US4069249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N,N-di-(hydroxybenzyl)-trimethylene diaminediacetic acids
Assignee: WR Grace and Co
•
Filing: 1975-11-11
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Granted: 1978-01-17
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Expires: 1995-11-11
Abstract
Abstract A novel chelating agent having the formula <IMAGE> in whichA. EACH OF X1, X2, X3, and X4 is a member selected from the group consisting of (i) hydrogen; (ii) an alkyl group having 1-4 carbon atoms; (iii) -CN; (iv) -So3M1; (v) -COOM1; (vi) -OM3; (vii) -NO2; (viii) -OH; and (ix) <IMAGE> in which each of R1 and R2 is an alkyl group having 1-4 carbon atoms; B. EACH OF M1, M2, M3, and M4 is a member selected from the group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) one-half an alkaline earth metal ion; and (vi) an ammonium ion having the formula <IMAGE> in which each of R3, R4, R5, and R6 is a member selected from the 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 a member selected from the group consisting of (i) hydrogen; and (ii) hydroxyl.
Inventors
- 👤 Roger Robert Gaudette
- 👤 John Leonard Ohlson
- 👤 Patricia Marie Scanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:18
CPC Classifications
C; C07; C07F; C07F15/00; C07C; C07C255/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
120 words
A compound having the formula ##STR57## 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) one-half an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR58## 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.
Claim 2
Dependent Claim
120 words
A compound having the formula ##STR57## 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) one-half an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR58## 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.
Claim 3
Dependent Claim
16 words
The compound of claim 1 in which M is a hydrogen ion or a sodium ion.
Claim 4
Dependent Claim
6 words
A compound having the formula ##STR59##
Claim 5
Dependent Claim
6 words
A compound having the formula ##STR59##
Claim 6
Dependent Claim
121 words
A compound having the formula ##STR60## 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; and (iii) one-half an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR61## 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.
Claim 7
Dependent Claim
121 words
A compound having the formula ##STR60## 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; and (iii) one-half an alkaline earth metal ion; and (iv) an ammonium ion having the formula ##STR61## 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.
Claim 8
Dependent Claim
16 words
The compound of claim 4 in which M is a hydrogen ion or a sodium ion.
Claim 9
Dependent Claim
6 words
A compound having the formula ##STR62##
Claim 10
Dependent Claim
6 words
A compound having the formula ##STR62##
Claim 11
Dependent Claim
6 words
A compound having the formula ##STR63##
Claim 12
Dependent Claim
6 words
A compound having the formula ##STR63##
Claim 13
Dependent Claim
6 words
A compound having the formula ##STR64##
Claim 14
Dependent Claim
6 words
A compound having the formula ##STR64##
References Cited (Backward Citations)
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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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |