Polymeric organo-phosphonates containing phosphato groups
First Claim
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1. A PROCESS FOR PREPARING RESINOUS POLYMERIC ORGANOPHOSPHONATES CONTAINING PHOSPHATO GROUPS WHICH COMPRISES HEATING IN THE PRESENCE OF AN ANHYDROUS ALKALINEEARTH HALIDE CONDENSATION CATALYST A MIXTURE COMPRISING APPROXIMATELY 50.0 MOLE PERCENT OF A DIHYDROXY AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF A DIHYDROXYBENZENE, A DIHYDROXY DIPHENYL, AND A DIHYDROXYDIPHENYL SULFONE, AND FROM 0.1 TO 49.9 MOLE PERCENT OF AN ORGANO-PHOSPHONIC ACID DICHLORIDE HAVING THE GENERAL FORMULA:
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1 Claim
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1. A PROCESS FOR PREPARING RESINOUS POLYMERIC ORGANOPHOSPHONATES CONTAINING PHOSPHATO GROUPS WHICH COMPRISES HEATING IN THE PRESENCE OF AN ANHYDROUS ALKALINEEARTH HALIDE CONDENSATION CATALYST A MIXTURE COMPRISING APPROXIMATELY 50.0 MOLE PERCENT OF A DIHYDROXY AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF A DIHYDROXYBENZENE, A DIHYDROXY DIPHENYL, AND A DIHYDROXYDIPHENYL SULFONE, AND FROM 0.1 TO 49.9 MOLE PERCENT OF AN ORGANO-PHOSPHONIC ACID DICHLORIDE HAVING THE GENERAL FORMULA:
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Current AssigneeHarry W. Coover Jr, Marvin A. Mccall
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Original AssigneeHarry W. Coover Jr, Marvin A. Mccall
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InventorsCoover, Harry W. Jr., Mccall, Marvin A.
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Application NumberUS03/308,929Time in Patent Office1,077 DaysField of SearchUS Class Current528/169CPC Class CodesC08G 79/04 Phosphorus linked to oxygen...
