1306 C H E M I C A L A N D E N G I N E E R I N G N E W S

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PFIZER ITACONIC ACID

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AVAILABLE IN QUANTITY

Two carboxyl groups, a conjugated double bond and an active methylene group make Pfizer Itaconic Acid a reactive and versatile molecule. It esterifies readily in high yields. Esters of low-molecular weight alcohols can be polymerized and fa t ty alcohol esters serve as useful plasticizers. Polyhydric alcohol esters form thermosetting resins. Monoesters can also be prepared. The double bond of the acid and its esters is highly reactive : addition polymers are possible with acrylonitrile, methyl methacrylate, vinyl chloride, vinylidene chloride, styrene and butadiene. Hydrogen halides add readily to the double bond, yielding 3-carboxy-4-halobutyric acids. Hydrogen sulfide reacts wi th two equivalents of diester to form thiotetracarboxylic esters. Cyclopentadiene, vinyl naphthalene and many other dienes undergo Diels-Alder reactions with itaconic anhydride. For fur ther information and a sample of this versatile compound, fill out the coupon below.

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CHAS. PFIZER & CO., INC., Chemical Sales Division 630 FlushingAve., Brooklyn 6 , Ν. Υ. 1 1 Please send me technical bulletin #82 on Pfizer Itaconic Acid. 1 1 Please send me a free one-lb. sample.

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CHA5. PFIZER & C O . , INC. Chemical Sales Division 030 Flushing Ave., Brooklyn 6. Ν. Υ.

Branch Offices; Chicago, III.; San Francisco, Calif.; Vernon, Calif.; Atlanta. Ga.

Manufacturing Chemists for Over 1O0 Years

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