Carboxy hydroxamic acid polymers and their use as detergent addi

Details Carboxy hydroxamic acid polymers and their use as detergent addi Carboxy hydroxamic acid polymers and their use as detergent addi

1987-08-06

1989-10-17

Wax, Robert A.

Compositions

Water-softening or purifying or scale-inhibiting agents

252132, 252180, 252DIG2, 252DIG11, 5253276, 5253217, 526271, 5263076, 526311, 526933, C11D 320, C11D 337

Patent

active

048745391

ABSTRACT:
Polymeric carboxy hydroxamic acids useful as detergent additives are disclosed which are advantageously prepared from polyacrylic acid by first dehydrating the polyacrylic acid to form polyacrylic anhydride followed by reaction with a hydroxylamine compound.

REFERENCES:
patent: 2402604 (1946-06-01), Coffman
patent: 4040988 (1977-08-01), Benson et al.
patent: 4432884 (1984-02-01), Kawasaki et al.
Solmons, Organic Chemistry, 3rd Ed., NY, Wiley, 1984, pp. 792-793.
Fife et al., "Phase-Managed Organic Synthesis. 2. A New Polymer-Assisted Synthesis of Acid Anhydrides", Tetrahedron Lett. 1986, 27(41), 4933-4936.

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