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US 7,064,100 B2Granted
Method for producing bleach activator granules
AssigneeHenkel Komanditgesellschaft auf Aktien (Henkel Kgaa)
InventorsGeorg Assmann, Olaf Joachim Blochwitz, Horst-Dieter Speckmann, Jörg Poethkow, Birgit Middelhauve, Gerhard Blasey
Life of this patent
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Abstract
The present invention relates to methods for producing bleach-activator-containing granules from a water-containing bleach activator preparation form by granulation and simultaneous drying in a fluidized-bed and subsequent consolidation of the primary granules by treatment with an aqueous polymer and/or phosphonate solution, in a fluidized bed.
Claims29
A method for producing a particulate preparation comprising a compound according to formula (I):
- wherein:
- R1 is —H, —CH3, optionally substituted (C2–C24)-alkyl radical, optionally substituted (C2–C24)-alkenyl radical, optionally substituted alkyl radical containing a (C1–C24)-alkyl group, or optionally substituted alkenylaryl radical containing a (C1–C24)-alkyl group;
- R2 and R3 are independently —CH2—CN, —CH3, —CH2—CH3, —CH2—CH2–CH3, —CH(CH3)—CH3, —CH2—OH, —CH2—CH2—OH, —CH(OH)—CH3, —CH2—CH2–CH2—OH, —CH2—CH(OH)—CH3, —CH(OH)—CH2—CH3, or —(CH2CH2—O)nH;
- R4 and R5 are independently —H, —CH3, optionally substituted (C2–C24)-alkyl radical, optionally substituted (C2–C24)-alkenyl radical, optionally substituted alkyl radical containing a (C1–C24)-alkyl group, optionally substituted alkenylaryl radical containing a (C1–C24)-alkyl group, —CH2—CN, —CH2—CH3, —CH2—CH2–CH3, —CH(CH3)—CH3, —CH2—OH, —CH2—CH2—OH, —CH(OH)—CH3, —CH2—CH2—CH2—OH, —CH2—CH(OH)—CH3, —CH(OH)—CH2—CH3, or —(CH2CH2—O)nH;
- n is an integer of 1, 2, 3, 4, 5 or 6;
- X(−) is a charge-balancing anion;
- said particulate produced by the steps:
- a) preparation of an aqueous solution comprising cationic nitrile of formula (I) and optionally alkali metal cumenesulfonate;
- b) optional adjustment of the solution to an acidic pH;
- c) atomization and drying of the solution in a fluidized-bed apparatus;
- d) optional powdering of the resulting primary granules in the fluidized bed;
- e) consolidation of the optionally powdered primary granules by
- subsequent spraying with an aqueous consolidation solution, with simultaneous drying in the same or optionally a downstream second fluidized-bed apparatus;
- f) discharge of the granules from the fluidized-bed apparatus and optional separation of the granules into acceptable granules and coarse/fine granules;
- g) optional return of the fine granules and/or the ground coarse granules into the fluidized bed in step c);
- and
- h) optional return of the fine granules and/or the ground coarse granules into the powdering step of step d).
14 more elements
A method for producing a particulate preparation comprising:
- providing an aqueous solution comprising a cationic nitrile of formula (I):
- wherein:
- R1 is —H, —CH3, optionally substituted (C2–C24)-alkyl radical, optionally substituted (C2–C24)-alkenyl radical, optionally substituted alkyl radical containing a (C1–C24)-alkyl group, or optionally substituted alkenylaryl radical containing a (C1–C24)-alkyl group;
- R2 and R3 are independently —CH2—CN, —CH3, —CH2—CH3, —CH2—CH2–CH3, —CH(CH3)—CH3, —CH2—OH, —CH2—CH2—OH, —CH(OH)—CH3, —CH2—CH2–CH2—OH, —CH2—CH(OH)—CH3, —CH(OH)—CH2—CH3, or —(CH2CH2—O)nH, wherein n is an integer of 1, 2, 3, 4, 5 or 6;
- R4 and R5 are independently R1 or R2;
- and
- X(−) is a charge-balancing anion;
- atomizing and drying the solution in a fluidized-bed apparatus to form primary granules;
- consolidating the granules by subsequent spraying with an aqueous consolidation solution with simultaneous drying;
- and
- discharging the granules from the fluidized-bed apparatus.
8 more elements
Dependencies are inferred from the claim text.