JPS6155294A - Pitch dispersant - Google Patents

Pitch dispersant

Info

Publication number
JPS6155294A
JPS6155294A JP17428484A JP17428484A JPS6155294A JP S6155294 A JPS6155294 A JP S6155294A JP 17428484 A JP17428484 A JP 17428484A JP 17428484 A JP17428484 A JP 17428484A JP S6155294 A JPS6155294 A JP S6155294A
Authority
JP
Japan
Prior art keywords
pitch
pva
formula
dispersant
water
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.)
Granted
Application number
JP17428484A
Other languages
Japanese (ja)
Other versions
JPH0214479B2 (en
Inventor
石原 正夫
梅川 治
片山 榮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Katayama Chemical Inc
Original Assignee
Katayama Chemical Inc
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
Application filed by Katayama Chemical Inc filed Critical Katayama Chemical Inc
Priority to JP17428484A priority Critical patent/JPS6155294A/en
Publication of JPS6155294A publication Critical patent/JPS6155294A/en
Publication of JPH0214479B2 publication Critical patent/JPH0214479B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Paper (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 ←) 発明の目的 (産業上の利用分野) この発明は、ピッチ分散剤KIliQする。更に詳しく
は、紙、パルプ等の抄造のクローズ化に伴ない生じるピ
ッチ障害を抑制するピッチ分散剤に関する。
[Detailed Description of the Invention] ←) Object of the Invention (Field of Industrial Application) The present invention provides a pitch dispersant KIliQ. More specifically, the present invention relates to a pitch dispersant that suppresses pitch disturbances that occur as a result of the closed manufacturing of paper, pulp, and the like.

(従来の技術) 最近、紙、パルプの抄造において、水資源節約のため、
抄紙系のクローズ化が盛んに行われるようKなっている
。しかしながら、クローズ化が進むにつれてピッチ(た
だし、ここで言うピッチとは、通常紙パルプ製造工程に
おいて木材細胞から剥離した天然樹脂又はガム質ピッチ
もしくはその他の添加剤に由来する有機物を主体とする
小球状の粘着性凝集物を意味する)の生成頻度が増加す
ゐに至っている。
(Prior art) Recently, in paper and pulp manufacturing, in order to save water resources,
The papermaking industry is becoming more and more closed. However, as the process of closing progresses, pitch (here, pitch refers to small spherical particles consisting mainly of organic matter derived from natural resins or gummy pitch or other additives exfoliated from wood cells during the paper pulp manufacturing process). (meaning sticky aggregates) are occurring with increasing frequency.

なお、現在の学説によれば、抄紙系でのピッチ障害の発
生には、コロイダルピッチの急激な凝集巨大化が大きい
役割を演じていると述べられている。即ちこのコロイダ
ルピッチが何等かの外的作用、例えば大きい剪断力、過
剰の硫酸バンドの添加、急激なpHの変化等の作用を受
けて、コロイドが破壊され、必要以上のピッチ凝集巨大
化が起ってビツチト2プルが生じると言われている。そ
して、このピッチは抄紙工程におけるチェスト、ビータ
−、ワイヤー、フェルト、ロール等の製紙機械設備各所
に凝集付着して作業熊本を低下させたり、あるいは製品
中に混入してパルプシー)または紙の汚点または穴の原
因となったり、はなはだしい場合には操業を停止せしめ
るに至るなど種々のピッチ障害をもたらす。
According to current theory, the rapid aggregation of colloidal pitch plays a major role in the occurrence of pitch failure in papermaking systems. That is, when this colloidal pitch is subjected to some external action, such as a large shearing force, addition of excessive sulfuric acid band, or a sudden change in pH, the colloid is destroyed and the pitch aggregates to a larger size than necessary. It is said that a two-pull phenomenon occurs. This pitch aggregates and adheres to various parts of the papermaking machine equipment such as chests, beaters, wires, felts, and rolls during the papermaking process, reducing the quality of the work, or it mixes into the product, causing pulp stains and stains on the paper. It causes various pitch problems, such as causing holes and, in severe cases, causing the operation to stop.

