Onium gallates cationic initiators
US6166233A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Aug 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/029
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to novel onium gallates or gallates of organometallic compounds and polymerizable compositions containing the same. The onium gallates include an anionic gallate moiety and a cationic moiety. The anionic gallate moiety has the formula EQU GaX.sub.a R.sub.b.sup.- in which X is a halogen or a hydroxy group, R is an aryl group, a and b represent integers ranging from 0 to 4 and the sum of a and b is 4. The cationic moiety is selected from the group consisting of iodonium, pyrylium, thiapyrylium, sulphonium, phosphonium, ferrocenium, and diazonium ions. The novel onium gallates are useful as cationic initiators of polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.