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CA2241269A1 - Process for the preparation of polyoxyalkylene polyether polyols having low levels of transition metals, prepared using double metal cyanide complex catalyst - Google Patents

Process for the preparation of polyoxyalkylene polyether polyols having low levels of transition metals, prepared using double metal cyanide complex catalyst

Info

Publication number
CA2241269A1
CA2241269A1 CA002241269A CA2241269A CA2241269A1 CA 2241269 A1 CA2241269 A1 CA 2241269A1 CA 002241269 A CA002241269 A CA 002241269A CA 2241269 A CA2241269 A CA 2241269A CA 2241269 A1 CA2241269 A1 CA 2241269A1
Authority
CA
Canada
Prior art keywords
cyanide complex
metal cyanide
double metal
oxyalkylation
prepared
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002241269A
Other languages
French (fr)
Other versions
CA2241269C (en
Inventor
Yiannakis Televantos
Bi Le-Khac
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Antwerpen NV
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/577,986 external-priority patent/US5767323A/en
Application filed by Individual filed Critical Individual
Publication of CA2241269A1 publication Critical patent/CA2241269A1/en
Application granted granted Critical
Publication of CA2241269C publication Critical patent/CA2241269C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Polyethers (AREA)

Abstract

Substantially transition metal-free polyoxyalkylene polyethers may be prepared by double metal cyanide complex-catalyzed oxyalkylation of a suitable hydric oxyalkylation initiator molecule by employing 15 ppm or less of a double metal cyanide complex oxyalkylation catalyst having a propylene oxide polymerization rate greater than 5g propylene oxide/minute. The induction periods associated with oxyalkylation employing double metal cyanide complex catalysts may be reduced by preparing preactivated master batches and by increasing the oxyalkylation reactor temperature during at least the induction period.
CA002241269A 1995-12-22 1996-12-19 Process for the preparation of polyoxyalkylene polyether polyols having low levels of transition metals, prepared using double metal cyanide complex catalyst Expired - Fee Related CA2241269C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/577,986 US5767323A (en) 1995-12-22 1995-12-22 Process for preparing polyoxyalkylene polyether polyols having low levels of transition metals through double metal cyanide complex polyoxyalkylation
US08/577,986 1995-12-22
PCT/EP1996/005708 WO1997023544A1 (en) 1995-12-22 1996-12-19 Process for the preparation of polyoxyalkylene polyether polyols having low levels of transition metals, prepared using double metal cyanide complex catalyst

Publications (2)

Publication Number Publication Date
CA2241269A1 true CA2241269A1 (en) 1997-07-03
CA2241269C CA2241269C (en) 2005-10-04

Family

ID=35395931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002241269A Expired - Fee Related CA2241269C (en) 1995-12-22 1996-12-19 Process for the preparation of polyoxyalkylene polyether polyols having low levels of transition metals, prepared using double metal cyanide complex catalyst

Country Status (1)

Country Link
CA (1) CA2241269C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116265506A (en) * 2021-12-16 2023-06-20 长华化学科技股份有限公司 Process for the preparation of polyetherester polyols

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116265506A (en) * 2021-12-16 2023-06-20 长华化学科技股份有限公司 Process for the preparation of polyetherester polyols

Also Published As

Publication number Publication date
CA2241269C (en) 2005-10-04

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Legal Events

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MKLA Lapsed

Effective date: 20161219

MKLA Lapsed

Effective date: 20161219