Aqueous sulfomethylated melamine gel-forming compositions
US4772641A · kind A · utility
8Cited by
8References
5Claims
0Family size
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Key dates
| Filing date | Jun 20, 1985 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Jun 20, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/5086
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous gel-forming compositions are prepared by reacting for 1-10 hours at 50.degree.-95.degree. C., melamine, formaldehyde and a sulfurous acid salt with the optional addition of a gel-modifying agent and/or a gelling agent which is added to the composition immediately prior to use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.