Process for preparing a multilithio initiator for improved tire rubbers
US5595951A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1995 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Mar 16, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F36/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The subject invention discloses a process for preparing an initiator which contains a plurality of lithium atoms and which is particularly useful for initiating the polymerization of diolefin monomers into rubbery polymers; said process being comprised of reacting an alkyl lithium compound with an unsaturated hydrocarbon containing allylic, benzylic or aryl hydrogen atoms, wherein said process is conducted in the presence of a member selected from the group consisting of alkali metal alkoxides, alkali metal phenoxides, and chelating tertiary alkyl 1,2-ethylene diamines. After the initiators of this invention have been prepared they can be employed to initiate the polymerization of diolefin monomers into rubbery polymers. They can, of course, also be employed to initiate the copolymerization of diolefin monomers and vinyl aromatic monomers into rubbery polymers. These rubbery polymers can then be used in making tire tread compounds for automobiles and trucks. They offer the advantages of better processability, treadwear characteristics, and abrasion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.