Introducing PIDA. A m o c o ' s newest intermediate is ready now for your evaluation
PIDA. Our name for Phenylindan Dicarboxylic Acid. The newest structure in Amoco's Aromatic Acid Development Program. Chemically, AMOCO PIDA is l,l,3-trimethyl-5carboxy-3-(p-carboxyphenyl) indan.
The features that distinguish its structure from any other commercially produced aromatic di-acid are its non-planarity, asymmetric carbon and separation of the aromatic portions of the molecule by an alicyclic ring.
Some interesting characteristics are found in preliminary data on potential applications of PIDA. For example— 1. Polyesters and Polyamides (partial or total substitution of PIDA for conventional acids): increased second order transition temperatures— reduced density—reduced crystallinity. 2. Short Oil Air Dry Alkyds: fast dry—high hardness—good adhesion. 3. Oil Free Baking Alkyds: good mechanical properties—• good retention of color and high gloss—very good detergent and chemical resistance— improved weatherability. 4 . Unsaturated Polyesters: Excellent styrene compatability and possible improved chemical resistance. 5. Hot Melt Adhesives: good adhesion—better hydrolytic stability—good abrasion resistance—lower melt temperature. 6. Engineering Thermoplastics: very good impact resistance.
You can give AMOCO PIDA your own lab evaluation by getting a research-size sample and our PIDA Bulletins. Contact your Amoco salesman or write to us. Amoco Chemicals Corporation, Department 9846, 130 East Randolph Drive, Chicago, Illinois 60601.
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