JP3133117B2 - Inorganic pigment slurry composition - Google Patents
Inorganic pigment slurry compositionInfo
- Publication number
- JP3133117B2 JP3133117B2 JP03295770A JP29577091A JP3133117B2 JP 3133117 B2 JP3133117 B2 JP 3133117B2 JP 03295770 A JP03295770 A JP 03295770A JP 29577091 A JP29577091 A JP 29577091A JP 3133117 B2 JP3133117 B2 JP 3133117B2
- Authority
- JP
- Japan
- Prior art keywords
- inorganic pigment
- weight
- parts
- slurry
- present
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、新規な紙塗工用無機顔
料スラリー組成物、詳しくは、ある特殊な微結晶セルロ
ースが添加されていることを特徴とする、極めて優れた
放置安定性を有する紙塗工用無機顔料スラリー組成物に
関するものである。BACKGROUND OF THE INVENTION The present invention relates to a novel inorganic pigment slurry composition for paper coating, and more particularly, to a method for producing a highly stable storage stability characterized by the addition of a special microcrystalline cellulose. The present invention relates to an inorganic pigment slurry composition for paper coating having the composition.
【０００２】[0002]
【従来の技術】無機顔料を水分散体として使用する用途
には、紙塗工用途、カーペットバックサイジング用途、
水性塗料用途および粘接着剤用途などがある。ところ
で、無機顔料の形態としては、一般に粉体状のものが多
い。この粉体状の無機顔料を取り扱う作業は、環境面お
よび衛生面から見て好ましいものではない。特に、粉塵
が人体に悪影響を及ぼすことは言うまでもない。従っ
て、粉体無機顔料はスラリー化の方向にいくのは必須で
ある。その代表的なものとして、重質炭酸カルシウムの
スラリー化が挙げられる。2. Description of the Related Art Uses of inorganic pigments as an aqueous dispersion include paper coating applications, carpet backsizing applications,
Applications include water-based paints and adhesives. By the way, the form of the inorganic pigment is generally powdery in many cases. The operation of handling the powdery inorganic pigment is not preferable in view of the environment and hygiene. In particular, it goes without saying that dust adversely affects the human body. Therefore, it is essential that the powdered inorganic pigment goes in the direction of slurrying. A typical example is a slurry of heavy calcium carbonate.
【０００３】一般的に、無機顔料は、比重が高く、かつ
粒子径も大きいため、ただ単に、無機顔料を水に分散し
ただけでは、すぐに無機顔料が沈澱してしまう。この対
策としては、ポリアクリル酸ソーダ系分散剤を所定量使
用することが、一般的に行われている。さらに沈澱を防
止する手段として、カルボキシル化メチルセルロースま
たはヒドロキシエチルセルロースなどの増粘剤を加え、
スラリー自体の増粘性を上げることにより沈澱をおさえ
ることも行われている。In general, since inorganic pigments have a high specific gravity and a large particle diameter, simply dispersing the inorganic pigment in water causes the inorganic pigment to precipitate immediately. As a countermeasure, it is common practice to use a predetermined amount of sodium polyacrylate dispersant. As a means to further prevent precipitation, a thickener such as carboxylated methylcellulose or hydroxyethylcellulose is added,
In some cases, precipitation is suppressed by increasing the viscosity of the slurry itself.
【０００４】[0004]
【発明が解決しようとする課題】ところが、このような
技術手段を取った重質炭酸カルシウムまたはサチンホワ
イト等のスラリー物を貯蔵タンクまたはポリビン等に貯
蔵し、１〜２週間たって観察してみると、無機顔料が底
に沈澱し，水と相分離していることが判明する。しか
も、相分離を起こしたものを再分散させようとして、か
く拌しても元の状態に戻らないことも実験的に確認して
いる。従って、このように放置安定性が悪く、かつ元の
状態に戻らないものは、日常管理上極めて不便であるば
かりか、管理コストもかかり、この解決策は急務であ
る。However, when a slurry such as heavy calcium carbonate or satin white obtained by taking such technical means is stored in a storage tank or a polyvin or the like, and observed after 1-2 weeks. It turns out that the inorganic pigment precipitates at the bottom and is phase-separated from water. In addition, it has been experimentally confirmed that even if agitation is carried out in order to re-disperse what has undergone phase separation, it does not return to the original state. Therefore, such a device that has poor storage stability and does not return to the original state is extremely inconvenient for daily management, requires high management costs, and this solution is urgently needed.
