JP2004232151A - Coagulant and paper - Google Patents

Coagulant and paper Download PDF

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Publication number
JP2004232151A
JP2004232151A JP2003023893A JP2003023893A JP2004232151A JP 2004232151 A JP2004232151 A JP 2004232151A JP 2003023893 A JP2003023893 A JP 2003023893A JP 2003023893 A JP2003023893 A JP 2003023893A JP 2004232151 A JP2004232151 A JP 2004232151A
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Japan
Prior art keywords
paper
coagulant
group
carbon atoms
pulp
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JP2003023893A
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JP4396102B2 (en
Inventor
Masanori Kosuge
雅徳 小菅
Masatomi Ogawa
正富 小川
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Seiko PMC Corp
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Seiko PMC Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coagulant excellent in pitch-suppressing effect which has not been obtained hitherto and a paper. <P>SOLUTION: The coagulant is obtained by reacting alkylene diamines (a) represented by general formula (1) [wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>and R<SP>4</SP>are each same or different 1-6C alkyl group or a hydrogen group and R<SP>5</SP>is a 1-6C alkylene group] with monoamines (b) represented by general formula (2) [wherein R<SP>6</SP>and R<SP>7</SP>are each same or different 1-8C alkyl group, 1-8C alkenylene, 1-8C hydroxyalkyl group, phenyl group, benzyl group or a hydrogen atom] and epihalohydrin (c). <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、凝結剤及び紙に関し、詳しくは、ピッチの発生を減少することのできる特定の凝結剤及びそれを用いて得られる紙に関する。
【0002】
【従来の技術】
パルプ原料中には樹脂酸、リグニン物質等の有機系の疎水性物質が含まれており、さらに最近は古紙の回収比率が高くなっていることよりラテックス、ホットメルト接着剤、サイズ剤等の新たな有機系の疎水性物質も原料パルプ中に多く存在するようになっている。これらの有機系の疎水性物質の多くはパルプスラリー中にコロイドとして存在しているが、せん断力や薬品添加によるショック等により合一、巨大粒子化する。この巨大粒子は配管、チェスト、スクリーン、インレット、フェルト、ロール、ドライヤー、キャンバス等に汚れとして付着したり、紙に欠点、異物として乗るなどして、いわゆるピッチトラブルが発生する。
【0003】
また、抄紙系に存在する有機系の疎水性物質は一般にアニオン性を帯びているため、アニオントラッシュ(アニオン性夾雑物)として紙力剤、サイズ剤、歩留り剤等の内添薬品の効果を阻害する。
【0004】
そこでカチオン性重合物が▲1▼アニオン性疎水性物質のアニオン性を中和し、▲2▼巨大粒子化させることなくパルプ繊維、填料等の表面に定着させるという2つの目的で凝結剤として使用されている。
【0005】
例えば、水溶性の4級ポリアミンを用いたピッチ抑制方法(特許文献1)、アルキレンジアミン類とエピハロヒドリンとを反応させて得られる化合物からなる製紙用ピッチ抑制方法(特許文献2)が提案されている。
【0006】
【特許文献1】
米国特許第4765867号公報
【特許文献2】
特開平11−043895号公報公報
【0007】
【発明が解決しようとする課題】
しかしながら、前記のような従来のピッチ抑制方法では、まだ効果が小さく、十分な効果が得られなかった。本発明は、アルキレンジアミン、特定のアミン及びエピハロヒドリンの縮重合物を用いることにより、ピッチ抑制の効果が優れる凝結剤およびそれを用いて得られる紙を提供することを目的とする。
【0008】
【課題を解決するための手段】
