Process for the manufacture of an aqueous solution of polyamide-epichlorohydrin resin having low levels of free epichlorohydrin and related hydrolysis products
US6057420A · kind A · utility
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5References
1Claims
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Key dates
| Filing date | Jan 19, 1994 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Jan 19, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/55
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for lowering the amount of epichlorohydrin and related hydrolysis compounds contained in paper strength enhancing resins by treating an aqueous solution of the resin with an adsorbent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.