Gulf Research & Development Company

Gulf Oil Corporation

J Gustav Schulz

Edward T Sabourin

Robert W Hill

Pamela M Bunting

Clarence D Bertino

Bis-quinizarin compounds are disclosed. They have the structure: ##STR1## where X is ##STR2## --CF.sub.2 --, or a bond.

Bis-quinizarin compounds

An acetone-insoluble organic acid product from the nitric oxidation of lignite is useful in growing single cell protein.

Novel single cell protein substrate

A mixture of polycyclic aromatic polycarboxylic anhydrides carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water and a process for preparing the mixture.

Aromatic anhydrides

A foamable polymer composition comprising a resinous polymer and a mixture of polycyclic aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water obtained as a result of the nitric acid oxidation of a carbonaceous material, such as coal.

Foamable resinous polymer compositions containing acid mixtures

A mixture of polycyclic aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water and a process for preparing the mixture.

Growing community of inventors

Pittsburgh, PA, United States of America

J Gustav Schulz