公开(公告)号：DE69725266D1

公开(公告)日：2003-11-06

申请号：DE69725266

申请日：1997-06-18

Applicant: KAO CORP

Inventor： SATOH HARUYUKI ,  YAMATO FUJIO ,  KONO YOSHINAO ,  NAKAMURA SAYURI

IPC: C04B24/26 ,  C04B24/32 ,  C04B40/00 ,  C08F290/06

Abstract: PCT No. PCT/JP97/02095 Sec. 371 Date Feb. 20, 1998 Sec. 102(e) Date Feb. 20, 1998 PCT Filed Jun. 18, 1997 PCT Pub. No. WO97/48656 PCT Pub. Date Dec. 24, 1997A concrete admixture is provided, which is effective in imparting fluidity to a hydraulic composition such as cement paste, mortar or concrete, particularly in maintaining the fluidity of the composition and which hardly retards the hardening property of the composition. The concrete admixture comprises a copolymer comprising, as structural units, units derived from an ethylenically unsaturated monomer (a) having 25 to 300 moles of C2-C3 oxyalkylene groups per mole of copolymer and units derived from a monomer (b) of an alkyl, alkenyl or hydroxyalkyl ester of an ethylenically unsaturated mono- or di-carboxylic acid.

公开(公告)号：MY117728A

公开(公告)日：2004-07-31

申请号：MYPI9702777

申请日：1997-06-19

Applicant: KAO CORP

Inventor： SATOH HARUYUKI ,  YAMATO FUJIO ,  KONO YOSHINAO ,  NAKAMURA SAYURI

IPC: C04B24/26 ,  C04B24/32 ,  C04B40/00 ,  C08F290/06

Abstract: A CONCRETE ADMIXTURE IS PROVIDED, WHICH IS EFFECTIVE IN IMPARTING FLUIDITY TO A HYDRAULIC COMPOSITION SUCH AS CEMENT PASTE, MORTAR OR CONCRETE, PARTICULARLY IN MAINTAINING THE FLUIDITY OF THE COMPOSITION AND WHICH HARDLY RETARDS THE HARDENING PROPERTY OF THE COMPOSITION. SAID CONCRETE ADMIXTURE COMPRISES A COPOLYMER COMPRISING, AS STRUCTURAL UNITS, UNITS DERIVED FROM AN ETHYLENICALLY UNSATURATED MONOMER (A) HAVING 25 TO 300 MOLES OF C2-C3 OXYALKYLENE GROUPS AND UNITS DERIVED FROM A MONOMER (B) OF AN ALKYL, ALKENYL OR HYDROXYALKYL ESTER OF AN ETHYLENICALLY UNSATURATED MONO- OR DI- CARBOXYLIC ACID.

公开(公告)号：DE69725266T2

公开(公告)日：2004-07-22

申请号：DE69725266

申请日：1997-06-18

Applicant: KAO CORP

Inventor： SATOH HARUYUKI ,  YAMATO FUJIO ,  KONO YOSHINAO ,  NAKAMURA SAYURI

IPC: C04B24/26 ,  C04B24/32 ,  C04B40/00 ,  C08F290/06

Abstract: PCT No. PCT/JP97/02095 Sec. 371 Date Feb. 20, 1998 Sec. 102(e) Date Feb. 20, 1998 PCT Filed Jun. 18, 1997 PCT Pub. No. WO97/48656 PCT Pub. Date Dec. 24, 1997A concrete admixture is provided, which is effective in imparting fluidity to a hydraulic composition such as cement paste, mortar or concrete, particularly in maintaining the fluidity of the composition and which hardly retards the hardening property of the composition. The concrete admixture comprises a copolymer comprising, as structural units, units derived from an ethylenically unsaturated monomer (a) having 25 to 300 moles of C2-C3 oxyalkylene groups per mole of copolymer and units derived from a monomer (b) of an alkyl, alkenyl or hydroxyalkyl ester of an ethylenically unsaturated mono- or di-carboxylic acid.

公开(公告)号：ID17198A

公开(公告)日：1997-12-11

申请号：ID972154

申请日：1997-06-23

Applicant: KAO CORP

Inventor： SATOH HARUYUKI ,  YAMATO FUJIO ,  KONO YOSHINAO ,  NAKAMURA SAYURI

IPC: C04B24/26 ,  C04B24/32 ,  C04B40/00 ,  C08F290/06

Abstract: PCT No. PCT/JP97/02095 Sec. 371 Date Feb. 20, 1998 Sec. 102(e) Date Feb. 20, 1998 PCT Filed Jun. 18, 1997 PCT Pub. No. WO97/48656 PCT Pub. Date Dec. 24, 1997A concrete admixture is provided, which is effective in imparting fluidity to a hydraulic composition such as cement paste, mortar or concrete, particularly in maintaining the fluidity of the composition and which hardly retards the hardening property of the composition. The concrete admixture comprises a copolymer comprising, as structural units, units derived from an ethylenically unsaturated monomer (a) having 25 to 300 moles of C2-C3 oxyalkylene groups per mole of copolymer and units derived from a monomer (b) of an alkyl, alkenyl or hydroxyalkyl ester of an ethylenically unsaturated mono- or di-carboxylic acid.

公开(公告)号：JPH1081549A

公开(公告)日：1998-03-31

申请号：JP15070997

申请日：1997-06-09

Applicant: KAO CORP

Inventor： SATO HARUYUKI ,  KONO YOSHINAO ,  NAKAMURA SAYURI ,  YAMATO FUJIO

IPC: C04B24/26 ,  B01F17/52 ,  C04B103/32 ,  C08F290/06 ,  C08L33/04

Abstract: PROBLEM TO BE SOLVED: To obtain a cement admixture improved in slump retention without exhibiting cement hardening retardancy, consisting or a vinyl copolymer composed of an oxyalkylene group-bearing monomer unit and other specific monomer unit(s). SOLUTION: This cement admixture consists of a copolymer composed of (a) a structural unit derived from an ethylenic unsaturated monomer bearing 25-300mol of a 2-3C oxyalkylene group and (b) another structural unit derived from an ehtylenic unsaturated mono- or dicarboxylic alkyl, alkenyl or hydroxyalkyl ester monomer, and preferably, furthermore, (c) a third structural unit derived from a monomer, i.e., an ethylenic unsaturated monocarboxylic acid (salt), or ethylenic unsaturated dicarboxylic acid, its anhydride, or salt thereof.