Uniform molecular weight polymers
US5169914A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1992 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Apr 1, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing polymers with narrow molecular weight distribution which involves combining (1) an initiator component of the formula ##STR1## in which R.sub.1, R.sub.2, and R.sub.3 are alkyl, aryl, or aralkyl groups, and can be the same or different, and X is an acetate, etherate, a hydroxyl group, or a halogen, and i is a positive whole number, (2) a Lewis acid of the formula MX.sub.n in which M is titanium, aluminum, boron, or tin, X is a halogen, and n is a positive whole number, (3) an electron donor component having an electron donor number of from at least about 25 to no more than about 50, (4) a solvent for the preceding and (5) a hydrocarbon monomer component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.