US4000083A
Expired / Lapsed
US
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Sequestering agents
Assignee: Purac Biochem BV
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Filing: 1974-05-06
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Granted: 1976-12-28
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Expires: 1994-05-06
Abstract
Abstract A sequestering agent containing a mixture of one or more organic compounds having a carboxylic acid or carboxylate group and at least vicinal hydroxy groups adjacent to the carboxyl moiety, and a compound selected from boric acid, borax and alkali metal borates, is described.
Inventors
- 👤 Jan G. Heesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:52
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2086; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/105; C11D3/02; C11D3/04; C11D3/042; C11D3/046; C11D3/22; C11D3/221; C11D3/39; C11D3/3942
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A sequestering agent, consisting of a mixture of one or more organic compounds, each containing from 4 to 6 carbon atoms, one or two terminal carboxylic acid or alkali metal carboxylate groups and having at least two vicinal hydroxy groups, and one or more of a boron compound selected from the group consisting of boric acid, borax and alkali metal perborates, wherein said organic compound has at least two vicinal hydroxy groups in the cis- position, one hydroxy group being in the α-position to said carboxylic acid or alkali metal carboxylate group, and the ratio of boron to said organic compound is in the range of from 0.25-3.0:1.
Claim 2
Dependent Claim
108 words
A sequestering agent, consisting of a mixture of one or more organic compounds, each containing from 4 to 6 carbon atoms, one or two terminal carboxylic acid or alkali metal carboxylate groups and having at least two vicinal hydroxy groups, and one or more of a boron compound selected from the group consisting of boric acid, borax and alkali metal perborates, wherein said organic compound has at least two vicinal hydroxy groups in the cis- position, one hydroxy group being in the α-position to said carboxylic acid or alkali metal carboxylate group, and the ratio of boron to said organic compound is in the range of from 0.25-3.0:1.
Claim 3
Dependent Claim
96 words
A sequestering agent according to claim 1 consisting of a mixture of one or more organic compounds, each containing from 4 to 6 carbon atoms, one or two terminal carboxylic acid or alkali metal carboxylate groups and having at least two vicinal hydroxy groups, and one or more of a boron compound selected from the group consisting of boric acid, borax and alkali metal perborates, wherein said organic compound has at least two vicinal hydroxy groups in the cis- position, one hydroxy group being in the α-position to said carboxylic acid or alkali metal carboxylate group.
Claim 4
Dependent Claim
17 words
A sequestering agent according to claim 2 wherein the ratio of boron to organic compound is 1-2:1.
Claim 5
Dependent Claim
25 words
A sequestering agent according to claim 2, wherein said organic compound is selected from the group consisting of glucaric acid and its alkali metal salt.
Claim 6
Dependent Claim
25 words
A sequestering agent according to claim 4, wherein said organic compound is selected from the group consisting of potassium hydrogen glucarate and glucaric acid lactone.
Claim 7
Dependent Claim
139 words
The use of a sequestering agent consisting of a mixture of one or more organic compounds, each containing from 4 to 6 carbon atoms, one or two terminal carboxylic acid or alkali metal carboxylate groups and having at least two vicinal hydroxy groups, and one or more of a boron compound selected from the group consisting of boric acid, borax and alkali metal perborates, wherein said organic compound has at least two vicinal hydroxy groups in the cis- position, one hydroxy group being in the α-position to said carboxylic acid or alkali metal carboxylate group, and the ratio of boron to said organic compound is in the range of from 0.25-3.0:1, in a detergent composition consisting essentially of said sequestering agent, a linear alkylbenzene sulfonate, a nonionic synthetic detergent, sodium sulfate, sodium carboxymethyl cellulose and ethylene diamine tetraacetic acid.
Claim 8
Dependent Claim
139 words
The use of a sequestering agent consisting of a mixture of one or more organic compounds, each containing from 4 to 6 carbon atoms, one or two terminal carboxylic acid or alkali metal carboxylate groups and having at least two vicinal hydroxy groups, and one or more of a boron compound selected from the group consisting of boric acid, borax and alkali metal perborates, wherein said organic compound has at least two vicinal hydroxy groups in the cis- position, one hydroxy group being in the α-position to said carboxylic acid or alkali metal carboxylate group, and the ratio of boron to said organic compound is in the range of from 0.25-3.0:1, in a detergent composition consisting essentially of said sequestering agent, a linear alkylbenzene sulfonate, a nonionic synthetic detergent, sodium sulfate, sodium carboxymethyl cellulose and ethylene diamine tetraacetic acid.
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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |