Crosslinked compositions containing silane-modified polypropylene blends
US6465547B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jul 24, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A moisture-crosslinkable polyolefin material, comprising a silane-grafted polyolefin blend, and coatings or insulations, including heat-shrinkable coatings and insulations, prepared therefrom. The coating material is formed by a process comprising: (a) reacting a pre-blended mixture of polyolefin and polypropylene, or higher polyolefin, resins and optional compatibilizing agent, with an appropriate silane and silane-grafting initiator to produce a silane-modified polyolefin blend composition; (b) forming the coating or insulating material by melt processing the composition produced in step (a) with a silanol condensation catalyst; and (c) crosslinking the formed coating or insulating material by exposing it to moisture, preferably at an elevated temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.