GB750809A - Processes for treating hygroscopic material - Google Patents

Processes for treating hygroscopic material

Info

Publication number
GB750809A
GB750809A GB20556/53A GB2055653A GB750809A GB 750809 A GB750809 A GB 750809A GB 20556/53 A GB20556/53 A GB 20556/53A GB 2055653 A GB2055653 A GB 2055653A GB 750809 A GB750809 A GB 750809A
Authority
GB
United Kingdom
Prior art keywords
vinyl
polymer
hygroscopic material
solution
sodium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20556/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bergwerksgesellschaft Hibernia AG
Original Assignee
Bergwerksgesellschaft Hibernia AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bergwerksgesellschaft Hibernia AG filed Critical Bergwerksgesellschaft Hibernia AG
Publication of GB750809A publication Critical patent/GB750809A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/30—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/18—Nitrates of ammonium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer

Abstract

The formation of incrustations and caking on hygroscopic material, such as calcium, sodium and ammonium nitrates and table salt, is prevented by admixture with less than 1 per cent of a polymer of a vinyl compound which is polar in character such as acrylonitrile, methacrylonitrile, acrylic and methacrylic acids and their salts and esters, vinyl acetate, vinyl alcohol and vinyl pyrollidone, the polymer being formed in situ on the hygroscopic material by applying thereto the vinyl monomer which is then polymerized. In this process the monomer may be used as such or as an aqueous solution or emulsion or as a solution in an organic solvent such as acetone, methyl ethyl ketone, methyl, ethyl, propyl, butyl and amyl acetates, benzene, toluene, xylenes, methanol and ethanol. In an example an aqueous solution of acrylonitrile containing a mixture of ammonium persulphate and sodium bisulphite as a redox catalyst and a copper or silver salt as an activator is used.ALSO:The formation of incrustations and caking on hygroscopic material, such as calcium, sodium and ammonium nitrates and table salt is prevented by admixture with less than 1 per cent of a polymer of a vinyl compound which is polar in character such as acrylonitrile, methacrylonitrile, acrylic and metharacrylic acids and their salts and esters, vinyl acetate, vinyl alcohol and vinyl pyrollidone. The polymer may be applied to the hygroscopic material in solid form or in aqueous emulsion or solution, or solution in an organic solvent. Alternatively, the vinyl polymer may be formed in situ on the hygroscopic material by applying thereto the vinyl monomer which is then polymerized.ALSO:The formation of incrustations and caking on hygroscopic fertilizers, such as calcium, sodium and ammonium nitrates is prevented by admixture with less than 1 per cent of a polymer of a vinyl compound which is polar in character such as acrylonitirle, methacrylonitrile, acrylic and methacrylic acids and their salts and esters, vinyl acetate, vinyl alcohol and vinyl pyrollidone. The polymer may be applied to the hygroscopic material in solid form or in aqueous emulsion or solution, or solution in an organic solvent. Alternatively the vinyl polymer may be formed in situ on the hygroscopic material by applying thereto the vinyl monomer which is then polymerized.
GB20556/53A 1952-07-24 1953-07-24 Processes for treating hygroscopic material Expired GB750809A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE750809X 1952-07-24

Publications (1)

Publication Number Publication Date
GB750809A true GB750809A (en) 1956-06-20

Family

ID=6650872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20556/53A Expired GB750809A (en) 1952-07-24 1953-07-24 Processes for treating hygroscopic material

Country Status (1)

Country Link
GB (1) GB750809A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131708B (en) * 1959-01-17 1962-06-20 Asahi Chemical Ind Process for the production of multi-nutrient fertilizers
DE1143214B (en) * 1960-05-05 1963-02-07 Gewerk Victor Chem Werke Process for reducing the rate of dissolution of the nutrient content of fertilizers
DE1164435B (en) * 1960-02-15 1964-03-05 Shell Int Research Mineral fertilizers
US3272772A (en) * 1961-08-30 1966-09-13 Dow Chemical Co Filled polymer compositions
DE1257801B (en) * 1962-08-08 1968-01-04 Wintershall Ag Process for reducing the rate of dissolution and preventing rapid leaching as well as the fixing in the soil of fertilizer granulates with water-soluble plant nutrients
DE1270579B (en) * 1962-11-24 1968-06-20 Basf Ag Process for making slow-acting fertilizers
US4722865A (en) * 1984-04-27 1988-02-02 Nederlandse Centrale Organisatie Voor Toegepast-Natuurwetenschappelijkond erzoek Poly(meth)acrylic network coated biologically or chemically active substrate and method of making same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131708B (en) * 1959-01-17 1962-06-20 Asahi Chemical Ind Process for the production of multi-nutrient fertilizers
DE1164435B (en) * 1960-02-15 1964-03-05 Shell Int Research Mineral fertilizers
DE1143214B (en) * 1960-05-05 1963-02-07 Gewerk Victor Chem Werke Process for reducing the rate of dissolution of the nutrient content of fertilizers
US3272772A (en) * 1961-08-30 1966-09-13 Dow Chemical Co Filled polymer compositions
DE1257801B (en) * 1962-08-08 1968-01-04 Wintershall Ag Process for reducing the rate of dissolution and preventing rapid leaching as well as the fixing in the soil of fertilizer granulates with water-soluble plant nutrients
DE1270579B (en) * 1962-11-24 1968-06-20 Basf Ag Process for making slow-acting fertilizers
US4722865A (en) * 1984-04-27 1988-02-02 Nederlandse Centrale Organisatie Voor Toegepast-Natuurwetenschappelijkond erzoek Poly(meth)acrylic network coated biologically or chemically active substrate and method of making same

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