Phenol-formaldehyde resins modified with guanidine salts
US5763559A · kind A · utility
6Cited by
10References
25Claims
0Family size
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Inventor
Key dates
| Filing date | Jan 21, 1997 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Jan 21, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31957
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A guanidine-modified phenol-formaldehyde resole resin by reacting formaldehyde and phenol at a formaldehyde to phenol mole ratio above about 1.5:1 in the presence of an effective amount of an alkaline catalyst and in the presence of a catalytic amount of a guanidine salt. The resin is suitable for use in adhesives for high moisture content substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.