従来、このようなピッチ障害の防止対策として稽々の方
法が採用されている。たとえば、■タルク、硅藻土のご
とき多孔性無機性質を抄紙系に微粉末の状態で投入し、
系に存在するピッチを吸着せしめるとともに1紙料中に
この無機物質を抄き込む方法、0分散剤を投入して、ピ
ッチをできるだけ数組粒子の状態に保持し、コロイド状
のピッチの凝集巨大化を防止する方法等がある。前記■
の方法において用いられる分散剤としては、ポリオキシ
エチレンアルキルフェノールエーテル等のノニオン系界
面活性剤がジく利用されている。
Hitherto, methods have been adopted to prevent such pitch disturbances. For example, ■ Porous inorganic materials such as talc and diatomaceous earth are introduced into the papermaking system in the form of fine powder.
A method of adsorbing the pitch existing in the system and incorporating this inorganic substance into the paper stock, adding a dispersant to maintain the pitch in the state of several pairs of particles as much as possible, and creating a colloidal pitch agglomeration giant. There are ways to prevent this from happening. Said■
As the dispersant used in this method, nonionic surfactants such as polyoxyethylene alkylphenol ether are often used.

(発明が解決しようとする問題点) しかしながら、上記のごとき分散剤を用いた場合、水系
のクローズ化が進むにつれて、界面活性剤が系中に県債
すること、起泡性の大きいこと等の問題点が生じてくる
。そのた峠、最近、他種の分散剤、とくに水溶性高分子
に注目が向けられつつある。例えばRohm & Ha
as社はポリビニルビマリトンのホモポリマーあるいは
コポリマーをピッチ分散剤として提案している。
(Problems to be Solved by the Invention) However, when using the above-mentioned dispersants, as aqueous systems become more and more closed, surfactants tend to settle into the system, have high foaming properties, etc. Problems arise. Recently, attention has been focused on other types of dispersants, especially water-soluble polymers. For example, Rohm & Ha
AS has proposed a homopolymer or copolymer of polyvinyl bimariton as a pitch dispersant.

日本に於て世界にさきかけて、合成繊維に利用されたポ
リビニルアルコールは水に可溶性の重合物であって低酸
なる原料資材と首える。かかるポリビニルアルコール(
以下にPVAと略称)は紙質増強剤として紙の抄造に使
用されていることは公知に属するが、ピッチの分散剤な
いしは保護コロイド剤として利用して有効なる効果を得
た事実は見当らず、本発明者等はこの点に着目して、上
記問題点を解決すべく鋭意研究した結果、興味ある事5
At−見出しこの発r!AK到達した。
Polyvinyl alcohol, which was used in synthetic fibers in Japan for the first time in the world, is a water-soluble polymer and is a low-acid raw material. Such polyvinyl alcohol (
Although it is known that PVA (hereinafter abbreviated as PVA) is used as a paper quality enhancer in paper making, there is no evidence that it has been used as a pitch dispersant or protective colloid to obtain any effective effects. The inventors focused on this point, and as a result of intensive research to solve the above problems, five interesting things were discovered.
At-headline this release! AK has been reached.

(ロ)発明の構成 いわゆるPVAa単体であるビニルアルコールを重合し
て得られるものではなく、ポリ酢酸ビニルのけん化によ
って製造されている0従りて完全なるけん化は期し難く
、幾分のエステル結合を分子中に残存せしめるが故に1
種のビニルアルコール−酢酸ビニル共重合体と言える、
通常、かような共重合体は単KPVAと呼ばれている。
(B) Structure of the Invention It is not obtained by polymerizing vinyl alcohol, which is a simple substance of PVAa, but is produced by saponifying polyvinyl acetate. Therefore, complete saponification is difficult to expect, and some ester bonds may occur. Because it remains in the molecule, 1
It can be said to be a type of vinyl alcohol-vinyl acetate copolymer.
Such copolymers are commonly referred to as mono-KPVA.

このことを式で示すと以下の通シとなる。This can be expressed in a formula as shown below.

