Phosphorus compounds

The present invention concerns novel phosphorus compounds which may be obtained by a process comprising reacting an acetylenic compound with hypophosphorous acid, or its salts. Compounds of formula (I), wherein each of R and R′ are independently selected from hydrogen, a hydroxyl group, a carboxyl g...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Davis, Keith Philip, Otter, Graham Philip, Woodward, Gary
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention concerns novel phosphorus compounds which may be obtained by a process comprising reacting an acetylenic compound with hypophosphorous acid, or its salts. Compounds of formula (I), wherein each of R and R′ are independently selected from hydrogen, a hydroxyl group, a carboxyl group, an alkyl, aryl or alkaryl group or a hydroxy or carboxy substituted alkyl, aryl or alkaryl group, provided that R and R′, together have a total of less than 23 carbon atoms, R″ may either be hydrogen or a CHR CRgroup or be selected from the same categories as R′″; R′″ is a group, or polymeric chain comprising from 1 to 100,000 groups, said group or groups being derived form at least one ethylenically unsaturated compound wherein the double bond is activated by an adjacent electron withdrawing group, and n is greater than 1 are novel, are useful corrosion inhibitors and are valuable intermediates in preparing telomers for use in water treatment.