本発明者は、前記の課題を解決するため、鋭意研究を重ねた結果、本願発明の凝結剤が優れたピッチ抑制効果を示すことを見出し、本発明を完成するに至った。すなわち前記課題を解決するための手段である本発明は、下記に示す一般式(1)で表されるアルキレンジアミン類(a)及び一般式(2)で表されるモノアミン類(b)とエピハロヒドリン類(c)を反応させて得られる縮重合物からなる凝結剤である。
【0009】
本発明に使用する下記一般式(1)に示すアルキレンジアミン類としてアルキレンジアミン類が挙げられる。
【化3】

Figure 2004232151
(但し、式(1)中、R、R、R、Rはそれぞれ同一あるいは異なる炭素数1〜6のアルキル基、または水素基を示し、Rは炭素数1〜6のアルキレン基を示す。)
【0010】
具体的には、ジメチルアミノエチルアミン、ジエチルアミノエチルアミン、ジメチルアミノプロピルアミン、ジエチルアミノプロピルアミン、 3−メチルアミノプロピルアミン、 N,N,N’,N’−テトラメチルエチレンジアミン、 N,N,N’,N’−テトラエチルエチレンジアミン、N,N,N’,N’−テトラメチルプロピレンジアミン、 N,N,N’,N’−テトラエチルプロピレンジアミン、ジエチルアミノ 4−アミノペンタン、テトラメチルヘキサメチレンジアミン、テトラメチル1,3−ブタンジアミン、テトラメチルフェニレンジアミン等が挙げられ、ジメチルアミノプロピルアミン、ジエチルアミノプロピルアミンが好ましい。
【0011】
本発明に使用する下記一般式(2)に示すモノアミン類としては、第1級又は第2級モノアミン類が挙げられる。
【化4】
Figure 2004232151
(式(2)中、R、Rはそれぞれ同一あるいは異なる炭素数1〜8のアルキル基、炭素数1〜8のアルケニル基、炭素数1〜8のヒドロキシアルキル基、フェニル基、ベンジル基又は水素を示す。)
【0012】
具体的には、メチルアミン、ジメチルアミン、エチルアミン、ジエチルアミン、 n−プロピルアミン、ジ n−プロピルアミン、イソプロピルアミン、ジイソプロピルアミン、 n−ブチルアミン、ジn−ブチルアミン、s−ブチルアミン、ジs−ブチルアミン、 t−ブチルアミン、ジt−ブチルアミン、ヘキシルアミン、ジヘキシルアミン、シクロヘキシルアミン、ジシクロヘキシルアミン、2エチルヘキシルアミン、ジ(2エチルヘキシル)アミン等のアルキル基を有するモノアミン類、アリルアミン、ジアリルアミン等のアルケニル基を有するモノアミン類、モノエタノールアミン、ジエタノールアミン、ヒドロキシプロピルアミン、ジヒドロキシプロピルアミン、 N−メチルエタノールアミン、アミノ安息香酸等のヒドロキシアルキル基を有するモノアミン類、アニリン、ジフェニルアミン等のフェニル基を有するモノアミン類、ベンジルアミン、ジベンジルアミン等のベンジル基を有するモノアミン類、アンモニア等が挙げられ、炭素数4〜6のアルキル基が好ましい。具体的には n−ブチルアミン、ジn−ブチルアミン、 s−ブチルアミン、ジs−ブチルアミン、 t−ブチルアミン、ジ t−ブチルアミン、ヘキシルアミン、ジヘキシルアミン、シクロヘキシルアミン、ジシクロヘキシルアミンが好ましい。
【0013】
本発明に使用できるエピハロヒドリン類としては、エピクロロヒドリン、エピブロモヒドリン、メチルエピクロロヒドリン等が挙げられ、これらを単独でまたは2種以上を用いることができる。これらのエピハロヒドリン類の中でも、エピクロロヒドリンが最も好ましい。
【0014】
アルキレンジアミン類(a)とモノアミン類(b)の使用モル比率は99.9/0.1〜70/30であり、好ましくは99.5/0.5〜80/20、更に好ましくは99.5/0.5〜90/10である。モノアミン類(b)が0.1モル%未満の場合、十分な効果が発揮されない場合があり、30モル%を越える場合、反応途中にゲル化したり、所定の粘度に達しない場合がある。
【0015】
さらにアルキレンジアミン類(a)とモノアミン類(b)の合計である全アミン類/エピハロヒドリン類(c)の使用モル比率は55/45〜40/60であり、好ましくは53/47〜45/55、更に好ましくは53/47〜47/53である。エピハロヒドリン類が45モル%未満の場合、分子量を高めることが出来ずピッチ抑制の効果が低下することがあり、60%を越える場合、増粘、ゲル化により反応制御が困難になる場合がある。
【0016】
本発明の凝結剤を使用する場合、適応するパルプ種類の制限はなく、クラフトパルプあるいはサルファイトパルプ等の晒あるいは未晒化学パルプ、砕木パルプやサーモメカニカルパルプ等の晒あるいは未晒機械パルプ、新聞古紙、雑誌古紙、段ボール古紙あるいは脱墨古紙等の古紙パルプ、マシン損紙、コート損紙等のブロークパルプが挙げられる。特にアニオントラッシュが多く含まれる機械パルプ、古紙パルプ、ブロークパルプに添加することが望ましい。
【0017】
本発明の凝結剤を添加する場所の制限はなく、パルパー、タンク、エキスト、原料チェスト、ミキシングチェスト、マシンチェスト、種箱、ファンポンプ、スクリーン等が挙げられる。アニオントラッシュ同士の巨大粒子化が起こる前に添加する意味から、パルパー、タンク、エキスト、原料チェスト、ミキシングチェスト、マシンチェストまでの抄紙機から離れた場所に添加することが望ましい。
【0018】
本発明の凝結剤の添加率は対パルプ乾燥重量 0.005%〜 1%であり、好ましくは 0.01%〜 0.5%である。添加率が0.005%より少ないとピッチ抑制の効果が発揮出来ない場合があり、添加率が1%を越える場合は抄紙系のイオン性がカチオン過剰になり、パルプ、填料、内添薬品等の歩留りが低下し、発泡の原因となることがある。
