Document x18k73RY6yN6BzR2ywX47MNb0

INTERNAL CORRESPONDENCE n r< r~ T sr~ -., CHEMICALS AND PLASTICS to Mr,(name) J. H. Field COMPANY location TEXAS CITY PLANT /r* copy TO Mr. A. J. Costantin - 312 Mr. G. G. Himmler - 312 Dr. W. R. Manning - 511 M<F7""R. N. Wheeler - 51L Mr. W. E. Whitehurst - 511 P. O. BOX *71. TEXAS CITY, TEXAS >7590 date April 5* 1968 VBCElfO) APR 8 T968 R.K SUBJECT Airco VCl/Propylene Copolymers Dear Jack: !; Dr. Leon Fishbein of W. R. Grace and Company was in the plant last week cm business for Grace's Ellay Rubber operation. Dr. Fishbein's name is on Airco's patent applications for their VCl/C3Ha copolymers. He passed along the following information; \v 'iff" vlP * 'l, 1. Airco chose to commercialize VCl/c3Ho copolymers rather than VCl/CgH* because (1) the reduction, in heat distortion temperature was less, and (2) they didn't have autoclaves with pressure ratings sufficient to make VCI/C2H4 copolymers, : Vru\ 2. Airco now has in operation six 3*750 gal. autoclaves with design pressure ratings high enough to make the VCl/Csfle copolymers, 5. Development of markets for the VCl/CgH copolymers has been much slower than Airco expected, and they are still investing large stuns of money in supporting R and D and Tech Service. Yours very truly. A Dean E, Richardson