EP0687245B1 - Process for producing stabilised sodium percarbonate - Google Patents

Process for producing stabilised sodium percarbonate

Info

Publication number
EP0687245B1
EP0687245B1 EP94907569A EP94907569A EP0687245B1 EP 0687245 B1 EP0687245 B1 EP 0687245B1 EP 94907569 A EP94907569 A EP 94907569A EP 94907569 A EP94907569 A EP 94907569A EP 0687245 B1 EP0687245 B1 EP 0687245B1
Authority
EP
European Patent Office
Prior art keywords
pct
sodium percarbonate
perborate
date sep
sodium
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 - Lifetime
Application number
EP94907569A
Other languages
German (de)
French (fr)
Other versions
EP0687245A1 (en
Inventor
Claas-Jürgen Klasen
Birgit Bertsch-Frank
Thomas Lieser
Peter Schubert
Klaus Müller
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.)
Evonik Operations GmbH
Original Assignee
Degussa 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 Degussa GmbH filed Critical Degussa GmbH
Publication of EP0687245A1 publication Critical patent/EP0687245A1/en
Application granted granted Critical
Publication of EP0687245B1 publication Critical patent/EP0687245B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/10—Peroxyhydrates; Peroxyacids or salts thereof containing carbon
    • C01B15/106—Stabilisation of the solid compounds, subsequent to the preparation or to the crystallisation, by additives or by coating
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/10—Peroxyhydrates; Peroxyacids or salts thereof containing carbon
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3937—Stabilising agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3942—Inorganic per-compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fuel Cell (AREA)
  • Cell Separators (AREA)

Abstract

PCT No. PCT/EP94/00422 Sec. 371 Date Sep. 28, 1995 Sec. 102(e) Date Sep. 28, 1995 PCT Filed Feb. 15, 1994 PCT Pub. No. WO94/20413 PCT Pub. Date Sep. 15, 1994The invention relates to a method for increasing the storage stability of sodium percarbonate (2 Na2CO3.3 H2O2) by coating with a sodium perborate. According to the present invention wet sodium percarbonate salt, obtained by reacting sodium carbonate with hydrogen peroxide in aqueous phase and separating the salt from the aqueous phase, is treated with a solution or suspension containing sodium perborate in a solid-liquid separator by a kind of displacement wash. In contrast to previously known methods, according to the present invention a greater storage stability is attained with smaller quantities of perborate coating.
EP94907569A 1993-03-02 1994-02-15 Process for producing stabilised sodium percarbonate Expired - Lifetime EP0687245B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4306399A DE4306399C2 (en) 1993-03-02 1993-03-02 Process for the preparation of stabilized sodium percarbonate
DE4306399 1993-03-02
PCT/EP1994/000422 WO1994020413A1 (en) 1993-03-02 1994-02-15 Process for producing stabilised sodium percarbonate

Publications (2)

Publication Number Publication Date
EP0687245A1 EP0687245A1 (en) 1995-12-20
EP0687245B1 true EP0687245B1 (en) 1998-04-08

Family

ID=6481690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94907569A Expired - Lifetime EP0687245B1 (en) 1993-03-02 1994-02-15 Process for producing stabilised sodium percarbonate

Country Status (11)

Country Link
US (1) US5632965A (en)
EP (1) EP0687245B1 (en)
JP (1) JPH08507491A (en)
KR (1) KR960700957A (en)
AT (1) ATE164817T1 (en)
AU (1) AU6109794A (en)
DE (2) DE4306399C2 (en)
FI (1) FI954109A0 (en)
SI (1) SI9400104A (en)
TR (1) TR27376A (en)
WO (1) WO1994020413A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717729A1 (en) * 1997-04-26 1998-10-29 Degussa Coated sodium percarbonate particles, process for their preparation and their use
KR100366556B1 (en) 2000-04-26 2003-01-09 동양화학공업주식회사 Granular coated sodium percarbonate and process for preparing them
EP1939275A1 (en) * 2006-12-29 2008-07-02 Solvay SA Non-oxidiser percarbonate particles
ITUA20161748A1 (en) 2016-03-17 2017-09-17 I M A Industria Macch Automatiche S P A In Sigla Ima S P A GROUP FOR THE REGULARIZATION AND LAMINATION OF A GASEOUS FLOW

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE548432C (en) * 1928-10-17 1932-04-12 Degussa Production of a perborate
FR2226460B1 (en) * 1973-04-20 1976-12-17 Interox
JPS5315717B2 (en) * 1973-12-20 1978-05-26
DE2652776A1 (en) * 1975-05-13 1978-05-24 Interox Chemicals Ltd Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor
LU72575A1 (en) * 1975-05-23 1977-02-10
DE2651442C3 (en) * 1976-11-11 1979-11-15 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Sodium Percarbonate Particles
DE2810379C3 (en) * 1978-03-10 1980-12-11 Degussa Ag, 6000 Frankfurt Process for the production of stabilized sodium percarbonate
DE2712139C3 (en) * 1977-03-19 1982-05-19 Degussa Ag, 6000 Frankfurt Sodium percarbonate layer particles
LU76548A1 (en) * 1977-01-10 1978-09-18
DE2800760C2 (en) * 1978-01-09 1983-01-27 Degussa Ag, 6000 Frankfurt Process for the production of sodium percarbonate from a soda solution or suspension
GB1575792A (en) * 1978-01-10 1980-10-01 Interox Peroxygen compounds
DE3321082C2 (en) * 1982-06-10 1996-08-22 Kao Corp Bleach Cleaner
CA1202854A (en) * 1982-06-10 1986-04-08 Muthumi Kuroda Bleaching detergent composition
JPS60118606A (en) * 1983-11-28 1985-06-26 Mitsubishi Gas Chem Co Inc Stabilized sodium percarbonate granule
DE3720277A1 (en) * 1987-06-19 1988-12-29 Degussa METHOD FOR REDUCING THE TENSION TO BAKING UP PARTICULATE ACTIVE OXYGEN COMPOUNDS
AU7677291A (en) * 1990-04-06 1991-10-30 Fmc Corporation Peroxygen laundry bleach
JP2636496B2 (en) * 1990-11-21 1997-07-30 花王 株式会社 Stable sodium percarbonate particles and method for producing the same

Also Published As

Publication number Publication date
KR960700957A (en) 1996-02-24
WO1994020413A1 (en) 1994-09-15
FI954109A (en) 1995-09-01
US5632965A (en) 1997-05-27
EP0687245A1 (en) 1995-12-20
SI9400104A (en) 1994-09-30
DE4306399A1 (en) 1994-09-08
DE59405647D1 (en) 1998-05-14
JPH08507491A (en) 1996-08-13
AU6109794A (en) 1994-09-26
TR27376A (en) 1995-02-01
ATE164817T1 (en) 1998-04-15
DE4306399C2 (en) 1995-06-14
FI954109A0 (en) 1995-09-01

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