2,6-dimethyphenol composition
US7060781B2 · kind B2 · utility
4Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2002 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Aug 6, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/0657
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A 2,6-dimethylphenol composition having an m-cresol content of from 15 to 700 ppm on a weight basis has effects of drastically improving polymerization activity and particularly, improving the color tone of polyphenylene ethers. Therefore, the composition makes it possible to provide a preparation process having improved productivity, and at the same time, provide polyphenylene ethers having good quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.