IE792408L - Silica gel - Google Patents

Silica gel

Info

Publication number
IE792408L
IE792408L IE792408A IE240879A IE792408L IE 792408 L IE792408 L IE 792408L IE 792408 A IE792408 A IE 792408A IE 240879 A IE240879 A IE 240879A IE 792408 L IE792408 L IE 792408L
Authority
IE
Ireland
Prior art keywords
silica gel
hydrogel
washing
surface area
less
Prior art date
Application number
IE792408A
Other versions
IE49319B1 (en
Original Assignee
Grace Gmbh
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 Grace Gmbh filed Critical Grace Gmbh
Publication of IE792408L publication Critical patent/IE792408L/en
Publication of IE49319B1 publication Critical patent/IE49319B1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25—Silicon; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C01B33/158—Purification; Drying; Dehydrating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/41—Particular ingredients further characterized by their size
    • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Silicon Compounds (AREA)
  • Cosmetics (AREA)

Abstract

A toothpaste may contain as an abrading and polishing agent a silica gel having an average particle size of 1 to 30 microns and a) a surface area of 1 to 600 m<2>/g, b) a pore volume of 0.05 to 0.5 cm<3>/g, c) a product of surface area (in m<2>/g) x pore volume (in cm<3>/g) less than or equal to 240, d) a calculated pore diameter of 1.5 to 2.5 nm, and e) a water content of less than 25% by weight which is produced by gelling an aqueous silicate solution to form a silica hydrogel, washing the silica hydrogel to a purity of about 90 to 99% by weight SiO2 (based on the calcination loss-free substance) at a pH value below 6 and at a temperature of about 0 to 70 DEG C and grinding and drying the washed hydrogel so as to prevent ageing, the washing and drying conditions to prevent ageing being set so that the silica gel product has the desired properties. a [GB2038303A]
IE2408/79A 1978-12-13 1979-12-12 Silica gel,process for preparing it and its use IE49319B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2853647A DE2853647C3 (en) 1978-12-13 1978-12-13 Process for the preparation of silica gels and their use

Publications (2)

Publication Number Publication Date
IE792408L true IE792408L (en) 1980-06-13
IE49319B1 IE49319B1 (en) 1985-09-18

Family

ID=6056941

Family Applications (1)

Application Number Title Priority Date Filing Date
IE2408/79A IE49319B1 (en) 1978-12-13 1979-12-12 Silica gel,process for preparing it and its use

Country Status (19)

