Preparation of cyclotetrasiloxanes aliphatic chlorides and acyl chlorides
US4329483A · kind A · utility
4Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1981 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Jul 10, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing cyclotetrasiloxane, aliphatic chlorides and/or acyl chlorides from a chlorosilane and an acyloxy compound is disclosed. The chlorosilane and the acyloxy compound may be present as substantially equimolar amounts of separate compounds or they may be present in the same molecule in equimolar amounts. The reactants are merely heated sufficiently, with or without a soluble halide salt catalyst, to form the products. Advantageously this method can provide cyclotetrasiloxanes having water-sensitive radicals such as silicon-bonded chlorine atoms and/or silicon-bonded acyl chloride radicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.