Polymerization of polysiloxanes
US4362855A · kind A · utility
4Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1981 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Apr 27, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High molecular weight organopolysiloxanes, e.g., polydimethylpolysiloxane oils and gums, are facilely and rapidly prepared by polymerizing/rearranging a lower molecular weight organopolysiloxane in the presence of a catalytically effective amount of an alkaline catalyst and a tris-(oxaalkyl)-amine accelerator having the formula (I): EQU N--CHR.sub.1 --CHR.sub.2 --O--CHR.sub.3 --CHR.sub.4 --O).sub.n R.sub.5 ].sub.3 (I).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.