Process for preparing alkoxylated cross linking agents by preparing (a) an aqueous alkanolic alkoxylated amino resin (b) azeotropic distillation and (c) distilling excess alcohol
US4297264A · kind A · utility
2Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Jun 6, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G12/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process for the preparation of alkoxylated formaldehyde-amino compound resins. By using a sequential procedure, and an alkanol of up to 8 carbon atoms it is possible to remove both the water in the aqueous formaldehyde used and the water from the alkoxylation reaction azeotropically. The products of this invention afford resins of better quality, especially in terms of color and clarity, than the products derived from alcoholic formaldehyde solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.