Process for polymerizing cyclical olefins an photopolymerizable composition
US5776997A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1997 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Apr 23, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for the photocatalytic polymerization of a cyclical olefin or at least two different cyclical olefins in the presence of a metal compound as the catalyst, in which a photochemical ring-opening metathesis polymerization is carried out in the presence of a catalytic amount of at least one heat-stable titanium(IV), niobium(V), tantalum(V), molybdenum(VI) or tungsten(VI) compound in which a silylmethyl group and at least one halogen are bonded to the metal. The process can also be carried out by first performing the irradiation and ending the polymerization by heating. The process is suitable, for example, for the production of thermoplastic shaping compounds, coatings and images in relief.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.