Accession Number:

AD0645722

Title:

THERMAL STABILITY OF SOME METALLOSILOXANES,

Descriptive Note:

Corporate Author:

SUSSEX UNIV BRIGHTON (ENGLAND)

Personal Author(s):

• Bedford,J. A.
• LeGrow,G. E.

Report Date:

1966-09-01

Pagination or Media Count:

22.0

Abstract:

In a study of the inherent thermal stability of metallosiloxane systems, some model compounds were prepared in a pure state and their behaviour on heating in absence of air was examined. The compounds studied were a Me3SiOnM, where M Sin4, Gen4, Snn4, Tin4, and Aln3 b Et3SiO3Al and Et3SiO4Ti c Ph3SiO4Sn, Ph3SiO4Ti and PhSiO3Al. It is concluded that introduction of M-O-Si linkages into polysiloxanes is most unlikely to lead to an increase in thermal stability. In liquid polymers it will, exept when MGe, lead to a marked fall in stability, but in solid systems the thermal stability could be acceptable if other desirable properties were present. The marked hydrolytic instability of the M-O-Si linkages, except when MGe, will place a severe limitation on the usefulness of polymers containing them. Author

Descriptors:

• *POLYMERS
• *ORGANOMETALLIC COMPOUNDS
• *SILOXANES
• *SILICONES
• THERMAL STABILITY
• THERMAL STABILITY
• THERMAL STABILITY
• STABILIZATION
• DECOMPOSITION
• PYROLYSIS
• GERMANIUM COMPOUNDS
• TIN COMPOUNDS
• TITANIUM COMPOUNDS
• ALUMINUM COMPOUNDS
• CHEMICAL BONDS
• HYDROLYSIS
• UNITED KINGDOM

Subject Categories:

• Physical Chemistry
• Polymer Chemistry
• Lubricants and Hydraulic Fluids
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE