Controlled polymerization of silazane monomers
US5037933A · kind A · utility
1Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Oct 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/589
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Organopolysilazanes or organopoly(disilyl)-silazanes having controlled physicochemical properties, well adapted for shaping and pyrolysis into useful ceramic articles, are prepared by catalytically polymerizing a silazane monomer to a desired degree of polymerization, and then, either during or upon completion of polymerization, contacting the polymerization reaction medium with at least one ion exchange material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.