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JPH0450434B2 - - Google Patents
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JPH0450434B2 - - Google Patents

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Publication number
JPH0450434B2
JPH0450434B2 JP56013282A JP1328281A JPH0450434B2 JP H0450434 B2 JPH0450434 B2 JP H0450434B2 JP 56013282 A JP56013282 A JP 56013282A JP 1328281 A JP1328281 A JP 1328281A JP H0450434 B2 JPH0450434 B2 JP H0450434B2
Authority
JP
Japan
Prior art keywords
chloride
pvac
cationized
binder
inorganic
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 - Lifetime
Application number
JP56013282A
Other languages
Japanese (ja)
Other versions
JPS57128298A (en
Inventor
Itsuyoshi Morimoto
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.)
Mitsubishi Chemical Corp
Original Assignee
Nippon Synthetic Chemical Industry Co Ltd
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 Nippon Synthetic Chemical Industry Co Ltd filed Critical Nippon Synthetic Chemical Industry Co Ltd
Priority to JP1328281A priority Critical patent/JPS57128298A/en
Publication of JPS57128298A publication Critical patent/JPS57128298A/en
Publication of JPH0450434B2 publication Critical patent/JPH0450434B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】 本発明は特定のカチオン基をいずれか1種含む
ポリビニルエステル系樹脂(以後カチオン化
PVAc系樹脂と略記する)をバインダーとした無
機繊維板を製造することに関する。 石綿、ロツクウール、セラミツクフアイバー等
の無機繊維を主材とした板状物のバインダーとし
て、合成ゴムラテツクス、ポリビニルアルコー
ル、澱粉及びその誘導体が使用されている。 しかしながらこれらのバインダーを使用した無
機繊維板は、機械的強度、耐水性、耐炎性、難燃
性のいずれかに欠点があり満足すべきものではな
い。従つてこれらのすべての特性に優れた無機繊
維板の提供が望まれていた。 本発明者らはこれに応えるべく鋭意検討を重ね
たところ、特定のカチオン基をいずれか1種含む
ポリビニルエステル系樹脂(カチオン化PVAc系
樹脂)を無機繊維分散液に添加し抄造することに
よつて、優れた無機繊維板が得られることを見い
出し、本発明を完成するに至つた。 本発明によれば以下の様な顕著な効果が得られ
る。 1カチオン化PVAc系樹脂の無機繊維への定着
性が非常に優れているために、廃水のCOD負荷
が軽減し、経済性向上及び公害忘止に寄与する、
2無機繊維間の接着力が格段に優れているため、
繊維板の曲げ強度、なかんずく湿潤時の曲げ強度
が大きく、多湿環境下でのタワミ発生は全くな
い、3澱粉を併用しても澱粉の欠点である定着性
が向上する、4微細無機繊維の凝集性が優れてい
るため、歩留りが向上する、5系のPHに無機繊
維板の諸性質が左右されない。 本発明におけるカチオン化PVAc系樹脂として
は、 一般式 (但し式中R1はアルキレン又はヒドロキシア
ルキレン、R2は水素又はアルキル、R3とR4はア
ルキル、Xは無機又は有機アニオンを表す)で表
されるカチオン基を与えることが出来る化合物、
即ちハロゲン置換アルキルトリアルキルアンモニ
ウムクロライドやハロゲン置換アルキルジアルキ
ルアミン等とポリビニルアルコール(PVA)と
の反応物の再酢化によつて得られる。該化合物を
例示すると、3−クロロ−2−ヒドロキシプロピ