【０００５】さらに、現在、紙塗工用途で多量に使用さ
れているクレーは、スラリー化した場合、増粘性が高
く、高固形分のスラリー化が困難なため、ほとんど粉体
として供給されている。確かに、低固形分のスラリー化
は可能ではあるが、輸送コストの抑制を考慮したり、及
び最終的に使用される塗工液固形分を得るためには、低
固形分のスラリーは不適当であり、少なくても７０重量
％以上の固形分濃度が必須である。[0005] Furthermore, clay, which is currently used in a large amount for paper coating, is almost supplied as a powder because it has a high viscosity when it is slurried and it is difficult to slurry a high solid content. . Certainly, a slurry with a low solid content is possible, but a slurry with a low solid content is unsuitable in order to reduce transportation costs and obtain the solid content of the coating liquid to be finally used. And a solid content concentration of at least 70% by weight or more is essential.
【０００６】[0006]
【課題を解決するための手段】以上のような問題点に対
し、本発明者らは鋭意検討した結果、極めて有効な手段
を見いだし本発明に達した。即ち、本発明は、凝集粒子
径２μｍ以下のものを９５％以上含むクレー、凝集粒子
径１〜２μｍの重質炭酸カルシウム、および凝集粒子径
０．１〜０．５μｍの軽質炭酸カルシウムからなる群か
ら選ばれた少なくとも１種を含有する水分散中の無機顔
料１００重量部に対し、微結晶セルロース０．１〜２．
０重量部および分散剤０〜２．０重量部が添加されてな
る紙塗工用無機顔料スラリー組成物に関するものであ
る。Means for Solving the Problems The inventors of the present invention have conducted intensive studies on the above problems, and as a result, have found an extremely effective means to achieve the present invention. That is, the present invention relates to agglomerated particles
Clay and agglomerated particles containing 95% or more having a diameter of 2 μm or less
Heavy calcium carbonate having a diameter of 1 to 2 μm, and aggregated particle diameter
Group consisting of 0.1 to 0.5 μm light calcium carbonate
Microcrystalline cellulose with respect to 100 parts by weight of an inorganic pigment in an aqueous dispersion containing at least one selected from the group consisting of 0.1 to 2.
0 parts by weight of dispersing agent 0 to 2.0 parts by weight it is added
The present invention relates to an inorganic pigment slurry composition for paper coating .
【０００７】以下、本発明について詳細に説明する。本
発明の無機顔料スラリーに使用される無機顔料は、クレ
ー、または重質または軽質炭酸カルシウムである。クレ
ーは、凝集粒子径２μｍ以下のものを９５％以上含むこ
とが必要であるが、中でも比重が２．５〜３．３である
ものが望ましい。重質炭酸カルシウムは、凝集粒子径１
〜２μｍのものが必要であるが、中でも比重が２．６〜
２．８のものが望ましい。一方軽質炭酸カルシウムは、
凝集粒子径０．１〜０．５μｍのものが必要であるが、
中でも比重が２．６〜２．８のものが望ましい。これら
に加え、サチンホワイト、タルク、二酸化チタン、及び
水酸化アルミニウムなどの一般に上市されている無機顔
料を併用しても良い。 Hereinafter, the present invention will be described in detail. The inorganic pigment used in the inorganic pigment slurry of the present invention is clay or heavy or light calcium carbonate . Click Les <br/> chromatography is this including: agglomerated particle size 2 [mu] m 95% or more
Is required, and among them, those having a specific gravity of 2.5 to 3.3 are preferable . Heavy calcium carbonate has an aggregate particle size of 1
２2 μm is required, but the specific gravity is 2.6-
2.8 is desirable. On the other hand, light calcium carbonate
Agglomerated particle diameter of 0.1 to 0.5 μm is required,
Among them, those having a specific gravity of 2.6 to 2.8 are desirable. these
In addition, satin white, talc, inorganic face as it is marketed to the general such as titanium dioxide, and aluminum hydroxide
Fees may be used together.