ポリ酢酸ビニル      部分けん化物(n又はm 
+ tは重合度に相当する)すなわち、市販の高純度の
PVAは95〜9〇七ルチのけん化度を示し、100モ
ル饅のけん化度のものは存在しない0な訃、ここでけん
化度というのは、部分けん化物であるPVAに於て、水
ff基の割合をモルチで表わした値のことで、上記式の
□xiooで得られる値のことである。
Polyvinyl acetate partially saponified product (n or m
+ t corresponds to the degree of polymerization) In other words, commercially available high-purity PVA shows a saponification degree of 95 to 907 mol, and there is no saponification degree of 100 mol. is the value expressed in moles of the proportion of water ff groups in PVA, which is a partially saponified product, and is the value obtained by □xioo in the above formula.

m + を 本発明者らは、かような部分けん化物に相当する市販の
PVAのけん化度とピッチ分散能(試験法は後述)との
関係を求め、 ■ けん化度95モルチ以上の所謂純PVAに近いPV
Aにあってはピッチ分散能を全熱保有しない、 ■ けん化度90〜85そルチ程度のPVAKなるとピ
ッチ分散能を示し始める。そして其の分散能社パルプ工
業界に於て広く使用されているピッチ分散剤のそれに匹
敵する、 ■ けん化度70〜8〇七ルチのPVAになると更に大
きい分散能を示し■の場合のPVAよシ1オーダー高い
分散能を発揮する、 ■ かようなピッチ分散能の効果はけん化度40モルチ
のものまで認められる、 という事実を見出した。
The present inventors determined the relationship between the saponification degree and pitch dispersion ability (test method will be described later) of commercially available PVA corresponding to such a partially saponified product, and found that m PV close to
PVAK with a saponification degree of 90 to 85 begins to exhibit pitch dispersion ability. Its dispersion ability is comparable to that of the pitch dispersant widely used in the pulp industry, and PVA with a saponification degree of 70 to 807 has an even greater dispersion ability than PVA in the case of ■. It was discovered that the effect of such pitch dispersion ability is observed up to a saponification degree of 40 molti.

かくしてこの発明によれば、 式(1): で表わきれる41′・Y成J4j位と、式@: で表わされる11′1成単位からなり、式(I)で表わ
される結成単位が40〜90モル条、式OI)で表わさ
れる結成単位が60〜10モル条である水溶性のポリビ
ニルアルコールを1丁効成分とするピッチ分散剤が提供
される。
Thus, according to the present invention, the formation unit represented by formula (I) is composed of the 41' Y component J4j represented by the formula (1): and the 11'1 component represented by the formula @:, and the forming unit represented by the formula (I) is 40 There is provided a pitch dispersant containing as an active ingredient a water-soluble polyvinyl alcohol having 60 to 10 moles of the forming unit represented by the formula OI).

本発明の水溶性のPVAにおける式(1)の結成単位の
占める割合は40〜90モル条でちシ、式(4)の構成
単位は60〜10モル条とされる。ここで式CI)の構
成単位の占める割合が90七ルチを越えると、ピッチ分
散能が不充分でろり、40七ルチより少ないと水に溶け
ないので適していない。好ましくは70〜80モル条で
ある。
The proportion of the structural units of formula (1) in the water-soluble PVA of the present invention is 40 to 90 mol, and the proportion of the structural units of formula (4) is 60 to 10 mol. If the proportion of the constituent units of formula CI) exceeds 907, the pitch dispersion ability will be insufficient and the composition will become sluggish, and if it is less than 407, it will not dissolve in water, making it unsuitable. Preferably it is 70 to 80 moles.

上記PVAの重合度としては特に限定されないが、少な
くとも水に溶解して透明になる溶液をつくる程度のもの
であればよく、通當約300〜2000のものを好適に
用いることができる。
The degree of polymerization of the PVA is not particularly limited, but it may be at least as long as it can dissolve in water to form a transparent solution, and a degree of about 300 to 2000 can be suitably used.

この発明で用いられるPVAの量的使用範囲は、存在す
るピッチの量によシ左右されるが、通常、パルプに対し
て、o、oi〜0.2重ft %の添加により充分な効
果を挙げることができ、0.01〜0.03重量%の添
加が好ましい0また他の公知のピッチ分散剤、たとえば
ノニオン系界面活性剤などとの併用も可能である。
The quantitative range of use of PVA used in this invention depends on the amount of pitch present, but usually a sufficient effect can be obtained by adding o, oi to 0.2 weight % to the pulp. It is preferable to add 0.01 to 0.03% by weight of pitch dispersants, and it is also possible to use them in combination with other known pitch dispersants, such as nonionic surfactants.

