In-situ methods of generating water through the dehydration of metal salt hydrates for moisture crosslinking of polyolefins
US8889775B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Aug 20, 2013 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Compositions comprising a polymer resin comprising at least one copolymer with hydrolysable groups, a water-generating metal salt hydrate, and a catalyst that comprises a metal atom and at least two ligands taken from the set alkyloxy and carboxylate are used to form articles that moisture-cure through in-situ generation of water via dehydration of the metal hydrate. The compositions are melt mixed to promote the dehydration and start the cure process during the mixing step. The curing compositions are formed and allowed to harden.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.