Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-12-13
1992-07-07
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
424 7818, 521 32, 5253294, C08F 830
Patent
active
051284200
ABSTRACT:
A method for preparing hydroxamic acid polymers from primary amide polymers wherein polyvinyl monomers such as polyacrylamide are reacted with hydroxyl amine in aqueous solution at room temperature. The low reaction temperature is crucial to producing a high yield (70%) of polymer with hydroxamic acid groups and having a low carboxylic acid content (less than 15%, preferably less than 3%). The polymers display high metal affinity over a broad pH range.
The polymers are particularly useful for biomedical applications due to the low carboxylic acid content and for the removal and purification of metals due to the high binding constants and rapid reaction rates.
REFERENCES:
patent: 2959574 (1960-11-01), Woodberry
patent: 4536296 (1985-08-01), Vio
Cravalho Ernest G.
Domb Abraham J.
Golomb Gershon
Langer Robert S.
Laurencin Cato T.
Henderson Christopher
Massachusetts Institute of Technology
Van Riet Frank M.
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