Texaco Chemical Co

Propylene Oxide, Product Bulletin, Texaco Chemical Co., Austin, Tex., 1986. 

Catalyst Study. Equivalent amounts of p-phenylenebis(4,4-dimethyl-2-oxazol1n-5-one ) (2) and Jeffamine D-2000 (polyoxypropylenediamine from Texaco Chemical Co., amine equiv. weight 1023) were mixed with 5 mole % of the desired catalyst. The stirred mixture was heated at 240°C under argon for 30 minutes, then an additional 1.5 hours under vacuum (<1 torr) and collected. The amount of cyclization was estimated by 1H-NMR in CDC 13 by comparison of the Integrated intensities of the absorptions due to the gem-dimethyl substituents. These absorptions appeared at 1.39 ppm in the cyclic form and at 1.73 ppm in the open-chain form of the polymer (see Scheme 4). Results are listed in Table I. 

U.S. manufacturers of alphaolefins include Ethyl Corp., Shell Chemical Co., Shell Oil Co., and Texaco Chemical Co. (USITC 1993). More than 1 billion pounds of alphaolefins were produced in 1991 (USITC 1993), but no information concerning the volume of alphaolefins used in the production of polyalphaolefin hydraulic fluids was found in the available literature. 

M Industrial Chemical Products Division Texaco Chemical Co. 

---