The Standard Oil Company

Roman Loza

Janice L Greene

Gerald P Coffey

Arthur J Cooper

Roseann M Cyngier

Janie K Currie

Eleanor J Fendler

A slip or casting composition useful in molding or sheet casting comprising:

Process of making ceramics

A C-branched zwitterionic surfactant represented by the following formula is disclosed: ##STR1## wherein x and y are numbers, x is less than or equal to y+1, and the sum of x+y in the range of about 7 to about 19, with the provisos that: (1) when the sum of x+y is in the range of about 7 to about 13, x/y is in the range of about 0.3 to about 1.2; and (2) when the sum of x+y is in the range of about 14 to about 19, x/y is in the range of about 0.1 to about 0.7. An enhanced oil recovery method using the foregoing surfactants is also disclosed.

C-branched zwitterionic surfactants and enhanced oil recovery method

Divalent ion tolerant aromatic sulfonate suitable for enhanced oil recovery characterized by the formula: ##STR1## where x=0 to 4

Divalent ion tolerant aromatic sulfonates

A C-branched zwitterionic surfactant represented by the following formula is disclosed: ##STR1## wherein x and y are numbers, x is less than or equal to y+1, and the sum of x+y is in the range of about 7 to about 19, with the provisos that: (1) when the sum of x+y is in the range of about 7 to about 13, x/y is in the range of about 0.3 to about 1.2; and (2) when the sum of x+y is in the range of about 14 to about 19, x/y is in the range of about 0.1 to about 0.7. An enhanced oil recovery method using the foregoing surfactants is also disclosed.

Divalent ion tolerant aromatic sulfonate suitable for enhanced oil recovery characterized by the formula: ##STR1## wherein x=0 to 4

This invention describes a process for preparing liquid polyamides comprising contacting a nitrile, amine and water in the presence of a carbon dioxide catalyst.

Preparation of liquid polyamide from dinitrile and diamine

This invention describes a process for preparing polyamides comprising contacting a dinitrile, a diamine and water in the presence of a dicarboxylic acid. In one embodiment, nylon-6,6 is prepared by contacting adiponitrile, hexamethylene diamine and water in the presence of adipic acid.

Preparation of polyamide by contacting diamine, dinitrile, water,

This invention describes a process for preparing amides comprising contacting a nitrile, amine and water in the presence of a carbon dioxide catalyst. In one embodiment, nylon-6,6 is prepared by contacting adiponitrile, hexamethylene diamine and water in the presence of carbon dioxide.

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Solon, OH, United States of America

Roman Loza