US Patent No: 5,703,174
Number of patents in Portfolio can not be more than 2000
Air controlling superplasticizers
Stats
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Dec 30, 1997
Issued date -
Jun 21, 1995
filing date -
08/493,036
serial no -
In Force
status
Importance
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Abstract
Polymeric additives for hydraulic cement compositions which impart to the wet cement composition greater plasticity, lower slumploss over time, and water reduction capability without the problems of air entrainment associated with prior polymeric additives of this type. The superplasticizers have a carbon backbone formed by polymerization of ethylenically-unsaturated carboxylic acids, the backbone comprising carboxylic acid grafting sites to which are covalently attached a) air detraining functional side chains, which are first polyoxyalkylene groups of the general formula R.sup.4 --(OA.sup.2).sub.x --Q-- wherein Q=O or NH; A.sup.2 =C.sub.1 -C.sub.10 alkylene; x=1 to 200; and R.sup.4 =C.sub.1 -C.sub.10 alkyl, and b) second polyoxyalkylene groups of the general formula R.sup.5 --O--(A.sup.3 O).sub.y --(A.sup.3).sub.p --N.dbd., wherein A.sup.3 =C.sub.1 -C.sub.10 alkylene; y=1 to 200; p=1 to 50; and R.sup.5 =C.sub.1 -C.sub.10 alkyl.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,524,163 Cementiferous compositions | 9 | 1984 | |
| 4,814,014 Hydraulic cement additives and hydraulic cement compositions containing same | 58 | 1986 | |
| 4,960,465 Hydraulic cement additives and hydraulic cement compositions containing same | 43 | 1987 | |
| 4,948,429 Method of controlling air entrainment in concrete compositions | 67 | 1989 | |
| 4,946,506 Corrosion inhibiting hydraulic cement additives and compositions containing same | 16 | 1989 | |
| 5,156,679 Air-detrainer for hydraulic cement compositions | 20 | 1991 | |
| 5,393,343 Cement and cement composition having improved rheological properties | 79 | 1993 | |
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| 4,471,100 Copolymer and method for manufacture thereof | 67 | 1982 | |
| 4,500,693 Water soluble copolymer method for manufacture therefore and use thereof | 57 | 1984 | |
| 4,656,217 Reactive polymer, method for manufacturing thereof and use thereof | 10 | 1984 | |
| 5,137,945 Cement with sulfoalkyacrylate polymers | 4 | 1990 | |
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| 4,977,227 Lignosulfonic graft copolymer as a cement dispersant | 7 | 1988 | |
| 5,085,708 Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete | 18 | 1991 | |
| 5,162,402 Slump retaining agent | 31 | 1991 | |
| 5,176,753 Concrete admixture compositions | 12 | 1991 | |
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| 4,946,904 Additives for cement | 57 | 1988 | |
| 4,946,918 Synthetic resin compatibilizer | 11 | 1988 | |
| 5,142,036 Polyoxyalkylene alkenyl ether-maleic ester copolymer and use thereof | 31 | 1989 | |
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| 4,589,995 Maleic acid copolymer, production thereof and scale-preventing agent containing the same | 24 | 1984 | |
| 4,586,960 Cement admixture | 10 | 1984 | |
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| 4,892,586 Concrete composition for roller compacted placing method | 9 | 1988 | |
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| 4,968,755 Imidized acrylic polymers and process for their preparation | 9 | 1988 | |
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| 5,086,142 Copolymer acting as thickening agent for aqueous preparations having a pH above 5.5, a method for its preparation and its use as a thickening agent | 22 | 1991 | |
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| 5,369,198 Copolymers based on maleic acid derivatives and vinyl monomers, their production and application | 50 | 1994 | |
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| 4,229,224 Cementitious compositions | 25 | 1979 | |
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| 5,237,017 Process for producing imidized acrylic resins | 15 | 1990 | |
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| 4,800,220 Crosslinked carboxylic copolymers usable as thickeners in aqueous media and preparation thereof | 12 | 1987 | |
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| 4,745,159 Methacrylate resin composition and process for its preparation | 22 | 1987 | |
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| 5,028,271 Vinyl grafted lignite fluid loss additives | 41 | 1990 | |
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| 4,814,462 Polyoxyalkylene carbozole adduct | 3 | 1986 | |
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| 5,098,628 Centrifugal molding method for composite pipe having a resin concrete layer | 4 | 1991 | |
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| 4,223,120 Terpolymers of maleic anhydride and their use as scale control agents | 17 | 1978 | |
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| 4,338,239 Polyacrylate thickening agents | 42 | 1981 | |