Method for producing silicone step-growth elastomers from dual functional siloxanes
US9145474B2 · kind B2 · utility
8Cited by
2References
18Claims
0Family size
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Key dates
| Filing date | Mar 7, 2014 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Mar 7, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A convenient, practical method for forming elastomers from dual functional siloxanes that cure by a step-growth mechanism is provided. The method involves preparing a first mixture containing a first telechelic siloxane and a hydrosilylation catalyst; preparing a second mixture containing a second telechelic siloxane and a dual functional siloxane having two different polymer termini; and reacting the first mixture with the second mixture to produce the siloxane elastomer. The first and second mixtures may be stored separately until time of use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.