FR2371379A1 - Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor - Google Patents

Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor

Info

Publication number
FR2371379A1
FR2371379A1 FR7635311A FR7635311A FR2371379A1 FR 2371379 A1 FR2371379 A1 FR 2371379A1 FR 7635311 A FR7635311 A FR 7635311A FR 7635311 A FR7635311 A FR 7635311A FR 2371379 A1 FR2371379 A1 FR 2371379A1
Authority
FR
France
Prior art keywords
silicate
precipitating
sodium percarbonate
mfr
increasing
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.)
Granted
Application number
FR7635311A
Other languages
French (fr)
Other versions
FR2371379B1 (en
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.)
Solvay Interox Ltd
Original Assignee
Interox Chemicals Ltd
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
Priority to DE19762652776 priority Critical patent/DE2652776A1/en
Priority claimed from DE19762652776 external-priority patent/DE2652776A1/en
Application filed by Interox Chemicals Ltd filed Critical Interox Chemicals Ltd
Priority to FR7635311A priority patent/FR2371379A1/en
Priority to BE1007823A priority patent/BE849370Q/en
Publication of FR2371379A1 publication Critical patent/FR2371379A1/en
Application granted granted Critical
Publication of FR2371379B1 publication Critical patent/FR2371379B1/fr
Granted 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
    • C01B15/103—Peroxyhydrates; Peroxyacids or salts thereof containing carbon containing only alkali metals as metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Stabilised sodium percarbonate mfr - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor. Prepn. of sodium percarbonate (I) comprises precipitating (I) from a soln. (pref. of sodium carbonate and hydrogen peroxide) contg. silicate, to obtain particles with a limited quantity (pref. 0.1-2.0 wt %) of silicate distributed in and through them. Sufficient silicate is then deposited on the surface of the particles to improve their resistance to external contaminants. (I) is stabilised against both its intrinsic instability (e.g due to Fe present in reactants) and instability due to external causes. Loss of active oxygen content, agglomeration and corrosion are prevented. (I) can be stored in bulk, safely for several months or even weeks, e.g. prior to in corporation into detergent compsns. Only small amts. of stabiliser, and no special appts. are required.
FR7635311A 1975-05-13 1976-11-22 Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor Granted FR2371379A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19762652776 DE2652776A1 (en) 1975-05-13 1976-11-19 Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor
FR7635311A FR2371379A1 (en) 1976-11-19 1976-11-22 Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor
BE1007823A BE849370Q (en) 1975-05-13 1976-12-14 PROCESS FOR MANUFACTURING SODIUM PERCARBONATE AND PRODUCT OBTAINED BY THIS PROCESS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19762652776 DE2652776A1 (en) 1975-05-13 1976-11-19 Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor
FR7635311A FR2371379A1 (en) 1976-11-19 1976-11-22 Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor

Publications (2)

Publication Number Publication Date
FR2371379A1 true FR2371379A1 (en) 1978-06-16
FR2371379B1 FR2371379B1 (en) 1980-08-01

Family

ID=25771165

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7635311A Granted FR2371379A1 (en) 1975-05-13 1976-11-22 Stabilised sodium percarbonate mfr. - by precipitating in presence of silicate, then increasing the silicate content of the mother liquor

Country Status (1)

Country Link
FR (1) FR2371379A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459625A1 (en) * 1990-05-25 1991-12-04 Mitsubishi Gas Chemical Company, Inc. Process for producing stabilized sodium percarbonate
EP0962424A1 (en) * 1998-06-05 1999-12-08 SOLVAY (Société Anonyme) Coated sodium percarbonate particles, process for their preparation, their use in detergent compositions and detergent compositions containing them

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB549841A (en) * 1941-09-12 1942-12-09 Laporte Ltd B Manufacture of sodium percarbonate
GB1195641A (en) * 1968-05-03 1970-06-17 Gni I Pi Osnovnoi Khim A Method of Producing Sodium Percarbonate
FR2264854A1 (en) * 1974-03-23 1975-10-17 Kao Corp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB549841A (en) * 1941-09-12 1942-12-09 Laporte Ltd B Manufacture of sodium percarbonate
GB1195641A (en) * 1968-05-03 1970-06-17 Gni I Pi Osnovnoi Khim A Method of Producing Sodium Percarbonate
FR2264854A1 (en) * 1974-03-23 1975-10-17 Kao Corp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459625A1 (en) * 1990-05-25 1991-12-04 Mitsubishi Gas Chemical Company, Inc. Process for producing stabilized sodium percarbonate
EP0962424A1 (en) * 1998-06-05 1999-12-08 SOLVAY (Société Anonyme) Coated sodium percarbonate particles, process for their preparation, their use in detergent compositions and detergent compositions containing them
WO1999064350A1 (en) * 1998-06-05 1999-12-16 Solvay (Société Anonyme) Coated sodium percarbonate particles, process for their preparation, their use in detergent compositions and detergent compositions containing them

Also Published As

Publication number Publication date
FR2371379B1 (en) 1980-08-01

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