US4152345A
Expired / Lapsed
US
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Metal chelates
Assignee: WR Grace and Co
•
Filing: 1978-03-10
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Granted: 1979-05-01
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Expires: 1998-03-10
Abstract
Abstract An iron, copper, cobalt, manganese, chromium, nickel, zinc, cadmium, molybdenum, or lead chelate of a novel chelating agent having the formula ##STR1## in which (A) EACH OF X 1 , X 2 , X 3 , and X 4 is a member selected from the group consisting of (i) hydrogen; (ii) an alkyl group having 1-4 carbon atoms; (iii) --CN; (iv) --SO 3 M 1 ; (v) --COOM 1 ; (vi) --OM 3 ; (vii) --NO 2 ; (viii) --OH; and ##STR2## IN WHICH EACH OF R 1 and R 2 is an alkyl group having 1-4 carbon atoms; (b) each of M 1 , M 2 , M 3 , and M 4 is a member selected from the group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) 1/2 an alkaline earth metal ion; and (vi) an ammonium ion having the formula ##STR3## in which each of R 3 , R 4 , R 5 , and R 6 is a member selected from the group consisting of (A) hydrogen; (B) an alkyl group having 1-4 carbon atoms; and (C) a hydroxy-alkyl group having 1-4 carbon atoms; and (c) Z is a member selected from the group consisting of (i) hydrogen; and (ii) hydroxyl.
Inventors
- 👤 Roger R. Gaudette
- 👤 John L. Ohlson
- 👤 Patricia M. Scanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:21
CPC Classifications
C; C07; C07F; C07F15/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
151 words
A metal chelate of a compound having the formula: ##STR55## in which: (a) each X is a member selected from a first group consisting of (i) hydrogen; (ii) an alkyl group having 1-4 carbon atoms; (iii) --SO 3 M; and (iv) --COOM; (b) M is a member selected from a second group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) 1/2 an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR56## in which each of R 1 , R 2 , R 3 , and R 4 is a member selected from a third group consisting of (A) hydrogen; (B) an alkyl group having 1-4 carbon atoms; and (C) a hydroxyalkyl group having 1-4 carbon atoms; and (c) Z is H or OH, the metal being selected from the group consisting of iron, copper, cobalt, manganese, chromium, nickel, zinc, cadmium, molybdenum, and lead.
Claim 2
Dependent Claim
151 words
A metal chelate of a compound having the formula: ##STR55## in which: (a) each X is a member selected from a first group consisting of (i) hydrogen; (ii) an alkyl group having 1-4 carbon atoms; (iii) --SO 3 M; and (iv) --COOM; (b) M is a member selected from a second group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) 1/2 an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR56## in which each of R 1 , R 2 , R 3 , and R 4 is a member selected from a third group consisting of (A) hydrogen; (B) an alkyl group having 1-4 carbon atoms; and (C) a hydroxyalkyl group having 1-4 carbon atoms; and (c) Z is H or OH, the metal being selected from the group consisting of iron, copper, cobalt, manganese, chromium, nickel, zinc, cadmium, molybdenum, and lead.
Claim 3
Dependent Claim
12 words
The metal chelate of claim 1 in which the metal is iron.
Claim 4
Dependent Claim
12 words
The metal chelate of claim 2 in which the iron is iron(III).
Claim 5
Dependent Claim
17 words
The metal chelate of claim 1 in which M is a hydrogen ion or a sodium ion.
Claim 6
Dependent Claim
143 words
A metal chelate of a compound having the formula: ##STR57## in which: (a) X 1 and X 2 are members selected from a first group consisting of (i) hydrogen; (ii) an alkyl group having 1-4 carbon atoms; (iii) --SO 3 M; and (iv) 'COOM; (b) M is a member selected from a second group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) 1/2 an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR58## in which R 1 , R 2 , R 3 , and R 4 are members selected from a third group consisting of (A) hydrogen; (B) an alkyl group having 1-4 carbon atoms; and (C) a hydroxyalkyl group having 1-4 carbon atoms; and (c) Z is -H or -OH, the metal being iron, copper, cobalt, manganese chromium, zinc, cadmium, molybdenum, or lead.
Claim 7
Dependent Claim
143 words
A metal chelate of a compound having the formula: ##STR57## in which: (a) X 1 and X 2 are members selected from a first group consisting of (i) hydrogen; (ii) an alkyl group having 1-4 carbon atoms; (iii) --SO 3 M; and (iv) 'COOM; (b) M is a member selected from a second group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) 1/2 an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR58## in which R 1 , R 2 , R 3 , and R 4 are members selected from a third group consisting of (A) hydrogen; (B) an alkyl group having 1-4 carbon atoms; and (C) a hydroxyalkyl group having 1-4 carbon atoms; and (c) Z is -H or -OH, the metal being iron, copper, cobalt, manganese chromium, zinc, cadmium, molybdenum, or lead.
Claim 8
Dependent Claim
12 words
The metal chelate of claim 5 in which the metal is iron.
Claim 9
Dependent Claim
12 words
The metal chelate of claim 6 in which the iron is iron(III).
Claim 10
Dependent Claim
17 words
The metal chelate of claim 7 in which M is a hydrogen ion or a sodium ion.
Claim 11
Dependent Claim
21 words
An iron chelate of a compound having the formula ##STR59## in which M is a hydrogen ion or a sodium ion.
Claim 12
Dependent Claim
21 words
An iron chelate of a compound having the formula ##STR59## in which M is a hydrogen ion or a sodium ion.
Claim 13
Dependent Claim
15 words
The iron chelate of the compound of claim 9 in which the iron is iron(III).
Claim 14
Dependent Claim
21 words
An iron chelate of a compound having the formula ##STR60## in which M is a hydrogen ion or a sodium ion.
Claim 15
Dependent Claim
21 words
An iron chelate of a compound having the formula ##STR60## in which M is a hydrogen ion or a sodium ion.
Claim 16
Dependent Claim
15 words
The iron chelate of the compound of claim 11 in which the iron is iron(III).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |