Phosphonic acid based ion exchange resins
First Claim
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1. A polymeric ion exchange resin for extracting metal ions from a liquid waste stream, including:
- (a) a first polymerizable component selected from the group consisting of vinylidene diphosphonic acid and alkyl/aryl esters of said diphosponic acid;
(b) a second polymerizable component selected from the group consisting of an acrylamide and a styrene;
(c) a third polymerizable component of a monomer selected from the group consisting of acrylonitrile, methyl acrylate and methyl methacrylate; and
(d) a fourth polymerizable component of a copolymer selected from the group consisting of a divinylic and a trivinylic cross linking agent.
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Abstract
An ion exchange resin for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene disphosphonic acid with styrene, acrylonitrile and divinylbenzene.
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Citations
15 Claims
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1. A polymeric ion exchange resin for extracting metal ions from a liquid waste stream, including:
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(a) a first polymerizable component selected from the group consisting of vinylidene diphosphonic acid and alkyl/aryl esters of said diphosponic acid; (b) a second polymerizable component selected from the group consisting of an acrylamide and a styrene; (c) a third polymerizable component of a monomer selected from the group consisting of acrylonitrile, methyl acrylate and methyl methacrylate; and (d) a fourth polymerizable component of a copolymer selected from the group consisting of a divinylic and a trivinylic cross linking agent. - View Dependent Claims (2, 3, 4)
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5. A polymeric ion exchange resin for extracting metal ions from a liquid waste stream, comprising a copolymer prepared by copolymerizing components including:
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(a) a first polymerizable component selected from the group consisting of vinylidene diphosphonic acid and alkyl/aryl esters thereof of from about 5-95 weight percent; (b) a second polymerizable component consisting essentially of styrene from about 1-95 weight percent; (c) a third polymerizable component selected from the group consisting essentially of acrylonitrile of about 10-95 weight percent; and (d) a fourth polymerizable component selected from the group consisting of divinylbenzene of about 5-50 weight percent and 2-ethylhexanol. - View Dependent Claims (6, 7, 8)
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9. The ion exchange resin for extracting metal ions from a liquid waste stream, comprising a copolymer having copolymerized components including:
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(a) a first polymerizable component selected from the group consisting of vinylidene diphosphonic acid and alkyl/aryl esters of said diphosphonic acid; (b) a second polymerizable component of an acrylamide; and (c) a third polymerizable component consisting essentially of acrylonitrile. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification