Chevron Research Company

Chevron Research & Technology Company

Gar L Woo

Phillip H Parker

Victor P Kurkov

William A Sweeney

Richard S Threlkel

Ralph House

Robert W Campbell

Allen C Ludwig

John M Dale

Lawrence E Santucci

A dimerization process for producing linear and/or mono-branched C.sub.10 to C.sub.28 olefins using dimerization catalysts and new C.sub.10 to C.sub.28 olefins mixtures are disclosed. The C.sub.10 to C.sub.28 olefin product is especially useful for the production of biodegradable alkylbenzene sulfonates detergents and intermediates therefor.

Detergent grade to C.sub.10 to C.sub.28 olefins, (C.sub.10 to C.sub.28

A polysiloxane polymer having pendant aromatic groups that is useful in increasing the viscosity of carbon dioxide. That polymer can be formed by reacting a polysiloxane containing at least one olefinic group with a phenyldialkylsilane. That polymer can be used in a method for recovering oil from an underground oil-bearing earth formation penetrated by an injection well and a producing well, in which method carbon dioxide is injected into the formation to displace oil towards the producing well from which oil is produced to the surface. The viscosity of the carbon dioxide injected into the formatin is increased at least three-fold by the presence of a sufficient amount of the polymer and a sufficient amount of a cosolvent to form a solution of the polymer in the carbon dioxide.

Polysiloxane polymer having pendant aromatic groups useful in enhanced

Disclosed is a process for preparing C.sub.5 to C.sub.18 straight chain .alpha.-olefins from the corresponding internal olefins. The process comprises reacting a C.sub.5 C.sub.18 straight chain olefin reactant with an electrophilic compound containing hydrogen followed by cracking the resulting product.

Process for producing C.sub.5 to C.sub.18 straight chain .alpha.-olefins

Poly-2-pyrrolidone polymer and compositions having improved thermal stability via the capping of at least a portion of the amino and/or carboxy end group of the polymer and processes for preparing such polymers and compositions. The processes are characterized by the reaction of the polymer with alkanolamines and/or alkyl polyamines. The products afford improved melt processability.

Stabilized polypyrrolidone end capped with alkanolamine and process for

Poly-2-pyrrolidone polymer compositions having improved melt processability via the capping of at least a portion of the amino and/or carboxy end group of the polymer and the incorporation therewith of certain epoxide organic isocyanate and/or polyol additive compositions. The melt extrusion of such compositions is also disclosed.

Stabilized polypyrrolidone composition

Sulfur cement-aggregate compositions comprising sulfur cement, aggregate, and an amount of a phosphoric acid effective to improve the resistance of said compositions to freeze-thaw degradation. The compositions are prepared by the admixture of phosphoric acid to the molten composition or a component thereof. The compositions can be used as mortars or concretes depending on the particle size of the principal aggregate component.

Phosphoric acid treated sulfur cement-aggregate compositions

Poly-2-pyrrolidone compositions having improved thermal stability via the incorporation of an organic isocyanate or a thermal precursor thereof and methods of melt-extruding, and especially melt spinning such compositions.

Poly-2-pyrrolidone composition having improved stability and method of

Sulfur foam is produced by reacting molten sulfur with organic protonic acids to obtain an adduct and then reacting the adduct with a polyisocyanate to obtain a foam containing more than 50 weight percent sulfur. Before or after reacting the sulfur with the organic acid, or at the same time, the sulfur can be modified by reacting it with a sulfur-plasticizing material.

Sulfur foam process

A process for producing a sulfur foam containing at least 50 weight percent sulfur which comprises contacting and reacting molten sulfur with phenol or an aliphatic polysulfide to thereby obtain a phenol-sulfur adduct or an aliphatic polysulfide-sulfur adduct and contacting and reacting the adduct with maleic anhydride at a temperature between about 100.degree. and 190.degree. C. to thereby obtain a sulfur foam. In the case of phenol, preferably the phenol is reacted with the sulfur in the presence of a hydroxide base.

Sulfur foam process and product

A process for producing sulfur foam containing at least 50 weight percent sulfur, which comprises: (a) reacting molten sulfur with an organic protonic acid which is reactive with molten sulfur so as to incorporate the organic acid with sulfur to form a sulfur-organic acid adduct containing protonic acid groups; (b) mixing an organic surfactant agent with the adduct to obtain a mixture of adduct and surfactant agent; and then (c) reacting the mixture with a polyisocyanate to obtain sulfur foam.

Sulfur foam

Detergent active materials which are effective in the absence of phosphate builders comprise ring polysulfonated alkylphenoxy alkylols of the formula: ##STR1## in which R is linear alkyl of 16 to 22 carbon atoms, R' is alkylene of 1 to 5 carbon atoms, X is H or a water-soluble salt-forming cation, and m is an integer of 1 to 10.

Ring polysulfonated alkylphenoxy alkylols as detergents

Detergent active materials capable of heavy duty washing in the absence of phosphates comprising linear alkyl hydrocarbyloxybenzene disulfonates of the formula ##STR1## in which R is linear alkyl of 10 to 24 carbon atoms, X is H or a water-soluble salt-forming cation, Z is H, or an alkyl group of 1 to 6 carbon atoms and Y is H, alkyl of 1 to 6 carbon atoms, alkenyl of 2 to 6 carbon atoms, or aralkyl of 7 to 9 carbon atoms, Y and Z may be polymethylene chain of 2 to 7 carbon atoms, the sum of the aliphatic carbon atoms in R and --CH--YZ is from 17 to 25, and for this purpose an aromatic carbon atom is considered equal to 2/3 aliphatic carbon atom.

Linear alkyl hydrocarbyloxybenzene disulfonates

A process for making a sulfur foam containing at least 50 weight percent sulfur which comprises (a) contacting and reacting molten sulfur with a carboxylic acid which is reactive with the molten sulfur so as to incorporate the acid with the molten sulfur and form a molten sulfur-acid adduct containing carboxylic acid groups; (b) mixing the molten adduct with an alkali earth metal carbonate and a foam stabilizer such as talc or mica to obtain a mixture; and (c) reacting said mixture with phosphoric acid in the absence of any added phosphorus sulfide to obtain the foam. Preferably the molten sulfur is reacted with a plasticizer such as dicyclopentadiene before foaming with phosphoric acid.

A process for the production of sulfur foam containing at least 50 weight percent sulfur, which comprises:

Continuous sulfur foam preparation using polyisocyanates

New compositions of matter useful as lime soap dispersants comprise the 2-hydrocarbyl-1,4-butanediol disulfates.

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Tiburon, CA, United States of America

Gar L Woo