JPS62221433A - Dispersant for calcium carbonate - Google Patents
Dispersant for calcium carbonateInfo
- Publication number
- JPS62221433A JPS62221433A JP61065455A JP6545586A JPS62221433A JP S62221433 A JPS62221433 A JP S62221433A JP 61065455 A JP61065455 A JP 61065455A JP 6545586 A JP6545586 A JP 6545586A JP S62221433 A JPS62221433 A JP S62221433A
- Authority
- JP
- Japan
- Prior art keywords
- calcium carbonate
- dispersant
- copolymer
- acrylic acid
- meth
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 75
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 35
- 239000002270 dispersing agent Substances 0.000 title claims abstract description 21
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 13
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical group SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 claims description 6
- 125000003158 alcohol group Chemical group 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical group CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000049 pigment Substances 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 abstract description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 abstract description 2
- 239000003505 polymerization initiator Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 241000276489 Merlangius merlangus Species 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 abstract 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 12
- 238000001238 wet grinding Methods 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- -1 alkali metal salt Chemical class 0.000 description 4
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- AEUVIXACNOXTBX-UHFFFAOYSA-N 1-sulfanylpropan-1-ol Chemical compound CCC(O)S AEUVIXACNOXTBX-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- SUVIGLJNEAMWEG-UHFFFAOYSA-N propane-1-thiol Chemical group CCCS SUVIGLJNEAMWEG-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- RVEZZJVBDQCTEF-UHFFFAOYSA-N sulfenic acid Chemical group SO RVEZZJVBDQCTEF-UHFFFAOYSA-N 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 150000003566 thiocarboxylic acids Chemical group 0.000 description 1
- NJRXVEJTAYWCQJ-UHFFFAOYSA-N thiomalic acid Chemical compound OC(=O)CC(S)C(O)=O NJRXVEJTAYWCQJ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は（メタ）アクリル酸と（メタ）アクリロニトリ
ルの共重合体から成る炭酸カルシウム用分散剤に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dispersant for calcium carbonate comprising a copolymer of (meth)acrylic acid and (meth)acrylonitrile.
炭酸カルシウムの水性媒体中における使用、例えば塗被
加工紙、水系塗料などにおいては、炭酸カルシウム粒子
の分散性が優れている事が強く要求される。例えば塗被
加工紙の製造の場合、炭酸カルシウム粒子の分散性が悪
いと良好な塗布がされに＜＜、種々のトラブルが発生す
る。又、加工紙をコーテイング後に乾燥させるため、出
来るだけ水含量の少ない高濃度の顔料スラリーが望まれ
る。When calcium carbonate is used in an aqueous medium, for example in coated paper, water-based paints, etc., it is strongly required that the calcium carbonate particles have excellent dispersibility. For example, in the production of coated processed paper, poor dispersibility of calcium carbonate particles prevents good coating and causes various troubles. Furthermore, since the processed paper is dried after being coated, a highly concentrated pigment slurry with as little water content as possible is desired.
炭酸カルシウムには大別して、例えば生石灰に水を加え
て石灰乳とし、これに炭酸ガスを反応させて得られる沈
降炭酸カルシウムと、天然の炭酸カルシウムを粉砕する
事により製造される重質炭酸カルシウムとがある。近年
、特に重質炭酸カルシウムを水性媒体中で各種粉砕機に
より微細に粉砕した湿式微粒子炭酸カルシウムが多量に
使用されるようになった。湿式粉砕微粒子炭酸カルシウ
ムはその粒度により各種のものが製造されており、粒径
２μ以下のものを７５％以上含有する各種の炭酸カルシ
ウム・スラリーを入手する事ができる。これに関連して
湿式粉砕時にスラリー粘度を下げて効率よく粉砕を行う
ための湿式粉砕助剤が研究され、現在では該助剤として
主にポリアクリル酸あるいはそれらの塩が使用されてい
る。しかしながら、これら助剤は、十分な流動性を持つ
スラリーとするためには多量に添加されねばならず、且
つスラリーを長時間に渡って安定な状態に保つことは出
来ない。Calcium carbonate can be roughly divided into precipitated calcium carbonate, which is obtained by adding water to quicklime to make lime milk, and reacting this with carbon dioxide gas, and heavy calcium carbonate, which is produced by crushing natural calcium carbonate. There is. In recent years, particularly wet fine particle calcium carbonate, which is obtained by finely pulverizing heavy calcium carbonate in an aqueous medium using various types of pulverizers, has come into use in large quantities. Wet-pulverized fine-particle calcium carbonate is produced in various types depending on its particle size, and various calcium carbonate slurries containing 75% or more of particles with a particle size of 2 μm or less are available. In connection with this, research has been conducted into wet grinding aids for reducing slurry viscosity during wet grinding for efficient grinding, and currently polyacrylic acid or salts thereof are mainly used as such aids. However, these auxiliary agents must be added in large amounts to obtain a slurry with sufficient fluidity, and the slurry cannot be kept stable for a long period of time.
