Reactive phenolic resin modifier
US5866642A · kind A · utility
25Cited by
23References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1993 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | May 19, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08H6/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A low molecular weight lignin fraction having a pre-selected molecular weight range prepared from lignin solution by ultrafiltration. The invention also relates to phenol-formaldehyde resin modified by the lignin fraction, adhesive comprising the modified resin, and a method for producing the lignin fraction and the resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.