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US 11,773,201 B2Granted
Bisphenol-S containing mannich polycondensation product
AssigneeKing Fahd University of Petroleum and Minerals
InventorsOthman Charles Sadeq Al Hamouz, Mohammed Estatie, Tawfik Abdo Saleh Awadh, Mohamed A. Morsy
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Abstract
Crosslinked polymers made up of polymerized units of cyclic diaminoalkane, aldehyde and bisphenol-S or melamine. A method for removing heavy metals, such as Pb(II) from an aqueous solution or an industrial wastewater sample with these crosslinked polymers is introduced. A process of synthesizing the crosslinked polymers is also described.
Claims15
A crosslinked polymer, in the form of a Mannich polycondensation product, comprising reacted units of
- a first monomer of formula (I)
- or a solvate thereof, a stereoisomer thereof, or a mixture thereof;
- a bisphenol-S compound represented by formula (II)
- or a salt thereof, a solvate thereof, a tautomer thereof, a stereoisomer thereof, or a mixture thereof;
- and
- an aldehyde of formula (III)
- or a salt thereof, a solvate thereof, a stereoisomer thereof, or a mixture thereof, wherein:
- m is 2 or 3;
- and
- n is 2 or 3;
- wherein the crosslinked polymer has Y number of repeating units of formula (V);
- wherein Y is 2 to 10,000;
- wherein the crosslinked polymer has a BET surface area in the range of 10-80 m2/g.
10 more elements
Dependencies are inferred from the claim text.