本発明者らは、重質炭酸カルシウム及び沈降炭酸カルシ
ウムの分散剤、特に炭酸カルシウムの湿式粉砕助剤の現
状に鑑み鋭意研究した結果、（メタ）アクリル酸と（メ
タ）アクリロニトリルを構成成分として、ある特定範囲
の構成モル比と平均分子量を有する共重合体が炭酸カル
シウム用分散剤として、特に炭酸カルシウムの湿式粉砕
の助剤として有効である事を見出し、本発明を完成する
に到った。The present inventors have conducted extensive research in view of the current state of dispersants for heavy calcium carbonate and precipitated calcium carbonate, especially wet grinding aids for calcium carbonate, and have found that (meth)acrylic acid and (meth)acrylonitrile are used as constituent components. The present inventors have discovered that a copolymer having a specific molar ratio and average molecular weight is effective as a dispersant for calcium carbonate, particularly as an aid for wet grinding of calcium carbonate, and has completed the present invention.
即ち、本発明は、一般式（Ｉ）
％式％（）
で表され、且つ平均分子量が５００乃至３０，０００で
ある共重合体からなる炭酸カルシウム用分散剤を提供す
るものである。That is, the present invention provides a dispersant for calcium carbonate comprising a copolymer represented by the general formula (I) % formula % ( ) and having an average molecular weight of 500 to 30,000.
本発明の炭酸カルシウム用分散剤は、
−（−Ｃ１１，−Ｃ→−で表される（メタ）アクリロニ
ドＮ
リル単位と、＋ＣＨ２−Ｃ＋−で表される（メタ）ＯＯ
Ｍ
アクリル酸単位とからなる繰り返し構造単位より構成さ
れるが、これらの構成モル比は重要であり、−Ｍ式（Ｉ
）中のｎと麟のモル比はｎ／ｍ＝２／９８〜５０１５０
、好ましくは１０／９０〜４０／６０の範囲でなけれ
ば本発明分散剤の性能を満足する事は出来ない。The dispersant for calcium carbonate of the present invention has a (meth)acrylonide N lyl unit represented by -(-C11, -C→-) and a (meth)OO represented by +CH2-C+-.
M is composed of repeating structural units consisting of acrylic acid units, but the molar ratio of these is important, and -M formula (I
), the molar ratio of n and Rin is n/m=2/98~50150
, preferably in the range of 10/90 to 40/60, the performance of the dispersant of the present invention cannot be satisfied.
又、一般式（Ｉ）においてＲは炭素数１〜４の低級アル
コール残基、炭素数１〜４のメルカプタン残基又は水素
を表すが、Ｒの炭素数がこれ以上大きくなると、性能が
低下するとともに、発泡などを生じ分散剤として満足出
来る性能を有しない。Further, in the general formula (I), R represents a lower alcohol residue having 1 to 4 carbon atoms, a mercaptan residue having 1 to 4 carbon atoms, or hydrogen, but if the number of carbon atoms in R becomes larger than this, the performance will decrease. At the same time, it causes foaming, etc., and does not have satisfactory performance as a dispersant.