【0019】
本発明の凝結剤は酸性、中性条件及びアルカリ性条件で行われる紙及び板紙の製造の際に採用することができ、得られる紙及び板紙としては、印刷筆記用紙、コート原紙、PPC用紙、インクジェット用紙、情報用紙、書籍用紙、写真原紙、包装用紙、純白ロール紙、感圧原紙、感熱原紙、中質紙、石膏ボード原紙、難燃紙、新聞用紙、白板紙、金属合紙、ライナー、缶詰ライナー、中芯及び紙管原紙等を挙げることができる。
【0020】
【実施例】
以下、実施例及び比較例を挙げて本発明をより具体的に説明するが、本発明は下記の実施例に限定されるものでは無い。尚、%は特に表示がない限り、重量基準による。
【0021】
実施例1
撹拌機、温度計、還流冷却管および窒素ガス導入管を付した1リットルの四つ口フラスコに水560部、ジメチルアミノエチルプロピルアミン 119.75部(95モル%)、シクロヘキシルアミン6.12部(5モル%)を仕込み、撹拌下、エピクロロヒドリン 114.13部(100モル%)を40℃を越えないよう1.5時間かけて滴下した後、70℃に昇温し、3時間保温した後冷却して反応を完結させた。得られた反応生成物は固形分濃度30.2%、粘度350mPa・s、pH9.2の水溶性樹脂であった。これを凝結剤Aとする。
【0022】
実施例2〜12
表1の組成で実施例1と同様の方法を用いて凝結剤B〜Lを製造した。凝結剤A〜Lの組成、物性を表1に示す。
【0023】
比較例1〜5
表2の組成で実施例1と同様の方法を用いて比較例用の凝結剤a〜eを製造した。凝結剤a〜eの組成、物性を表2に示す。
【0024】
【表1】
Figure 2004232151
【0025】
【表2】
Figure 2004232151
【0026】
応用例1
濃度3%のコートブローク100gを200ミリリットルのビーカーに入れ、500rpmで撹拌しながら凝結剤Aを500ppm添加し、1分間撹拌を続けた。撹拌終了後、コートブロークを吸引濾過し、得られた濾液について620nmにおける光透過率とイオン化度を測定した。凝結剤B〜Lについても同様の実験を行い、その結果を表3に示す。
【0027】
応用例2
濃度3%の脱墨パルプ100gを200ミリリットルのビーカーに入れ、500rpmで撹拌しながら凝結剤Aを100ppm添加し、1分間撹拌を続けた。撹拌終了後、脱墨パルプを吸引濾過し、得られた濾液について620nmにおける光透過率とイオン化度を測定した。凝結剤B〜Lについても同様の実験を行い、その結果を表3に示す。
【0028】
比較応用例1
応用例1で凝結剤Aの代わりに比較例用の凝結剤a〜eを使用すること、あるいは凝結剤を使用しないこと以外、同一条件で実験を行い、その結果を表4に示す。
【0029】
比較応用例2
応用例2で凝結剤Aの代わりに凝結剤a〜eを使用すること、あるいは凝結剤を使用しないこと以外、同一条件で実験を行い、その結果を表4に示す。
【0030】
光透過率:分光光度計U1000(日立製作所社製)を使用し、波長620nmにおける濾液の光透過率を測定した。数値が高いほど、濾液の濁りが少ないことを示し、ピッチ等の汚れが低減できると考えられる。
【0031】
イオン化度:PCD(particle charge detector、ミューテック社製)を用いて濾液10ミリリットルを1/1000Nのポリジアリルジメチルアンモニウムクロライド溶液にて滴定した。数値が大きいほど、濾液中のアニオン夾雑物を封鎖する能力が高いことを示し、ピッチ等の汚れが低減できると考えられる。
【0032】
【表3】
Figure 2004232151
【0033】
【表4】
Figure 2004232151
【0034】
【発明の効果】
表3、4から本発明の特定構造を有するアルキレンジアミン類及びモノアミン類とエピハロヒドリン類を反応させて得られる凝結剤は優れたピッチ抑制効果を示す。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coagulant and paper, and more particularly to a specific coagulant capable of reducing the occurrence of pitch and paper obtained using the same.
[0002]
[Prior art]
Pulp raw materials contain organic hydrophobic substances such as resin acids and lignin substances. Recently, the recovery rate of waste paper has been increasing, and new materials such as latex, hot melt adhesives, and sizing agents have been used. Many organic hydrophobic substances are also present in raw pulp. Many of these organic hydrophobic substances are present as colloids in the pulp slurry, but they are formed into large particles by coalescence due to a shear force or a shock due to the addition of chemicals. The giant particles adhere to the pipes, chests, screens, inlets, felts, rolls, dryers, canvases, and the like as dirt, or get on paper as defects or foreign substances, causing so-called pitch trouble.
