Title:
DEHYDROXYLATION OF POLYETHER POLYOLS AND THEIR DERIVATIVES USING A HALOGEN-BASED CATALYST
Document Type and Number:
WIPO Patent Application WO/2013/090077
Kind Code:
A3
Abstract:
Polyether polyols, derivatives and combinations thereof are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. Derivatives include polyether polyols incorporated in polyurethanes. The process includes gas pressure from 1 psig (~6.89 KPa) to 2000 psig (~13.79 MPa), a temperature from 50 °C to 250 °C, a liquid reaction medium, and a molar ratio of the starting material to halogen atoms from 1:10 to 100:1.
Inventors:
DESHPANDE RAJ (IN)
DAVIS PAUL (IN)
PANDEY VANDANA (IN)
KORE NITIN (IN)
BRIGGS JOHN R (US)
DAVIS PAUL (IN)
PANDEY VANDANA (IN)
KORE NITIN (IN)
BRIGGS JOHN R (US)
Application Number:
PCT/US2012/067837
Publication Date:
August 08, 2013
Filing Date:
December 05, 2012
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES LLC (US)
International Classes:
C07C1/20; C07C11/02; C07C11/04; C07C11/06
Foreign References:
| US20110112314A1 | 2011-05-12 |
Other References:
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; KORSHAK, V. V. ET AL: "High-molecular weight compounds. XXVIII. Action of hydriodic acid on ethylene glycol and its polyesters", XP002697571, retrieved from STN Database accession no. 1951:8578
PARIJAT SARMAH ET AL: "Regioselective transformation of allylic, benzylic and tertiary alcohols into the corresponding iodides wrih aluminium triiodide: deoxygenation of vicinal diols", TETRAHEDRON, vol. 45, no. 11, 1989, pages 3569 - 3574, XP055057445, ISSN: 0040-4020, DOI: 10.1016/S0040-4020(01)81035-8
W. G. GUENTHER ET AL: "The thermal decomposition of dioxolane", JOURNAL OF ORGANIC CHEMISTRY., vol. 73, 1951, USAMERICAN CHEMICAL SOCIETY, WASHINGTON, DC., pages 2127 - 2131, XP002697572, ISSN: 0022-3263
PARIJAT SARMAH ET AL: "Regioselective transformation of allylic, benzylic and tertiary alcohols into the corresponding iodides wrih aluminium triiodide: deoxygenation of vicinal diols", TETRAHEDRON, vol. 45, no. 11, 1989, pages 3569 - 3574, XP055057445, ISSN: 0040-4020, DOI: 10.1016/S0040-4020(01)81035-8
W. G. GUENTHER ET AL: "The thermal decomposition of dioxolane", JOURNAL OF ORGANIC CHEMISTRY., vol. 73, 1951, USAMERICAN CHEMICAL SOCIETY, WASHINGTON, DC., pages 2127 - 2131, XP002697572, ISSN: 0022-3263
Attorney, Agent or Firm:
HOWARD, Dan (P.O. Box 1967Midland, Michigan, US)
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