IT1028216B - N-phosphonomethyl (sulphon)amides and ureas - sequestrants for metals - Google Patents

N-phosphonomethyl (sulphon)amides and ureas - sequestrants for metals

Info

Publication number
IT1028216B
IT1028216B IT1906675A IT1906675A IT1028216B IT 1028216 B IT1028216 B IT 1028216B IT 1906675 A IT1906675 A IT 1906675A IT 1906675 A IT1906675 A IT 1906675A IT 1028216 B IT1028216 B IT 1028216B
Authority
IT
Italy
Prior art keywords
sequestrants
metals
esp
aryloxy
alkoxy
Prior art date
Application number
IT1906675A
Other languages
Italian (it)
Inventor
Daniel J Scharf
Howard A Chamberlin
Original Assignee
Hooker Chemicals Plastics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/431,195 external-priority patent/US3939226A/en
Application filed by Hooker Chemicals Plastics Corp filed Critical Hooker Chemicals Plastics Corp
Application granted granted Critical
Publication of IT1028216B publication Critical patent/IT1028216B/en

Links

Abstract

Phosphonic acids of formula (I) are new: (R1 = OH, alkoxy or aryloxy; R = ZCOO-, ZSO2- or (R1)2; Z = OH, alkyl aryl, alkoxy or aryloxy). (I) are metal ion sequestrants and flame retardants for cellulose, protein or artificial materials (esp. thermoplastic resins). They are used to sequester Ca, Cr, Cu, Ni, Sn, Fe, Al, Co. Pt, Pd, Rh, Ir, Ru, Os, Zr, Hf, rare earths and actinides and are used to improve electrochemical deposition of precious metals (esp. Au or its allows from sulphite baths). Relatively small amts. of (I) are required for fire-retardancy and (I) does not crystallise or exude after incorporation into resins.
IT1906675A 1974-01-07 1975-01-07 N-phosphonomethyl (sulphon)amides and ureas - sequestrants for metals IT1028216B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/431,195 US3939226A (en) 1974-01-07 1974-01-07 Phosphonomethyl compounds

Publications (1)

Publication Number Publication Date
IT1028216B true IT1028216B (en) 1979-01-30

Family

ID=23710880

Family Applications (1)

Application Number Title Priority Date Filing Date
IT1906675A IT1028216B (en) 1974-01-07 1975-01-07 N-phosphonomethyl (sulphon)amides and ureas - sequestrants for metals

Country Status (1)

Country Link
IT (1) IT1028216B (en)

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