[0003]
In addition, since organic hydrophobic substances present in papermaking systems are generally anionic, the effects of internal chemicals such as paper strength agents, sizing agents, retention agents, etc. are impaired as anion trash (anionic contaminants). I do.
[0004]
Therefore, the cationic polymer is used as a coagulant for the two purposes of (1) neutralizing the anionicity of the anionic hydrophobic substance and (2) fixing it to the surface of pulp fibers, fillers, etc. without forming giant particles. Have been.
[0005]
For example, a pitch control method using a water-soluble quaternary polyamine (Patent Document 1) and a paper pitch control method comprising a compound obtained by reacting an alkylenediamine with epihalohydrin (Patent Document 2) have been proposed. .
[0006]
[Patent Document 1]
U.S. Pat. No. 4,765,867 [Patent Document 2]
JP-A-11-043895
[Problems to be solved by the invention]
However, the conventional pitch suppression method as described above has a small effect, and a sufficient effect has not been obtained. An object of the present invention is to provide a coagulant having an excellent effect of suppressing pitch by using a polycondensate of an alkylenediamine, a specific amine and epihalohydrin, and a paper obtained by using the coagulant.
[0008]
[Means for Solving the Problems]
The present inventor has conducted intensive studies in order to solve the above-mentioned problems, and as a result, has found that the coagulant of the present invention exhibits an excellent pitch suppressing effect, and has completed the present invention. That is, the present invention, which is a means for solving the above problems, comprises an alkylene diamine (a) represented by the following general formula (1) and a monoamine (b) represented by the following general formula (2) and epihalohydrin It is a coagulant comprising a condensation polymer obtained by reacting the compound (c).
[0009]
The alkylenediamines represented by the following general formula (1) used in the present invention include alkylenediamines.
Embedded image
Figure 2004232151
(However, in the formula (1), R 1 , R 2 , R 3 , and R 4 each represent the same or different alkyl group having 1 to 6 carbon atoms or hydrogen group, and R 5 represents alkylene having 1 to 6 carbon atoms. Represents a group.)