ルトリメチルアンモニウムクロライド、2−クロ
ロエチルトリメチルアンモニウムクロライド、3
−クロロプロピルトリメチルアンモニウムクロラ
イド、2−クロロ−2−ヒドロキシエチルトリメ
チルアンモニウムクロライド、2−クロロエチル
ジメチルアミン、3−クロロ−2−ヒドロキシジ
メチルアミン、などが挙げられる。 PVAと該化合物との反応はPVA中の水酸基と
該化合物中のアルキル基に結合したハロゲンとが
脱ハロゲン化水素反応をおこすことによつて進行
し、(a)で示されるカチオン基成分が樹脂中に導入
されるわけである。又再酢化に当たつては樹脂中
に残存する水酸基がない様にすることが必要であ
る。 更に具体的に該製造方法を例示すると、まず、
PVAをアルコール溶媒でスラリー状にし、アル
カリ触媒を添加し30〜50℃で一定時間反応し、
PVAの水酸基の水素を金属で置換する(アルコ
ラート化反応)。次に、前記のハロゲン置換アル
キルトリアルキルアンモウムクロライドや2−ク
ロロエチルジメチルアミン等のカチオン基を有す
る化合物を加え40〜50℃で一定時間反応する(カ
チオン化反応)。得られたカチオン化PVAにアセ
チル化液(無水酢酸/ピリジン/酢酸混合液)を
加え90〜100℃で一定時間反応させ、目的とする
カチオン化PVAc系樹脂が得られるものである。 カチオン基(b)として一般式 (但し式中R1はアルキレン又はヒドロキシア
ルキレン、R2とR5は水素又はアルキル、R3とR4
はアルキル、Xは無機又は有機アニオン、Aはア
ミド窒素又は酸素を表す)で表されるカチオン基
を有するポリビニルエステル系樹脂は、かかるカ
チオン基を与えることが出来るアクリル系化合物
とビニルエステルなかんずく酢酸ビニルとを共重
合することによつて得られる。該アクリル系化合
物としては、N−アクリルアミドメチルトリメチ
ルアンモニウムクロライド、N−アクリルアミド
エチルトリメチルアンモニウムクロライド、N−
アクリルアミドプロピルリメチルアンモニウムク
ロライド、3−アクリルアミド−3−メチルブチ
ルトリメチルアンモニウムクロライド、2−アク
リロキシエチルトリメチルアンモニウムクロライ
ド、2−メタクリロキシエチルトリメチルアンモ
ニウムクロライド、2−ヒドロキシ−3−メタク
リロイルオキシプロピルトリメチルアンモニウム
クロライド、N−メチルジメチルアミノアクリル
アミド、ジエチルアミノエチルメタクリレート、
などがあげられる。 カチオン基(c)として一般式 (但し式中R2とR5は水素又はアルキル、R3
R4はアルキル、Xは無機又は有機アニオン、n
=1〜10を表す)で表されるカチオン基を有する
ポリビニルエステル系樹脂は、かかるカチオン基
を与えることが出来るアリル系化合物とビニルエ
ステルなかんずく酢酸ビニルとを共重合して得ら
れる。該アリル系化合物としては、アリルトリメ
チルアンモニウムクロライド、メタアリルトリメ
チルアンモニウムクロライド、3−ブテニルトリ
メチルアンモニウムクロライド、ジメチルアリル
アミン、ジメチルメタアリルアミン、などがあげ
られる。 カチオン基(d)として一般式 (但し式中R2とR5は水素又はアルキル、R3
アルキル、Xは無機又は有機アニオンを表す)で
表されるカチオン基を有するポリビニルエステル
系樹脂は、かかるカチオン基を与えることが出来
るジアリル系化合物とビニルエステルなかんずく
酢酸ビニルとを共重合することによつて得られ
る。該ジアリル系化合物としては、ジメチルジア
リルアンモニウムクロライド、ジエチルジアリル
アンモニウムクロライド、エチルジアリルアミ
ン、メチルジアリルアミン、などがあげられる。
共重合反応時にジアリルの部分が閉環反応して式
(d)で示される構造となる。 また前記化合物とビニルエステル(酢酸ビニ
ル、プロピオン酸ビニル等が代表的に挙げられ
る)とを共重合する際には、ビニルエステルのほ
かに他の共重合性単量体を少量併用しうる。 かかる前記一般式(b)、(c)、(d)で表されるカチオ
ン基を含むカチオン化PVAc系樹脂の製造方法は
塊状重合、溶液重合、懸濁重合、乳化重合のいず
れも実施できるが、通常は溶液重合が実施され
る。まず、低級アルコール溶媒に酢酸ビニルと前
記のカチオン基(b)又は(c)、(d)を有する化合物を加
え、これにアゾビスイソブチロニトリル、過過酸
化ベンゾイル等の重合開始剤を添加後、通常50℃
〜沸点の範囲の重合反応温度で反応させ、更に残
りのカチオン基含有化合物を適宜添加して反応さ
せるなどの方法が挙げられる。 本発明における前記一般式(a)、(b)、(c)、(d)で表
されるカチオン基をいずれか1種含むカチオン化
PVAc系樹脂のうち、一般式(a)で表されるカチオ
ン基を含むカチオン化PVAc系樹脂は、前述のよ
うに反応に苛酷な条件を必要とし、導入されるカ
チオン基量も限度があり且つ少ない。これに対し
て一般式(b)、(c)、(d)で表されるカチオン基を含む
カチオン化PVAc系樹脂は、前記した如くビニル
エステルなかんずく酢酸ビニルと特定の化合物と