Country Link
JP (1) JPS55104911A (en)
AT (1) ATA784279A (en)
AU (1) AU534199B2 (en)
BE (1) BE880583A (en)
BR (1) BR7908104A (en)
CH (1) CH650754A5 (en)
DE (1) DE2853647C3 (en)
DK (1) DK528979A (en)
ES (1) ES487399A1 (en)
FR (1) FR2444004A1 (en)
GB (1) GB2038303B (en)
IE (1) IE49319B1 (en)
IT (1) IT1126543B (en)
MY (1) MY8400226A (en)
NL (1) NL7908956A (en)
PH (1) PH16359A (en)
PT (1) PT70577A (en)
SE (1) SE439296B (en)
ZA (1) ZA796752B (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279879A (en) * 1979-10-01 1981-07-21 W. R. Grace & Co. Silica gel
DE3236180A1 (en) * 1982-09-30 1984-04-05 Akzo Gmbh, 5600 Wuppertal Silica loaded with surfactant, process for its production and use
US4569838A (en) * 1983-12-23 1986-02-11 Colgate-Palmolive Company Dentifrice
US4631184A (en) * 1984-01-10 1986-12-23 W. R. Grace & Co. Dialytic silica dentifrice
US4528181A (en) * 1984-02-01 1985-07-09 Colgate-Palmolive Company Dentifrice containing dual sources of fluoride
AU578392B2 (en) * 1984-07-31 1988-10-20 Lion Corporation Toothpaste composition containing silica
GB8419708D0 (en) * 1984-08-02 1984-09-05 Shell Int Research Preparation of silica spheres
DE3430801A1 (en) * 1984-08-22 1986-03-06 Bayer Ag, 5090 Leverkusen USE OF POROUS FILLERS IN POLYMERIZABLE MEASURES, SUCH MEASURES AND THE USE THEREOF FOR THE PRODUCTION OF MOLDED BODIES
US4575456A (en) * 1984-11-30 1986-03-11 Colgate-Palmolive Company Gel dentifrice of desirable consistency
US4659504A (en) * 1984-11-30 1987-04-21 Colgate-Palmolive Company Preparation of phytate-salt free gel dentifrice
US4562065A (en) * 1984-12-11 1985-12-31 Colgate-Palmolive Company Astringent dentifrice
NZ214031A (en) * 1984-12-11 1989-05-29 Colgate Palmolive Co Astringent dentifrice containing synthetic, precipitated, amorphous silica gel as polishing agent
US4562063A (en) * 1984-12-11 1985-12-31 Colgate-Palmolive Company Astringent gel dentifrice
US4562066A (en) * 1984-12-11 1985-12-31 Colgate-Palmolive Company Astringent dentifrice containing monofluorophosphate
GB8529796D0 (en) * 1985-12-03 1986-01-08 Unilever Plc Precipitated silicas
GB8604985D0 (en) * 1986-02-28 1986-04-09 Unilever Plc Precipitated silicas
PT85223B (en) * 1986-07-22 1990-03-30 Grace W R & Co PROCESS FOR THE PREPARATION OF AEROGELES DE SILICA AND DENTIFICAL COMPOSITIONS
JPS6371054U (en) * 1986-10-29 1988-05-12
JPS63100055U (en) * 1986-12-20 1988-06-29
GB8721644D0 (en) * 1987-09-15 1987-10-21 Unilever Plc Silicas
JPH0187763U (en) * 1987-12-02 1989-06-09
JPH0242010U (en) * 1988-06-24 1990-03-23
JPH02131457U (en) * 1989-04-10 1990-11-01
US5676932A (en) † 1995-05-02 1997-10-14 J.M. Huber Corporation Silica abrasive compositions
DE19615763C2 (en) * 1996-04-20 1999-10-28 Heraeus Kulzer Gmbh & Co Kg Silica-based filler, process for its preparation and its use
US5939051A (en) * 1998-02-27 1999-08-17 Colgate-Palmolive Company Dental abrasive
CN105686328A (en) 2009-07-31 2016-06-22 高露洁-棕榄公司 High cleaning dentifrice compositions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE292006C (en) *
GB263199A (en) * 1925-12-19 1928-03-20 Ig Farbenindustrie Ag An improved process for the production of active silica gels with fine capillary pores
US3243262A (en) * 1963-02-18 1966-03-29 Grace W R & Co Process for preparing microspheroidal silica
GB1077908A (en) * 1965-05-05 1967-08-02 Grace W R & Co Process for the production of silica gels
SE343477C (en) * 1966-12-05 1977-09-26 Unilever Nv TOOTH CREAM COMPOSITION CONTAINING A SILICO DIOXIDE
GB1264292A (en) * 1969-03-28 1972-02-16
AU514418B2 (en) * 1976-02-05 1981-02-12 W.R. Grace & Co. Dentifrice

Also Published As

Publication number Publication date
IT7927961A0 (en) 1979-12-07
IE49319B1 (en) 1985-09-18
BR7908104A (en) 1980-07-22
ATA784279A (en) 1985-09-15
FR2444004B1 (en) 1983-01-28
GB2038303A (en) 1980-07-23
SE7910212L (en) 1980-06-14
SE439296B (en) 1985-06-10
CH650754A5 (en) 1985-08-15
MY8400226A (en) 1984-12-31
DE2853647A1 (en) 1980-06-26
AU5372379A (en) 1980-07-10
JPS6242848B2 (en) 1987-09-10
PH16359A (en) 1983-09-08
DE2853647C3 (en) 1988-04-14
FR2444004A1 (en) 1980-07-11
ES487399A1 (en) 1980-09-16
GB2038303B (en) 1982-11-17
JPS55104911A (en) 1980-08-11
IT1126543B (en) 1986-05-21
BE880583A (en) 1980-04-01
DK528979A (en) 1980-06-14
NL7908956A (en) 1980-06-17
DE2853647B2 (en) 1980-11-06
ZA796752B (en) 1980-12-31
AU534199B2 (en) 1984-01-12
PT70577A (en) 1980-01-01

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Legal Events

Date Code Title Description
MM4A Patent lapsed