[0010]
Specifically, dimethylaminoethylamine, diethylaminoethylamine, dimethylaminopropylamine, diethylaminopropylamine, 3-methylaminopropylamine, N, N, N ', N'-tetramethylethylenediamine, N, N, N', N '-Tetraethylethylenediamine, N, N, N', N'-tetramethylpropylenediamine, N, N, N ', N'-tetraethylpropylenediamine, diethylamino 4-aminopentane, tetramethylhexamethylenediamine, tetramethyl1, Examples thereof include 3-butanediamine and tetramethylphenylenediamine, and dimethylaminopropylamine and diethylaminopropylamine are preferable.
[0011]
The monoamines represented by the following general formula (2) used in the present invention include primary or secondary monoamines.
Embedded image
Figure 2004232151
(In the formula (2), R 6 and R 7 are the same or different and each have an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 1 to 8 carbon atoms, a hydroxyalkyl group having 1 to 8 carbon atoms, a phenyl group, and a benzyl group. Or hydrogen.)
[0012]
Specifically, methylamine, dimethylamine, ethylamine, diethylamine, n-propylamine, di-n-propylamine, isopropylamine, diisopropylamine, n-butylamine, di-n-butylamine, s-butylamine, di-s-butylamine, Monoamines having an alkyl group such as t-butylamine, di-t-butylamine, hexylamine, dihexylamine, cyclohexylamine, dicyclohexylamine, 2-ethylhexylamine, di (2-ethylhexyl) amine, and monoamines having an alkenyl group such as allylamine and diallylamine , Monoethanolamine, diethanolamine, hydroxypropylamine, dihydroxypropylamine, N-methylethanolamine, hydroxyalkyl such as aminobenzoic acid Monoamines having a group, monoamines having aniline, a phenyl group diphenylamine, benzylamine, monoamines having benzyl group dibenzylamine and the like, ammonia and the like, preferably an alkyl group having 4-6 carbon atoms. Specifically, n-butylamine, di-n-butylamine, s-butylamine, di-s-butylamine, t-butylamine, di-t-butylamine, hexylamine, dihexylamine, cyclohexylamine, and dicyclohexylamine are preferred.
[0013]
Examples of the epihalohydrins that can be used in the present invention include epichlorohydrin, epibromohydrin, methyl epichlorohydrin and the like, and these can be used alone or in combination of two or more. Of these epihalohydrins, epichlorohydrin is most preferred.
[0014]
The molar ratio of the alkylene diamines (a) to the monoamines (b) is from 99.9 / 0.1 to 70/30, preferably from 99.5 / 0.5 to 80/20, and more preferably from 99.5 / 0.5 to 80/20. 5 / 0.5 to 90/10. When the amount of the monoamine (b) is less than 0.1 mol%, a sufficient effect may not be exhibited. When the amount exceeds 30 mol%, gelation may occur during the reaction or the viscosity may not reach a predetermined value.
[0015]
The molar ratio of the total amines / epihalohydrins (c), which is the sum of the alkylenediamines (a) and the monoamines (b), is 55/45 to 40/60, preferably 53/47 to 45/55. And more preferably 53/47 to 47/53. When the epihalohydrin content is less than 45 mol%, the molecular weight cannot be increased, and the effect of suppressing pitch may be reduced. When it exceeds 60%, the reaction may be difficult to control due to thickening and gelation.
[0016]
When using the coagulant of the present invention, there is no limitation on the type of pulp to be applied, bleached or unbleached chemical pulp such as kraft pulp or sulfite pulp, bleached or unbleached mechanical pulp such as groundwood pulp or thermomechanical pulp, newspaper Waste paper pulp such as waste paper, magazine waste paper, corrugated cardboard waste paper or deinked waste paper, and broke pulp such as machine broke, coated broke, etc. In particular, it is desirable to add it to mechanical pulp, waste paper pulp, and broke pulp containing a large amount of anion trash.
[0017]
There is no limitation on the place where the coagulant of the present invention is added, and examples thereof include a pulper, a tank, an extract, a raw material chest, a mixing chest, a machine chest, a seed box, a fan pump, and a screen. It is desirable to add the anion trash to a location away from the paper machine, such as a pulper, a tank, an extract, a raw material chest, a mixing chest, and a machine chest, in order to add the anion trash before the formation of giant particles.
[0018]
The addition rate of the coagulant of the present invention is from 0.005% to 1%, preferably from 0.01% to 0.5%, based on the dry weight of pulp. If the addition ratio is less than 0.005%, the effect of suppressing pitch may not be exhibited. If the addition ratio exceeds 1%, the ionicity of the papermaking system becomes cation-excessive, and pulp, filler, internal additives, etc. May lower the yield and cause foaming.