炭素数１〜４の低級アルコール残基としては、メタノー
ル、エタノール１、プロパツール、イソプロパツール、
ブタノール、５ｅｃ−ブタノール、イソブタノール等の
残基を挙げることができ、炭素数１〜４のメルカプタン
残基としては、メルカプトエタノール、メルカプトプロ
パツール等のヒドロキシメルカプタン残基、エチルメル
カプタン、ブチルメルカプタン、プロピルメルカプタン
等の炭素数１〜４のアルキルメルカプタン残基、チオグ
リコール酸、チオリンゴ酸等のチオカルボン酸残基を挙
げる事ができる。Examples of lower alcohol residues having 1 to 4 carbon atoms include methanol, ethanol 1, propatool, isoproptool,
Examples of mercaptan residues having 1 to 4 carbon atoms include hydroxymercaptan residues such as mercaptoethanol and mercaptopropanol, ethyl mercaptan, butyl mercaptan, and propyl mercaptan residues. Examples include alkyl mercaptan residues having 1 to 4 carbon atoms such as mercaptan, and thiocarboxylic acid residues such as thioglycolic acid and thiomalic acid.
本発明の炭酸カルシウム用分散剤の製造方法は特に限定
はされないが、好ましい合成法としては、炭素数１〜４
の低級アルコール中で（メタ）アクリロニトリルと（メ
タ）アクリル酸を過硫酸塩の如き重合開始剤を用いて共
重合せしめ、溶媒を除去した後、必要によりアルカリ金
属塩等で中和することにより、Ｐが炭素数１〜４のアル
コール残基である共重合体を得ることが出来るし、又、
低級アルコール／水系へ上記モノマーと炭素数１〜４の
メルカプタンを開始剤と共に滴下させる事によりＲが炭
素数１〜４のメルカプタン残基である共重合体を得るこ
とが出来る。The method for producing the dispersant for calcium carbonate of the present invention is not particularly limited, but a preferred synthesis method includes carbon atoms of 1 to 4 carbon atoms.
By copolymerizing (meth)acrylonitrile and (meth)acrylic acid in a lower alcohol using a polymerization initiator such as a persulfate, removing the solvent, and neutralizing with an alkali metal salt etc. if necessary, A copolymer in which P is an alcohol residue having 1 to 4 carbon atoms can be obtained, and
A copolymer in which R is a mercaptan residue having 1 to 4 carbon atoms can be obtained by dropping the above monomer and a mercaptan having 1 to 4 carbon atoms together with an initiator into a lower alcohol/water system.
本発明の共重合体においては、アクリル酸エステル、ス
チレン、酢酸ビニル、スルホン酸含有モノマー、アクリ
ルアミド等の重合可能なモノマーを本発明の共重合体の
効果を阻害しない範囲で共重合させてもよい。In the copolymer of the present invention, polymerizable monomers such as acrylic esters, styrene, vinyl acetate, sulfonic acid-containing monomers, acrylamide, etc. may be copolymerized within a range that does not impede the effects of the copolymer of the present invention. .
本発明の炭酸カルシウム用分散剤は、ナトリウム、カリ
ウム等のアルカリ金属塩、あるいはアンモニウム塩であ
ることが好ましいが、一部アルカリ土類金属塩としても
よく、又、一部未中和部分を有していてもよい。The dispersant for calcium carbonate of the present invention is preferably an alkali metal salt such as sodium or potassium salt, or an ammonium salt, but it may also be partially an alkaline earth metal salt, or may have a partially unneutralized portion. You may do so.
本発明の炭酸カルシウム用分散剤は、特に０．０２〜５
μの粒径の沈降炭酸カルシウム、３μ〜１０μの重質炭
酸カルシウムに対して有効であるが、重質炭酸カルシウ
ムの湿式粉砕における炭酸カルシウム粒子の粉砕及び分
散、炭酸カルシウムスラリーの安定化にも顕著な効果を
有するものである。The dispersant for calcium carbonate of the present invention is particularly suitable for 0.02 to 5
It is effective for precipitated calcium carbonate with a particle size of μ, and heavy calcium carbonate with a particle size of 3μ to 10μ, but it is also effective for crushing and dispersing calcium carbonate particles in wet grinding of heavy calcium carbonate, and for stabilizing calcium carbonate slurry. It has a great effect.
本発明の分散剤は、その他、カオリン、クレー、酸化チ
タン、ベンガラ、亜鉛華、水酸化アルミニウム、サチン
ホワイト、その他の顔料の分散剤、及びこれらの粉末の
湿式粉砕助剤としても優れた効果を示す。The dispersant of the present invention also has excellent effects as a dispersant for kaolin, clay, titanium oxide, red iron oxide, zinc white, aluminum hydroxide, satin white, and other pigments, and as a wet grinding aid for these powders. show.
以下、本発明を実施例により具体的に説明するが、本発
明はこれらの実施例に限定されるものではない。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples.
実施例１
市販重質炭酸カルシウム（三共精粉ａ＠製のニスカロン
１００）を表１に示す分散剤を含有する水溶液に添加し
、オートホモミキサー（特殊機化工業■製）にて３００
０ ｒｐｍで１０分間攪拌を行い固型分濃度７５重量％
の炭酸カルシウム水スラリーを得た。次いで、このスラ
リーをポット容量５０〇−のサンドミル（五十嵐機械■
製）を用いて、スラリー／サンドの容量比１．０１０．
８で２時間３０分湿式粉砕を行った。なお、ここで使用
したサンドはオッタワサンド（五十嵐機械側製）である
。Example 1 Commercially available heavy calcium carbonate (Niscallon 100 manufactured by Sankyo Seifun a@) was added to an aqueous solution containing the dispersant shown in Table 1, and the mixture was mixed with an autohomogenizer (manufactured by Tokushu Kika Kogyo ■) at 300 ml.
Stir at 0 rpm for 10 minutes until the solid content concentration is 75% by weight.
A calcium carbonate water slurry was obtained. Next, this slurry was milled in a sand mill (Igarashi Kikai ■) with a pot capacity of 500.
using a slurry/sand volume ratio of 1.010.
Wet pulverization was carried out at No. 8 for 2 hours and 30 minutes. The sand used here was Ottawa Sand (manufactured by Igarashi Kikai).
粉砕後、サンドとスラリーを１００メツシユ金網により
濾別し、固型分濃度７５重量％の湿式粉砕炭酸カルシウ
ム・スラリーを得た。該スラリーにつき、スラリー粘度
及び炭酸カルシウムの粒度の測定を行った。After pulverization, the sand and slurry were filtered through a 100-mesh wire mesh to obtain a wet-pulverized calcium carbonate slurry with a solids concentration of 75% by weight. Regarding the slurry, the slurry viscosity and the particle size of calcium carbonate were measured.
粘度はブルックフィールド型粘度計を用いて２５℃で測
定し、粒度は遠心式自動粒度分布測定装置（＠堀場製作
所製）を用いて測定した。これらの結果を表−２に示す
。The viscosity was measured at 25° C. using a Brookfield viscometer, and the particle size was measured using a centrifugal automatic particle size distribution analyzer (manufactured by Horiba, Ltd.). These results are shown in Table-2.
表 −１
表 −２
表−２つづき
由
傘１：分散剤の欄の番号は表−１の分散剤と同じである
。Table 1 Table 2 Table 2 continued Yugasa 1: The numbers in the dispersant column are the same as the dispersants in Table 1.
＊２；炭酸カルシウムに対する重量％である。*2; Weight % based on calcium carbonate.
＊３：粒径２μ以下の炭酸カルシウムの全炭酸カルシウ
ムに対する重量％である。*3: Weight % of calcium carbonate with a particle size of 2μ or less based on the total calcium carbonate.
傘４：分散剤１０では炭酸カルシウムの粉砕がほとんど
進行せず湿式粉砕用分散剤としては使用出来ない。Umbrella 4: With dispersant 10, pulverization of calcium carbonate hardly progresses and it cannot be used as a dispersant for wet pulverization.
実施例２
沈降性炭酸カルシウム（商品名白艶華ｐｚ、白石工業■
製）を表１の分散剤を含有する水溶液に添加し、オート
ホモミキサー（特殊機化工業■製）にて３０００ ｒｐ
ｍで１０分間攪拌を行い、固型分濃度６０％の炭酸カル
シウム水スラリーを得た。Example 2 Precipitated calcium carbonate (product name Hakuenka pz, Shiraishi Kogyo ■
(manufactured by Tokushu Kika Kogyo ■) was added to an aqueous solution containing the dispersant shown in Table 1, and the mixture was heated at 3000 rp using an autohomo mixer (manufactured by Tokushu Kika Kogyo ■).
Stirring was performed for 10 minutes at m, to obtain a calcium carbonate aqueous slurry with a solid content concentration of 60%.
得られたスラリーの見掛は粘度をＢ型粘度計により測定
した。その結果を表−３に示す。The apparent viscosity of the obtained slurry was measured using a B-type viscometer. The results are shown in Table-3.
