Fmc Corporation

Avtex Fibers Inc.

Edward F Orwoll

Borivoj Richard Franko-Filipasic

Vithal C Patel

John A Price

John Francis Start

Donald Hardy, Sr

Robert E Keay

Richard R Boettcher

Carbamates are prepared in one step by reacting an alcohol, phosgene, and an amine in the absence of an acid scavenger.

Preparation of carbamates

3-Methyl-2-butenyl 3,3-dimethyl-4-pentenoate, by-product in the condensation between 3-methyl-2-butene-1-ol and a lower alkyl orthoacetate, can be recycled into the condensation by alkoxylating it with a lower alkyl alcohol or orthoacetate in the presence of a basic ester exchange catalyst.

By-product recycling process

Desensitized benzoyl peroxide compositions

Flame-retarded regenerated cellulose filaments and filamentary articles having dispersed therein polymeric phosphazenes with P-O-P oxygen linkages that are prepared through the condensation of alkyl esters of phosphorus acids with acid halides of phosphorus acids with elimination of alkyl halides; and method for their preparation.

Flame retardant regenerated cellulose filaments containing cross-linked

Preparing mixed phosphate ester compositions consisting essentially of 10% to 19% tributyl phosphate, 62% to 80% dibutyl phenyl phosphate, and 10% to 19% butyl diphenyl phosphate which comprises forming a first reaction product by reacting phosphorus oxychloride with phenol in a molar ratio of 1:0.8 to 1.0 until less than 1% unreacted phenol is present in the reaction mixture, reacting the first reaction product with excess n-butanol at a temperature below 35.degree. C to prepare a crude mixed phosphate ester composition comprising tributyl phosphate, dibutyl phenyl phosphate and butyl diphenyl phosphate, and purifying the crude composition leaving a substantially pure mixed phosphate ester composition.

Process for preparing mixed phosphate ester compositions

A new class of polymeric phosphazenes with P--O--P oxygen linkages useful in rendering rayon flame retardant are prepared through the condensation of alkyl esters of phosphorus acids with acid halides of phosphorus acids with elimination of alkyl halides.

Polymeric phosphazenes and process for preparation

A novel process consisting of reacting a phosphonitrilic chloride with an alcohol or alkoxide to 12 carbon atoms to produce a partially esterified phosphonitrilic chloride, removing impurities from the chloroester and heating the ester to form a condensed polymeric phosphazene with P-O-P oxygen linkages. This new class of polymer phosphazenes, with P-O-P oxygen linkages, is unusually efficacious in rendering rayon flame-retardant.

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Langhorne, PA, United States of America

Edward F Orwoll