Method and composition for the suppression of bloom in peroxide crosslinked polymeric articles
US7468412B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2005 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Jul 10, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a method for the suppression of bloom in polymeric articles that are crosslinked using α,α′-bis(tert-butylperoxy) diisopropylbenzene, polymeric compositions comprising α,α′-bis(tert-butylperoxy) diisopropylbenzene that are non-blooming, agents for crosslinking polymers, and crosslinked polymeric articles formed in accordance with the method of the invention. Agents for crosslinking a polymeric composition according to the invention include a mixture of α,α′-bis(tert-butylperoxy) diisopropylbenzene and a nonionic compound having a hydrophobic group bonded to a polyethylene glycol chain via an ether linkage, wherein the hydrophobic group includes about 12 or more carbon atoms at least 8 of which are in the form of an alkyl chain, and wherein the polyethylene glycol chain includes about 20 or more ethylene oxide units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.