表−３ 表−３つづきTable-3 Table-3 continued
Claims (1)
の低級アルコール残基、炭素数 １〜４のメルカプタン残基、又は水素を表 し、Ｍは水素、一価金属、二価金属、又は アンモニウム基を表す。ｎとｍは重合のモ ル比を表し、ｎ／ｍ＝２／９８〜５０／５０である。〕
で表され、且つ平均分子量が５００乃至３０，０００で
ある共重合体からなる炭酸カルシウム用分散剤。[Claims] General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) [In the formula, X represents hydrogen or a methyl group, and R has 1 to 4 carbon atoms.
represents a lower alcohol residue, a mercaptan residue having 1 to 4 carbon atoms, or hydrogen, and M represents hydrogen, a monovalent metal, a divalent metal, or an ammonium group. n and m represent the molar ratio of polymerization, and n/m=2/98 to 50/50. ]
A dispersant for calcium carbonate comprising a copolymer represented by the formula and having an average molecular weight of 500 to 30,000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61065455A JPS62221433A (en) | 1986-03-24 | 1986-03-24 | Dispersant for calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61065455A JPS62221433A (en) | 1986-03-24 | 1986-03-24 | Dispersant for calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62221433A true JPS62221433A (en) | 1987-09-29 |
Family
ID=13287627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61065455A Pending JPS62221433A (en) | 1986-03-24 | 1986-03-24 | Dispersant for calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62221433A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4814079B2 (en) * | 2003-03-14 | 2011-11-09 | ビーエーエスエフ ソシエタス・ヨーロピア | Use of polyacrylic acid as grinding aid for calcium carbonate |
| CN104474967A (en) * | 2014-12-04 | 2015-04-01 | 江苏苏博特新材料股份有限公司 | Dispersant, preparation method of dispersant and application of dispersant in dispersion of nano calcium carbonate |
| JP2016065142A (en) * | 2014-09-25 | 2016-04-28 | 第一工業製薬株式会社 | Dispersant for carbon material |
| JP2020163362A (en) * | 2019-03-29 | 2020-10-08 | 東洋インキＳｃホールディングス株式会社 | Dispersion agent, dispersion body, electrode and resin composition |
| WO2020203714A1 (en) * | 2019-03-29 | 2020-10-08 | 東洋インキＳｃホールディングス株式会社 | Dispersant, dispersed material, resin composition, mixture slurry, electrode film, and non-aqueous electrolyte secondary battery |
| WO2022131164A1 (en) * | 2020-12-14 | 2022-06-23 | 東洋インキＳｃホールディングス株式会社 | Conductive material dispersion and use of conductive material dispersion |
-
1986
- 1986-03-24 JP JP61065455A patent/JPS62221433A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4814079B2 (en) * | 2003-03-14 | 2011-11-09 | ビーエーエスエフ ソシエタス・ヨーロピア | Use of polyacrylic acid as grinding aid for calcium carbonate |
| JP2016065142A (en) * | 2014-09-25 | 2016-04-28 | 第一工業製薬株式会社 | Dispersant for carbon material |
| CN104474967A (en) * | 2014-12-04 | 2015-04-01 | 江苏苏博特新材料股份有限公司 | Dispersant, preparation method of dispersant and application of dispersant in dispersion of nano calcium carbonate |
| JP2020163362A (en) * | 2019-03-29 | 2020-10-08 | 東洋インキＳｃホールディングス株式会社 | Dispersion agent, dispersion body, electrode and resin composition |
| WO2020203714A1 (en) * | 2019-03-29 | 2020-10-08 | 東洋インキＳｃホールディングス株式会社 | Dispersant, dispersed material, resin composition, mixture slurry, electrode film, and non-aqueous electrolyte secondary battery |
| EP3950108A4 (en) * | 2019-03-29 | 2022-05-11 | Toyo Ink SC Holdings Co., Ltd. | Dispersant, dispersed material, resin composition, mixture slurry, electrode film, and non-aqueous electrolyte secondary battery |
| WO2022131164A1 (en) * | 2020-12-14 | 2022-06-23 | 東洋インキＳｃホールディングス株式会社 | Conductive material dispersion and use of conductive material dispersion |
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