Ethylenic polymers and process for the production thereof
US6140443A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/639
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A blow-moldable or extrudable ethylene polymer having an excellent moldability which gives a molded product free of roughened surface, having: a number-average molecular weight Mn (V1) as determined from the amount of a terminal vinyl group by .sup.13 C-NMR measurement with respect to a fraction having a number-average molecular weight Mn of 100,000 according to GPC; and a number-average molecular weight Mn (V2) as determined from the amount of a terminal vinyl group by .sup.13 C-NMR measurement with respect to a fraction having a number-average molecular weight Mn of 10,000 according to GPC, Mn(V1) and Mn(V2) satisfying the following relationship: EQU 1.01.ltoreq.log.sub.10 {Mn(V1)/Mn(V2)}.ltoreq.3.0 and having a melt flow rate (HLMFR) of from 0.1 to 70 g/10 min.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.