Urethane catalysis
US4286073A · kind A · utility
14Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1980 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Jul 28, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydrolytically stable premix compositions for preparation of urethane foams are prepared by employing as the organotin catalyst in such premix composition a di- or tri-alkyltin sulfonate corresponding to the formula EQU R.sub.4-n -Sn(O.sub.3 SR').sub.n wherein R is an alkyl radical of 1 to 8 carbon atoms; R' is an alkyl, phenyl, or alkyl phenyl radical of 1 to 8 carbon atoms and n is 1 or 2. Examples include: dibutyltin bis-methanesulfonate, dibutyltin bis-benzenesulfonate, dimethyltin bis-benzenesulfonate, dimethyltin bis-benzenesulfonate, dioctyltin bis-methanesulfonate and dibutyltin bis-toluenesulfonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.