Method and composition for a furan-modified phenolic novolak binder system
US4348343A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1980 |
| Grant date | Sep 7, 1982 |
| Priority date | — |
| Expiry date | Oct 6, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and composition for forming a dry free-flowing particulate solid is disclosed which utilizes a novel binder system for bonding particles of carbon, sand and/or other solid particulate materials. The solid, non-sticky binder system comprises furfural, solid resin, (such as a phenolic resin), which is not sticky at room temperature and is soluble in furfural, and a liquid amine having free hydrogens on the amine nitrogen which amine is capable of reacting with furfural. This system is capable of adhering to such particles while retaining the free-flowing characteristics of the particles. The free-flowing particulate solid thus formed may be shaped, extruded or compression molded as necessary to form the desired article. A shaped mass of this particulate material is converted to an integral mass by warming or compressing. While the binder is curable at room temperature over a long period of time, the cure rate may be accelerated by increases in temperature. Carbonization of the resin system yields a high carbon residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.