JP2007270072A5 - - Google Patents

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JP2007270072A5
JP2007270072A5 JP2006100509A JP2006100509A JP2007270072A5 JP 2007270072 A5 JP2007270072 A5 JP 2007270072A5 JP 2006100509 A JP2006100509 A JP 2006100509A JP 2006100509 A JP2006100509 A JP 2006100509A JP 2007270072 A5 JP2007270072 A5 JP 2007270072A5
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polycarboxylic acid
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光散乱検出器によって測定される分子量分布についてピーク面積が最大となる主要なピークとそれよりも高分子量側のピークとを有するポリカルボン酸系重合体であって、
該ポリカルボン酸系重合体は、高分子量側のピーク面積が、主要なピーク面積に対して２〜４０％である重合体であり、かつ、下記化学式（１）：
Figure 2007270072
 （式中、Ｒ １ 、Ｒ ２ 及びＲ ３ は、同一又は異なって、水素原子又はメチル基、−（ＣＨ ２ ）ｚＣＯＯＭ ２ （−（ＣＨ ２ ）ｚＣＯＯＭ ２ は、−ＣＯＯＭ １ 又はその他の−（ＣＨ ２ ）ｚＣＯＯＭ ２ と無水物を形成していてもよい）を表し、Ｚは、０〜２の整数を表し、Ｍ １ 及びＭ ２ は、同一又は異なって、水素原子、アルカリ金属原子、アルカリ土類原子、アンモニウム基又は有機アミン基を表す。）で表されるカルボキシル基由来の構成単位（Ｉ）と、下記化学式（２）：
Figure 2007270072
 （式中、Ｒ ４ 及びＲ ５ は、同一又は異なって、水素原子又はメチル基を表し、ＡＯは、同一又は異なって、炭素数２以上のオキシアルキレン基の１種又は２種以上の混合物（２種以上の場合はブロック状に付加していてもランダム状に付加していてもよい）を表し、ｘは０〜２の整数を表し、ｙは１であり、ｎはオキシアルキレン基の平均付加モル数を表し、１〜３００の数であり、Ｒ ６ は水素原子又は炭素数１〜２０の炭化水素基を表す。）で表されるポリオキシアルキレン鎖由来の構成単位（ＩＩ）とを含むものであって、
該構成単位（Ｉ）及び構成単位（ＩＩ）の含有量は、該重合体中、それぞれ２〜９０質量％及び２〜９８質量％であることを特徴とするポリカルボン酸系重合体。 A polycarboxylic acid-based polymer having a main peak with a maximum peak area and a peak on the higher molecular weight side with respect to the molecular weight distribution measured by a light scattering detector,
The polycarboxylic acid-based polymer, the peak area of the high molecular weight side is 2-40% der Ru polymer against major peak area, and the following chemical formula (1):
Figure 2007270072
 (Wherein R 1 , R 2 and R 3 are the same or different and are a hydrogen atom or a methyl group, — (CH 2 ) zCOOM 2 (— (CH 2 ) zCOOM 2 is —COOM 1 or other — ( CH 2) zCOOM 2 and may form an anhydride) represents, Z is an integer of 0 to 2, M 1 and M 2 are the same or different and each represents a hydrogen atom, an alkali metal atom, alkaline A structural unit (I) derived from a carboxyl group represented by an earth atom, an ammonium group or an organic amine group) and the following chemical formula (2):
Figure 2007270072
 (In the formula, R 4 and R 5 are the same or different and each represents a hydrogen atom or a methyl group, and AO is the same or different, and one or a mixture of two or more oxyalkylene groups having 2 or more carbon atoms ( 2 or more may be added in a block form or in a random form), x represents an integer of 0 to 2, y is 1, and n is an average of oxyalkylene groups The number of moles added is a number from 1 to 300, and R 6 represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.) The structural unit (II) derived from a polyoxyalkylene chain represented by Including
Content of this structural unit (I) and structural unit (II) is 2-90 mass% and 2-98 mass% in this polymer, respectively, The polycarboxylic acid type polymer characterized by the above-mentioned. 前記高分子量側のピーク面積は、前記主要なピーク面積に対して５〜３５％であることを特徴とする請求項１記載のポリカルボン酸系重合体。 The polycarboxylic acid polymer according to claim 1, wherein the peak area on the high molecular weight side is 5 to 35% with respect to the main peak area. 前記高分子量側のピーク面積は、重量平均分子量が１００万〜１０００万であるポリカルボン酸系重合体に由来するものであることを特徴とする請求項１又は２記載のポリカルボン酸系重合体。 3. The polycarboxylic acid polymer according to claim 1, wherein the peak area on the high molecular weight side is derived from a polycarboxylic acid polymer having a weight average molecular weight of 1,000,000 to 10,000,000. . 請求項１〜３のいずれかに記載のポリカルボン酸系重合体を製造する方法であって、
該製造方法は、下記化学式（３）：
Figure 2007270072
 （式中、Ｒ １ 、Ｒ ２ 及びＲ ３ は、同一又は異なって、水素原子又はメチル基、−（ＣＨ ２ ）ｚＣＯＯＭ ２ （−（ＣＨ ２ ）ｚＣＯＯＭ ２ は、−ＣＯＯＭ １ 又はその他の−（ＣＨ ２ ）ｚＣＯＯＭ ２ と無水物を形成していてもよい）を表し、Ｚは、０〜２の整数を表し、Ｍ １ 及びＭ ２ は、同一又は異なって、水素原子、アルカリ金属原子、アルカリ土類原子、アンモニウム基又は有機アミン基、炭素数３〜１８の炭化水素基を持つシリル基を表す。）で示される単量体を含む不飽和単量体成分（Ｉ−Ｍ）と、下記化学式（４）：
Figure 2007270072
 （式中、Ｒ ４ 及びＲ ５ は、同一又は異なって、水素原子又はメチル基を表し、ＡＯは、同一又は異なって、炭素数２以上のオキシアルキレン基の１種又は２種以上の混合物（２種以上の場合はブロック状に付加していてもランダム状に付加していてもよい）を表し、ｘは０〜２の整数を表し、ｙは１であり、ｎはオキシアルキレン基の平均付加モル数を表し、１〜３００の数であり、Ｒ ６ は水素原子又は炭素数１〜２０の炭化水素基を表す。）で示される単量体を含む不飽和単量体成分（ＩＩ−Ｍ）と、該不飽和単量体成分（Ｉ−Ｍ）及び／又は（ＩＩ−Ｍ）と共重合可能な不飽和単量体（ＩＩＩ−Ｍ）とを、重合する工程を含み、
該単量体成分の使用割合は、不飽和単量体成分（Ｉ−Ｍ）／不飽和単量体成分（ＩＩ−Ｍ）／不飽和単量体（ＩＩＩ−Ｍ）＝２〜９０質量％／２〜９８質量％／０〜５０質量％であることを特徴とするポリカルボン酸系重合体の製造方法。 A method for producing the polycarboxylic acid polymer according to any one of claims 1 to 3 ,
The production method has the following chemical formula (3):
Figure 2007270072
 (Wherein R 1 , R 2 and R 3 are the same or different and are a hydrogen atom or a methyl group, — (CH 2 ) zCOOM 2 (— (CH 2 ) zCOOM 2 is —COOM 1 or other — ( CH 2) zCOOM 2 and may form an anhydride) represents, Z is an integer of 0 to 2, M 1 and M 2 are the same or different and each represents a hydrogen atom, an alkali metal atom, alkaline An unsaturated monomer component (IM) including a monomer represented by an earth atom, an ammonium group or an organic amine group, and a silyl group having a hydrocarbon group having 3 to 18 carbon atoms; Chemical formula (4):
Figure 2007270072
 (In the formula, R 4 and R 5 are the same or different and each represents a hydrogen atom or a methyl group, and AO is the same or different, and one or a mixture of two or more oxyalkylene groups having 2 or more carbon atoms ( 2 or more may be added in a block form or in a random form), x represents an integer of 0 to 2, y is 1, and n is an average of oxyalkylene groups Represents an added mole number, is a number of 1 to 300, and R 6 represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.) M) and an unsaturated monomer (III-M) copolymerizable with the unsaturated monomer component (IM) and / or (II-M),
The proportion of the monomer component used is unsaturated monomer component (IM) / unsaturated monomer component (II-M) / unsaturated monomer (III-M) = 2 to 90% by mass. The manufacturing method of the polycarboxylic acid type | system | group polymer characterized by being / 2-98 mass% / 0-50 mass% . 前記製造方法は、不飽和カルボン酸と（アルコキシ）ポリアルキレングリコールとのエステル化工程で生成した混合物をそのまま単量体成分として前記重合工程に使用することを特徴とする請求項４に記載のポリカルボン酸系重合体の製造方法。5. The method according to claim 4, wherein the production method uses the mixture produced in the esterification step of an unsaturated carboxylic acid and an (alkoxy) polyalkylene glycol as the monomer component as it is in the polymerization step. A method for producing a carboxylic acid polymer. 請求項１〜４のいずれかに記載のポリカルボン酸系重合体を含むことを特徴とするセメント混和剤。 A cement admixture comprising the polycarboxylic acid polymer according to claim 1.
JP2006100509A 2006-03-31 2006-03-31 Polycarboxylic acid polymer, method for producing the same, and cement admixture Active JP4859507B2 (en)

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JP2007270072A5 true JP2007270072A5 (en) 2009-02-12
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JP5249366B2 (en) * 2011-01-26 2013-07-31 住友化学株式会社 Continuous polymerization apparatus and method for producing polymer composition
JP5431376B2 (en) * 2011-01-26 2014-03-05 住友化学株式会社 Continuous polymerization apparatus and method for producing polymer composition
JP6263403B2 (en) * 2014-02-05 2018-01-17 株式会社竹中工務店 Method for preparing high-strength concrete
JP6986258B2 (en) * 2017-11-02 2021-12-22 竹本油脂株式会社 Grout composition
JP6918330B1 (en) * 2021-01-27 2021-08-11 竹本油脂株式会社 Additives for hydraulic compositions and hydraulic compositions

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JP3179022B2 (en) * 1995-07-13 2001-06-25 株式会社エヌエムビー Cement dispersant, method for producing the same, and cement composition using the same
JP3884548B2 (en) * 1996-12-26 2007-02-21 株式会社日本触媒 Cement dispersant, method for producing polycarboxylic acid for cement dispersant, and cement composition
JP3418580B2 (en) * 1999-04-06 2003-06-23 株式会社日本触媒 Method and apparatus for producing esterified product
DE10125238A1 (en) * 2001-05-22 2002-11-28 Basf Ag Water-soluble polymers of esters from acrylic acid, methacrylic acid and alkyl polyalkylene glycols
JP4666344B2 (en) * 2003-11-05 2011-04-06 株式会社日本触媒 Cement admixture

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