Patent US3570062A successfully refreshed from Google Patents.
Patent US3883438A successfully refreshed from Google Patents.
US3883438A
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US
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Absorbent composition
Assignee: Hull-Smith Chemicals Inc
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Filing: 1973-06-23
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Granted: 1975-05-13
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Expires: 1993-06-23
Abstract
Abstract This invention provides an absorbent composition comprising a reactant product of (1) amines or amides; (2) carbon disulfide, or carbonyl sulfide; (3) polyvalent metal ions; and, (4) a waterdispersable reactive polymeric material. A water-soluble silicate may be present as an optional material during the reaction. The reaction is carried out in an alkaline water solution or dispersion, and the above noted absorbent composition then precipitates. The resulting absorbent composition may be used as an ion exchange medium; to form lakes by absorption of dyes soluble or dispersable in water or water-immiscible solvents; to absorb from water solutions or dispersions of toxic or otherwise objectionable materials such as chromates, lead or mercury salts, etc.; to absorb dye intermediates, which when absorbed may be further reacted to form dyes which remain on the composition of this invention; to coat paper and facilitating ink absorption on paper; to manufacture pigments which blend readily in oleophylic vehicles, as well as in hydrophylic vehicles.
Inventors
- 👤 Robert K Remer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:56
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; C; C02; C02F; C02F1/00; C02F1/28; C02F1/285; C02F1/286; C09; C09B; C09B41/00; C09B63/00; C09B69/00; C09B69/02; C09K; C09K3/00; D; D06; D06P; D06P1/00; D06P1/02; D06P1/12; D21; D21H; D21H19/00; D21H19/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
61 words
AN ABSORBENT COMPOSITION COMPRISING AN EFFECTIVE AMOUNT OF THE REACTION PRODUCT FORMED IN AN ALKALINE AQUEOUS MEDIUM OF POLYVALENT METAL IONS, AMINE OR AMIDE COMPOUND, CARBON DISULFIDE, AND A MAJOR AMOUNT OF WATER-DISPERSIBLE OR AMMONIACAL-DISPERSIBLE REACTIVE HIGH MOLECULAR WEIGHT COMPOUND OR POLYMER MATERIAL, WHEREIN THE AMOUNT OF CARBON DISULFIDE IS SUFFICIENT TO REACT WITH SUBSTANTIALLY ALL OF THE AMINE OR AMIDE.
Claim 2
Dependent Claim
61 words
AN ABSORBENT COMPOSITION COMPRISING AN EFFECTIVE AMOUNT OF THE REACTION PRODUCT FORMED IN AN ALKALINE AQUEOUS MEDIUM OF POLYVALENT METAL IONS, AMINE OR AMIDE COMPOUND, CARBON DISULFIDE, AND A MAJOR AMOUNT OF WATER-DISPERSIBLE OR AMMONIACAL-DISPERSIBLE REACTIVE HIGH MOLECULAR WEIGHT COMPOUND OR POLYMER MATERIAL, WHEREIN THE AMOUNT OF CARBON DISULFIDE IS SUFFICIENT TO REACT WITH SUBSTANTIALLY ALL OF THE AMINE OR AMIDE.
Claim 3
Dependent Claim
43 words
The reaction product of claim 1 wherein the water-dispersible or ammoniacal-dispersible reactive high molecular weight compound or polymer material is selected from the group consisting of polymers of unsaturated carboxylic acid, epoxy, polyamide, alpha cellulose, polyester, soya protein, gelatin, casein, and mixtures thereof.
Claim 4
Dependent Claim
13 words
The absorbent composition of claim 1 wherein the amine compounds are alkanol amines.
Claim 5
Dependent Claim
109 words
The composition of claim 1 in which the amine or amide compound is selected from the group which includes dicyandiamide; urea; thiourea; 2-alkyl imidazoline in which the alkyl group contains 2-22 carbon atoms; 2-alkyl imidazolines in which the alkyl substituent has 2-22 carbon atoms, and which is also substituted in the 1 positioN with hydroxy ethyl group; amides of fatty acids having 2-20 carbon atoms; primary, secondary and tertiary aliphatic amines having 8-18 carbon atoms; aliphatic diamines; 1, 3-propylene diamine; N-tallow-1, 3 propylene diamine; hydroxy amines; 2-(2-amino ethoxy)ethanol, amino ethanolamine and monethanolamine; aniline, toluidine and xylidene; cyclohexylamine and dicyclohexylamine; phenol diethanolamine; phenol ethylethanolamine, and N-tolyl diethanolamine, and mixtures thereof.
