Foundry binder systems which contain alcohol modified polyisocyanates
US6124375A · kind A · utility
0Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Nov 20, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C1/2273
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to foundry binder systems which use modified polyisocyanates. The modified polyisocyanates are prepared by reacting a polyisocyanate with an aliphatic alcohol having one active hydrogen atom. These modified polyisocyanates, along with a phenolic resole resin, are added to a foundry aggregate to form a foundry mix which is shaped and cured with a gaseous amine curing catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.