Process for reducing the free aldehyde content in N-alkylol amide monomers
US5415926A · kind A · utility
6Cited by
26References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Feb 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/60
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a process for the preparation of N-alkylol amide monomers wherein a polymerizable amide is reacted with an aldehyde, the improvement which comprises adjusting the pH of the resulting N-alkylol amide monomer to pH 10-11 and adding thereto an alkali or alkali earth metal borohydride at a temperature of -10.degree. to 20.degree. C. so as to convert the residual free aldehyde in the equilibrium mixture to the corresponding alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.