Classifications

• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
  • A01N57/34—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-halogen bonds; Phosphonium salts
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
  • A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
  • A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
  • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
  • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/02—Compounds of alkaline earth metals or magnesium
  • C09C1/021—Calcium carbonates
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/40—Compounds of aluminium
  • C09C1/42—Clays
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
  • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2006/00—Physical properties of inorganic compounds
  • C01P2006/80—Compositional purity

Definitions

• This invention relates to a composition for treating inorganic slurries and to a method of treating inorganic slurries with the aforesaid composition so as to maintain the slurries in a substantially homogeneous phase.
• inorganic slurries contain about 70% to 80% by weight of solids.
• Many inorganic slurries are known to be susceptible to bacterial contamination and it has been the practice to add one or more biocidally-active materials to the slurries in order to minimise such contamination.
• Phosphorus-containing compounds in particular tetrakis(hydroxyorgano)phosphonium salts (THP + salts) are known to be effective biocides.
• THP + salts tetrakis(hydroxyorgano)phosphonium salts
• Experimental work carried out by the applicants has shown, for example, that the addition of a solution of tetrakis(hydroxymethyl)phosphonium sulphate (THPS) to a calcium carbonate-based slurry can give rise to a reduction in bacterial count of 10 4 in 2 hours.
• THPS tetrakis(hydroxymethyl)phosphonium sulphate
• composition comprising a THP + salt and a dispersant will provide continuing preservation against bacterial contamination, while at the same time maintaining the slurry in a substantially homogeneous phase.
• the present invention provides a composition for treating an inorganic slurry, the composition comprising:
• the THP + salt is preferably tetrakis(hydroxymethyl)phosphonium sulphate.
• the THP + salt may be tetrakis(hydroxymethyl)phosphonium chloride, phosphate, nitrate or oxalate.
• a preferred example of a dispersant of the type (b)(i) is a compound having one tertiary nitrogen atom, such as a sodium salt of nitrilo-tris(methylene phosphate), particularly the tetra-sodium salt.
• Preferred examples of dispersants of the type (b) (ii) include those oligomers having the general H(CH 2 OM.CH 2 OM).PO 3 M 3 , wherein M is a cationic species such that the oligomer is soluble in water and n is a number greater than 1.
• a preferred example of a dispersant of the type (b)(iii) is a homopolymer of acrylic acid, especially a homopolymer having a molecular weight in the range 2000 to 5000.
• Preferred examples of dispersants of the type b(iv) include sodium tripolyphosphate.
• the present invention provides a method of treating an inorganic slurry to maintain the slurry in a substantially homogeneous phase, the method comprising the addition to the slurry of an effective amount of a composition according to the first aspect of the present invention.
• the inorganic slurry may, for example, comprise a calcium carbonate-based slurry.
• the inorganic slurry may comprise a pigment slurry, a clay slurry or a cement slurry.
• the ratio of THP + salt to dispersant in the composition is about 2:1 (as active ingredients).
• the composition may be added to the slurry in an amount in the range 10 ppm to 1000 ppm (by weight of the slurry), for example about 750 ppm (by weight of the slurry).

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• General Health & Medical Sciences (AREA)
• Health & Medical Sciences (AREA)
• Environmental Sciences (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Dentistry (AREA)
• Zoology (AREA)
• Agronomy & Crop Science (AREA)
• Wood Science & Technology (AREA)
• Dispersion Chemistry (AREA)
• Ceramic Engineering (AREA)
• Structural Engineering (AREA)
• Materials Engineering (AREA)
• Toxicology (AREA)
• Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
• Paper (AREA)
• Pigments, Carbon Blacks, Or Wood Stains (AREA)
• Liquid Crystal Substances (AREA)
• Threshing Machine Elements (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Treatment Of Sludge (AREA)

Priority Applications (4)

Applications Claiming Priority (3)

Related Parent Applications (1)

Related Child Applications (1)

Publications (1)

Family

ID=9951976

Family Applications (5)

Family Applications After (4)

Country Status (14)

Cited By (1)

Families Citing this family (4)

Citations (12)

Family Cites Families (5)

• 2003
  • 2003-01-29 GB GB0301975A patent/GB0301975D0/en not_active Ceased
• 2004
  • 2004-01-12 EP EP20040701396 patent/EP1592303B1/fr not_active Expired - Lifetime
  • 2004-01-12 AT AT04701396T patent/ATE430476T1/de active
  • 2004-01-12 CN CN2004800031771A patent/CN1744820B/zh not_active Expired - Fee Related
  • 2004-01-12 US US10/542,432 patent/US20060102563A1/en not_active Abandoned
  • 2004-01-12 DK DK04701396T patent/DK1592303T3/da active
  • 2004-01-12 ES ES04701396T patent/ES2324711T3/es not_active Expired - Lifetime
  • 2004-01-12 KR KR1020057013366A patent/KR101076579B1/ko not_active IP Right Cessation
  • 2004-01-12 DE DE200460020971 patent/DE602004020971D1/de not_active Expired - Lifetime
  • 2004-01-12 JP JP2006502183A patent/JP4568269B2/ja not_active Expired - Fee Related
  • 2004-01-12 WO PCT/GB2004/000056 patent/WO2004066731A1/fr active Search and Examination
  • 2004-01-12 CN CN201010179516.9A patent/CN101851439B/zh not_active Expired - Fee Related
  • 2004-01-12 CA CA 2514400 patent/CA2514400C/fr not_active Expired - Fee Related
  • 2004-01-16 TW TW93101227A patent/TWI334855B/zh not_active IP Right Cessation
• 2005
  • 2005-07-12 ZA ZA200505601A patent/ZA200505601B/en unknown
• 2012
  • 2012-08-15 US US13/586,012 patent/US20120309718A1/en not_active Abandoned
• 2013
  • 2013-04-03 US US13/856,058 patent/US8772356B2/en not_active Expired - Fee Related
• 2014
  • 2014-05-23 US US14/285,973 patent/US20140256686A1/en not_active Abandoned
• 2017
  • 2017-01-23 US US15/412,800 patent/US20170127681A1/en not_active Abandoned

Patent Citations (13)

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