IT1256501B - Procedimento per la preparazione di polvere di vetro molto fine di elevata purezza. - Google Patents

Procedimento per la preparazione di polvere di vetro molto fine di elevata purezza.

Info

Publication number
IT1256501B
IT1256501B ITTO920002A ITTO920002A IT1256501B IT 1256501 B IT1256501 B IT 1256501B IT TO920002 A ITTO920002 A IT TO920002A IT TO920002 A ITTO920002 A IT TO920002A IT 1256501 B IT1256501 B IT 1256501B
Authority
IT
Italy
Prior art keywords
glass powder
particle size
grinding
preparation
high purity
Prior art date
Application number
ITTO920002A
Other languages
English (en)
Original Assignee
Schott Glaswerke
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 Schott Glaswerke filed Critical Schott Glaswerke
Publication of ITTO920002A0 publication Critical patent/ITTO920002A0/it
Publication of ITTO920002A1 publication Critical patent/ITTO920002A1/it
Application granted granted Critical
Publication of IT1256501B publication Critical patent/IT1256501B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/20—Disintegrating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/10—Forming beads
    • C03B19/1005—Forming solid beads

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Dental Preparations (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)

Abstract

Viene descritto un procedimento per la preparazione di polvere di vetro molto fine ad elevata purezza, in cui polvere di vetro avente una dimensione massima delle particelle ? = 300 ?m viene macinata alla dimensione di particelle desiderata in un mulino con agitazione per mezzo di elementi di macinazione formati da vetro la cui abrasione non danneggia le proprietà della polvere di vetro risultante, in presenza di un liquido di macinazione comprendente acqua o miscele di almeno 50% in peso di acqua e almeno un composto organico contenente ossigeno solubile in acqua avente da 1 a 5 atomi di carbonio nella molecola, la sospensione di macinazione viene quindi congelata, ed il solvente viene successivamente rimosso dalla sospensione di macinazione mediante liofilizzazione. La polvere di vetro può essere preparata con dimensione media delle particelle d50 sino a 0,2 ?m ed è particolarmente adatta come carica per resine sintetiche nel settore dentario.
ITTO920002A 1991-01-11 1992-01-03 Procedimento per la preparazione di polvere di vetro molto fine di elevata purezza. IT1256501B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4100604A DE4100604C1 (it) 1991-01-11 1991-01-11

Publications (3)

Publication Number Publication Date
ITTO920002A0 ITTO920002A0 (it) 1992-01-03
ITTO920002A1 ITTO920002A1 (it) 1993-07-03
IT1256501B true IT1256501B (it) 1995-12-07

Family

ID=6422816

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO920002A IT1256501B (it) 1991-01-11 1992-01-03 Procedimento per la preparazione di polvere di vetro molto fine di elevata purezza.

Country Status (6)

Country Link
JP (1) JP2566498B2 (it)
AU (1) AU637279B2 (it)
DE (1) DE4100604C1 (it)
FR (1) FR2671493B1 (it)
GB (1) GB2251814B (it)
IT (1) IT1256501B (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1009236A3 (nl) * 1995-03-17 1997-01-07 B A Emiel Vanderstraeten B V Werkwijze voor het bereiden van glas en voor het conditioneren van de grondstoffen bestemd voor deze glasbereiding.
US6098906A (en) * 1998-12-04 2000-08-08 Kerr Corporation Vibratory mill and method of use for low contamination grinding
DE10111449A1 (de) 2001-03-09 2002-09-26 Schott Glas Verwendung von bioaktivem Glas in Zahnfüllmaterial
FI116657B (fi) * 2002-03-28 2006-01-31 Focus Inhalation Oy Menetelmä kantoainehiukkasten käsittelemiseksi ja niiden käyttö
DE10252693B4 (de) * 2002-11-13 2007-03-29 Trovotech Gmbh Verfahren zur Herstellung von plättchenförmigen sowie unregelmäßigen, 3-dimensional oder regelmäßig geformten Glaspartikeln
DE102004011218B4 (de) 2004-03-04 2006-01-19 Schott Ag Röntgenopakes Glas, Verfahren zu seiner Herstellung und seine Verwendung
DE102004022566B4 (de) 2004-05-07 2019-05-09 Schott Ag Mit funktionellen Gruppen homogen beschichtete Pulverteilchen, ein Verfahren zu deren Herstellung und ihre Verwendung
GB0515088D0 (en) * 2005-07-22 2005-08-31 Imerys Minerals Ltd Particulate glass compositions and methods of production
DE102009008953B4 (de) 2009-02-13 2010-12-30 Schott Ag Röntgenopakes bariumfreies Glas und dessen Verwendung
DE102009008954B4 (de) 2009-02-13 2010-12-23 Schott Ag Röntgenopakes bariumfreies Glas und dessen Verwendung
DE102009008951B4 (de) 2009-02-13 2011-01-20 Schott Ag Röntgenopakes bariumfreies Glas und dessen Verwendung
DE102010007796B3 (de) 2010-02-12 2011-04-14 Schott Ag Röntgenopakes bariumfreies Glas und dessen Verwendung
DE102012203875A1 (de) 2011-04-21 2012-10-25 Schott Ag Glaspulver mit verbesserter Korngrößenverteilung und Verfahren zu dessen Herstellung
DE102011084501B3 (de) * 2011-10-14 2013-03-21 Schott Ag Röntgenopakes bariumfreies Glas und dessen Verwendung
DE102012008175A1 (de) 2012-04-26 2013-10-31 Heraeus Quarzglas Gmbh & Co. Kg Verfahren zur Herstellung eines SiO2-Granulats
US10301212B2 (en) 2016-07-29 2019-05-28 Schott Ag Radiopaque glass and uses thereof
US11136260B2 (en) 2016-07-29 2021-10-05 Schott Ag Radiopaque glass and use thereof
DE102018102301B4 (de) 2018-02-01 2019-08-14 Schott Ag Röntgenopakes Glas und dessen Verwendung
DE102018010246B4 (de) 2018-02-01 2024-05-16 Schott Ag Röntgenopakes Glas und dessen Verwendung
WO2023074234A1 (ja) * 2021-10-28 2023-05-04 日本電気硝子株式会社 球状ガラス粒子の製造方法、バーナー、球状ガラス粒子及び歯科用組成物

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3533578A (en) * 1977-04-28 1979-10-25 Colortex Sa Micro-mill-mixer
US4131238A (en) * 1977-09-15 1978-12-26 Energy And Minerals Research Co. Ultrasonic grinder
US4297266A (en) * 1980-02-08 1981-10-27 Den-Mat, Inc. Microfilled dental composite and method using the same
US4403742A (en) * 1980-11-13 1983-09-13 The Dow Chemical Company Use of rod mill for initial stage of solder glass grinding
DE3580042D1 (de) * 1984-07-26 1990-11-08 Univ Queensland Zerkleinerung von kohlen, erzen und industriellen mineralien und felsen.

Also Published As

Publication number Publication date
JPH06144873A (ja) 1994-05-24
AU637279B2 (en) 1993-05-20
FR2671493A1 (fr) 1992-07-17
DE4100604C1 (it) 1992-02-27
ITTO920002A1 (it) 1993-07-03
JP2566498B2 (ja) 1996-12-25
FR2671493B1 (fr) 1995-04-07
AU1003592A (en) 1992-08-27
GB2251814B (en) 1994-01-05
GB2251814A (en) 1992-07-22
GB9200141D0 (en) 1992-02-26
ITTO920002A0 (it) 1992-01-03

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19981231