Continuous production of 2-acrylamido-2-methylpropane-sulfonic acid in a small reactor integrated with acrylic polymer fiber production
US6448347B1 · kind B1 · utility
9Cited by
12References
22Claims
0Family size
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Key dates
| Filing date | Oct 22, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Oct 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Amidoalkanesulfonic acids are prepared by reacting a molar excess of an unsaturated nitrile, a source of SO3, and an olefin, in a substantially non-aqueous medium, and transferring the crude reaction product containing amidoalkanesulfonic acid, without substantial purification steps, into an apparatus for incorporation of the amidoalkanesulfonic acid into a copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.