Diesters and triesters of aromatic carboxylic acids, salts thereof and polyvinyl chloride resin compositions plasticized with the esters

摘要

The invention comprises compounds of formula C6H5CQ3, wherein the benzene ring may be substituted with 1-3 C1- 4-alkyl groups and/or Cl atoms, Q is C1- 4-alkyl or -CH2CHXCO2Z X is H or C1- 4-alkyl and Z is H or C1- 9-alkyl, not more than one Q being alkyl. Such compounds may be prepared by the method of Specification 990,083 or, where Z is, e.g., C4- 9-alkyl, by respectively esterifying or transesterifying the appropriate acid or lower alkyl ester. Specified compounds which may be thus produced are octyl 4-phenyl-2,4,6-trimethylpimelate, 2-ethylhexyl 4-methyl-4-p-tolylpimelate and butyl 4-(2-carbobutoxyethyl) -4-p-tolylpimelate.ALSO:Polyvinyl chloride is plasticized with compounds of formula C6H5CQ3, wherein the benzene ring may be substituted with 1-3 C1-4-alkyl groups and/or Cl atoms, Q is C1-4-alkyl or -CH2CHXCO2Z, X is H or C1-4-alkyl and Z is C1-9 alkyl, not more than one Q being alkyl. Preferred compounds are octyl 4-phenyl-2,4,6-trimethylpimelate, 2-ethylhexyl 4-methyl-4-p-tolypimelate and butyl 4-(2-carbobutoxyethyl)-4-p-tolypimelate.