Method for reducing the quantity of siloxane oligomer in organopolysiloxane moldings
US5167883A · kind A · utility
21Cited by
1References
1Claims
0Family size
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Key dates
| Filing date | Dec 26, 1990 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | Dec 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of improving the efficient depletion of the siloxane oligomer present in organopolysiloxane moldings by using supercritical carbon dioxide gas, so that this reduction in siloxane oligomer content is accomplished without cracking of the moldings by regulating the pressure reduction to less than 40 Kg/cm.sup.2 per 1 hour during the release to atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.