【０００８】本発明の無機顔料スラリーに使用される微
結晶セルロースは、セルロースを酸加水分解またはアル
カリ酸化分解して得られる実質的に一定の重合度を有す
るセルロース結晶子集合体を言い、例えば、インダスト
リアル・アンド・エンジニアリング・ケミストリー、第
４２巻、第５０２頁〜第５０７頁に記載されているオー
・エー・バチスタ氏の報文によって定義されているもの
である。本発明効果を一層顕著ならしめるには、ストー
クス径１μｍ以下の割合が５重量％以上存在するような
微結晶セルロースを用いるのが好ましい。さらに、水分
の存在下で磨砕するとき、磨砕後の微結晶セルロースの
平均粒子径がストークス径で５μｍ以下とすることが好
ましい。微結晶セルロースは、無機顔料１００重量部に
対し、０．１〜２．０重量の使用が好ましい。０．１重
量部未満では、本発明の効果が発現出来ない。一方２．
０重量部を超えると、スラリーの増粘性が高く成りすぎ
て、取り扱いが困難である。The microcrystalline cellulose used in the inorganic pigment slurry of the present invention is a cellulose crystallite aggregate having a substantially constant polymerization degree obtained by acid hydrolysis or alkali oxidative decomposition of cellulose. It is defined by the report of Oh A. Batista, described in Industrial and Engineering Chemistry, Vol. 42, pp. 502-507. In order to make the effect of the present invention more remarkable, it is preferable to use microcrystalline cellulose in which the ratio of Stokes diameter of 1 μm or less is 5 wt% or more. Furthermore, when grinding in the presence of moisture, the average particle size of the microcrystalline cellulose after grinding is preferably 5 μm or less in Stokes diameter. Microcrystalline cellulose is preferably used in an amount of 0.1 to 2.0 parts by weight based on 100 parts by weight of the inorganic pigment. If the amount is less than 0.1 part by weight, the effects of the present invention cannot be exhibited. On the other hand, 2.
If the amount exceeds 0 parts by weight, the viscosity of the slurry becomes too high, and it is difficult to handle.
【０００９】本発明の無機顔料スラリーに使用される分
散剤は、ポリアクリル酸ソーダ系分散剤、トリポリ燐酸
ソーダ及びアラビアゴムなどである。分散剤を使用しな
くても本発明の効果は発揮出来るが、分散剤を使用する
ことにより、本発明の効果が、さらに発揮される。但
し、２．０重量％を超えると、スラリーの増粘性が増
し、取り扱いが困難となるとともに、効果も飽和状態に
なる。The dispersant used in the inorganic pigment slurry of the present invention is sodium polyacrylate-based dispersant, sodium tripolyphosphate, gum arabic and the like. Although the effects of the present invention can be exhibited without using a dispersant, the effects of the present invention are further exhibited by using a dispersant. However, if it exceeds 2.0% by weight, the viscosity of the slurry increases, making handling difficult, and the effect becomes saturated.
【００１０】本発明の無機顔料のスラリー作成方法は、
特に限定しないが、例えば、所定量の微結晶セルロース
を粉体で添加するよりも、予め、微結晶セルロース２〜
５重量％分散液を出来るだけセン断力がかかる分散機
（例：ホモミキサー、ホモジナイザー）で十分分散した
ものと分散剤とを無機顔料に添加し、一般に使用されて
いる分散機（例：コーレス分散機、ケディーミル）でス
ラリー化する方が好ましい。The method for preparing a slurry of an inorganic pigment of the present invention comprises:
Although not particularly limited, for example, rather than adding a predetermined amount of microcrystalline cellulose as a powder,
A 5% by weight dispersion is sufficiently dispersed with a disperser (eg, homomixer, homogenizer) that exerts shear force as much as possible and a dispersant is added to the inorganic pigment, and a commonly used disperser (eg, CORRES It is preferable to form a slurry with a disperser (Keddy mill).
【００１１】[0011]
【実施例】以下、実施例により本発明をさらに詳細に説
明するが、本発明はこれらの例によってなんら限定され
るものではない。EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention.
