GB1269018A - A method of and apparatus for encapsulating pulverulent materials - Google Patents

A method of and apparatus for encapsulating pulverulent materials

Info

Publication number
GB1269018A
GB1269018A GB00990/70A GB1099070A GB1269018A GB 1269018 A GB1269018 A GB 1269018A GB 00990/70 A GB00990/70 A GB 00990/70A GB 1099070 A GB1099070 A GB 1099070A GB 1269018 A GB1269018 A GB 1269018A
Authority
GB
United Kingdom
Prior art keywords
pulverent
chamber
coating
high frequency
gaseous
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
GB00990/70A
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.)
Progil SARL
Original Assignee
Progil SARL
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 Progil SARL filed Critical Progil SARL
Publication of GB1269018A publication Critical patent/GB1269018A/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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • 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
    • A01N25/26—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 in coated particulate form
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
    • A23P10/00—Shaping or working of foodstuffs characterised by the products
    • A23P10/30—Encapsulation of particles, e.g. foodstuff additives
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/28—Moving reactors, e.g. rotary drums
    • 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
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/005—Stabilisation of the solid compounds subsequent to the preparation or to the crystallisation, by additives or by coating
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/10—Halides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/46—Polymerisation initiated by wave energy or particle radiation
    • C08F2/52—Polymerisation initiated by wave energy or particle radiation by electric discharge, e.g. voltolisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • C09B67/0004—Coated particulate pigments or dyes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • C09B67/0004—Coated particulate pigments or dyes
    • C09B67/0008—Coated particulate pigments or dyes with organic coatings
    • C09B67/0013—Coated particulate pigments or dyes with organic coatings with polymeric coatings
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00081—Tubes
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/187—Details relating to the spatial orientation of the reactor inclined at an angle to the horizontal or to the vertical plane

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Toxicology (AREA)
  • Wood Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Plant Pathology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Dentistry (AREA)
  • Materials Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Glanulating (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Physical Vapour Deposition (AREA)
  • Polymerisation Methods In General (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

1,269,018. Coating apparatus; coating particles. PROGIL. 6 March, 1970 [10 March, 1969], No. 10990/70. Headings B2E and B2L. [Also in Division C1] Pulverent materials such as metals, metallic oxides, chemical compounds, cements, thermoplastic or thermosetting polymer powders, pesticides or detergents are encapsulated in a continuous coating of at least one macromolecular substance by subjecting the pulverent material to a high frequency electrical discharge in a chamber under reduced pressure and in the presence of at least one polymerisable organic compound. The polymerisable organic compound may be styrene, ethyl acrylate or triallyl phosphate. In examples given styrene or ethyl acrylate are introduced into the coating chamber in gaseous form with the pulverent material and both may be introduced at separate times to produce two coatings. Alternatively triallyl phosphate may be mixed with the pulverent material to produce a paste which is then treated by the high frequency discharge under conditions of reduced pressure. Apparatus (shown in Fig. 1) comprises a rotatable drum 1 having a high frequency discharge electrode 7. Pulverent material is fed through an opening 9 and a gaseous monomer through an opening 8. A screw conveyor 10 feeds the material into the chamber. A vacuum is provided through outlet 11 and the coated material passes out of the chamber through a chute 5 and screw conveyor 13 to outlet 12. In a second embodiment, Fig. 2, pulverent material passes through an inlet 102, through holes 104 in a screen 103 and down glass tubes 105 in a glass container 108 having an electrode 110. Gaseous polymerisable material can be introduced through inlets 111, 112 and a combined inlet and vacuum source 109 is provided. Cooling water enters through a pipe 106 and exits through a pipe 107.
GB00990/70A 1969-03-10 1970-03-06 A method of and apparatus for encapsulating pulverulent materials Expired GB1269018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6907060A FR2036402A5 (en) 1969-03-10 1969-03-10

Publications (1)

