Metal salts of polyacetylenic compounds and uses thereof
AssigneeAllied Corporation
InventorsAnthony F. Preziosi, Gordhanbhai N. Patel, Robert G. Denkewalter, Ray H. Baughman
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Abstract
Water-soluble polyacetylenic alkali metal salts from monomers and polymers of carboxymethyl urethanes of di-, tetra-, and hexayne diols, or from the corresponding diacids; useful in thermal and irradiation exposure indicators and/or in detection and/or removal of nonalkali metal ions dissolved in aqueous media.
Claims5
An acetylenic monomer of the formula [R(C.tbd.C).sub.a (CH.sub.2).sub.b (C.tbd.C).sub.b-1 ].sub.2 wherein a is 1 or 2;
- and b is 0 when a is 1;
- b is 0, 1, or 2 when a is 2;
- and (b-1) is taken as zero whenever b is zero;
- and wherein R is --(CH.sub.2).sub.n O(C.dbd.O)NHCH.sub.2 CO.sub.2 M, with n being an integer of from 1 to 10 and M being H or alkali metal.
An acetylenic monomer of the formula [R--(C.tbd.C).sub.a (CH.sub.2).sub.b (C.tbd.C).sub.b-1 ].sub.2 wherein a is 2 and b is 1 or 2;
- and wherein R is --(CH.sub.2).sub.n' CO.sub.2 M', n' being an integer from 1 to 4 and M' being an alkali metal.
An acetylenic monomer of the formula [R--(C.tbd.C).sub.a ].sub.2 wherein R is --(CH.sub.2).sub.n' CO.sub.2 M', a is 2, n' is an integer from 1 to 3 and M' is an alkali metal.
Dependencies are inferred from the claim text.