の共重によつて得られるものであるから、容易に
しかも導入されるカチオン基量も多いものが得ら
れる。従つて一般式(a)で表されるカチオン基を含
むカチオン化PVAc系樹脂よりも一般式(b)、、
(d)で表されるカチオン基を含むカチオン化PVAc
系樹脂の方が好適であつてその使用が望まれる。 本発明におけるカチオン化PVAc系樹脂のカチ
オン基含量は1〜20モル%、好ましくは2〜10モ
ル%の範囲が好適であり、1モル%未満では前記
の効果に乏しくかつ水難溶性となり、20モル%を
越えると得られた無機繊維板の吸湿性が高くふな
る傾向が認められ好ましくない。 該カチオン化PVAc系樹脂の無機繊維板分散液
に対する添加量は、原料繊維の種類、カチオン基
の種類、カチオン基含有量等によつて異なるが、
概略原料繊維に対して0.2〜10重量%の範囲から
適量を選択して用いることが望ましい。 本発明においては一般式(a)、(b)、(c)、(d)で表さ
れるカチオン基をいずれか1種含むカチオン化
PVAc系樹脂を各々単独又は2種以上併用しうる
ことは言うに及ばず、従来バインダーとして使用
されているデンプン、デンプン誘導体、ポリアク
リルアミド、ポリビニルアルコール等を少量添加
して用いるとか、これら従来バインダーに本発明
のカチオン化PVAc系樹脂を少量添加して用いる
など種々の使用方法を採りうる。 次に実施例によつて本発明を具体的に説明す
る。 尚、例中「部」、「%」とあるのは特にことわりの
ない限り重量基準である。 実施例 1 撹拌機付フラスコにポリビニルアルコール(平
均重合度1700、ケン化度99モル%)粉体100gと
イソプロピルアルコール400gを仕込み、40℃に
昇温し撹拌しながら20%の水酸化ナトリウム水溶
液を755g添加後、4時間撹拌した。 得られたスラリーを固液分離し、該粉体と3−
クロロ−2−ヒドロキシプロピルトリメチルアン
モニウムクロライド85.3gを、ニーダーを用い、
50℃で7時間撹拌し、メタノール洗浄後、乾燥
し、粉体を得た。 該粉体10部に対してアセチル化液(無水酢酸10
部、ピリジン1部、酢酸10部の混合液)を150部
の割合で加え、90℃で12時間撹拌し、得られたペ
ーストを常法に従い洗浄し、カチオン化度(カチ
オン化PVAc系樹脂中のカチオン基量をモル%で
表示したもの)3.2モル%のカチオン化PVAcを
得た。かかるカチオン化PVAcをバインダーAと
する。 鉱物質繊維としてロツクウールを使用し、水中
に分散撹拌後、バインダーAの水溶液を所定量添
加する。これを湿式抄紙装置にて抄造し、含水率
約55%のウエツトマツトを形成し、これを1Kg/
cm2のゲージ圧で圧着した後、温度160℃の熱プレ
ス中で2時間乾燥して厚さ9mmの繊維板を成型し
た。この成型板の密度、曲げ強度、灼熱減量、耐
水性について測定した。結果を第1表に示す。 実施例 2〜5 撹拌機付フラスコに酢酸ビニル500g、メタノ
ール75g、アリルトリメチルアンモニウムクロラ
イド1.4gを仕込み、撹拌しながら系内を窒素置
換した後、60℃に昇温した。重合開始剤としてア
ゾビスイソブチロニトリル3.5%メタノール溶液
を52g添加後、5時間20分の間にアリルトリメチ
ルアンモニウムクロライド5.2gとメタノール57
gを適宜滴下した。重合反応終了後、減圧下に反
応液中にメタノール蒸気を吹き込み未反応の酢酸
ビニル単量体を追い出し、カチオン化度2モル%
のカチオン化PVAcを得た。これをバインダーB
とする。 同様にして酢酸ビニルとN−アクリルアミドプ
ロピル−3−トリメチルアンモニウムクロライド
を共重合してカチオン化度9.2モル%のカチオン
化PVAcを得た。これをバインダーCとする。 同様にして酢酸ビニルとジメチルジアリルアン
モニウムクロライドとを共重合してカチオン化度
7.3モル%のカチオン化PVAcを得た。これをバ
インダーDとする。 同様にして酢酸ビニルとジメチルジアリルアン
モニウムクロライドとN−アクリルアミドエチル
トリメチルアンモニウムクロライドとを共重合し
てカチオン化度4.2モル%のカチオン化PVAcを
得た。これをバインダーEとする。 実施例2では実施例1のバインダーAに替えて
バインダーBを、実施例3ではバインダーCを、
実施例4ではバインダーDを、実施例5ではバイ
ンダーEを用い、他は実施例1と同様にして繊維
板を得て、その諸特性を測定し、第1表に記載し
た。 対照例 1〜2 実施例1のバインダーAに替えて、市販のデン
プン(タピオカデンプン)を用いた場合を対照例
1、ポリビニルアルコール(重合度1700、ケン化
度99モル%)を用いた場合を対照例2とし、実施
例と同様にして繊維板を得て、その諸特性を第1
表に示した。 実施例 6〜7 バインダーA1部とタピオカデンプン7部(対
ロツクウール100部)をバインダーとして用いた
場合を実施例6とし、バインダーB1部とタピオ
カデンプン7部(対ロツクウール100部)をバイ
ンダーとした場合を実施例7として、他は実施例
