Process for the preparation of polymers having an inorganic backbone
US4942218A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1988 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | May 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a method of making a polymer by reacting, in the absence of water, an organic compound having the general formula R-H wherein R represents an organo radical having at least one unsaturated carbon-carbon bond and H is covalently bonded to one of said carbons, with PX.sub.3, wherein X is a halide radical, and zirconium ions to yield a reaction product and oxidizing and hydrolyzing such reaction product to yield a polymer represented by the general formula Zr(O.sub.3 PR).sub.n wherein n varies from about 1 to about 2.5. R may comprise sulfonic acid groups or may comprise sulfonatable site for sulfonation during the oxidation step. In either case, the resulting product is useful as an acid catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.