Method for producing polyoxyalkylene polyol and derivatives thereof
US6410676B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | May 30, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The object is to provide a method for producing a polyoxyalkylene polyol and a method for producing a derivative thereof wherein the remaining catalyst compound is efficiently removed from a crude polyoxyalkylene polyol by a simple manner, and a method for producing a polyoxyalkylene polyol wherein a crude polyoxyalkylene polyol is produced by addition polymerization of an epoxide compound to an active hydrogen compound using as a catalyst a compound having a P═N bond, then, the crude polyoxyalkylene polyol is allowed to contact with a solid acid having a specific surface area of 450 to 1200 m2/g and an average pore diameter of 40 to 100 å to control the catalyst-remaining amount in the polyoxyalkylene polyol to 150 ppm or less, and a method for producing a derivative of the-above-described polyol are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.