Akzo Nobel N.v.

Stauffer Chemical Company

Akzo N.v.

Akzo America Inc.

Jeffrey E Telschow

Edward D Weil

Danielle Angrand Bright

John Tomko

William Francis Joyce

Elliot I Band

Fred Jaffe

Alan M Aaronson

Phuong-Nga Trinh

Ralph B Fearing

Walter L Magee, Jr

Danielle A Bright

Maurice O Dery

Edmund J Rumanowski

John Douglas Nowak

Claude B Peterson

Michael Engel

Sandra Urquhart

Alan J Abramson

Biing Ming Su

Johannes Hermanus Boelee

Harold Providence

The present invention relates to a method of removing SOcontaminants from dimethyl sulfate (DMS) by treatment with an oxidizing agent, and to a process for the preparation of odor free fatty acid trialkanolamine esters quaternized with DMS which is substantially free of SOcontaminants.

Removal of residual sulfur dioxide from dimethyl sulfate

The present invention relates to a process for the minimization of volatile organic sulphur byproducts in dimethyl sulfate quaternization of amines made with hypophosphorous acid, which leads to the formation of an odor stable product.

Minimization of volatile organic sulphur byproducts in dimethyl sulfate quaternization of amines made with hypophorous acid

Neopentylene 1-phenylvinyl phosphonate

A process for the formation of a di(hydroxyalkylaryl) aryl phosphate is disclosed which comprises the reaction of an o-alkyl substituted aromatic diol, e.g., an o-alkyl substituted hydroquinone such as o-t-butylhydro-quinone, and monoaryl dihalophosphate, such as monophenyl dichlorophosphate. This process can, in particular, be used to make certain di(hydroxy-o-alkylphenyl) phenyl phosphate compounds, preferably those that are p-hydroxy, such as di(p-hydroxy-o-t-butylphenyl) phenyl phosphate.

Process for making di(hydroxyalkylaryl) aryl phosphate compounds

A process for the synthesis of a hydrocarbylvinyl-1-phosphonic acid hydrocarbyl ester, such as a 1-phenylvinylphosphonic acid dialkyl ester, which utilizes: (a) the base catalyzed addition (preferably using a nonnucleophilic strong organic base) of a hydrocarbyl phosphite, such as a dialkyl phosphite containing no more than about eight carbon atoms in either of its alkyl groups, to an aldehyde or methyl ketone, such as a phenyl ketone, as exemplified by acetophenone, to form a hydrocarbyl 1-hydroxy-1-hydrocarbylphosphonate, such as a dialkyl 1-hydroxy-1-phenylalkylphosphonate compound; (b) the acid-catalyzed esterification (preferably acetylation) of the compound from (a) with an acid anhydride to form an acylated intermediate; and (c) the removal of carboxylic acid (preferably at a temperature of from about 50&deg; C. to about 215&deg; C. under reduced or atmospheric pressure) from the intermediate from (b) to form the desired hydrocarbylvinylphosphonic acid hydrocarbyl ester, such as a 1-phenylvinylphosphonic acid dialkyl ester.

Synthesis of a hydrocarbylvinylphosphonic acid hydrocarbyl ester

Benzene phosphorus dichloride can be prepared by the reaction of benzene and phosphorus trichloride in the presence of a catalytically effective amount of a Friedel-Crafts catalyst, such as aluminum trichloride or ferric trichloride, at elevated temperature, such as from about 200.degree. C. to about 250.degree. C., and superatmospheric pressure, such as no less than the vapor pressure of the components at the chosen reaction temperature, to insure a liquid reaction medium.

High temperature, catalytic Friedel-Crafts synthesis of benzene

Bis(pentaerythritol phosphate alcohol) hydrogen phosphonate is a flame retardant compound. Such a compound can be prepared by the transesterification of a diphenyl phosphite with pentaerythritol phosphate alcohol.

Bis(pentaerythritol phosphate alcohol) hydrogen phosphonate

(Pentaerythritol phosphate alcohol)(cyclic neopentylene glycol) phosphite and phosphonate are disclosed as flame retardant compounds. The first named compound is formed by the reaction of pentaerythritol phosphate alcohol with a neopentylene glycol halophosphite, such as neopentylene glycol chlorophosphite. The (pentaerythritol phosphate alcohol)(cyclic neopentylene glycol) phosphonate is formed by heating (pentaerythritol phosphate ol)(cyclic neopentylene glycol) phosphite.

(Pentaerythritol phosphate alcohol) (cyclic neopentylene glycol)

(Pentaerythritol phosphate alcohol)(aryl) phosphonate compounds may contain from one to three pentaerythritol phosphate alcohol groups, such as bis(pentaerythritol phosphate alcohol)(pentaerythritol phosphate alcohol) phosphonate, and are useful as flame retardants. The analogous phosphite compounds are also disclosed.

Pentaerythritol phosphate alcohol-containing phosphonate and phosphite

A bis(pentaerythritol phosphate alcohol) alkylphosphonate compound, such as one comprising an alkyl group of from about one to four carbon atoms, preferably bis(pentaerythritol phosphate alcohol) methylphosphonate, is a flame retardant compound. Such a compound can be prepared by the transesterification of a diphenyl alkyl phosphonate carrying the desired alkyl group with pentaerythritol phosphate alcohol. An alternative process of preparation comprises the reaction of pentaerythritol phosphate alcohol, a trialkylamine, and an alkylphosphonic dihalide.

Process for preparing bis(pentaerythritol phosphate alcohol)

Bis(pentaerythritol phosphate alcohol) alkylphosphonate

Organophosphorus dihalides can have one of their halogen substituents substituted with an alkyl group from a trialkylaluminum by gradual addition of the latter reagent to the former.

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Tarrytown, NY, United States of America

Jeffrey E Telschow