[0019]
The coagulant of the present invention can be employed in the production of paper and paperboard performed under acidic, neutral and alkaline conditions, and the resulting paper and paperboard include printing writing paper, coated base paper, PPC paper, and inkjet paper. Paper, information paper, book paper, photographic base paper, wrapping paper, pure white roll paper, pressure-sensitive base paper, heat-sensitive base paper, medium quality paper, gypsum board base paper, flame retardant paper, newsprint paper, white board paper, metal interleaf paper, liner, canned Examples thereof include a liner, a core, and a paper tube base paper.
[0020]
【Example】
Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. The percentages are based on weight unless otherwise specified.
[0021]
Example 1
560 parts of water, 119.75 parts (95 mol%) of dimethylaminoethylpropylamine and 6.12 parts of cyclohexylamine were placed in a 1-liter four-necked flask equipped with a stirrer, a thermometer, a reflux condenser and a nitrogen gas inlet tube. (5 mol%), 114.13 parts (100 mol%) of epichlorohydrin was added dropwise with stirring over 1.5 hours so as not to exceed 40 ° C., and the temperature was raised to 70 ° C. for 3 hours. After keeping the temperature, the reaction was completed by cooling. The obtained reaction product was a water-soluble resin having a solid content of 30.2%, a viscosity of 350 mPa · s, and a pH of 9.2. This is designated as coagulant A.
[0022]
Examples 2 to 12
Coagulants B to L were produced using the compositions shown in Table 1 and the same method as in Example 1. Table 1 shows the composition and physical properties of the coagulants A to L.
[0023]
Comparative Examples 1 to 5
Coagulants a to e for comparative examples were produced using the compositions shown in Table 2 and the same method as in Example 1. Table 2 shows the composition and physical properties of the coagulants a to e.
[0024]
[Table 1]
Figure 2004232151
[0025]
[Table 2]
Figure 2004232151
[0026]
Application example 1
100 g of a 3% -concentration coat broke was placed in a 200 ml beaker, 500 ppm of coagulant A was added while stirring at 500 rpm, and stirring was continued for 1 minute. After completion of the stirring, the coat broke was subjected to suction filtration, and the obtained filtrate was measured for light transmittance and ionization degree at 620 nm. Similar experiments were performed for the coagulants B to L, and the results are shown in Table 3.
[0027]
Application example 2
100 g of the deinked pulp having a concentration of 3% was placed in a 200 ml beaker, and 100 ppm of the coagulant A was added while stirring at 500 rpm, and stirring was continued for 1 minute. After the stirring, the deinked pulp was subjected to suction filtration, and the obtained filtrate was measured for light transmittance and ionization degree at 620 nm. Similar experiments were performed for the coagulants B to L, and the results are shown in Table 3.
[0028]
Comparative application example 1
Experiments were performed under the same conditions as in Application Example 1 except that the coagulants a to e for the comparative example were used instead of the coagulant A, or no coagulant was used. The results are shown in Table 4.
[0029]
Comparative application example 2
Experiments were conducted under the same conditions as in Application Example 2 except that coagulants a to e were used instead of coagulant A, or no coagulant was used, and the results are shown in Table 4.
[0030]
Light transmittance: The light transmittance of the filtrate at a wavelength of 620 nm was measured using a spectrophotometer U1000 (manufactured by Hitachi, Ltd.). The higher the value, the lower the turbidity of the filtrate, and it is considered that contamination such as pitch can be reduced.
[0031]
Ionization degree: Ten milliliters of the filtrate was titrated with a 1 / 1000N polydiallyldimethylammonium chloride solution using PCD (particle charge detector, manufactured by Mutech Co., Ltd.). The larger the value, the higher the ability to sequester anion impurities in the filtrate, and it is considered that contamination such as pitch can be reduced.
[0032]
[Table 3]
Figure 2004232151
[0033]
[Table 4]
Figure 2004232151
[0034]
【The invention's effect】
From Tables 3 and 4, the coagulants obtained by reacting the alkylene diamines and monoamines having a specific structure of the present invention with epihalohydrins show excellent pitch suppressing effect.

