High temperature naphthol novolak resin
US4404357A · kind A · utility
22Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1982 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | May 3, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G8/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel resins are disclosed that are the reaction products of an aldehyde and an aromatic alcohol mixture of naphthol, preferably 1-naphthol, and a phenol. The molar ratio of the naphthol to the phenol in the reaction mixture can vary from about 20 to 1 to 1 to 20. The resins are formed by condensing the aldehyde with the aromatic alcohol mixture in the presence of an acid catalyst where the molar ratio of the aromatic alcohol to aldehyde is less than 1. The resins of the invention are characterized by melt temperature higher than the melt temperatures of conventional novolak resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.