| Title of Invention | COATED PEROXYGEN COMPOUNDS WITH CONTROLLED RELEASE AND A PROCESS FOR THEIR PREPARATION AND THEIR USE |
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| Abstract | The invention relates to coated peroxygen compounds; in particular coated sodium percarbonate particles, with a delayed release of the active oxygen ((= increased dissolving time) Particles according to the invention comprise an innermost, shell layer, comprising at least one hydrate-forming inorganic salt, and an outer shell layer, comprising 0,2 to 3 wt.% alkali metal silicate with a modulus of greater than 2.5, in particular 3 to 5, the outer layer having been prepared using an alkali metal silicate solution with an alkali metal silicate concentration in the rangs from 2 to 20 wt.%. By lowering the alkali metal silicate concentration in the solution to be used, the dissolving time can be increased for the same shell amount. The dissolving time can be increased greatly by the layer sequence and the concentration of the solution, at a low amount of alkali netal silicate. |
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01408-kolnp-2005-description complete.pdf
01408-kolnp-2005-international publication.pdf
1408-kolnp-2005-granted-abstract.pdf
1408-kolnp-2005-granted-claims.pdf
1408-kolnp-2005-granted-correspondence.pdf
1408-kolnp-2005-granted-description (complete).pdf
1408-kolnp-2005-granted-examination report.pdf
1408-kolnp-2005-granted-form 1.pdf
1408-kolnp-2005-granted-form 18.pdf
1408-kolnp-2005-granted-form 2.pdf
1408-kolnp-2005-granted-form 3.pdf
1408-kolnp-2005-granted-form 5.pdf
1408-kolnp-2005-granted-gpa.pdf
1408-kolnp-2005-granted-letter patent.pdf
1408-kolnp-2005-granted-reply to examination report.pdf
1408-kolnp-2005-granted-specification.pdf
1408-kolnp-2005-granted-translated copy of priority document.pdf
| Patent Number | 220997 | |||||||||||||||
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| Indian Patent Application Number | 01408/KOLNP/2005 | |||||||||||||||
| PG Journal Number | 24/2008 | |||||||||||||||
| Publication Date | 13-Jun-2008 | |||||||||||||||
| Grant Date | 11-Jun-2008 | |||||||||||||||
| Date of Filing | 20-Jul-2005 | |||||||||||||||
| Name of Patentee | DEGUSSA AG | |||||||||||||||
| Applicant Address | BENNIGSENPLATZ 1, 40474 DÜSSELDORF | |||||||||||||||
Inventors:
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| PCT International Classification Number | C11D 3/39 | |||||||||||||||
| PCT International Application Number | PCT/EP2003/013535 | |||||||||||||||
| PCT International Filing date | 2003-12-02 | |||||||||||||||
PCT Conventions:
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