cement admixture and cement composition nippon shokubai

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

Cement admixture and cement composition - Nippon

1998-5-21  The cement admixture (11), according to the present invention, displays a little inferior performance when compared with the cement admixtures (1) to (3) according to the present invention, but can display performance level therewith by increasing the amount of the cement admixture (11) as combined in the cement composition.

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Cement admixture and cement composition - Nippon

2004-3-4  Preferred examples of the hydraulic composition comprising a hydraulic material, water and the cement admixture of the present invention, if necessary together with a fine aggregate (e.g. sand) or a coarse aggregate (e.g. crushed stone), are cement paste, mortar, concrete and plaster and the like Among the hydraulic compositions mentioned above ...

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Cement admixture and cement composition - Nippon

An admixture for a cementitious composition comprising a water-soluble polymer (C) and water, wherein a foam height obtainable by causing a calcium chloride-containing aqueous medium solution of said cement admixture to foam is not higher than 70% of the foam height obtainable by causing an aqueous medium solution of said cement admixture to ...

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Cement admixture and cement composition - Nippon

The invention claimed is: 1. An admixture for cement comprising two polymers, namely a polymer (A1) and a polymer (B1), as essential constituents in a ratio of polymer (A1) to polymer (B1) between 1 to 99 to 99 to 1 by mass, wherein the polymer (A1) is a polymer comprising, as essential constituent units, a constituent unit (I) derived from an unsaturated (poly) alkylene glycol ether monomer ...

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Cement admixture and cement composition - NIPPON

FIELD OF THE INVENTION [0001] The present invention relates to a cement admixture and a cement composition comprising the same. PRIOR ART [0002] A cement paste prepared by adding water to cement, a mortar prepared by admixing sand, which is a fine aggregate, therewith, and a concrete prepared by further admixing gravel, which is a coarse aggregate, therewith are used in large

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Cement admixture and cement composition - Patent JP ...

2007-3-20  A cement admixture and a cement composition excellent in dispersibility and retention are provided. A constitutional unit (I) derived from an unsaturated polyalkylene glycol ether monomer (a) represented by the following general formula (1) and a constitution derived from an unsaturated monocarboxylic acid monomer (b) A cement admixture containing a copolymer comprising unit (II) as

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US Patent for Cement admixture and cement composition ...

1999-1-1  The present invention provides a cement admixture and a cement composition, both of which displays little dependence of the water-reducibility upon temperature in that these cement admixture and cement composition involve little slump loss at high temperature and little increase in the amount of addition at low temperature. The cement admixture comprises the following essential components ...

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Polymers for concrete admixture : AQUALOC™ NIPPON

2021-6-10  The report is presented in Portable Document Format. PDF will allow you to view the Annual Report on-line from most computers. Adobe Reader is free and is required to view and print PDF files.

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US20030087993A1 - Cement admixture and cement

The objective of the present invention is to provide a cement additive which causes no increase in the amount of air and can thus stably maintain the amount of air entrained even when the time of kneading is prolonged in the production of cement compositions. A further object is to provide a cement admixture having such air entraining properties and having a high level of water-reducing ...

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US6166112A - Cement admixture and cement composition ...

The invention provides: a cement admixture which has excellent cement dispersibility and can afford high slump retainability; and a cement composition which has excellent cement dispersibility and high slump retainability. The cement admixture comprises a polycarboxylic acid as an effective component, wherein the polycarboxylic acid is obtained by a process including the steps of: charging "a ...

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Cement admixture and cement composition - Patent JP ...

2007-3-20  A cement admixture and a cement composition excellent in dispersibility and retention are provided. A constitutional unit (I) derived from an unsaturated polyalkylene glycol ether monomer (a) represented by the following general formula (1) and a constitution derived from an unsaturated monocarboxylic acid monomer (b) A cement admixture containing a copolymer comprising unit (II) as

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Cement admixture and cement composition - Patent JP ...

patent: jp-h11268940-a: inventor: yamashita akihiko. hirata takeshi. yuasa tsutomu. niwa hirokazu. assignee: nippon catalytic chem ind. date

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US Patent for Cement admixture and cement composition ...

1999-1-1  The present invention provides a cement admixture and a cement composition, both of which displays little dependence of the water-reducibility upon temperature in that these cement admixture and cement composition involve little slump loss at high temperature and little increase in the amount of addition at low temperature. The cement admixture comprises the following essential components ...

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US Patent for Concrete composition method of producing ...

2003-2-4  TECHNICAL FIELD. The present invention relates to a concrete composition, a method of producing concrete compositions, and a cement admixture. More particularly, it relates to a concrete composition comprising cement, water, a fine aggregate and a coarse aggregate as essential constituents and capable of giving curing products excellent in strength and durability, a method of

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US20030087993A1 - Cement admixture and cement

The objective of the present invention is to provide a cement additive which causes no increase in the amount of air and can thus stably maintain the amount of air entrained even when the time of kneading is prolonged in the production of cement compositions. A further object is to provide a cement admixture having such air entraining properties and having a high level of water-reducing ...

