Solutions of perhalogenated compounds

Details Solutions of perhalogenated compounds Solutions of perhalogenated compounds

1989-06-05

1990-10-16

Simmons, David

Compositions

Etching or brightening compositions

Inorganic acid containing

252 794, 134 3, 134 38, 134 40, 134 41, C23F 102

Patent

active

049632833

ABSTRACT:
Perhalogenated compounds, such as perfluorinated surfactants, for inclusion in aqueous systems, are provided in a cosolvent system consisting essentially of one or more acidic phosphorous-containing compounds selected from phosphoric or phosphorous acids, water-soluble di- or polyphosphonic or phosphinic acids and water-soluble salts of any of the aforesaid, for example 1-hydroxyethylidene 1,1-diphosphonic acid, and sufficient water, if required, to form a solution. Such solutions may be included with strongly acidic and/or peroxygen compositions, for example sulphuric acid or Caro's acid and avoid the need for contamination with organic co-solvents.

REFERENCES:
patent: 4080246 (1978-03-01), Battisti et al.
patent: 4196060 (1980-04-01), Patrie et al.
patent: 4681657 (1987-07-01), Hwang et al.
patent: 4781854 (1988-11-01), Overton et al.
Chem. Abs., vol. 89, 1978, No. 148913, EP-A-256284, EP-A-209228.

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