また、この発明の有効成分であるPVAは、アルコール
、水等のような適当な溶媒に分散し、製剤化してこれを
用いることができる0 (実施例) 以下、実施例を挙げてこの発明を説明する。
In addition, PVA, which is the active ingredient of this invention, can be used by dispersing it in a suitable solvent such as alcohol, water, etc. and formulating it. explain.

(ピッチの組成) Burk 、 JM氏はNon−mNon−m1cro
biolo depositproblems and
 thsir s)’stematic contro
l−8outhernpulp Paper Mfr 
42 (12)  : 19−21(Dsc1979)
に於てコロイダルピッチ線40〜50チの樹脂酸、15
〜20%の脂肪酸とステq−ルよシなシ残シはステリル
エステル、ヂ及びトリグリセライドよりなることを報告
している0そして本発明の実施例で用いる系製紙工場の
ワイヤーに付着したピッチは、そのエタノール抽出した
ものにつき分析を行った結果、樹脂酸40%、脂肪71
20チ、不ケン化物20チ、脂肪酸エステル20%であ
ったため両者の分析値が似ているので本発明においては
上記組成のワイヤー付着ピッチをエタノールに加温溶解
した後、濾過して供試ピッチ溶液とした。
(Pitch composition) Mr. Burk, JM is Non-mNon-m1cro
biolo deposit problems and
thsir s)'stematic control
l-8outhernpulp Paper Mfr
42 (12): 19-21 (Dsc1979)
In the colloidal pitch wire 40-50 tresin acid, 15
It has been reported that ~20% of the fatty acid and styrene residue consists of steryl esters, di- and triglycerides, and the pitch attached to the paper mill wire used in the examples of the present invention is As a result of analysis of the ethanol extracted product, it was found that 40% resin acid and 71% fat.
Since the analysis values of both were similar because they contained 20% of unsaponifiable matter, 20% of unsaponifiable matter, and 20% of fatty acid ester, in the present invention, the wire-attached pitch with the above composition was dissolved in ethanol by heating, and then filtered to obtain the test pitch. It was made into a solution.

実施例1 よく洗浄されたフェルト10 cm X 35 tyn
を内張シしだILのビーカーに、必要量のPVAを溶解
した水溶液490dを入れ、50℃に加温し、回転速度
98 rpmで、後記供試ピッチのアルコール液を添加
する。次いで、これに後記硫酸ノ(ンド10me (液
が20 ppmのアルミニウム儂度を示すようにする)
を添加する。更に1時間攪拌をつづけた後、フェルトを
取出し、付着したピッチをアルコ−にベンゼン(1:2
容積)液で抽出し、添加ピッチ量に対するピッチの付着
率を求める。なお、本発明のピッチ分散剤無添加(グラ
/クチスト)の付着率は85.0チでちった。以下の式
で付着率よシ付着防止率を求める。
Example 1 Well-washed felt 10 cm x 35 tyn
Pour 490 d of an aqueous solution in which the required amount of PVA is dissolved into a beaker lined with a sheet of ice, heat it to 50° C., and add the alcohol solution of the sample pitch described below at a rotation speed of 98 rpm. Next, sulfuric acid (10 me) as described below was added to this (so that the solution showed an aluminum strength of 20 ppm).
Add. After stirring for another hour, the felt was taken out and the attached pitch was mixed with alcohol and benzene (1:2
Volume) Extract with liquid and determine the pitch adhesion rate relative to the amount of pitch added. Incidentally, the adhesion rate of the present invention without the addition of pitch dispersant (GRA/CUTIST) was 85.0 inches. Calculate the adhesion rate and the adhesion prevention rate using the following formula.

A。A.

AX:1%のピッチ分散剤の添加時のピッチ付着率Ao
:ピッチ分散剤無添加のときのピッチ付着率なお、本実
施例においては、付着防止率が80チを示すPVAの添
加率(対供試ピッチ)をもってPvAの分散能指数とし
た。言い換えると、該指数が小さいほどピッチ分散剤と
して優れたものであると言える。また実施例に用いられ
た供試ピッチ及び硫酸バンド水溶液は以下の通シである
AX: Pitch adhesion rate Ao when adding 1% pitch dispersant
: Pitch adhesion rate when no pitch dispersant is added. In this example, the PVA addition rate (relative to the sample pitch) exhibiting an adhesion prevention rate of 80 inches was taken as the PvA dispersion ability index. In other words, it can be said that the smaller the index, the better the pitch dispersant. The sample pitch and sulfuric acid band aqueous solution used in the examples are as follows.

口供試ピッチ: 某#i紙工場のワイヤー付着ピップをエタノールに加温
溶解して不溶部分を戸別後、エタノールを補充して1〇
−中KO,645Fの有効成分を含むようにした。
Test pitch: A wire-attached pip from a certain #i paper factory was heated and dissolved in ethanol, and the insoluble portion was distributed door to door, and then ethanol was replenished to contain the active ingredient of 10-middle KO, 645F.

O硫酸バンド水溶液: 112のA4 (804)!・13〜14 HzOを水
に溶解して1000 rstとした、10艷の水溶液は
0.01rのAtを含有。
O sulfate band aqueous solution: 112 A4 (804)!・A 10-meter aqueous solution of 1000 rst by dissolving 13-14 HzO in water contains 0.01 r of At.

実施例1で用いたピッチ分散剤は、A12のPVA[粘
rw:a 〜9cpa(ヘプラー粘反計、4%水溶液2
0℃)、けん化反(モルチ)ニア1.O〜75.0)を
、供試ピッチに対しuO14,2,1,0,4,0,2
(吻の種々の添加濃度にて試験を行い、前記付着率及び
付着防止率を求めた。その結果を第1表に示す。
The pitch dispersant used in Example 1 was A12 PVA [viscosity rw: a ~9 cpa (Hepler viscometer, 4% aqueous solution 2
0°C), saponified anti(moltinia) 1. O~75.0) for the test pitch uO14,2,1,0,4,0,2
(Tests were conducted at various concentrations of the proboscis to determine the adhesion rate and adhesion prevention rate. The results are shown in Table 1.

第1表 得られた結果から、片対数のグラフ用紙の対数表示側を
011ibとしてPVAの添加率、縦軸には付着防止率
をとった。その結果を第1図に示す。
From the results obtained in Table 1, the addition rate of PVA was taken as 011ib on the logarithmic side of the semi-logarithmic graph paper, and the adhesion prevention rate was taken on the vertical axis. The results are shown in FIG.

前記6点のプロットしたデーターより滑らかな曲線を引
き、付着防止率80%のときのPVAの添加率をPVA
の分散能指数とした。
Draw a smooth curve from the data plotted at the six points above, and calculate the PVA addition rate when the adhesion prevention rate is 80%.
was used as the dispersion power index.

ム12のPvAの分散能指数9.64 実施例2〜11及び比較例1〜3 PvAf)s類を変えた以外は、実施例1と同様にして
それぞれの分散能指数を求めた。その結果を実施例1と
合わせて第2表に示す。
Dispersion power index of PvA of Mu 12: 9.64 Examples 2 to 11 and Comparative Examples 1 to 3 The dispersion power index was determined in the same manner as in Example 1 except that PvAf)s was changed. The results are shown in Table 2 together with Example 1.

なお、比較例1〜4に用いたPVAは供試ピッチに対し
て60.1014.2(イ)の添加濃度にて試験を行っ
たが、比較例1〜3は、付着率がほぼ80%を越えてお
シ、比較例4に至っては水に溶けないため、ピッチ分散
能が実質的に無いので分散能指数をωとした。
In addition, the PVA used in Comparative Examples 1 to 4 was tested at an additive concentration of 60.1014.2 (a) to the sample pitch, but in Comparative Examples 1 to 3, the adhesion rate was approximately 80%. However, since Comparative Example 4 does not dissolve in water, it has substantially no pitch dispersion ability, so the dispersion ability index was set as ω.

