Method to produce functionalized, low viscosity ethylene-based polymers
US10131732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Dec 16, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a process to form a “functionalized ethylene-based polymer” from an ethylene-based polymer and at least one polar compound, said process comprising thermally treating a composition comprising the ethylene-based polymer, the at least one polar compound, and at least one peroxide, in at least one extruder comprising at least one barrel, to form a polymer melt; and wherein the at least one peroxide has a half life, at the maximum barrel temperature of the at least one extruder, of less than of the minimum residence time of the polymer melt in the at least one extruder. The invention further provides a composition comprising at least the following: a) an ethylene-based polymer comprising a melt viscosity, at 350° F. (177° C.), less than 50.000 cP, and b) at least one peroxide comprising a half-life from 0.10 to 2.00 minutes, at a temperature from 160° C. to 190° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.