Polymercaptopolyphenyl and process for preparation thereof
US7053173B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2002 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Apr 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C321/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel di-, tri-, or tetra-thiols or thiolates of biphenyl, biphenyl derivatives, terphenyl or terphenyl derivatives, as represented by general formula (A), wherein M1 and M2 are each independently selected from the group consisting of H, Na, Li and K, and R1 to R7 are each H or an organic group, with the proviso that M1, M2 and R1 to R7 may be the same or different from each other; E1 and E2 are SM3 and SM4 (wherein M3 and M4 are each selected from the same group as defined above for M1 or M2) or each a group selected from among those as defined above for R1 to R7; and n is 1 or 0, with the proviso that when n is 0, E1 and E2 are SM3 and SM4
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.