Ethylene based copolymer compositions as viscosity modifiers and methods for making them
US8999907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2011 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Dec 24, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/74
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polymeric compositions and methods for making and using the same are provided. The polymeric composition can include a first ethylene-based copolymer and a second ethylene-based copolymer. The first ethylene-based copolymer can have a weight percent of ethylene-derived units based on a weight of the polymeric composition (EA) ranging from about 35 wt % to about 52 wt % and a weight-average molecular weight (MwA) of less than or equal to 130,000. The second ethylene-based copolymer can have a weight percent of ethylene-derived units based on the weight of the polymeric composition (EB) ranging from about 65 wt % to about 85 wt % and a weight-average molecular weight (MwB) of less than 130,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.