1と同様にして成型板を得て、その諸特性を第1
表に示した。 【表】
Detailed Description of the Invention The present invention relates to a polyvinyl ester resin (hereinafter referred to as cationized resin) containing any one type of specific cationic group.
This invention relates to manufacturing an inorganic fiberboard using a binder of PVAc-based resin. Synthetic rubber latex, polyvinyl alcohol, starch, and their derivatives are used as binders for plate-like materials mainly made of inorganic fibers such as asbestos, rock wool, and ceramic fiber. However, inorganic fiberboards using these binders are unsatisfactory because they have drawbacks in mechanical strength, water resistance, flame resistance, and flame retardance. Therefore, it has been desired to provide an inorganic fiberboard that is excellent in all of these properties. In response to this, the present inventors have conducted extensive studies and found that a polyvinyl ester resin (cationized PVAc resin) containing any one type of specific cationic group is added to an inorganic fiber dispersion for papermaking. As a result, they discovered that an excellent inorganic fiberboard could be obtained and completed the present invention. According to the present invention, the following remarkable effects can be obtained. Monocationic PVAc resin has excellent adhesion to inorganic fibers, which reduces the COD load of wastewater and contributes to improving economic efficiency and eliminating pollution.
Because the adhesive strength between the two inorganic fibers is extremely superior,
The bending strength of the fiberboard, especially when wet, is high, and there is no sagging in humid environments. 3. Even when used in combination with starch, the fixation, which is a drawback of starch, is improved. 4. Agglomeration of fine inorganic fibers. The properties of the inorganic fiberboard are not affected by the pH of the 5 series, which improves the yield due to its excellent properties. The cationized PVAc resin in the present invention has the general formula (However, in the formula, R 1 is alkylene or hydroxyalkylene, R 2 is hydrogen or alkyl, R 3 and R 4 are alkyl, and X represents an inorganic or organic anion).