第 2 表 )I:重合度1500以上 M:   I   1000〜1500L:   # 
 1000以下 以上の結果からtllJらかなように、けん化度が約9
0をこえるか、約40より小さいPVAは実質的にピッ
チ分散剤としての効果はなく、70〜80になると非常
に優れたピッチ分散能を示す。
Table 2) I: Degree of polymerization 1500 or more M: I 1000-1500L: #
From the results below 1000, it is clear that the degree of saponification is about 9.
PVA greater than 0 or less than about 40 has virtually no effect as a pitch dispersant, while PVA of 70 to 80 exhibits very good pitch dispersion ability.

e→ 発明の効果 特定の範囲のけん化度を有する水溶性のPVAを有効成
分とした本発明のピッチ分散剤は、工程水の回収率を高
くしたクローズ化と言った悪条件の抄紙工程でも優れた
ピッチ分散効果を有しておシ、工程管理が容易になると
ともに1他のピッチ分散剤と比較した場合、経済的にも
安価な優れたものである。
e→ Effects of the invention The pitch dispersant of the present invention, which contains water-soluble PVA with a specific range of saponification as an active ingredient, is excellent even in papermaking processes under adverse conditions such as closed papermaking with a high recovery rate of process water. It has excellent pitch dispersing effects, facilitates process control, and is economically inexpensive when compared to other pitch dispersants.

【図面の簡単な説明】[Brief explanation of the drawing]

!1図は、実施例1における本発明のピッチ分散剤の分
散能指数を示す片対数グラフで2らる。 し・−( 第1図 こ°フチ今胃文鷹ジの鱗ト乃ロ学(童1ヒ゛ッテ)手続
補正書 昭和59年9月10日 2、発明の名称 ピッチ分散剤 3、補正をする者 事件との関係   特許出願人 住 所  大阪市東淀用区東淡M2丁目10番15号名
 称   株式会社 片山化学工業研究所代表者片山和
夫 4、代理人 〒530 住 所  大阪市北区西天満5丁目1−3クォーター・
ワンビル5、補正命令の日付   自 発 補正の内容 1、明IIII書第4頁第12行目の「  とじて提案
している。]を「−として提案している( U S P
  3081219)。」に訂正する。 2、同書第5頁最終行の「いうのは、部分けん化物であ
る  」を「いうのは、ポリビニルアルコール試験方法
J I S K  6726−1977に記載するけん
化度であって部分けん化物である  jに訂正する。 3、同店第6頁第2行目の「得られる値のことである。 」を「得られる値に相当する。」に訂正する。 4、同書同頁下から第4行目の「モル%のものまで認め
られる、」を「モル%のものまで認められ、けん化度が
約40モル%以下になると実質的に水に不溶となり使用
に供し得ない、」に訂正する。 5、同店第8頁第7行目(1) r 0001〜0.2
1ffi%Jを1 o、ooi〜0.2重量%」に訂正
する。 6、同書同頁第12〜14行目の「また、この発明の・
・・・・・できる。」を「また、この発明の有効成分で
あるPVAは、適当な濃度となるように水に溶解して使
用できる。」に訂正する。
! Figure 1 is a semi-logarithmic graph showing the dispersibility index of the pitch dispersant of the present invention in Example 1. (Fig. 1) Written amendment to the procedures for Futaka Buntakaji Imazu (Children 1 Hitte) September 10, 1980 2. Name of the invention Pitch dispersant 3. Person making the amendment Relationship to the incident Patent applicant Address: 10-15 Higashidan M2-chome, Higashiyodoyo-ku, Osaka Name: Kazuo Katayama 4, representative of Katayama Chemical Industry Research Institute Co., Ltd. Address: 530 Nishitenma 5-chome, Kita-ku, Osaka 1-3 quarters
One Bill 5, Date of amendment order Voluntary Contents of amendment 1, Mei III, page 4, line 12, ``proposed as a closure.'' was changed to ``proposed as - (U.S.P.
3081219). ” is corrected. 2. In the last line of page 5 of the same book, "it means a partially saponified product" is replaced with "it means a partially saponified product, which is the degree of saponification described in the polyvinyl alcohol test method JIS K 6726-1977." Correct to j. 3. In the second line of page 6 of the same store, ``It refers to the value that can be obtained.'' is corrected to ``corresponds to the value that can be obtained.'' 4. In the fourth line from the bottom of the same page of the same book, ``It is acceptable up to mol %'' is changed to ``It is accepted up to mol %, and when the degree of saponification is about 40 mol % or less, it becomes substantially insoluble in water and is used. "It cannot be submitted to the public." 5. Same store page 8 line 7 (1) r 0001~0.2
Correct 1ffi%J to 1o,ooi~0.2% by weight. 6. “Also, this invention...
·····can. '' should be corrected to ``PVA, which is the active ingredient of this invention, can be used by dissolving it in water to an appropriate concentration.''