Claim 6
Dependent Claim
27 words
The reaction product of claim 1 wherein the product is produced in a reaction system in which the carbon disulfide is added as an emulsion in water.
Claim 7
Dependent Claim
66 words
The absorbent composition of claim 1 in which the water-dispersible or ammoniacal-dispersible reactive high molecular weight compound or polymer material is selected from the group consisting of aliphatic unsaturated carboxylic acids having at least one carboxyl group per molecule and two or more unsaturations per molecule, and polymers of compounds having two or more carboxyl groups per molecule and at least one aliphatic unsaturation per molecule.
Claim 8
Dependent Claim
112 words
An absorbent composition comprising an effective amount of the reaction product formed in an alkaline aqueous medium of polyvalent metal ions, amine or amide compound, carbon disulfide, and a major amount of water-dispersible copolymer of styrene and maleic anhydride, wherein the weight of the water-dispersible copolymer is greater than the combined weight of the amine or amide compound and carbon disulfide, and wherein said amine or amide compound is used in an amount sufficient to provide at least 5 percent by weight based on the weight of the copolymer used, and in which the carbon disulfide is used in an amount sufficient to react with substantially all of said amine or amide.
Claim 9
Dependent Claim
112 words
An absorbent composition comprising an effective amount of the reaction product formed in an alkaline aqueous medium of polyvalent metal ions, amine or amide compound, carbon disulfide, and a major amount of water-dispersible copolymer of styrene and maleic anhydride, wherein the weight of the water-dispersible copolymer is greater than the combined weight of the amine or amide compound and carbon disulfide, and wherein said amine or amide compound is used in an amount sufficient to provide at least 5 percent by weight based on the weight of the copolymer used, and in which the carbon disulfide is used in an amount sufficient to react with substantially all of said amine or amide.
Claim 10
Dependent Claim
28 words
The absorbent composition of claim 7 wherein the water-dispersible reactive polymeric material is selected from the group consisting of low molecular weight copolymers of styrene and maleic anhydrides.
Claim 11
Dependent Claim
17 words
The absorbent composition of claim 8 wherein said copolymers have a molecular weight from 1600 to 2200.
Claim 12
Dependent Claim
59 words
The absorbent composition of claim 7 wherein said product is formed in said alkaline aqueous medium by first admixing said polyvalent metal ions, said amine or amide compound, and said major amount of copolymers of styrene and maleic anhydride, and thereafter admixing said carbon disulfide in an amount sufficient to react with substantially all of said amine or amide.
Claim 13
Dependent Claim
19 words
The absorbent composition of claim 10 wherein a water soluble silicate is also present in said aqueous alkaline medium.
Claim 14
Dependent Claim
113 words
An absorbent composition comprising an effective amount of the reaction product formed in an alkaline aqueous medium by first admixing polyvalent metal ions, amine or amide compound, and a major amount of water-dispersible copolymer of styrene and maleic anhydride, and admixing carbon disulfide with the preceding ingredients at a temperature in the range 100*-110*F., wherein the amount of water-dispersible copolymer is greater than the combined weight of said amine or amide and carbon disulfide, wherein the amount of said amine or amide is at least 5 percent based on the weight of the copolymer, and wherein the amount of carbon disulfide is sufficient to react with substantially all of the amine or amide.
Claim 15
Dependent Claim
113 words
An absorbent composition comprising an effective amount of the reaction product formed in an alkaline aqueous medium by first admixing polyvalent metal ions, amine or amide compound, and a major amount of water-dispersible copolymer of styrene and maleic anhydride, and admixing carbon disulfide with the preceding ingredients at a temperature in the range 100*-110*F., wherein the amount of water-dispersible copolymer is greater than the combined weight of said amine or amide and carbon disulfide, wherein the amount of said amine or amide is at least 5 percent based on the weight of the copolymer, and wherein the amount of carbon disulfide is sufficient to react with substantially all of the amine or amide.
References Cited (Backward Citations)
GB1029055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |