Process for alkoxylation with a boron-containing catalyst
US6593500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2654
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a process for making alkoxylates of organic compounds. The process requires a) providing an active hydrogen organic compound having 1 to 22 carbon atoms, and b) alkoxylating the organic compound with an alkylene oxide in the presence of a catalytically effective amount of a catalyst compound corresponding to either formula (I) or formula (II):B(&phgr;)3  (I)H+B(&phgr;)4−  (II)wherein B is a boron atom and H is a hydrogen atom; &phgr; is a phenyl moiety having substituents selected from the group consisting of 1 to 5 fluorine atoms, 1 to 5 CF3 moieties, 1 to 5 OCF3 or SCF3 moieties or OR; wherein C is a carbon atom, O is an oxygen atom, S is a sulfur atom and F is a fluorine atom; wherein R is a hydrogen atom or an alkyl or aryl group having from 1 to 22 carbon atoms. The process affords a product of very narrow molecular weight distribution with a low degree of both residual active hydrogen organic starting material and undesirable by-products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.