Foundry aggregate binders and foundry compositions prepared therefrom
US4311620A · kind A · utility
4Cited by
9References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | May 8, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/64
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel resin binders for foundry sand molds and cores are provided by reacting a polyol component comprising a phenol ketone resin, a reactive solvent and a cross-linking agent in a solution for these components with a solution of an organic polyisocyanate. The foundry binder cures rapidly at ambient temperature in the presence of a tertiary amine curing agent to provide strong foundry molds and cores. Polyether polyols may also be incorporated in the polyol component of the novel resin binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.