Use of tin derivatives as latent polycondensation catalysts, and premix containing them
US6187711A · kind A · utility
15Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1996 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Oct 7, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Tin derivatives for use as oxygen-activated latent polycondensation catalysts. Said tin derivatives having a formula R.sub.1 -Y.sub.n -R.sub.4, wherein R.sub.1 and R.sub.4 together form a divalent group or a single bond which insures the formation of a ring with n being 5, 6 or 7, the radicals Y, which may be similar or different, represent a tin-membered chain unit of a structure R'-Sn-R", wherein R' and R", which may be similar or different are a hydrogen or a hydrocarbon radical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.