Novolak resin mixtures
US5371169A · kind A · utility
6Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1992 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Sep 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L61/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides mixture of at least two novolak resins with a molecular weight distribution overlap of at least 50% and having dissolution rates which differ by a factor of at least 2.0. A method is also provided for producing such novolak resin mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.