US3923679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of tetrahydrofuran polycarboxylic acids as detergent builders and complexing agents
Assignee: Monsanto Co
•
Filing: 1974-06-06
•
Granted: 1975-12-02
•
Expires: 1994-06-06
Abstract
Abstract Salts of tetrahydrofuran polycarboxylic acids represented by the formula wherein R1, R2, R3, R4 and R5 are hydrogen or carboxylic acid groups, at least one of R1, R2, R3 and R4 being a carboxylic acid group when R5 is a carboxylic acid group are useful as complexing agents and/or detergency builders. The ester forms of such compounds, as well as the acids are useful as intermediates for production of the salts.
Inventors
- 👤 John N Rapko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2096; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D307/24
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
27 words
A DETERGENT FORMULATION COMPRISING (A) FROM 1 TO 95% BY WEIGHT OF AN ALKALI METAL, AMMONIUM OR ALKANOL AMMONIUM SALT OF A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
27 words
A DETERGENT FORMULATION COMPRISING (A) FROM 1 TO 95% BY WEIGHT OF AN ALKALI METAL, AMMONIUM OR ALKANOL AMMONIUM SALT OF A COMPOUND REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
14 words
A formulation according to claim 1 containing from 5 to 75% of said salt.
Claim 4
Dependent Claim
19 words
A formulation according to claim 1 wherein Ra, Rd and Re are COOH and Rb and Rc are hydrogen.
Claim 5
Dependent Claim
13 words
The formulation of claim 1 wherein said salt is pentasodium monohydrogen tetrahydrofuran 2,2,3,4,5,5-hexacarboxylate.
Claim 6
Dependent Claim
13 words
The formulation of claim 1 wherein said salt is pentasodium monohydrogen tetrahydrofuran 2,2-trans-3,4,5,5-hexacarboxylate.
Claim 7
Dependent Claim
12 words
The formulation of claim 1 wherein said salt is hexasodium tetrahydrofuran 2,2-trans-3,4,5,5-hexacarboxylate.
Claim 8
Dependent Claim
12 words
The formulation of claim 1 wherein said salt is hexasodium tetrahydrofuran 2,2-trans-3,4,5,5-hexacarboxylate.
Claim 9
Dependent Claim
121 words
A machine dishwashing composition comprising (a) from 0 to 5% by weight of a surfactant selected from the group consisting of low-foaming anionic and non-ionic surfactants and mixtures thereof, (b) a chlorine providing material selected from the group consisting of potassium dichlorocyanurate; sodium dichlorocyanurate; ((mono-trichloro) tetra-(monopotassium dichloro)) penta-isocyanurate; (mono-trichlor) (mono-potassium dichloro) diisocyanurate; chlorinated trisodium phosphate, said chlorine providing material being present in an amount sufficient to provide from 0.5 to 2% by weight available chlorine, (c) from 5 to 30% by weight soluble sodium silicate having an SiO2 to Na2O mole ratio of from 1:1 to 3.2:1 and (d) from 5 to 90% by weight of an alkali metal, ammonium or alkanol ammonium salt of a compound represented by the formula
Claim 10
Dependent Claim
121 words
A machine dishwashing composition comprising (a) from 0 to 5% by weight of a surfactant selected from the group consisting of low-foaming anionic and non-ionic surfactants and mixtures thereof, (b) a chlorine providing material selected from the group consisting of potassium dichlorocyanurate; sodium dichlorocyanurate; ((mono-trichloro) tetra-(monopotassium dichloro)) penta-isocyanurate; (mono-trichlor) (mono-potassium dichloro) diisocyanurate; chlorinated trisodium phosphate, said chlorine providing material being present in an amount sufficient to provide from 0.5 to 2% by weight available chlorine, (c) from 5 to 30% by weight soluble sodium silicate having an SiO2 to Na2O mole ratio of from 1:1 to 3.2:1 and (d) from 5 to 90% by weight of an alkali metal, ammonium or alkanol ammonium salt of a compound represented by the formula
Claim 11
Dependent Claim
14 words
A formulation according to claim 8 containing from 20 to 75% of said salt.
Claim 12
Dependent Claim
19 words
A formulation according to claim 8 wherein Ra, Rd and Re are COOH and Rb and Rc are hydrogen.
Claim 13
Dependent Claim
13 words
The formulation of claim 8 wherein said salt is pentasodium monohydrogen tetrahydrofuran 2,2,3,4,5,5-hexacarboxylate.
Claim 14
Dependent Claim
13 words
The formulation of claim 8 wherein said salt is pentasodium monohydrogen tetrahydrofuran 2,2,-trans-3,4,5,5-hexacarboxylate.
Claim 15
Dependent Claim
12 words
The formulation of claim 8 wherein said salt is hexasodium tetrahydrofuran 2,2,3,4,5,5-hexacarboxylate.
Claim 16
Dependent Claim
12 words
The formulation of claim 8 wherein said salt is hexasodium tetrahydrofuran 2,2-trans-3,4,5,5-hexacarboxylate.
Claim 17
Dependent Claim
11 words
A formulation according to claim 8 containing at least 0.5% surfactant.
Claim 18
Independent Claim
49 words
A method of complexing ions selected from the group consisting of mEtal ions and alkaline earth metal ions in an aqueous medium containing said ions by providing in said aqueous medium a quantity of an alkali metal, ammonium or alkanol ammonium salt of a compound represented by the formula
Claim 19
Independent Claim
49 words
A method of complexing ions selected from the group consisting of mEtal ions and alkaline earth metal ions in an aqueous medium containing said ions by providing in said aqueous medium a quantity of an alkali metal, ammonium or alkanol ammonium salt of a compound represented by the formula
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |