GB1449061A - Process for production of sodium perborate - Google Patents
Process for production of sodium perborateInfo
- Publication number
- GB1449061A GB1449061A GB4100873A GB4100873A GB1449061A GB 1449061 A GB1449061 A GB 1449061A GB 4100873 A GB4100873 A GB 4100873A GB 4100873 A GB4100873 A GB 4100873A GB 1449061 A GB1449061 A GB 1449061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- perborate
- crystallization
- per
- nuclei
- tetrahydrate
- 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
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
- C01B15/12—Peroxyhydrates; Peroxyacids or salts thereof containing boron
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Glass Compositions (AREA)
- Detergent Compositions (AREA)
- Peptides Or Proteins (AREA)
Abstract
1449061 Sodium perborate DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT 31 Aug 1973 [2 Sept 1972] 41008/73 Heading C1A Abrasion-resistant sodium perborate tetrahydrate is made in one or more crystallization stages by (1) introducing a supersaturated perborate tetrahydrate solution containing 200- 700 g. perborate tetrahydrate per litre into a suspension of perborate seeding nuclei in perborate solution containing 100-500 g. of nuclei per litre, the temperature of the mixture being 20-40‹ C., the introduction being at such a speed that not more than 30 g. perborate are crystallized per minute per m.<SP>2</SP> of apparent seeding area, and such that the crystallization ratio is not more than 25% per stage while the total crystallization ratio is not more than 100%; (2) cooling to 15‹ C. within 15-30 mins. of the end of crystallization and subsequently recovering at least a portion of the product. The crystallization ratio is defined as grams perborate added/grams perborate initially present x 100% and is a measure of the increase in size of the nuclei. A crystallization stage is completed by ending the supply of supersaturated solution or removing the suspension from the crystallization zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722243341 DE2243341C3 (en) | 1972-09-02 | 1972-09-02 | Process for the production of abrasion-resistant and coarsened sodium perborate tetrahydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1449061A true GB1449061A (en) | 1976-09-08 |
Family
ID=5855411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4100873A Expired GB1449061A (en) | 1972-09-02 | 1973-08-31 | Process for production of sodium perborate |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE799787A (en) |
| CH (1) | CH585669A5 (en) |
| DE (1) | DE2243341C3 (en) |
| FR (1) | FR2197812B1 (en) |
| GB (1) | GB1449061A (en) |
| IT (1) | IT999530B (en) |
-
1972
- 1972-09-02 DE DE19722243341 patent/DE2243341C3/en not_active Expired
-
1973
- 1973-05-18 BE BE6044166A patent/BE799787A/en not_active IP Right Cessation
- 1973-08-22 IT IT6950573A patent/IT999530B/en active
- 1973-08-29 FR FR7331234A patent/FR2197812B1/fr not_active Expired
- 1973-08-31 CH CH1257073A patent/CH585669A5/xx not_active IP Right Cessation
- 1973-08-31 GB GB4100873A patent/GB1449061A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2197812B1 (en) | 1978-01-27 |
| CH585669A5 (en) | 1977-03-15 |
| IT999530B (en) | 1976-03-10 |
| DE2243341A1 (en) | 1974-04-04 |
| BE799787A (en) | 1973-09-17 |
| FR2197812A1 (en) | 1974-03-29 |
| DE2243341B2 (en) | 1975-02-20 |
| DE2243341C3 (en) | 1975-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |