Bis(aryloxyalkyl) esters of aromatic polycarboxylic acids and method of preparation
The invention provides a compound of the formula: wherein Ar is selected from the group consisting of aryl, monosubstituted aryl and polysubstituted aryl, heteroaryl, monosubstituted heteroaryl and polysubstituted heteroaryl; Ar′ is selected from the group consisting of aryl, monosubstituted aryl and polysubstituted aryl, heteroaryl, monosubstituted heteroaryl and polysubstituted heteroaryl; R is an alkylene radical having 2-20 carbon atoms; and n=1-20. The compounds of the invention are used with polymer resins to enhance their gas barrier properties.
1. A composition containing 99.4% of a diester of the formula:
and 0.6% of a monoester having the formula
wherein Ar is aryl; Ar′ is aryl; R is an alkylene radical having 2-20 carbon atoms; n=1-20.
2. A composition according to claim 1 , wherein said aryl group is selected from the group consisting of phenyl, naphthyl, biphenyl, terphenyl, and all positional isomeric derivatives thereof.
3. A composition according to claim 2 , wherein said diester has the formula
and said monoester has the formula
4. A composition according to claim 2 , wherein said diester has the formula
and said monoester has the formula
5. A composition according to claim 2 , wherein said diester has the formula
and said monoester has the formula
6. A composition according to claim 2 , wherein said diester has the formula
and said monoester has the formula
7. A composition according to claim 2 , wherein said diester has the formula
and said monoester has the formula