Patent US4309299A successfully refreshed from Google Patents.
US4309299A
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US
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Detergent composition having improved chlorine retention characteristic and method of making same
Assignee: Lever Brothers Co
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Filing: 1980-09-04
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Granted: 1982-01-05
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Expires: 2000-09-04
Abstract
Abstract The premature release of chlorine from chlorine-releasing bleaching agents in a particulate detergent, caused by the action on such a bleaching agent by some other component in the detergent, is prevented by compacting and granulating a mixture of said other component, preferably with additional constituents which do not have the chlorine-releasing effect, and then mixing those granules with the chlorine-releasing bleaching agent and other appropriate detergent constituents. The resulting novel detergent is a mixture of the thus-produced granules with particles of the said other appropriate detergent constituents.
Inventors
- 👤 Anthony A. Rapisarda
- 👤 Joseph Romeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:10
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3951
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
71 words
A method of improving chlorine retention of a particulate detergent composition including a chlorine-releasing bleaching agent and one or more other components which, if the chlorine releasing bleaching agent is exposed thereto, will tend to cause premature chlorine release, which consists essentially of compacting and then forming granules of said other component in the substantial absence of said chlorine-releasing bleaching agent and then mixing said granules with said chlorine-releasing bleaching agent.
Claim 2
Independent Claim
71 words
A method of improving chlorine retention of a particulate detergent composition including a chlorine-releasing bleaching agent and one or more other components which, if the chlorine releasing bleaching agent is exposed thereto, will tend to cause premature chlorine release, which consists essentially of compacting and then forming granules of said other component in the substantial absence of said chlorine-releasing bleaching agent and then mixing said granules with said chlorine-releasing bleaching agent.
Claim 3
Dependent Claim
18 words
The method of claim 1, in which said granules contain no more than a minimal amount of phosphorus.
Claim 4
Dependent Claim
13 words
The method of claim 1, in which said other component comprises a carboxymethyloxysuccinate.
Claim 5
Dependent Claim
13 words
The method of claim 1, in which said other component comprises a citrate.
Claim 6
Dependent Claim
31 words
The method of claim 1, in which said granules are formed of a mixture with said other components at least one but not all members of which have said chlorine-releasing effect.
Claim 7
Dependent Claim
49 words
The method of claim 1, in which said granules of said chlorine-releasing bleaching agent are mixed with non-premature release components selected from the group consisting of builders, soil suspending agents, hydrotropes, corrosion inhibitors, dyes, perfumes, fillers, enzymes, suds depressants, anti-tarnishing agents, cationic detergents, water softeners, buffers and mixtures thereof.
Claim 8
Dependent Claim
14 words
The method of claim 1, in which said granules comprise detergent compound and builder.
Claim 9
Dependent Claim
15 words
The method of claim 2 in which said granules additionally comprise filler and deposition inhibitor.
Claim 10
Independent Claim
67 words
The method of producing a particulate detergent composition having improved chlorine retention characteristics, which consists essentially of: (a) mixing premature release constituents including detergent, builder, filler and other components in the substantial absence of chlorine-releasing bleaching agent; (b) then compacting the mixture formed in step (a) and forming granules thereof; and (c) thereafter mixing said granules with one or more additional components including a chlorine-releasing bleaching agent.
Claim 11
Independent Claim
67 words
The method of producing a particulate detergent composition having improved chlorine retention characteristics, which consists essentially of: (a) mixing premature release constituents including detergent, builder, filler and other components in the substantial absence of chlorine-releasing bleaching agent; (b) then compacting the mixture formed in step (a) and forming granules thereof; and (c) thereafter mixing said granules with one or more additional components including a chlorine-releasing bleaching agent.
Claim 12
Dependent Claim
11 words
The method of claim 9, wherein said composition is free flowing.
Claim 13
Dependent Claim
21 words
The method of claim 9, wherein said composition has a dynamic flow rate of about 90-130 cc of material per second.
Claim 14
Dependent Claim
18 words
The method of claim 9, wherein said composition has bulk density higher than about 0.7 grams per cc.
Claim 15
Dependent Claim
20 words
The method of claim 9, wherein the particle size of said granules range through 14 mesh retained on 25 mesh.
Claim 16
Dependent Claim
23 words
The method of claim 9, wherein the pressure used for said compacting is between 5600 and 12,000 pounds per inch of roll face.
Claim 17
Dependent Claim
30 words
The method of claim 9, wherein said granules are formed of a mixture with said other components at least one but not all members of which have said chlorine-releasing effect.
Claim 18
Dependent Claim
35 words
The method of claim 9, wherein said other component is selected from the group consisting of soil suspending agents, hydrotropes, corrosion inhibitors, dyes, perfumes, enzymes, suds depressants, anti-tarnishing agent, water softeners, buffers and mixtures thereof.
Claim 19
Dependent Claim
46 words
A particulate detergent composition having improved chlorine retention characteristics consisting essentially of a mixture of a chlorine-releasing bleaching agent and granules prepared by compaction of an admixture comprising premature release constituents including detergent, builder, filler and other components in the substantial absence of chlorine-releasing bleaching agent.
Claim 20
Dependent Claim
46 words
A particulate detergent composition having improved chlorine retention characteristics consisting essentially of a mixture of a chlorine-releasing bleaching agent and granules prepared by compaction of an admixture comprising premature release constituents including detergent, builder, filler and other components in the substantial absence of chlorine-releasing bleaching agent.
Claim 21
Dependent Claim
18 words
The composition of claim 17, in which said granules contain no more than a minimal amount of phosphorus.
Claim 22
Dependent Claim
13 words
The composition of claim 17, in which said granule constituents comprise a carboxymethyloxysuccinate.
Claim 23
Dependent Claim
13 words
The composition of claim 17, in which said granule constituents comprise a citrate.
Claim 24
Dependent Claim
11 words
The composition of claim 17 wherein said composition is free flowing.
Claim 25
Dependent Claim
21 words
The composition of claim 17 wherein said composition has a dynamic flow rate of about 90-130 cc of material per second.
Claim 26
Dependent Claim
18 words
The composition of claim 17 wherein said composition has bulk density higher than about 0.7 grams per cc.
Claim 27
Dependent Claim
20 words
The composition of claim 17 wherein the particle size of said granules range through 14 mesh retained on 25 mesh.
Claim 28
Dependent Claim
23 words
The composition of claim 17 wherein the pressure used for said compaction is between 5600 and 12,000 pounds per inch of roll face.
Claim 29
Dependent Claim
30 words
The composition of claim 17 wherein said granules are formed of a mixture with said other components at least one but not all members of which have said chlorine-releasing effect.
Claim 30
Dependent Claim
35 words
The composition of claim 17 wherein said other component is selected from the group consisting of soil suspending agents, hydrotropes, corrosion inhibitors, dyes, perfumes, enzymes, suds depressants, anti-tranishing agents, water softeners, buffers and mixtures thereof.
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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) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |