Lithium amino magnesiate polymerization initiators and elastomers having reduced hysteresis
US5610227A · kind A · utility
27Cited by
25References
23Claims
0Family size
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10495
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides anionic polymerization initiators, comprising lithium amino magnesiate complexes, resulting in diene polymer and copolymer elastomers. The invention initiators have stable living ends at high polymerization temperatures and produce polymers containing a high level of tertiary amine functionality. Such polymers exhibit an increased efficiency in coupling termination reactions, and elastomers and products prepared from such polymers exhibit reduced hysteresis properties. Methods are also provided for preparing the initiators, the polymers and the elastomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.