Coating composition
US6645588B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2000 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jul 24, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1359
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Conventional coating compositions have the disadvantage of being insufficiently coatable and having an unsatisfactory environmental stress cracking resistance. Now a coating composition has been found which has both good coating processability and environmental stress cracking resistance. It comprises a multimodal ethylene polymer, which contains from 80 to 100% by weight of ethylene repeating units and from 0 to 20% by weight of C3-C10 &agr;-olefin repeating units, has a density of between 0.915 g/cm3 and 0.955 g/cm3, and is a blend of at least a first ethylene polymer having a first average molecular weight and a first molecular weight distribution and a second ethylene polymer having a second average molecular weight, which is higher than said first average molecular weight, and a second molecular weight distribution, said blend having a third average molecular weight and a third molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.