
Assignee:
BASF Aktiengesellschaft
Inventors:
Richard Baur, Helmut Guembel, Alfred Oftring, Johannes Perner, Gerhard Wolf
Abstract: A chemically and optically pure B-halodiiso-2-ethylapopinocampheylborane of essentially 100% ee represented by the formula: ##STR1## wherein B is borane and X is halo, and a process of using such for the production of optically active alcohols.
Abstract: A process of recovering monoalkylbenzene and pure 1,3,5-trialkylbenzene from an isomeric mixture containing dialkyl- and trialkylbenzenes. The process comprises transalkylating a monocyclic aromatic compound with a mixture of dialkyl- and trialkyl-benzenes in the presence of an acidic mordenite zeolite under conditions such that monoalkylbenzene and predominantly 1,3,5-trialkylbenzene are formed. 1,3,5-trialkylbenzene is isolated in pure form from a mixture of the same and 1,2,4- and/or 1,2,3-trialkylbenzene by use of a dealuminated zeolite Y adsorbent.
Type:
Grant
Filed:
August 19, 1991
Date of Patent:
April 13, 1993
Assignee:
The Dow Chemical Company
Inventors:
Guo-shuh J. Lee, Michael M. Olken, Juan M. Garces, Garmt R. Meima
Abstract: Monoalkylated benzene such as ethylbenzene and cumene or monoalkylated substituted benzene are produced by alkylation in the presence of an acidic mordenite zeolite catalyst having a silica/alumina molar ratio of at least 40:1, preferably 160:1. In a subsequent, optional process, the polyalkylated benzene or polyalkylated substituted benzene produced in the alkylation is transalkylated in the presence of an acidic mordenite zeolite catalyst.
Type:
Grant
Filed:
June 21, 1991
Date of Patent:
March 30, 1993
Assignee:
The Dow Chemical Company
Inventors:
Guo-shuh J. Lee, Juan M. Garces, Garmt R. Meima, Matheus J. M. van der Aalst
Abstract: Disclosed herein are polydiphenyldiacetylenes having the following repeating unit (III): ##STR1## (wherein R.sup.1 denotes a hydrogen atom or a methoxy group; R.sup.2 denotes a hydrogen atom, a methoxy group or a methylamino group; R.sup.3 denotes a hydrogen atom or a trifluoromethyl group; and R.sup.4 denotes a hydrogen atom or a trifluoromethyl group; provided that R.sup.1 is not a hydrogen atom when R.sup.2 is hydrogen atom, and R.sup.3 is not a hydrogen atom when R.sup.4 is hydrogen atom).
Type:
Grant
Filed:
August 9, 1991
Date of Patent:
March 23, 1993
Assignees:
Toda Kogyo Corp., The Agency of Industrial Science and Technology
Abstract: A monoalkylether of dihydric phenol compound is produced by bringing a feed gas comprising a mixture gas of a dihydric phenol compound with a monohydric alcohol compound into contact with an active catalyst component comprising at least one member selected from phosphorus compounds, and mixtures and reaction products of phosphorus compounds with boron compounds and carried on an inert solid carrier consisting of, for example, .alpha.-alumina, .gamma.-alumina, activated carbon or titania grains, and preferably having a pore volume of 0.1 ml/g or more and a specific surface area of 1 m.sup.2 /g or more, at a temperature of 200.degree. C. to 400.degree. C., and collecting the resultant reaction product from the reaction mixture.
Abstract: A process for the preparation of 1,1'-oxy-bis(3-trifluoromethyl-4-nitrobenzene) which comprises reacting a compound of the formula ##STR1## where X is F, Cl, Br or I; with an inorganic base selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, and alkali metal bicarbonates, in the presence of a catalytic quantity of a benzoate catalyst. In addition, benzoate esters of 4-nitro-3-trifluoromethylphenol may be isolated.
Abstract: Cyclobutanols of the formula ##STR1## wherein P is a hydroxy protecting group are useful intermediates in the preparation of antiviral compounds.
Abstract: An improved process for preparing either optically pure enantiomer of the bark beetle pheromones ipsenol and ipsdienol is provided. The process is also applicable to the condensation of aldehydes of widely varying properties to the corresponding chiral alcohol.
Abstract: The present invention deals with the composition, and application of novel highly branched borate esters, which function as unique oil phases for use in personal care, textile and related applications. The properties of these novel compounds which makes them well suited for these applications is the fact that they are substantive to fibers, hair and skin, are very mild to the skin and eyes. These materials are surprisingly stable to hydrolysis.
Type:
Grant
Filed:
January 11, 1991
Date of Patent:
December 15, 1992
Assignee:
LCE Partnership
Inventors:
Noreen A. Studnicka, J. Michael Clumpner, Anthony J. O'Lenick, Jr.