Publication Number Publication Date
GB1269018A true GB1269018A (en) 1972-03-29

Family

ID=9030564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB00990/70A Expired GB1269018A (en) 1969-03-10 1970-03-06 A method of and apparatus for encapsulating pulverulent materials

Country Status (7)

Country Link
JP (1) JPS498022B1 (en)
BE (1) BE747096A (en)
CH (1) CH520760A (en)
DE (1) DE2011306C3 (en)
FR (1) FR2036402A5 (en)
GB (1) GB1269018A (en)
NL (1) NL7003389A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2000006685A1 (en) * 1998-07-29 2000-02-10 The Procter & Gamble Company Particulate compositions having a plasma-induced, water-soluble coating and process for making same
WO2000006686A1 (en) * 1998-07-29 2000-02-10 The Procter & Gamble Company Detergent composition having a plasma-induced, water-soluble coating and process for making same
WO2000006687A1 (en) * 1998-07-29 2000-02-10 The Procter & Gamble Company Particulate compositions having a plasma-induced, graft polymerized, water-soluble coating and process for making same
GB2343389A (en) * 1998-10-23 2000-05-10 John James Todd Method and apparatus for coating granules
WO2003064557A1 (en) * 2002-01-31 2003-08-07 Forschungszentrum Karlsruhe Gmbh Fluorescent nanoparticles and the production thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697279A (en) * 1971-02-17 1972-10-10 Polaroid Corp Polymer encapsulated silver halide grains and photographic materials employing same
US5176938A (en) * 1988-11-23 1993-01-05 Plasmacarb Inc. Process for surface treatment of pulverulent material
DE4005328A1 (en) * 1990-02-20 1991-08-22 Technics Plasma Gmbh METHOD FOR CONDITIONING A POWDER AND DEVICE THEREFOR
DE4423471A1 (en) * 1994-07-05 1996-01-11 Buck Chem Tech Werke Device for the plasma treatment of fine-grained goods
DE19638601C1 (en) * 1996-09-20 1998-02-26 Karlsruhe Forschzent Production of particles with metal compound core and polymeric shell

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2000006685A1 (en) * 1998-07-29 2000-02-10 The Procter & Gamble Company Particulate compositions having a plasma-induced, water-soluble coating and process for making same
WO2000006686A1 (en) * 1998-07-29 2000-02-10 The Procter & Gamble Company Detergent composition having a plasma-induced, water-soluble coating and process for making same
WO2000006687A1 (en) * 1998-07-29 2000-02-10 The Procter & Gamble Company Particulate compositions having a plasma-induced, graft polymerized, water-soluble coating and process for making same
US6440918B1 (en) 1998-07-29 2002-08-27 The Procter & Gamble Company Particulate compositions having a plasma-induced, graft polymerized, water-soluble coating and process for making same
US6462012B1 (en) 1998-07-29 2002-10-08 The Procter & Gamble Company Detergent composition having a plasma-induced, water soluble coating and process for making same
US6677290B2 (en) 1998-07-29 2004-01-13 Procter & Gamble Company Particulate compositions having a plasma-induced, graft polymerized, water-soluble coating and process for making same
US6716806B2 (en) 1998-07-29 2004-04-06 The Procter & Gamble Company Detergent composition having a plasma-induced, water-soluble coating and process for making same
GB2343389A (en) * 1998-10-23 2000-05-10 John James Todd Method and apparatus for coating granules
WO2003064557A1 (en) * 2002-01-31 2003-08-07 Forschungszentrum Karlsruhe Gmbh Fluorescent nanoparticles and the production thereof

Also Published As

Publication number Publication date
DE2011306B2 (en) 1973-09-13
DE2011306A1 (en) 1970-09-17
CH520760A (en) 1972-03-31
BE747096A (en) 1970-09-09
FR2036402A5 (en) 1970-12-24
JPS498022B1 (en) 1974-02-23
DE2011306C3 (en) 1974-04-25
NL7003389A (en) 1970-09-14

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