That is, it is obtained by reacetylation of a reaction product of halogen-substituted alkyltrialkylammonium chloride, halogen-substituted alkyl dialkylamine, etc. and polyvinyl alcohol (PVA). Examples of the compounds include 3-chloro-2-hydroxypropyltrimethylammonium chloride, 2-chloroethyltrimethylammonium chloride, 3
-chloropropyltrimethylammonium chloride, 2-chloro-2-hydroxyethyltrimethylammonium chloride, 2-chloroethyldimethylamine, 3-chloro-2-hydroxydimethylamine, and the like. The reaction between PVA and the compound proceeds by a dehydrohalogenation reaction between the hydroxyl group in PVA and the halogen bonded to the alkyl group in the compound, and the cationic group component shown in (a) is It will be introduced inside. Furthermore, during re-acetylation, it is necessary to ensure that there are no hydroxyl groups remaining in the resin. To further specifically illustrate the manufacturing method, first,
PVA is made into a slurry with an alcohol solvent, an alkali catalyst is added, and the reaction is carried out at 30-50℃ for a certain period of time.
Replace the hydrogen in the hydroxyl group of PVA with a metal (alcoholation reaction). Next, a compound having a cationic group such as the halogen-substituted alkyltrialkylammium chloride or 2-chloroethyldimethylamine is added and reacted at 40 to 50°C for a certain period of time (cationization reaction). An acetylation liquid (acetic anhydride/pyridine/acetic acid mixture) is added to the obtained cationized PVA and reacted at 90 to 100°C for a certain period of time to obtain the desired cationized PVAc-based resin. General formula for cationic group (b) (However, in the formula, R 1 is alkylene or hydroxyalkylene, R 2 and R 5 are hydrogen or alkyl, R 3 and R 4
is alkyl, X is an inorganic or organic anion, and A is an amide nitrogen or oxygen. It can be obtained by copolymerizing with. Examples of the acrylic compound include N-acrylamidomethyltrimethylammonium chloride, N-acrylamidoethyltrimethylammonium chloride, and N-acrylamidoethyltrimethylammonium chloride.
Acrylamidopropyllimethylammonium chloride, 3-acrylamido-3-methylbutyltrimethylammonium chloride, 2-acryloxyethyltrimethylammonium chloride, 2-methacryloxyethyltrimethylammonium chloride, 2-hydroxy-3-methacryloyloxypropyltrimethylammonium chloride, N-methyldimethylaminoacrylamide, diethylaminoethyl methacrylate,
etc. General formula for cationic group (c) (However, in the formula, R 2 and R 5 are hydrogen or alkyl, R 3 and
R 4 is alkyl, X is an inorganic or organic anion, n
A polyvinyl ester resin having a cationic group represented by (=1 to 10) is obtained by copolymerizing an allyl compound capable of providing such a cationic group and a vinyl ester, particularly vinyl acetate. Examples of the allyl compound include allyltrimethylammonium chloride, methalyltrimethylammonium chloride, 3-butenyltrimethylammonium chloride, dimethylallylamine, dimethylmethallylamine, and the like. General formula for cationic group (d) (However, in the formula, R 2 and R 5 are hydrogen or alkyl, R 3 is alkyl, and X represents an inorganic or organic anion.) A polyvinyl ester resin having a cationic group can provide such a cationic group. It is obtained by copolymerizing a diallyl compound and a vinyl ester, especially vinyl acetate. Examples of the diallyl compound include dimethyldiallylammonium chloride, diethyldiallylammonium chloride, ethyldiallylamine, methyldiallylamine, and the like.
