Rhodium containing catalysts for the synthesis of epoxysiloxane/epoxysilicone monomers and polymers
US5442026A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Nov 10, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2231/323
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a method for making a curable epoxysilicone composition through the hydrosilation reaction between an ethylenically unsaturated epoxide and an SiH-containing silicone to produce an epoxysilicone product, and catalyzed by a rhodium containing selective catalyst which does not promote the oxirane ring-opening reaction of either the ethylenically unsaturated epoxide starting material or the epoxysilicone product. The rhodium containing selective catalyst has the general formula EQU [R.sub.4 M].sup.+ [RhCl.sub.3 Br].sup.- wherein M is phosphorous or nitrogen and R is an organic radical comprising a C.sub.1-18 linear alkyl radical, aryl, alkaryl or aralkyl radical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.