Claims (1)

【特許請求の範囲】 1、式( I ): ▲数式、化学式、表等があります▼( I ) で表わされる構成単位と、 式(II): ▲数式、化学式、表等があります▼(II) で表わされる構成単位からなり、式( I )で表わされ
る構成単位が40〜90モル%、式(II)で表わされる
構成単位が60〜10モル%である水溶性のポリビニル
アルコールを有効成分とするピッチ分散剤。 2、式( I )で表わされる構成単位を70〜80モル
%含む特許請求の範囲第1項記載の分散剤。
[Claims] 1. Formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼The structural unit represented by (I) and Formula (II): ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II ), the active ingredient is water-soluble polyvinyl alcohol containing 40 to 90 mol% of the constitutional unit represented by formula (I) and 60 to 10 mol% of the constitutional unit represented by formula (II). pitch dispersant. 2. The dispersant according to claim 1, which contains 70 to 80 mol% of the structural unit represented by formula (I).
JP17428484A 1984-08-22 1984-08-22 Pitch dispersant Granted JPS6155294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17428484A JPS6155294A (en) 1984-08-22 1984-08-22 Pitch dispersant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17428484A JPS6155294A (en) 1984-08-22 1984-08-22 Pitch dispersant

Publications (2)

Publication Number Publication Date
JPS6155294A true JPS6155294A (en) 1986-03-19
JPH0214479B2 JPH0214479B2 (en) 1990-04-09

Family

ID=15975975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17428484A Granted JPS6155294A (en) 1984-08-22 1984-08-22 Pitch dispersant

Country Status (1)

Country Link
JP (1) JPS6155294A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252615A2 (en) * 1986-07-02 1988-01-13 Betz Europe, Inc. Process for controlling pitch deposition from pulp in papermaking systems
US4765867A (en) * 1986-07-02 1988-08-23 Betz Laboratories, Inc. Pitch control process utilizing quaternized polyamine ionene polymer
US4964952A (en) * 1987-05-01 1990-10-23 W. R. Grace & Co.-Conn. Method of controlling pitch using a cationically modified tannin
US4995944A (en) * 1988-09-16 1991-02-26 Dearborn Chemical Company Ltd. Controlling deposits on paper machine felts using cationic polymer and cationic surfactant mixture
US5223097A (en) * 1986-01-09 1993-06-29 W. R. Grace Ab Method for controlling pitch on a paper-making machine
US5626720A (en) * 1986-01-09 1997-05-06 W.R. Grace & Co.-Conn. Method for controlling pitch on a papermaking machine
JP2005350807A (en) * 2004-06-10 2005-12-22 Nichiyu Solution Inc Pitch control agent
JP2006328560A (en) * 2005-05-23 2006-12-07 Nichiyu Solution Inc Method for producing paper
KR20160099731A (en) 2014-03-11 2016-08-22 쿠리타 고교 가부시키가이샤 Method for producing paper, and pitch removal agent
JP2020180386A (en) * 2019-04-23 2020-11-05 油化産業株式会社 Paper making agent composition and paper making method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223097A (en) * 1986-01-09 1993-06-29 W. R. Grace Ab Method for controlling pitch on a paper-making machine
US5626720A (en) * 1986-01-09 1997-05-06 W.R. Grace & Co.-Conn. Method for controlling pitch on a papermaking machine
EP0252615A2 (en) * 1986-07-02 1988-01-13 Betz Europe, Inc. Process for controlling pitch deposition from pulp in papermaking systems
US4765867A (en) * 1986-07-02 1988-08-23 Betz Laboratories, Inc. Pitch control process utilizing quaternized polyamine ionene polymer
US4964952A (en) * 1987-05-01 1990-10-23 W. R. Grace & Co.-Conn. Method of controlling pitch using a cationically modified tannin
US4995944A (en) * 1988-09-16 1991-02-26 Dearborn Chemical Company Ltd. Controlling deposits on paper machine felts using cationic polymer and cationic surfactant mixture
JP2005350807A (en) * 2004-06-10 2005-12-22 Nichiyu Solution Inc Pitch control agent
JP4594656B2 (en) * 2004-06-10 2010-12-08 油化産業株式会社 Pitch control agent
JP2006328560A (en) * 2005-05-23 2006-12-07 Nichiyu Solution Inc Method for producing paper
KR20160099731A (en) 2014-03-11 2016-08-22 쿠리타 고교 가부시키가이샤 Method for producing paper, and pitch removal agent
EP3118372A4 (en) * 2014-03-11 2017-11-29 Kurita Water Industries Ltd. Method for producing paper, and pitch removal agent
US10370794B2 (en) 2014-03-11 2019-08-06 Kurita Water Industries Ltd. Method for producing paper, and pitch removal agent
JP2020180386A (en) * 2019-04-23 2020-11-05 油化産業株式会社 Paper making agent composition and paper making method

