WO2006130029A3 - Silica gels with moisture indicator, a method of obtaining them, and use of phthalein dyes - Google Patents

Silica gels with moisture indicator, a method of obtaining them, and use of phthalein dyes Download PDF

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Publication number
WO2006130029A3
WO2006130029A3 PCT/PL2006/000039 PL2006000039W WO2006130029A3 WO 2006130029 A3 WO2006130029 A3 WO 2006130029A3 PL 2006000039 W PL2006000039 W PL 2006000039W WO 2006130029 A3 WO2006130029 A3 WO 2006130029A3
Authority
WO
WIPO (PCT)
Prior art keywords
silica gels
obtaining
phthalein dyes
moisture indicator
indicators
Prior art date
Application number
PCT/PL2006/000039
Other languages
French (fr)
Other versions
WO2006130029A2 (en
Inventor
Waclaw Lanowy
Krystian Lukaszczyk
Przemyslaw Kasprzycki
Original Assignee
Poch S A
Waclaw Lanowy
Krystian Lukaszczyk
Przemyslaw Kasprzycki
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 Poch S A, Waclaw Lanowy, Krystian Lukaszczyk, Przemyslaw Kasprzycki filed Critical Poch S A
Publication of WO2006130029A2 publication Critical patent/WO2006130029A2/en
Publication of WO2006130029A3 publication Critical patent/WO2006130029A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates

Abstract

The invention concerns the application of phthalein dyes as indicators for colouring silica gels. The achieved silica gels with moisture indicators are excellent drying agents which are not harmful to humans and do not burden the natural environment. They possess very clear and distinct colour transitions of the hydrated and unhydrated forms and have greater sensitivity of colour change in the course of the gel's hydration.
PCT/PL2006/000039 2005-06-03 2006-06-01 Silica gels with moisture indicator, a method of obtaining them, and use of phthalein dyes WO2006130029A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP375514 2005-06-03
PL375514A PL375514A1 (en) 2005-06-03 2005-06-03 Silica gels with moisture indicator, a method of obtaining them, and use of phthalein dyes

Publications (2)

Publication Number Publication Date
WO2006130029A2 WO2006130029A2 (en) 2006-12-07
WO2006130029A3 true WO2006130029A3 (en) 2007-12-27

Family

ID=37207264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2006/000039 WO2006130029A2 (en) 2005-06-03 2006-06-01 Silica gels with moisture indicator, a method of obtaining them, and use of phthalein dyes

Country Status (2)

Country Link
PL (1) PL375514A1 (en)
WO (1) WO2006130029A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2277799B8 (en) 2009-07-23 2012-04-11 Airsec S.A.S. Hydrated humidity control substance and process for its preparation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766312A (en) * 1993-10-14 1998-06-16 Engelhard Process Chemicals Gmbh Adsorbents composed of inorganic oxides modified with organic dyes
EP1293773A2 (en) * 2001-09-15 2003-03-19 Macherey, Nagel GmbH & Co. Handelsgesellschaft Moisture indicator
DE10157551A1 (en) * 2001-11-23 2003-06-12 Messer Griesheim Gmbh Color indicator composition for moisture, used with gas purification system for purifying bottled gas for operating equipment or calibration in analytical laboratory, contains metal hydroxide and pH-indicator dye

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766312A (en) * 1993-10-14 1998-06-16 Engelhard Process Chemicals Gmbh Adsorbents composed of inorganic oxides modified with organic dyes
EP1293773A2 (en) * 2001-09-15 2003-03-19 Macherey, Nagel GmbH & Co. Handelsgesellschaft Moisture indicator
DE10157551A1 (en) * 2001-11-23 2003-06-12 Messer Griesheim Gmbh Color indicator composition for moisture, used with gas purification system for purifying bottled gas for operating equipment or calibration in analytical laboratory, contains metal hydroxide and pH-indicator dye

Also Published As

Publication number Publication date
WO2006130029A2 (en) 2006-12-07
PL375514A1 (en) 2006-12-11

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