Process for producing particulate novolac resins and aqueous dispersions
US4788236A · kind A · utility
15Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1984 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Oct 4, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Particulate novolac resins and aqueous dispersions are produced by condensing phenol with aldehyde using acid catalysis. Following neutralization, particulate novolac resin is formed by adding protective colloid to the aqueous mixture. Resin particle isolation can be aided by dephenolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.