Patent · US Active

Production of terephthalic acid di-esters using alcohol-amine promoters

US9139505B2 · kind B2 · utility

1Cited by

34References

20Claims

0Family size

Assignee

Eastman Chemical Company · US

Inventors

Phillip Wayne Turner · Bristol, US
Steven Leroy Cook · Kingsport, US
Anthony G. M. Barrett · London, GB

Key dates

Filing date	Nov 8, 2013
Grant date	Sep 22, 2015
Priority date	—
Expiry date	Nov 8, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/265
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention is directed to a process for preparing a terephthalic acid di-ester. The process includes contacting terephthalic acid with a C6-C10 alcohol in the presence of an organo-titanium catalyst and an alcohol-amine promoter under conditions effective to form a corresponding terephthalic acid di-ester. The promoter can improve the reaction time by as much as 50%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.