Initiation system comprising a heterocyclic ligand for anionic polymerization of (METH)acrylic monomer(s) and polymerization process using same
US6262204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1998 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Apr 10, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an initiation system comprising at least one initiator, with the exception of amides of alkaline metals, and at least one alkaline metal alcoholate of the formula ROM, in which M is an alkaline metal and R represents a group EQU Q--R.sup.1 --(OR.sup.2 --).sub.m wherein Q is a heterocyclic compound with 5 or 6 chain links, substituted or not, having 1 or 2 oxygen atoms as heteroatoms, R.sup.1 and R.sup.2 represent an alkylene group, linear or branched at C.sub.1 -C.sub.4, and m is equal to 0, 1, 2 or 3. The present invention also relates to the application of the initiation system to the preparation of (meth)acrylic (co)polymers and, possibly, ethylenically unsaturated monomers that can be copolymerized with (meth)acrylic monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.