Claims (5)

下記一般式(1)で表されるアルキレンジアミン類(a)及び下記一般式(2)で表されるモノアミン類(b)とエピハロヒドリン類(c)を反応させて得られる凝結剤。
Figure 2004232151
(但し、式(1)中、R、R、R、Rはそれぞれ同一あるいは異なる炭素数1〜6のアルキル基、または水素基を示し、Rは炭素数1〜6のアルキレン基を示す。)
Figure 2004232151
(式(2)中、R、Rはそれぞれ同一あるいは異なる2種の炭素数1〜8のアルキル基、炭素数1〜8のアルケニル基、炭素数1〜8のヒドロキシアルキル基、フェニル基、ベンジル基又は水素を示す。)
A coagulant obtained by reacting an alkylenediamine (a) represented by the following general formula (1) and a monoamine (b) represented by the following general formula (2) with an epihalohydrin (c).
Figure 2004232151
(However, in the formula (1), R 1 , R 2 , R 3 , and R 4 each represent the same or different alkyl group having 1 to 6 carbon atoms or hydrogen group, and R 5 represents alkylene having 1 to 6 carbon atoms. Represents a group.)
Figure 2004232151
(In the formula (2), R 6 and R 7 are the same or different and are two kinds of alkyl groups having 1 to 8 carbon atoms, alkenyl groups having 1 to 8 carbon atoms, hydroxyalkyl groups having 1 to 8 carbon atoms, and phenyl groups. , A benzyl group or hydrogen.)
アルキレンジアミン類(a)がジアルキルアミノアルキルアミンであることを特徴とする請求項1記載の凝結剤。The coagulant according to claim 1, wherein the alkylenediamine (a) is a dialkylaminoalkylamine. アルキレンジアミン類(a)がジメチルアミノプロピルアミンであることを特徴とする請求項2記載の凝結剤。The coagulant according to claim 2, wherein the alkylenediamine (a) is dimethylaminopropylamine. モノアミン類(b)の置換基R及び/又はRの炭素数が3〜6であることを特徴とする請求項1ないし3のいずれかに記載の凝結剤。Coagulant according to any one of carbon atoms of the substituents R 6 and / or R 7 in monoamines (b) there is no claim 1, characterized in that 3 to 6 3. 請求項1ないし4のいずれかに記載の凝結剤を用いて得られる紙。Paper obtained using the coagulant according to any one of claims 1 to 4.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007070752A (en) * 2005-09-06 2007-03-22 Oji Paper Co Ltd Slip sheet for glass sheet and method for pulp for slip sheet for glass sheet
JP2007113126A (en) * 2005-10-18 2007-05-10 Seiko Pmc Corp Method for producing paperboard
JP2007154349A (en) * 2005-12-02 2007-06-21 Harima Chem Inc Method for producing paperboard
JP2007231487A (en) * 2006-03-03 2007-09-13 Kurita Water Ind Ltd Method and apparatus for monitoring effect of papermaking chemical and method and apparatus for controlling amount injected
JP2007262628A (en) * 2006-03-29 2007-10-11 Kurita Water Ind Ltd Method for monitoring effect of papermaking chemical and method for controlling injection rate of the papermaking chemical
JP2009249756A (en) * 2008-04-04 2009-10-29 Hymo Corp Method for preventing formation of defect of paper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007070752A (en) * 2005-09-06 2007-03-22 Oji Paper Co Ltd Slip sheet for glass sheet and method for pulp for slip sheet for glass sheet
JP2007113126A (en) * 2005-10-18 2007-05-10 Seiko Pmc Corp Method for producing paperboard
JP2007154349A (en) * 2005-12-02 2007-06-21 Harima Chem Inc Method for producing paperboard
JP2007231487A (en) * 2006-03-03 2007-09-13 Kurita Water Ind Ltd Method and apparatus for monitoring effect of papermaking chemical and method and apparatus for controlling amount injected
JP2007262628A (en) * 2006-03-29 2007-10-11 Kurita Water Ind Ltd Method for monitoring effect of papermaking chemical and method for controlling injection rate of the papermaking chemical
JP2009249756A (en) * 2008-04-04 2009-10-29 Hymo Corp Method for preventing formation of defect of paper

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