【００１２】[0012]
【実施例１】クレー（ＵＷ−９０；ＥＭＣ社製）１００
量部、予め、十分分散させた微結晶セルロース（アビセ
ルＲＣ−５９１；旭化成工業（株）製）の２重量％分散
液を１０重量部、ポリアクリル酸ソーダ３２重量％水溶
液（アロンＴ−４０；東亜合成化学（株）製）を１．６
重量部、さらに水を２８．３重量部加え、最終無機顔料
固形分を７２重量％としたものをコーレス分散機に、約
３０分かけ、無機顔料スラリーを調製した。このものを
放置し、相分離発生状況を観察するとともに、相分離を
起こしたものをかく拌し、かく拌可能かどうかも同時に
観察した。表１に無機顔料スラリーの組成および表２に
評価結果を示す。Embodiment 1 Clay (UW-90; manufactured by EMC) 100
10 parts by weight of a 2% by weight dispersion of microcrystalline cellulose (Avicel RC-591; manufactured by Asahi Kasei Kogyo Co., Ltd.) and a 32% by weight aqueous solution of sodium polyacrylate (Alon T-40; 1.6% by Toa Gosei Chemical Co., Ltd.)
28.3 parts by weight of water and 28.3 parts by weight of water to give a final inorganic pigment solid content of 72% by weight were taken for about 30 minutes using a CORES disperser to prepare an inorganic pigment slurry. This was left to stand, and the state of occurrence of phase separation was observed, and at the same time, the phase-separated one was stirred, and whether or not stirring was possible was simultaneously observed. Table 1 shows the composition of the inorganic pigment slurry and Table 2 shows the evaluation results.
【００１３】[0013]
【実施例２】重質炭酸カルシウム（エスカロン♯１５０
０；三共精粉（株）製）１００重量部使用し、その他の
組成及び分散方法は、実施例１と同様に調製し、観察し
た。表１に無機顔料スラリーの組成および表２に評価結
果を示す。Example 2 Heavy calcium carbonate (Escalon # 150)
0; Sankyo Seiko Co., Ltd.) (100 parts by weight), and other compositions and dispersion methods were prepared and observed in the same manner as in Example 1. Table 1 shows the composition of the inorganic pigment slurry and Table 2 shows the evaluation results.
【００１４】[0014]
【実施例３】市販の重質炭酸カルシウム（カーピタル９
０；富士カオリン（株）製）７５重量％スラリーに、実
施例１で使用した微結晶セルロースを、重質炭酸カルシ
ウム１００重量部に対し、１０重量部添加し、実施例１
と同様なかく拌を行い、評価用試料を調製し、観察し
た。表１にその組成および表２に評価結果を示す。Example 3 Commercially available heavy calcium carbonate (Carpital 9)
0; manufactured by Fuji Kaolin Co., Ltd.) was added with 10 parts by weight of the microcrystalline cellulose used in Example 1 based on 100 parts by weight of heavy calcium carbonate.
Samples for evaluation were prepared and observed in the same manner as described above. Table 1 shows the composition and Table 2 shows the evaluation results.
【００１５】[0015]
【実施例４〜５、比較例１〜３】実施例２において、微
結晶セルロースの量、あるいは微結晶セルロースの量及
び分散剤の使用量を変化させて調製し、観察した。表１
に無機顔料スラリーの組成および表２に評価結果を示
す。[Example 4-5, Comparative Example 1-3] In Example 2, the amount of microcrystalline cellulose, or by changing the amount of the amount及<br/> beauty dispersant microcrystalline cellulose were prepared and observed . Table 1
Table 2 shows the composition of the inorganic pigment slurry and Table 2 shows the evaluation results.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【表２】 [Table 2]
【００１８】[0018]
【発明の効果】本発明によると、極めて優れた放置安定
性を有する無機顔料スラリーを得ることができる。According to the present invention, an inorganic pigment slurry having extremely excellent storage stability can be obtained.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭55−24108（ＪＰ，Ａ) 特開 昭58−136660（ＪＰ，Ａ) 特開 昭59−74134（ＪＰ，Ａ) 特開 昭50−161084（ＪＰ，Ａ) 特開 平４−289294（ＪＰ，Ａ) 特開 昭63−203894（ＪＰ，Ａ) 特公 昭49−36044（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) D21H 19/52 C09C 3/10 C09D 7/02 C09D 17/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-24108 (JP, A) JP-A-58-136660 (JP, A) JP-A-59-74134 (JP, A) JP-A 50-108 161084 (JP, A) JP-A-4-289294 (JP, A) JP-A-63-203894 (JP, A) JP-B-49-36044 (JP, B1) (58) Fields investigated (Int. 7 , DB name) D21H 19/52 C09C 3/10 C09D 7/02 C09D 17/00
Claims (1)
上含むクレー、凝集粒子径１〜２μｍの重質炭酸カルシ
ウム、および凝集粒子径０．１〜０．５μｍの軽質炭酸
カルシウムからなる群から選ばれた少なくとも１種を含
有する水分散中の無機顔料１００重量部に対し、微結晶
セルロース０．１〜２．０重量部および分散剤０〜２．
０重量部が添加されてなる紙塗工用無機顔料スラリー組
成物。1. The method of claim 1 wherein the particles having an aggregate particle size of 2 μm or less are 95% or less.
Clay containing above, heavy carbonic acid calcium with aggregated particle size of 1-2 μm
And light carbonic acid having an aggregate particle size of 0.1 to 0.5 μm
Containing at least one member selected from the group consisting of calcium.
To inorganic pigment 100 parts by weight in the aqueous dispersion having, microcrystalline cellulose 0.1-2.0 parts by weight of dispersing agent 0-2.
An inorganic pigment slurry composition for paper coating to which 0 parts by weight is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03295770A JP3133117B2 (en) | 1991-11-12 | 1991-11-12 | Inorganic pigment slurry composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03295770A JP3133117B2 (en) | 1991-11-12 | 1991-11-12 | Inorganic pigment slurry composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05132644A JPH05132644A (en) | 1993-05-28 |
| JP3133117B2 true JP3133117B2 (en) | 2001-02-05 |
Family
ID=17824944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03295770A Expired - Fee Related JP3133117B2 (en) | 1991-11-12 | 1991-11-12 | Inorganic pigment slurry composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3133117B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5574081A (en) * | 1994-10-11 | 1996-11-12 | Aqualon Company | Waterborne clay-containing emulsion paints with improved application performance |
| JP4822600B2 (en) * | 2001-03-22 | 2011-11-24 | 三菱鉛筆株式会社 | Bright water-based ink composition |
| JP2003342528A (en) * | 2002-05-27 | 2003-12-03 | Kikusui Chemical Industries Co Ltd | Method for producing aqueous coating using slurry raw material |
| AU2004314692B2 (en) * | 2003-09-18 | 2010-05-20 | Fmc Corporation | A method for dispersing metal oxides |
| JP2006111699A (en) * | 2004-10-13 | 2006-04-27 | Kansai Paint Co Ltd | Pigment dispersion paste for electrodeposition coating and electrodeposition coating |
| JP5110782B2 (en) * | 2005-08-23 | 2012-12-26 | 大東化成工業株式会社 | Pigment-encapsulated cellulose powder and cosmetics, resins and paints containing the same |
| DE102007023912A1 (en) * | 2007-05-23 | 2008-11-27 | Lanxess Deutschland Gmbh | Pigment preparations of pasty or gelatinous consistency |
| JP5610628B2 (en) | 2008-06-09 | 2014-10-22 | 旭化成ケミカルズ株式会社 | Composition comprising crystalline cellulose composite |
| WO2012043213A1 (en) * | 2010-09-27 | 2012-04-05 | 新日鐵化学株式会社 | Polyhydric hydroxy resin, epoxy resin, production method therefor, epoxy resin composition and cured product thereof |
| US8702862B2 (en) * | 2012-07-03 | 2014-04-22 | Columbia Insurance Company | Universal VOC-free metallic/pearlescent colorants |
| JP6508520B2 (en) * | 2014-06-20 | 2019-05-08 | Dic株式会社 | Aqueous pigment dispersion and aqueous ink |
| JP7197096B1 (en) * | 2021-07-30 | 2022-12-27 | 香川県 | Antibacterial coating liquids for films or textiles, antibacterial products, antibacterial films, and antibacterial textiles |
| CN115260838B (en) * | 2022-08-25 | 2023-06-13 | 杭州萧山环保化工有限公司 | Modified microcrystalline cellulose inorganic pigment and preparation method thereof |
-
1991
- 1991-11-12 JP JP03295770A patent/JP3133117B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05132644A (en) | 1993-05-28 |
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