Also Published As

Publication number Publication date
JPH0214479B2 (en) 1990-04-09

Similar Documents

Publication Publication Date Title
US4673704A (en) Aqueous polymer dispersions
EP2021422B1 (en) A process for forming filled bearings from fluoropolymer dispersions stabilized with anionic polyelectrolyte dispersing agents
Chakraborty et al. Reinforcing potential of wood pulp-derived microfibres in a PVA matrix
JPS6155294A (en) Pitch dispersant
FI58507C (en) FOER LIMNING AV PAPPER AVSETT HARTSLIMPREPARAT I FORM AV EN STABIL VATTENSUSPENSION OCH FOERFARANDE FOER DESS FRAMSTAELLNING
DE69928899T2 (en) Preparation of sulfone-containing fluorinated polymer solutions
EP0136506B1 (en) Photographic silver halide recording material
JP2015157955A (en) polyvinyl alcohol film
EP0137728B1 (en) Water-in-oil emulsions having improved low temperature properties
DE2610021A1 (en) METHOD OF PRODUCING A VINYL CHLORIDE RESIN
EP0062906A2 (en) Aqueous polyvinyl ester dispersion, process for its preparation and its use
DE69220423T2 (en) Polyester blend, process for its manufacture and film formed therefrom
Yuki et al. Physical properties of acrylic copolymer emulsions using poly (vinyl alcohol) as a protective colloid in comparison with those using surfactants
DE2934086A1 (en) EMULSION POLYMERISAT WITH THICKENING EFFECT IN THE ACID AREA
JPH0317955B2 (en)
DE3132890A1 (en) METHOD FOR PRODUCING POLYMERS AND COPOLYMERS OF VINYL CHLORIDE BY SUSPENSION POLYMERIZATION AND USE FOR THE USE AS LOW VISCOSITY IN THE PLASTISOL PROCESSING
DE1694669A1 (en) Polymer systems with added extenders
JP5560761B2 (en) Method for producing polyvinyl alcohol / water mixture
IE43835B1 (en) Production of dispersions of polyvinyl acetate
CA2093198A1 (en) Poly (vinyl alcohol) fluidized polymer suspensions
CN111363071B (en) Preparation method of graphene/nano silicon dioxide/polyvinyl chloride resin
DE68910639T2 (en) METHOD FOR PRODUCING PAPER AND PAPERBOARD.
Smallwood Vinyl chloride suspension polymerisation and the control of polymer properties
JPH0521935B2 (en)
Schott Bentonite-Cellulose Systems: Flow Behavior of Mixed Dispersions and Mechanical Properties of Composite Films