IT1271877B - Additivo per composizioni cementizie. - Google Patents

Additivo per composizioni cementizie.

Info

Publication number
IT1271877B
IT1271877B ITRM940126A ITRM940126A IT1271877B IT 1271877 B IT1271877 B IT 1271877B IT RM940126 A ITRM940126 A IT RM940126A IT RM940126 A ITRM940126 A IT RM940126A IT 1271877 B IT1271877 B IT 1271877B
Authority
IT
Italy
Prior art keywords
additive
cementitious compositions
sulfation
polysaccharides
fluidity
Prior art date
Application number
ITRM940126A
Other languages
English (en)
Inventor
Yoshio Tanaka
Toshiyuki Uryu
Minoru Yaguchi
Original Assignee
Sandoz Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of ITRM940126A0 publication Critical patent/ITRM940126A0/it
Publication of ITRM940126A1 publication Critical patent/ITRM940126A1/it
Application granted granted Critical
Publication of IT1271877B publication Critical patent/IT1271877B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/38—Polysaccharides or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
    • C04B24/168—Polysaccharide derivatives, e.g. starch sulfate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B5/00—Preparation of cellulose esters of inorganic acids, e.g. phosphates
    • C08B5/14—Cellulose sulfate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Un additivo per composizioni cementizie comprende almeno un polisaccaride solfatato ottenuto mediante solfatazione dei polisaccaride, preferibilmente in condizioni moderate. Lo additivo migliora la fluidità e la lavorabilità dei miscugli cementizi ed impartisce una superiore resistenza alla compressione finale.
ITRM940126A 1993-03-10 1994-03-09 Additivo per composizioni cementizie. IT1271877B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8771793 1993-03-10

Publications (3)

Publication Number Publication Date
ITRM940126A0 ITRM940126A0 (it) 1994-03-09
ITRM940126A1 ITRM940126A1 (it) 1995-09-09
IT1271877B true IT1271877B (it) 1997-06-09

Family

ID=13922663

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM940126A IT1271877B (it) 1993-03-10 1994-03-09 Additivo per composizioni cementizie.

Country Status (5)

Country Link
JP (1) JP3297190B2 (it)
CH (1) CH687077A5 (it)
DE (1) DE4407499A1 (it)
FR (1) FR2702473B1 (it)
IT (1) IT1271877B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1044466C (zh) * 1995-05-10 1999-08-04 中国科学院广州化学研究所 一种纤维素硫酸酯型混凝土外加剂
DE19543304B4 (de) * 1995-11-21 2005-06-09 Skw Bauchemie Gmbh Zusatzmittel für wasserhaltige Baustoffmischungen und dessen Verwendung
WO1997027153A1 (en) * 1996-01-26 1997-07-31 The Nutrasweet Company Sulfate elevation in anionic polysaccharide-containing cementitious formulations for enhanced cement performance
IT1291309B1 (it) * 1997-05-06 1999-01-07 F B C Future Biolog Chemicals Fluidificanti cementizi a base di amidi solfati
DE10209812A1 (de) 2001-03-22 2002-09-26 Degussa Construction Chem Gmbh Verwendung von wasserlöslichen Polysaccharid-Derivaten als Dispergiermittel für mineralische Bindemittelsuspensionen
FR2865350B1 (fr) * 2004-01-27 2006-05-26 Goemar Lab Sa Agent et procede pour la stimulation des defenses naturelles des plantes
WO2010008093A1 (ja) 2008-07-18 2010-01-21 花王株式会社 水硬性組成物用早強剤
BRPI0913899A2 (pt) * 2008-07-18 2015-10-27 Kao Corp métodos para produzir um pó hidráulico, e pó hidráulico
CN101974091B (zh) * 2010-09-28 2012-07-04 新疆大学 利用制浆黑液中沉淀的废弃纤维素制备混凝土减水剂的新方法
DE102013204817B4 (de) * 2013-03-19 2017-08-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung von sulfatierten Celluloseethern sowie deren Verwendung zur Herstellung von Mikrokapseln

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951674A (en) * 1974-12-17 1976-04-20 The Procter & Gamble Company Concrete additive
US4093798A (en) * 1976-12-06 1978-06-06 National Starch And Chemical Corporation Method for preparing starch sulfate esters
JPS59138201A (ja) * 1983-01-27 1984-08-08 Rikagaku Kenkyusho 新規な硫酸化アミノ多糖及びその製造法
JPS6121949A (ja) * 1984-07-06 1986-01-30 太平洋セメント株式会社 水中打設セメント組成物用混和剤
JPS6172664A (ja) * 1984-09-17 1986-04-14 第一工業製薬株式会社 水中コンクリ−ト用混和剤
JPS6230649A (ja) * 1985-08-02 1987-02-09 第一工業製薬株式会社 セメントスラリ−用添加剤
JPH0725802B2 (ja) * 1988-11-28 1995-03-22 味の素株式会社 カードランまたはレンチナンの硫酸エステルまたはその塩の製造方法
DE69003228T2 (de) * 1989-12-12 1994-02-03 Taisei Corp Hydraulische Zusammensetzung, daraus geformte Produkte und Mittel zur Herabsetzung von Entmischung für hydraulische Substanzen.
JP2733580B2 (ja) * 1990-07-30 1998-03-30 株式会社ジーシー 歯科用アルミン酸セメント硬化液
DE4024968A1 (de) * 1990-08-07 1992-07-09 Wolff Walsrode Ag Dihydroxypropylsulfoethylcellulosen, ihre herstellung und verwendung
JP2839770B2 (ja) * 1991-09-24 1998-12-16 信越化学工業株式会社 充填性と流動性に優れたコンクリート組成物
JP2839771B2 (ja) * 1991-09-25 1998-12-16 信越化学工業株式会社 充填性と流動性に優れたコンクリート組成物

Also Published As

Publication number Publication date
JPH0710624A (ja) 1995-01-13
FR2702473B1 (fr) 1995-08-18
DE4407499A1 (de) 1994-09-15
ITRM940126A1 (it) 1995-09-09
CH687077A5 (de) 1996-09-13
ITRM940126A0 (it) 1994-03-09
JP3297190B2 (ja) 2002-07-02
FR2702473A1 (fr) 1994-09-16

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970228