Freeze blending of reactive liquids and solids
US4474905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Feb 24, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B7/82
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Chemically reactive liquids such as catalyzed monomers and prepolymers are mixed with finely divided solids to form a homogeneous blend by chilling the liquid to a temperature below its solidification point, forming it into finely divided solidly frozen particulates, chilling the finely divided solids to a temperature below the solidification temperature of the reactive liquid and mixing the materials together without allowing the temperature to rise to the liquid solidification point. The admixture may then be formed into a permanent shape by warming to a temperature whereat the frozen liquid melts and the liquid is caused to react.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.