New dinonyl adipates or phthalates derived from new mixtures of isomeric nonanols are useful as plasticizers for polyvinyl chloride and give better properties than pure isononyl esters

摘要

New mixtures (I) of dicarboxylic acid diesters with isomeric nonanols consist of adipate or phthalate diester mixtures having 1H-NMR spectra (obtained in CDCl3) with specific ratios of surface areas below the resonance signals for particular chemical shifts towards TMS. The ratio of the surface area for shifts of 1.0-2.0 ppm to that for shifts of 0.5-1.0 ppm is 1.20-5.00 for the adipate diesters; and the ratio of the surface area for shifts of 1.1-3.0 ppm to that for shifts of 0.5-1.1 ppm is 1.00-4.00 for the phthalate diesters; An Independent claim is included for mixtures (II) of isomeric nonanols which either: (i) form (I) as defined above on esterification with adipic or phthalic acid; or (ii) are obtained by hydroformylation of a mixture of isomeric octenes in presence of a cobalt catalyst and hydrogenation of the product, where the isomeric octene mixture is obtained by contacting a hydrocarbon mixture containing butenes with a heterogeneous catalyst containing a nickel oxide.