US4946505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing concrete
Assignee: Chemische Werke Brockhues AG
•
Filing: 1989-07-17
•
Granted: 1990-08-07
•
Expires: 2009-07-17
Abstract
Abstract Coloring materials used in a process of dyeing concrete consist of pigment granules other than compacted or briquetted granules. The granules consist of one or more pigments, one or more binders for promoting the dispersing of the pigments in the concrete, and optional other additives. Such pigment granules, particularly bead granules, will easily dissolve in the concrete mixer and will be homogeneously dispersed in the concrete.
Inventors
- 👤 Axel E. Jungk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:27
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/02; C04B14/022; C04B14/30; C04B16/00; C04B18/00; C04B18/02; C04B18/022; C04B20/00; C04B20/02; C04B40/00; C04B40/0028; C04B40/06; C09; C09C; C09C1/00; C09C1/0081; C09C1/22; C09C1/24; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C09C3/00; C09C3/04; C09C3/045; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
106 words
A process of dyeing concrete comprising mixing pigment-containing granules with cement and aggregate at conditions sufficient to result in a generally homogeneous dispersal of pigment in the concrete, wherein: pigment-containing granules other than compacted or briquette granules are used, each granule consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and of at least one binder for promoting the dispersal of the pigment in the concrete, at least 90% of the granules have a particle size of about 20 microns or more, and the finite water content of the granules is not in excess of about 4.2%.
Claim 2
Dependent Claim
106 words
A process of dyeing concrete comprising mixing pigment-containing granules with cement and aggregate at conditions sufficient to result in a generally homogeneous dispersal of pigment in the concrete, wherein: pigment-containing granules other than compacted or briquette granules are used, each granule consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and of at least one binder for promoting the dispersal of the pigment in the concrete, at least 90% of the granules have a particle size of about 20 microns or more, and the finite water content of the granules is not in excess of about 4.2%.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the weight of the binder in each granule comprises 0.1 to 15% of the total weight of the granule.
Claim 4
Dependent Claim
60 words
A process according to claim 1, characterized in that the binder comprises at least one material selected from the group consisting of alkylbenzene sulfonate, alkylnaphthalene sulfonate, lignin sulfonate, a sulfated polyglycol ether, a melamineformaldehyde condensate, a naphthalene-formaldehyde condensate, gluconic acid, a salt of low-molecular-weight partial ester of a styrene-maleic anhydride copolymer and a copolymer of vinyl acetate and crotonic acid.
Claim 5
Dependent Claim
15 words
A process according to claim 1, characterized in that the binder comprises a lignin sulfonate.
Claim 6
Dependent Claim
16 words
A process according to claim 1, characterized in that the granules are prepared by built-up granulation.
Claim 7
Dependent Claim
23 words
A process according to claim 1, characterized in that the granules have been made by drying a mixture comprising pigment, binder and liquid.
Claim 8
Dependent Claim
14 words
A process according to claim 1 characterized in that the granules further contain additives.
Claim 9
Dependent Claim
30 words
A process according to claim 1 wherein said pigment granules are formed into beads by spray drying a mixture comprising pigment and binder prior to mixing with aggregate and cement.
Claim 10
Dependent Claim
25 words
A process according to claim 1, characterized in that the granules have been made by the spray-granulation of a mixture comprising pigment, binder and liquid.
Claim 11
Dependent Claim
15 words
A process according to claim 9, characterized in that the liquid consists essentially of water.
Claim 12
Dependent Claim
92 words
A process of dyeing concrete comprising mixing pigment-containing granules with cement and aggregate at conditions sufficient to result in a generally homogeneous dispersal of pigment in the concrete, wherein: pigment-containing granules other than compacted or briquette granules are used as a coloring material, each granule consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and of at least one binder for promoting the dispersal of the pigment in the concrete, the finite water content of the granules is not in excess of 4.2%.
Claim 13
Dependent Claim
92 words
A process of dyeing concrete comprising mixing pigment-containing granules with cement and aggregate at conditions sufficient to result in a generally homogeneous dispersal of pigment in the concrete, wherein: pigment-containing granules other than compacted or briquette granules are used as a coloring material, each granule consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and of at least one binder for promoting the dispersal of the pigment in the concrete, the finite water content of the granules is not in excess of 4.2%.
References Cited (Backward Citations)
US20776A
Cited
US2221175A
Cited
US3068109A
Cited
GB1537663A
Cited
US4336546A
Cited
US4162287A
Cited
DE2940156A1
Cited
FR2450273A1
Cited
US4366139A
Cited
US4308073A
Cited
JPS58125759A
Cited
US4451231A
Cited
JPH049224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |