new "building blocks" for the products of tomorrow are now ready for processes being...

NEW ISOPAR isoparaffinic hydrocarbons

Many products yet unborn are now commercially possible with this new family of high-purity isoparaffinic hydrocarbons. Con­structed by catalytic synthesis, Isopar presents a unique chal­lenge. For the first time its useful set of properties is available in commercial quantities for the chemical industry. Applications are virtually infinite!

IN POLYOLEFIN REACTIONS, as a high-purity diluent, Isopar offers good polymer yields with low catalyst consump­tion. Isopar gives adequate solvency for catalysts and mono­mers; has unique solvency properties in stereo rubber solution systems—also minimum solvency for slurried type polymers. Several narrow-range grades of stepped volatility help optimize separation and recovery.

For free brochure, "Isopar," write to our Solvent Sales Department in Houston, Texas. ' 'Trademark,

P U R I T Y — aromatics — only a few parts per thousand • Sulfur, carbonyls, chlorides, peroxides—only a few parts per mi l l ion · non-vo la t i l e con ten t—prac t i ca l ly n i l . FRACTIONATION — excellent, several narrow-range frac­tions boiling between 120°F and 500°F. REACTIVITY — inert to many polyolef in c a t a l y s t s and reac t ions . SOLVENCY—highly selective. ODOR AND COLOR— nearly nil (mild, pleasant odor with lighter fractions). STABILITY —excellent. LOW TOXIC HAZARD —least harmful of hydrocarbons of equivalent volatility tested.

HUMBLE O I L & R E F I N I N G C O M P A N Y

IT PAYS TO DO BUSINESS WITH HUMBL E. . . AMERICA'S LEADING ENERGY COMPANY

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Hew "building blocks" for the products of tomorrow are now ready for processes being developed today! i

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