Method of increasing the absorption rate of peroxides into polymer particles
US7705091B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Jan 12, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a method of increasing the absorption rate of peroxides into polymer particles used to fabricate electrical cable insulation. The method includes contacting the polymer particles with a peroxide compound and an additive under physical mixing conditions at a temperature that is above the melting point of the peroxide compound but below the softening point of the polymer particles for a period of time sufficient to allow the peroxide compound to absorb into the polymer particles. Preferably, the additive is squalane or another branched, hydrocarbon oil that substantially increases the rate at which the peroxide compound is absorbed into the polymer particles and improves the peroxide cure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.