FR2199481A2 - Preventing dusting formation - Google Patents

Preventing dusting formation

Info

Publication number
FR2199481A2
FR2199481A2 FR7237246A FR7237246A FR2199481A2 FR 2199481 A2 FR2199481 A2 FR 2199481A2 FR 7237246 A FR7237246 A FR 7237246A FR 7237246 A FR7237246 A FR 7237246A FR 2199481 A2 FR2199481 A2 FR 2199481A2
Authority
FR
France
Prior art keywords
ptfe
dust
formation
particle size
treatment liq
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.)
Granted
Application number
FR7237246A
Other languages
French (fr)
Other versions
FR2199481B2 (en
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.)
Kewanee Oil Co
Original Assignee
Kewanee Oil Co
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
Priority claimed from FR7214133A external-priority patent/FR2134000A1/en
Priority claimed from US00287578A external-priority patent/US3838064A/en
Application filed by Kewanee Oil Co filed Critical Kewanee Oil Co
Publication of FR2199481A2 publication Critical patent/FR2199481A2/en
Application granted granted Critical
Publication of FR2199481B2 publication Critical patent/FR2199481B2/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
    • 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
    • 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
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0092—Dyes in solid form
    • C09B67/0094—Treatment of powders, e.g. antidusting
    • 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
    • C09C3/10—Treatment with macromolecular organic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • 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
    • C01P2006/20—Powder free flowing behaviour
    • 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
    • C01P2006/90—Other properties not specified above

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Formation of dust in a solid particulate material which normally shows a high tendency to dust formation, has a particle size <100 mesh of a Tyler sieve specif. 1-44 mu and is different from PTFE, e.g. carbon black, flour, pigments, beryllium oxide and selenium oxide, is prevented by (a) mixing the material with 0.02-20, pref. 0.02-1wt.% PTFE which can be transformed into fibrils, and with a treatment liq. in amt. suff. to obtain a homogeneous mass which can be processed, (b) treating the mass at >20 degrees C, but below the decomposn. temp. of the material or the PTFE until it forms a random network of PTFE fibres, (c) eliminating the treatment liq., during or after stage (b), and (d) recovering the treated material, which does not form dust, practically cannot be distinguished from the original material, and has an unaltered prim, particle size.
FR7237246A 1972-04-21 1972-10-20 Preventing dusting formation Granted FR2199481A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7214133A FR2134000A1 (en) 1971-04-21 1972-04-21 Non-dusting pigments - by mixing with finely divided ptfe and liquid processing auxiliary
US00287578A US3838064A (en) 1971-04-21 1972-09-19 Process for dust control

Publications (2)

Publication Number Publication Date
FR2199481A2 true FR2199481A2 (en) 1974-04-12
FR2199481B2 FR2199481B2 (en) 1976-06-04

Family

ID=26217046

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7237246A Granted FR2199481A2 (en) 1972-04-21 1972-10-20 Preventing dusting formation

Country Status (1)

Country Link
FR (1) FR2199481A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026824A1 (en) * 1993-05-10 1994-11-24 Engelhard Corporation Abrasive pigments mixed with polytetrafluorethylene resin particles
EP0665274A2 (en) * 1994-01-26 1995-08-02 Central Glass Company, Limited Water-repellent composite grains, method for producing same, and water-repellent article using same
EP0843968A2 (en) * 1996-11-20 1998-05-27 Kramer &amp; Best Anlagenbau GmbH Plant for dust reduction of flour

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026824A1 (en) * 1993-05-10 1994-11-24 Engelhard Corporation Abrasive pigments mixed with polytetrafluorethylene resin particles
EP0665274A2 (en) * 1994-01-26 1995-08-02 Central Glass Company, Limited Water-repellent composite grains, method for producing same, and water-repellent article using same
EP0665274A3 (en) * 1994-01-26 1996-08-14 Central Glass Co Ltd Water-repellent composite grains, method for producing same, and water-repellent article using same.
EP0843968A2 (en) * 1996-11-20 1998-05-27 Kramer &amp; Best Anlagenbau GmbH Plant for dust reduction of flour
EP0843968A3 (en) * 1996-11-20 1999-09-15 Kramer &amp; Best Anlagenbau GmbH Plant for dust reduction of flour

Also Published As

Publication number Publication date
FR2199481B2 (en) 1976-06-04

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