During the copolymerization reaction, the diallyl part undergoes a ring-closing reaction, resulting in the formula
The structure is shown in (d). Further, when copolymerizing the above compound with a vinyl ester (typically vinyl acetate, vinyl propionate, etc.), a small amount of other copolymerizable monomers may be used in addition to the vinyl ester. The method for producing cationized PVAc-based resins containing cationic groups represented by the above general formulas (b), (c), and (d) can be carried out by any of bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization. , usually solution polymerization is carried out. First, vinyl acetate and the above-mentioned compound having a cationic group (b), (c), or (d) are added to a lower alcohol solvent, and a polymerization initiator such as azobisisobutyronitrile or benzoyl perperoxide is added to this. After that, usually 50℃
Examples of methods include reacting at a polymerization reaction temperature in the range of ~ boiling point, and further adding the remaining cationic group-containing compound as appropriate. Cationization containing any one of the cationic groups represented by the above general formulas (a), (b), (c), and (d) in the present invention
Among PVAc resins, cationized PVAc resins containing cationic groups represented by general formula (a) require harsh conditions for reaction as described above, and there is a limit to the amount of cationic groups that can be introduced. few. On the other hand, cationized PVAc resins containing cationic groups represented by general formulas (b), (c), and (d) are produced by copolymerizing vinyl esters, especially vinyl acetate, with specific compounds, as described above. Since it can be obtained easily, it is possible to easily introduce a large amount of cationic groups. Therefore, the cationized PVAc resin containing the cationic group represented by the general formula (a) is better than the general formula (b).
Cationized PVAc containing a cationic group represented by (d)
Based resins are more suitable and their use is desired. The cationic group content of the cationized PVAc resin in the present invention is preferably in the range of 1 to 20 mol%, preferably 2 to 10 mol%; if it is less than 1 mol%, the above-mentioned effects will be poor and the resin will be poorly soluble in water; %, the obtained inorganic fiberboard has high hygroscopicity and a tendency to swell, which is not preferable. The amount of the cationized PVAc-based resin added to the inorganic fiberboard dispersion varies depending on the type of raw fiber, the type of cationic group, the cationic group content, etc.
It is desirable to select an appropriate amount from the range of 0.2 to 10% by weight based on the raw material fiber. In the present invention, cationization containing any one of the cationic groups represented by the general formulas (a), (b), (c), and (d)
It goes without saying that PVAc-based resins can be used alone or in combination of two or more, but starch, starch derivatives, polyacrylamide, polyvinyl alcohol, etc., which are conventionally used as binders, can be added in small amounts, or used in combination with these conventional binders. Various methods can be used, such as adding a small amount of the cationized PVAc resin of the present invention. Next, the present invention will be specifically explained with reference to Examples. In the examples, "parts" and "%" are based on weight unless otherwise specified. Example 1 100 g of polyvinyl alcohol (average degree of polymerization 1700, degree of saponification 99 mol%) powder and 400 g of isopropyl alcohol were placed in a flask equipped with a stirrer, the temperature was raised to 40°C, and a 20% aqueous sodium hydroxide solution was added while stirring. After adding 755g, the mixture was stirred for 4 hours. The obtained slurry was separated into solid and liquid, and the powder and 3-
85.3 g of chloro-2-hydroxypropyltrimethylammonium chloride was added using a kneader.
The mixture was stirred at 50°C for 7 hours, washed with methanol, and dried to obtain a powder. Add acetylation liquid (10 parts of acetic anhydride to 10 parts of the powder)
1 part of pyridine, and 10 parts of acetic acid) were added at a ratio of 150 parts, stirred at 90°C for 12 hours, and the resulting paste was washed according to a conventional method. The amount of cationic groups (expressed in mol%) was 3.2 mol% of cationized PVAc. This cationized PVAc is referred to as binder A. Rock wool is used as the mineral fiber, and after dispersing and stirring in water, a predetermined amount of an aqueous solution of binder A is added. This is made into paper using a wet paper machine to form a wet mat with a moisture content of approximately 55%, and this is made into a wet mat with a moisture content of approximately 55%.
