IT1249726B - Composizione polimerica atta a ridurre la perdita di scorrevolezza di una composizione cementizia. - Google Patents

Composizione polimerica atta a ridurre la perdita di scorrevolezza di una composizione cementizia.

Info

Publication number
IT1249726B
IT1249726B ITRM910835A ITRM910835A IT1249726B IT 1249726 B IT1249726 B IT 1249726B IT RM910835 A ITRM910835 A IT RM910835A IT RM910835 A ITRM910835 A IT RM910835A IT 1249726 B IT1249726 B IT 1249726B
Authority
IT
Italy
Prior art keywords
polymer
loss
sliding
salt
reduce
Prior art date
Application number
ITRM910835A
Other languages
English (en)
Inventor
Hideo Ogawa
Yoshio Tanaka
Tadashi Tsuchitani
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
Priority claimed from JP2298960A external-priority patent/JP2741630B2/ja
Priority claimed from JP2298961A external-priority patent/JP2741631B2/ja
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of ITRM910835A0 publication Critical patent/ITRM910835A0/it
Publication of ITRM910835A1 publication Critical patent/ITRM910835A1/it
Application granted granted Critical
Publication of IT1249726B publication Critical patent/IT1249726B/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
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2664—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers
    • C04B24/267—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers containing polyether side chains
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
    • C08F216/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
    • C08F216/14—Monomers containing only one unsaturated aliphatic radical
    • C08F216/1416—Monomers containing oxygen in addition to the ether oxygen, e.g. allyl glycidyl ether
    • C08F216/1425—Monomers containing side chains of polyether groups
    • C08F216/1433—Monomers containing side chains of polyethylene oxide groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
    • C08F222/10—Esters
    • C08F222/12—Esters of phenols or saturated alcohols
    • C08F222/20—Esters containing oxygen in addition to the carboxy oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L35/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L35/08—Copolymers with vinyl ethers
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/308—Slump-loss preventing agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

Una composizione polimerica che riduce la perdita di scorrevolezza di una composizione cementizia comprende almeno un polimero sotto forma di un suo sale, avente la forma di un copolimero di:(a) un emiestere di anidride maleica con un composto della formula I:RO (AO)mH (I)in cui R é un gruppo C1-20- alchilico, A è un gruppo C2-4- alchilenico e m è un numero intero da 2 a 16;e (b) un monomero avente la formula II:CH2 = CHCH2-(OA)n OR (II)in cui n è un numero intero che va da 1 a 90.In una forma di realizzazione preferita è presente un sale policarbossilato che è almeno un polimero o copolimero comprendente almeno uno dei monomeri: acido acrilico, acido metacrilico, anidride maleica, acido maleico e monoestere di acido maleico, il polimero e il sale policarbossilato essendo miscelati nella proporzione di 0,1-10 parti in peso di polimero per parte di sale policarbossilato.Composizioni cementizie come ad esempio calcestruzzo in cui dette composizioni polimeriche sono incluse, mantengono le loro proprietà di assettamento.
ITRM910835A 1990-11-06 1991-11-06 Composizione polimerica atta a ridurre la perdita di scorrevolezza di una composizione cementizia. IT1249726B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2298960A JP2741630B2 (ja) 1990-11-06 1990-11-06 セメント組成物の流動性低下防止剤
JP2298961A JP2741631B2 (ja) 1990-11-06 1990-11-06 流動性低下防止型セメント分散剤

Publications (3)

Publication Number Publication Date
ITRM910835A0 ITRM910835A0 (it) 1991-11-06
ITRM910835A1 ITRM910835A1 (it) 1993-05-06
IT1249726B true IT1249726B (it) 1995-03-09

Family

ID=26561731

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910835A IT1249726B (it) 1990-11-06 1991-11-06 Composizione polimerica atta a ridurre la perdita di scorrevolezza di una composizione cementizia.

Country Status (7)

Country Link
US (1) US5162402A (it)
CA (1) CA2054950C (it)
CH (1) CH683258A5 (it)
DE (1) DE4135956C2 (it)
FR (1) FR2668773B1 (it)
GB (1) GB2255096B (it)
IT (1) IT1249726B (it)

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Also Published As

Publication number Publication date
CA2054950A1 (en) 1992-05-07
DE4135956C2 (de) 2001-10-18
GB9123349D0 (en) 1991-12-18
ITRM910835A0 (it) 1991-11-06
FR2668773A1 (fr) 1992-05-07
FR2668773B1 (fr) 1995-03-10
ITRM910835A1 (it) 1993-05-06
GB2255096A (en) 1992-10-28
CH683258A5 (de) 1994-02-15
US5162402A (en) 1992-11-10
GB2255096B (en) 1994-03-23
DE4135956A1 (de) 1992-05-07
CA2054950C (en) 2003-05-06

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