Method for catalytic polymerization of substituted acrylates
US5312881A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1993 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Feb 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The synthesis, and use as catalysts of chiral organolanthanide complexes for polymerization of substituted acrylates are disclosed, having the structure [(C.sub.5 R'.sub.4-x R*.sub.x) A (C.sub.5 R".sub.4-y R'''.sub.y) M Q.sub.p ].sup.m, where x and y represent the number of unsubstituted locations on the cyclopentadienyl ring; R', R", R''', and R* represent substituted and unsubstituted alkyl groups having 1-30 carbon atoms and R* is a chiral ligand; A is a fragment containing a Group 13, 14, 15, or 16 element of the Periodic Table; M is a Group 3, 4, 5, or lanthanide metal of the Periodic Table; and Q is a hydrocarbyl radical, aryl, hydrogen, amide radical, or halogen radical, with 3.gtoreq.p.gtoreq.o; and m=o or +1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.