Title:
PERFLUOROPOLYETHERS AND PROCESSES THEREFOR AND THEREWITH
Document Type and Number:
WIPO Patent Application WO2002006375
Kind Code:
A3
Abstract:
A perfluoropolyether, a composition comprising the perfluoropolyether, a process for producing the perfluoropolyether, and a process for improving the thermostability of grease or lubricant are provided. The perfluoropolyether comprises (1) perfluoroalkyl radical end groups in which the radical has at least 3 carbon atoms per radical and is substantially free of perfluoromethyl and perfluoroethyl end groups or (2) at least one bromine or iodine atom at the primary position of the perfluoropolyether.
Inventors:
HOWELL JON L (US)
PEREZ ERIK WILLIAM (US)
WATERFELD ALFRED (US)
FRIESEN CHADRON MARK (CA)
THRASHER JOSEPH STUART (US)
PEREZ ERIK WILLIAM (US)
WATERFELD ALFRED (US)
FRIESEN CHADRON MARK (CA)
THRASHER JOSEPH STUART (US)
Application Number:
PCT/US2001/022817
Publication Date:
October 10, 2002
Filing Date:
July 19, 2001
Export Citation:
Assignee:
DU PONT (US)
HOWELL JON L (US)
PEREZ ERIK WILLIAM (US)
WATERFELD ALFRED (US)
FRIESEN CHADRON MARK (CA)
THRASHER JOSEPH STUART (US)
HOWELL JON L (US)
PEREZ ERIK WILLIAM (US)
WATERFELD ALFRED (US)
FRIESEN CHADRON MARK (CA)
THRASHER JOSEPH STUART (US)
International Classes:
C10M105/54; C08G65/00; C08G65/22; C08K3/36; C08K3/38; C08L27/18; C08L71/00; C10M107/38; C10M113/00; C10M113/12; C10M119/22; C10M147/04; C10M169/02; C10M169/06; C10N30/08; C10N50/10; (IPC1-7): C08G65/00; C08G65/22; C08G65/323; C10M107/38
Domestic Patent References:
| WO1990003353A1 | 1990-04-05 | |||
| WO1991015616A1 | 1991-10-17 |
Foreign References:
| US3505411A | 1970-04-07 | |||
| EP0381086A1 | 1990-08-08 | |||
| US4174461A | 1979-11-13 | |||
| EP0472423A2 | 1992-02-26 | |||
| EP0348948A2 | 1990-01-03 | |||
| EP0195946A2 | 1986-10-01 | |||
| EP0803526A2 | 1997-10-29 | |||
| EP0340739A2 | 1989-11-08 |
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