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Polymers for concrete admixture : AQUALOC™ NIPPON

2021-6-10  The report is presented in Portable Document Format. PDF will allow you to view the Annual Report on-line from most computers. Adobe Reader is free and is required to view and print PDF files.

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Cement Additive, Cement Composition, And Raw Material

U.S. patent application number 15/742952 was filed with the patent office on 2019-03-21 for cement additive, cement composition, and raw material for cement additive. The applicant listed for this patent is Nippon Shokubai Co., Ltd.. Invention is credited to Kimiaki Nishimura, Takeshi Takayama.

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Shrinkage reducing admixture (SRA ... - shokubai.co.jp

2021-9-9  has little effect on fresh concrete property and workability. Can be used with expansive addictive and achieve concrete drying shrinkage almost zero. Non-dangerous goods. Easy to dissolve in water, easy to handle. Mechanism of shrinkage reducing (The difference between AQUAGUARD™TD-200 and common shrinkage reducing admixture)

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Adsorbed Conformations of PCE Superplasticizers in

2017-11-30  Copolymer for cement admixtures and its production process and use. US Patent 6727315, Apr. assigned to Nippon Shokubai (2004). 41. Teresa, M.

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Building Construction NIPPON SHOKUBAI

2021-9-9  Products. Water seal agent for construction, Water swelling rubber, Sludge solidifying material, Additives for drilling, H section steel drawn sheet, Friction reduce agent, Soil Thickener. Super absorbent polymers: AQUALIC CA™. Salt-tolerant water-absorbing polymers: AQUALIC CS™.

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Building Construction NIPPON SHOKUBAI

2021-9-9  Products. Water seal agent for construction, Water swelling rubber, Sludge solidifying material, Additives for drilling, H section steel drawn sheet, Friction reduce agent, Soil Thickener. Super absorbent polymers: AQUALIC CA™. Salt-tolerant water-absorbing polymers: AQUALIC CS™.

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Cement admixture and cement composition - Patent JP ...

patent: jp-h11268940-a: inventor: yamashita akihiko. hirata takeshi. yuasa tsutomu. niwa hirokazu. assignee: nippon catalytic chem ind. date

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NIPPON SHOKUBAI

2021-9-29  NIPPON SHOKUBAI CO., LTD [Tokyo Stock Exchange - TOKSE: 4114.T] (“NIPPON SHOKUBAI”) is deeply saddened by the loss of life resulting from the explosion and fire at the Himeji Plant on September 29 and extends its sincere condolences to family members. In addition, NIPPON SHOKUBAI extends its sincere apologies to the individuals who were ...

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New Trend in the Development of Concrete Admixtures in

Polycarboxylate-(PCE-) based high-range water-reducing admixture (HRWRA) was firstly introduced by Nippon Shokubai, Inc. (cement dispersant, JP 842,022; S59-018338; 1981), and then it became one ...

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EPO - T 0076/18 (Cement admixtures/Nippon Shokubai) of

2020-3-4  D4 was the closest prior art. Even if D5 was considered to be the closest prior art the skilled person could not arrive at the cement admixture defined in claim 1 of the main request in an obvious manner. The objective problem to be solved was the provision of a cement admixture having improved dispersing performance at a low water/cement ratio.

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EPO - T 0544/94 (Cement dispersant/NIPPON SHOKUBAI)

1997-1-22  The essential requirement for a cement dispersant is its ability to increase the flowability of a cement composition at a given water content in the short period - a matter of a few hours - between the addition of water and the setting of the cement, whereas the essential requirement for a pigment dispersant is its ability to increase shelf ...

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Synthesis and performance of methacrylic ester based ...

2008-10-1  The cement chosen for the experiments was an ordinary portland cement OPC (CEM I 32.5 R from HeidelbergCement, Rohrdorf plant) which contains approximately 9 wt.% C 3 A and therefore requires a high dosage of SP. The phase composition determined by XRD is given in Table 2.

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国外聚羧酸系混凝土减水剂合成工艺解析之二

2005-3-3  日本NIPPON CATALYTIC CHEM公司YAMASHITA等人研究认为:早期聚羧酸减水剂采用有端羟基的聚合物很容易引起凝胶化,如工业化生产的话,就需要加入大量链转移剂来防止凝胶现象发生。他们在1999.1.1申请的Cement Admixture and Cement Composition ...

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Hiroshi Mitsukawa Inventions, Patents and Patent ...

2001-4-23  Cement admixture and cement composition comprising this Publication number: 20010052308 Abstract: The present invention provides: a cement admixture which displays excellent cracking inhibition effect and brings about good fluidity even if the quantity of the cement admixture as added is small; and a cement composition comprising this cement ...

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Cement additive, method for producing the same, and ...

1996-12-5  Nippon Shokubai Kagaku Kogyo Co, Ltd. (Osaka, JP) 发明人: H Tahara,H Ito,Y Mori,M Mizushima 展开 被引量: 47 摘要: A cement additive is added to increase flowability of a cement composition and to prevent a slump loss, but those or the ...

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