United States Pipe and Foundry Company, LLC

Jim Walter Resources, Inc.

David R Hart

Henry Philip Orem

Jerry E Hill

Wade K Cunningham

A process has been developed for producing complexes of phenol or phenolic compounds and hexamethylenetetramine by mixing the ingredients with only enough water, or other suitable solvent, to promote the reaction. Heat liberated by the reaction is controlled by cooling the mixing chamber, and drying is accomplished by removing the small amount of solvent in conventional type dryers.

Process for the production of phenolic complexes of

Reaction products of phenol and hexamethylenetetramine act as methylene donors in rubber compounds containing acceptors such as free resorcinol or precondensed resorcinol-formaldehyde (RF) resins. The products of reaction between this methylene donor and various methylene acceptors produce excellent adhesion between the rubber compounds and reinforcing substrates. Reinforcement of the rubber compound is obtained and this donor does not cause degradation of polyester cord used as a reinforcing substrate.

Substrate reinforced rubber structure and compound for forming same

A process for producing a salt of hexamethylenetetramine (hexa), such as the tolulene sulfonic acid (TSA) - hexa salt, by mixing an acid with hexamethylenetetramine and only enough solvent such as water to promote the reaction. Excess heat liberated by the reaction is controlled by cooling the mixing chamber and drying is accomplished in a heated or ambient atmosphere except for hygroscopic salts which are easily dried in a vacuum or may be dried in a very dry atmosphere.

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Birmingham, AL, United States of America

David R Hart