Polyethylene composition for injection moulding with improved stress crack/stiffness relation and impact resistance
US7947783B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Oct 6, 2006 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Jan 25, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10 min, (ii) the environmental stress crack resistance ESCR measured in hours according to ASTM 1693, condition B and E-modulus EM measured according to ISO 527-2: 1993 in MPa satisfy the following relation: ESCR>−EM h/MPa+1150 h.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.