Patent DE857984C successfully refreshed from Google Patents.
US6841614B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer granules produced by fluidized bed granulation
Assignee: Henkel AG and Co KGaA
•
Filing: 1999-10-20
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Granted: 2005-01-11
•
Expires: 2019-10-20
Abstract
Abstract The invention relates to a method of producing soluble polymer granules which are suitable for use in washing and/or cleaning surfactants. According to said method, an aqueous preparation of the polymer which contains at least 30% by weight polymer, optionally in admixture with other washing and/or cleaning surfactant ingredients, is granulated and at the same time dried batchwise or continuously, preferably continuously, in a circular fluidized bed. In said fluidized bed, an eddy flow about the vertical axis of the apparatus is produced above the ground of the fluidized bed by means of an air inlet. The invention also relates to soluble, spherical polymer granules with a polymer content of 50 to 95% by weight and to washing or cleaning surfactants containing the inventive granules.
Inventors
- 👤 Georg Assmann
- 👤 Wilfried Raehse
- 👤 Rene Andres Artiga Gonzalez
- 👤 Beatrix Kottwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; B; B01; B01J; B01J2/00; B01J2/16; C11; C11D; C11D11/00; C11D11/0082; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761; C11D3/3769; C11D3/3776; C08J2300/00; C08J2300/14
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
76 words
A process for the production of soluble polymer granules suitable as an additive in detergents and/or cleaning compositions, comprising the steps of simultaneously granulating and drying, in a fluidized bed dryer having a diffusor plate, a water-based preparation comprising at least 30% by weight of one or more soluble polymers, in which dryer one or more air inlets above the diffusor plate produce an eddy flow in the bed about the vertical axis of the dryer.
Claim 2
Dependent Claim
76 words
A process for the production of soluble polymer granules suitable as an additive in detergents and/or cleaning compositions, comprising the steps of simultaneously granulating and drying, in a fluidized bed dryer having a diffusor plate, a water-based preparation comprising at least 30% by weight of one or more soluble polymers, in which dryer one or more air inlets above the diffusor plate produce an eddy flow in the bed about the vertical axis of the dryer.
Claim 3
Dependent Claim
64 words
The process of claim 1 , carried out in a round fluidized bed dryer having an additional air supply system disposed above the diffusor plate, said air supply system having at least two air injection tubes arranged at a uniform distance apart and at the same level above the diffusor at an angle of incidence α of at least 30° and at most 90°.
Claim 4
Dependent Claim
30 words
The process of claim 2 , wherein the air injection tubes are situated above the diffusor plate at a maximum of 50% of the resting height of the bed material.
Claim 5
Dependent Claim
32 words
The process of claim 3 , wherein the air injection tubes are situated above the diffusor plate at a maximum of 10% to 30% of the resting height of the bed material.
Claim 6
Dependent Claim
19 words
The process of claim 2 , wherein the additional air supply system comprises more than two air injection tubes.
Claim 7
Dependent Claim
19 words
The process of claim 5 , wherein the additional air supply system comprises more than four air injection tubes.
Claim 8
Dependent Claim
19 words
The process of claim 2 , wherein the angle of incidence of the injection tubes is 30° to 75°.
Claim 9
Dependent Claim
19 words
The process of claim 4 , wherein the angle of incidence of the injection tubes is 45° to 70°.
Claim 10
Dependent Claim
17 words
The process of claim 8 , wherein the angle of incidence of the injection tubes is 60°.
Claim 11
Dependent Claim
19 words
The process of claim 1 , wherein the one or more soluble polymers comprise one or more polymeric polycarboxylates.
Claim 12
Dependent Claim
32 words
The process of claim 10 , wherein the one or more polymeric polycarboxylates comprise one or more homopolymers or copolymers of acrylic, methacrylic, or maleic acid or water-soluble salts of these polymers.
Claim 13
Dependent Claim
22 words
The process of claim 11 , wherein the one or more polymeric polycarboxylates have a molecular weight of 500 to 100,000 g/mol.
