Phenolic polymer and production thereof
US4968759A · kind A · utility
43Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Feb 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/02
- 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.