Michael addition adducts as additives for paper and papermaking
US7902312B2 · kind B2 · utility
12Cited by
12References
23Claims
0Family size
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Key dates
| Filing date | May 18, 2007 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Oct 4, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F222/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Several Michael addition adducts of vinylamines with α,β. -unsaturated alkyl carbonyl compounds including amides, esters and acids, particularly acrylamide are presented. Additionally, a process for producing these Michael addition adducts is described. These adducts are generally useful in the manufacture of paper and are particularly useful as dry strength additives to make paperboard products using a papermaking machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.