Claim 14
Dependent Claim
32 words
The process of claim 1 , wherein the one or more soluble polymers comprise one or more homopolymers or copolymers of vinyl pyrrolidone having a molecular weight of 1000 to 200,000 g/mol.
Claim 15
Dependent Claim
26 words
The process of claim 13 , wherein the one or more homopolymers or copolymers of vinyl pyrrolidone have a molecular weight of 1000 to 100,000 g/mol.
Claim 16
Dependent Claim
15 words
The process of claim 1 , wherein the water-based preparation comprises one or more dextrins.
Claim 17
Dependent Claim
20 words
The process of claim 15 , wherein the one or more dextrins are introduced into the dryer in solid form.
Claim 18
Dependent Claim
44 words
The process of claim 15 , wherein the water-based preparation comprises the one or more dextrins and one or more polymeric polycarboxylates in the form of a homogeneous solution of the two polymers, said solution being sprayed into a granulation chamber in the dryer.
Claim 19
Dependent Claim
19 words
The process of claim 1 , wherein one or more inorganic carrier materials are admixed with the water-based preparation.
Claim 20
Dependent Claim
25 words
The process of claim 18 , wherein the one or more inorganic carrier materials comprise one or more of sodium sulfate, sodium carbonate, or zeolites.
Claim 21
Dependent Claim
55 words
Soluble polymer granules suitable as an additive in detergents and/or cleaning compositions, comprising generally spherical granules containing 50% to 95% by weight of one or more soluble polymers, said polymers comprising one or more homopolymers or copolymers of vinyl pyrrolidone having a molecular weight of 1000 to 200,000 g/mol and at least one admixing component.
Claim 22
Dependent Claim
55 words
Soluble polymer granules suitable as an additive in detergents and/or cleaning compositions, comprising generally spherical granules containing 50% to 95% by weight of one or more soluble polymers, said polymers comprising one or more homopolymers or copolymers of vinyl pyrrolidone having a molecular weight of 1000 to 200,000 g/mol and at least one admixing component.
Claim 23
Dependent Claim
21 words
The soluble polymer granules of claim 20 , wherein the one or more soluble polymers comprise one or more polymeric polycarboxylates.
Claim 24
Dependent Claim
34 words
The soluble polymer granules of claim 21 , wherein the one or more polymeric polycarboxylates comprise one or more homopolymers or copolymers of acrylic, methacrylic, or maleic acid or water-soluble salts of these polymers.
Claim 25
Dependent Claim
24 words
The soluble polymer granules of claim 22 , wherein the one or more polymeric polycarboxylates have a molecular weight of 500 to 100,000 g/mol.
Claim 26
Dependent Claim
28 words
The soluble polymer granules of claim 20 , wherein the one or more homopolymers or copolymers of vinyl pyrrolidone have a molecular weight of 1000 to 100,000 g/mol.
Claim 27
Dependent Claim
13 words
The soluble polymer granules of claim 21 , comprising one or more dextrins.
Claim 28
Dependent Claim
24 words
The soluble polymer granules of claim 25 , wherein the weight ratio of dextrin to polymeric polycarboxylate in the granules is 4:1 to 1:2.
Claim 29
Dependent Claim
35 words
The soluble polymer granules of claim 20 , comprising less than 40% by weight of the at least one admixing component, wherein the at least one admixing component comprises one or more inorganic carrier materials.
Claim 30
Dependent Claim
25 words
The soluble polymer granules of claim 27 , wherein the one or more inorganic carrier materials comprise sodium sulfate, sodium carbonate, sodium citrate, or zeolites.
Claim 31
Dependent Claim
21 words
The soluble polymer granules of claim 27 , comprising less than 25% by weight of the at least one admixing component.
Claim 32
Dependent Claim
21 words
The soluble polymer granules of claim 20 , comprising 75% to 90% by weight of the one or more soluble polymers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-01-11 | 2008-07-12 | 2009-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-01-11 | 2012-07-12 | 2013-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-01-11 | 2016-07-12 | 2017-01-11 | $7700.00 | Window Closed / Lapsed |