Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof
Patent
1988-04-20
1991-09-10
Evans, J. E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus acids or salts thereof
558217, C07F 938, C07F 940
Patent
active
050475789
ABSTRACT:
Novel phosphonic acid-containing compounds such as (2-(4-ethenylphenyl)ethenyl)-phosphonic acid and esters thereof are disclosed. A method of preparation of the phosphonic acids comprising contacting a diethylenically unsaturated aromatic compound and phosphorus pentachloride in the presence of sulfur dioxide is also disclosed.
The compounds of this invention are useful as monomers for the preparation of polymers having enhanced anti-corrosive properties.
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McEwen Gerald K.
Schmidt Donald L.
Evans J. E.
The Dow Chemical Company
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