Patent · US Active

Process for the preparation of 1,4-cyclohexanedimethanol

US8410317B2 · kind B2 · utility

2Cited by

9References

17Claims

0Family size

Assignee

Eastman Chemical Company · US

Inventors

Phillip Wayne Turner · Bristol, US
Steven Leroy Cook · Kingsport, US
Benjamin Fredrick Barton · Kingsport, US
Jeff Scott Howell · Jonesborough, US
Noah Glenn McMillan · Kingsport, US
Damon Bryan Shackelford · Kingsport, US
Brent Alan Tennant · Kingsport, US

Key dates

Filing date	Jul 29, 2011
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Jul 29, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Disclosed is a process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid. Terephthalic acid is esterified with (4-methylcyclohexyl)methanol and the terephthalate ester hydrogenated to 1,4-cyclohexanedimethanol in a 2-stage process. The (4-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. After removal of the (4-methylcyclohexyl)methanol from the crude hydrogenation product, the 1,4-cyclohexanedimethanol product can be recovered and purified by a phase separation and distillation.

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