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GB1501681A - Non-vitreous ceramic metal oxide microcapsules - Google Patents

Non-vitreous ceramic metal oxide microcapsules

Info

Publication number
GB1501681A
GB1501681A GB453/75A GB45375A GB1501681A GB 1501681 A GB1501681 A GB 1501681A GB 453/75 A GB453/75 A GB 453/75A GB 45375 A GB45375 A GB 45375A GB 1501681 A GB1501681 A GB 1501681A
Authority
GB
United Kingdom
Prior art keywords
microcapsules
metal oxide
ceramic
liquid
converted
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
GB453/75A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1501681A publication Critical patent/GB1501681A/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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
    • 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
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
    • 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
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/20—After-treatment of capsule walls, e.g. hardening
    • B01J13/203—Exchange of core-forming material by diffusion through the capsule wall
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/51—Spheres
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/51—Spheres
    • B01J35/52—Hollow spheres
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/30—Oxides other than silica
    • 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
    • C04B30/00—Compositions for artificial stone, not containing binders
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/16—Solid spheres
    • C08K7/18—Solid spheres inorganic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Civil Engineering (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Ceramic microparticles are described which contain at least 85% of microcapsules or exist entirely in the form of microcapsules, said microcapsules being spherical or representing elongated or oblate spheroids. The wall of the microcapsules is of uniform thickness and composed of a ceramic polycrystalline metal oxide or an amorphous metal oxide which can be converted into a ceramic polycrystalline metal oxide by heat treatment. The microcapsules are filled with gas, a liquid or a solid or they are evacuated. The microcapsules are obtained by treating a dispersion or a sol of a corresponding metal oxide with a liquid organic dehydration agent, the metal oxide-containing droplets being converted into corresponding liquid-filled microcapsules which are then dried in such a manner that as few as possible of the microcapsules are broken. The particles can be used to prepare compositions, by incorporating them in a matrix on the basis of a metal, plastic, elastomeric or ceramic material.
GB453/75A 1974-01-07 1975-01-06 Non-vitreous ceramic metal oxide microcapsules Expired GB1501681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43134374A 1974-01-07 1974-01-07

Publications (1)

Publication Number Publication Date
GB1501681A true GB1501681A (en) 1978-02-22

Family

ID=23711507

Family Applications (2)

Application Number Title Priority Date Filing Date
GB41385/77A Expired GB1501682A (en) 1974-01-07 1975-01-06 Non-vitreous ceramic metal oxide microcapsules
GB453/75A Expired GB1501681A (en) 1974-01-07 1975-01-06 Non-vitreous ceramic metal oxide microcapsules

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB41385/77A Expired GB1501682A (en) 1974-01-07 1975-01-06 Non-vitreous ceramic metal oxide microcapsules

Country Status (13)

Country Link
JP (1) JPS603856B2 (en)
BE (1) BE824119A (en)
BR (1) BR7500085A (en)
CA (1) CA1061366A (en)
CH (1) CH626269A5 (en)
DE (1) DE2500153A1 (en)
ES (1) ES433416A1 (en)
FR (1) FR2256779B1 (en)
GB (2) GB1501682A (en)
IT (1) IT1026234B (en)
NL (1) NL181335C (en)
SE (1) SE437771B (en)
ZA (1) ZA75104B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003403A1 (en) * 1978-01-31 1979-08-08 United Kingdom Atomic Energy Authority Thermally insulating, fire resistant material and its production
GB2151601A (en) * 1983-12-19 1985-07-24 Atomic Energy Authority Uk Improvements in or relating to materials
EP1093845A3 (en) * 1999-10-20 2001-05-30 Henkel Kommanditgesellschaft auf Aktien Microcapsules
WO2005105307A1 (en) * 2004-05-03 2005-11-10 Yara International Asa Furnace for heat of catalysts and method of operating the furnace

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290847A (en) 1975-11-10 1981-09-22 Minnesota Mining And Manufacturing Company Multishell microcapsules
US4399226A (en) 1978-09-28 1983-08-16 Minnesota Mining And Manufacturing Company Tagging with microcapsules containing perfluoroalkyl pentafluorosulfide
GB2189780A (en) * 1986-04-22 1987-11-04 Shell Int Research A process for the preparation of alumina spheres
JPS63113165U (en) * 1987-01-16 1988-07-21
DE3840196C1 (en) * 1988-11-29 1990-04-12 Bayer Ag, 5090 Leverkusen, De
DE10013406B4 (en) * 2000-03-17 2007-01-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for the production of moldings from a composite material and use of the moldings
CN107973522A (en) * 2017-12-16 2018-05-01 李炫颖 A kind of preparation method of resistance to compression hollow glass micropearl
JP6957776B1 (en) * 2020-05-01 2021-11-02 積水化学工業株式会社 Thermally expandable microcapsules
CN114965601B (en) * 2022-05-13 2025-04-29 飞思仪表（深圳）有限公司 A method for preparing a sensitive material and sensor for VOCs gas sensor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR91342E (en) * 1965-04-21 1968-05-24 Grace W R & Co Process for manufacturing cores for microspheres and microspheres obtained by this process
GB1231385A (en) * 1967-08-04 1971-05-12
US3709706A (en) * 1969-05-16 1973-01-09 Minnesota Mining & Mfg Refractory fibers and other articles of zirconia and silica mixtures
US3748274A (en) * 1969-08-29 1973-07-24 Atomic Energy Commission Method of making particles from an aqueous sol
NL7111738A (en) * 1971-08-26 1973-02-28
CA947192A (en) * 1971-09-14 1974-05-14 Thomas J. Miller Method of forming particulate material from salt solutions
US3855172A (en) * 1972-04-07 1974-12-17 Du Pont Uniform oxide microspheres and a process for their manufacture
JPS5426142B2 (en) * 1973-08-09 1979-09-01
JPS5121954A (en) * 1974-08-16 1976-02-21 Hitachi Ltd HEADORAIYAA

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003403A1 (en) * 1978-01-31 1979-08-08 United Kingdom Atomic Energy Authority Thermally insulating, fire resistant material and its production
GB2151601A (en) * 1983-12-19 1985-07-24 Atomic Energy Authority Uk Improvements in or relating to materials
EP1093845A3 (en) * 1999-10-20 2001-05-30 Henkel Kommanditgesellschaft auf Aktien Microcapsules
WO2005105307A1 (en) * 2004-05-03 2005-11-10 Yara International Asa Furnace for heat of catalysts and method of operating the furnace

Also Published As

Publication number Publication date
BE824119A (en) 1975-07-07
FR2256779B1 (en) 1978-10-13
AU7689574A (en) 1976-07-01
DE2500153A1 (en) 1975-07-31
SE7416307L (en) 1975-07-08
IT1026234B (en) 1978-09-20
NL181335C (en) 1987-08-03
DE2500153C2 (en) 1989-12-07
JPS603856B2 (en) 1985-01-31
ES433416A1 (en) 1976-11-16
NL181335B (en) 1987-03-02
GB1501682A (en) 1978-02-22
JPS50100107A (en) 1975-08-08
CH626269A5 (en) 1981-11-13
CA1061366A (en) 1979-08-28
ZA75104B (en) 1976-01-28
NL7416904A (en) 1975-07-09
BR7500085A (en) 1975-11-04
SE437771B (en) 1985-03-18
FR2256779A1 (en) 1975-08-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950105