Process for expanding microspheres
US4513106A · kind A · utility
37Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1983 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Nov 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/09
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for expanding expandable thermoplastic microspheres containing a blowing agent which will be volatilized at heating. A slurry of the unexpanded spheres is fed to a pressure zone together with steam whereby volatilization of the blowing agent occurs in the zone and the expanded microspheres are then allowed to leave the zone at a considerable pressure drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.