Polyethylene composition for large diameter pipe stability
US9046196B2 · kind B2 · utility
0Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Jan 11, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Feb 21, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L9/127
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Pipe articles and methods of forming the same are described herein. The methods generally include providing an ethylene based polymer; contacting the ethylene based polymer with a secondary stabilizer including a diphosphite to form a modified polyethylene; and forming the modified polyethylene into a pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.