Process for the preparation of random copolymers of mono-olefins or of mono-olefins and unconjugated dienes with unsaturated derivatives selected from N-vinylimidazoles and N-vinylimidazolines
US3939132A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Apr 11, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31696
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is described for the preparation of substantially linear, amorphous random copolymers of mono-olefins or mono-olefins and unconjugated dienes with unsaturated nitrogen derivatives selected from N-vinylimidazoles and N-vinylimidazolines and compounds derived from them by substitution, for the hydrogen atoms fixed to the carbons in the heterocycle, of hydrocarbon or aminohydrocarbon radicals. At least two mono-olefins containing 2 to 20 carbon atoms, and possibly an unconjugated diene, are placed in contact, in an inert liquid medium at a temperature of between -80.degree. and +150.degree.C, with at least one of these nitrogen derivatives in the form of a complex with a Lewis acid, in the presence of a co-ordination catalyst system. The resulting copolymers can be vulcanized, and among other properties have excellent adherence to metal surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.