Abstract: A gravure ink composition and method of using the same for printing by the gravure process are disclosed. The composition comprises a pigment, a vehicle composed basically of a resin and solvent, and a small amount, e.g., 0.0002 to 1 wt. %, of an antioxidant. The antioxidant serves as a means for reducing the tendency of gravure ink formulations to streak during the printing process, particularly during high-speed printing operations. A preferred gravure ink formulation contains a small amount of an antioxidant such as 2,6-di-tert-butyl-4-methylphenol or 4,4'-bis(1,1,3,3-tetramethylbutylphenyl)amine.

Abstract: Normal aliphatic hydrocarbons in a hydrocarbon feed are selectively cracked or hydrocracked by contacting the feed with a catalyst composition comprising a crystalline acid aluminosilicate of the erionite variety (offretite) having a pore size of about 5 Angstroms and a silicon to aluminum ratio of at least 1.8, said aluminosilicate having been prepared by ion exchange with an aqueous medium containing a source of hydrogen ions or ions capable of conversion thereto, e.g., ammonium ions.

Abstract: Crystalline aluminosilicate zeolites are used as catalysts for various hydrocarbon conversion processes and are particularly useful for conversion of paraffins in the presence of an alkylatable aromatic hydrocarbon such as benzene.

Abstract: Crystalline aluminosilicate zeolites are used as catalysts for various hydrocarbon conversion processes and are particularly useful for conversion of paraffins in the presence of an alkylatable aromatic hydrocarbon such as benzene.