Phenolic polymer and production thereof
US5102962A · kind A · utility
36Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1990 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Mar 27, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A phenolic polymer obtained by reacting a phenolic compound with a bis(hydroxyalkyl)benzene, followed by alkylation of ortho positions or para position with respect to the hydroxyl group of the terminal phenol groups of the produced polymer is suitable for use as a heat resistant antioxidant for thermoplastic resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.