After crimping with a gauge pressure of cm 2 , it was dried in a hot press at a temperature of 160° C. for 2 hours to form a fiberboard with a thickness of 9 mm. The density, bending strength, loss on ignition, and water resistance of this molded plate were measured. The results are shown in Table 1. Examples 2 to 5 500 g of vinyl acetate, 75 g of methanol, and 1.4 g of allyltrimethylammonium chloride were placed in a flask equipped with a stirrer, and the system was purged with nitrogen while stirring, and then the temperature was raised to 60°C. After adding 52 g of 3.5% methanol solution of azobisisobutyronitrile as a polymerization initiator, 5.2 g of allyltrimethylammonium chloride and 57 g of methanol were added during 5 hours and 20 minutes.
g was added dropwise as appropriate. After the polymerization reaction is completed, methanol vapor is blown into the reaction solution under reduced pressure to drive out unreacted vinyl acetate monomer, resulting in a degree of cationization of 2 mol%.
Cationized PVAc was obtained. Binder B
shall be. In the same manner, vinyl acetate and N-acrylamidopropyl-3-trimethylammonium chloride were copolymerized to obtain cationized PVAc with a cationization degree of 9.2 mol%. This is called binder C. In the same manner, vinyl acetate and dimethyldiallylammonium chloride were copolymerized to obtain a degree of cationization.
7.3 mol% of cationized PVAc was obtained. This is called binder D. Similarly, vinyl acetate, dimethyldiallylammonium chloride, and N-acrylamidoethyltrimethylammonium chloride were copolymerized to obtain cationized PVAc with a degree of cationization of 4.2 mol%. This is called binder E. In Example 2, binder B was used instead of binder A in Example 1, and in Example 3, binder C was used.
In Example 4, Binder D was used, and in Example 5, Binder E was used to obtain a fiberboard in the same manner as in Example 1, and the various properties thereof were measured and are listed in Table 1. Control Examples 1 to 2 Control Example 1 is a case in which a commercially available starch (tapioca starch) is used instead of Binder A in Example 1, and a case in which polyvinyl alcohol (degree of polymerization 1700, degree of saponification 99 mol%) is used. As a control example 2, a fiberboard was obtained in the same manner as in the example, and its various properties were evaluated in the first example.
Shown in the table. Examples 6 to 7 Example 6 is a case in which 1 part of binder A and 7 parts of tapioca starch (based on 100 parts of rock wool) is used as a binder, and a case where 1 part of binder B and 7 parts of tapioca starch (based on 100 parts of rock wool) is used as a binder. As Example 7, a molded plate was obtained in the same manner as in Example 1, and its various characteristics were determined as in Example 1.
Shown in the table. 【table】

Claims (1)

【特許請求の範囲】 1 無機繊維板を製造する際に下記一般式 (但し式中R1はアルキレン又はヒドロキシア
ルキレン、R2とR5は水素又はアルキル、R3とR4
はアルキル、Xはアニオン、Aはアミド窒素又は
酸素を表す) で表されるカチオン基の群(a)、(b)、(c)、(d)から選
ばれたいずれか1種のカチオン基を含むポリビニ
ルエステル系樹脂を無機繊維分散液に添加するこ
とを特徴とする無機繊維板の製造法。
[Claims] 1. When manufacturing an inorganic fiberboard, the following general formula (However, in the formula, R 1 is alkylene or hydroxyalkylene, R 2 and R 5 are hydrogen or alkyl, R 3 and R 4
is alkyl, X is an anion, and A is amide nitrogen or oxygen. A method for producing an inorganic fiberboard, comprising adding a polyvinyl ester resin containing the following to an inorganic fiber dispersion.
JP1328281A 1981-01-31 1981-01-31 Production of inorganic fiberboard Granted JPS57128298A (en)

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JP1328281A JPS57128298A (en) 1981-01-31 1981-01-31 Production of inorganic fiberboard

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Application Number Priority Date Filing Date Title
JP1328281A JPS57128298A (en) 1981-01-31 1981-01-31 Production of inorganic fiberboard

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JPS57128298A JPS57128298A (en) 1982-08-09
JPH0450434B2 true JPH0450434B2 (en) 1992-08-14

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Country Link
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Publication number Priority date Publication date Assignee Title
DE102017205376A1 (en) 2017-03-30 2018-10-04 Robert Bosch Gmbh transducer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465789A (en) * 1977-11-07 1979-05-26 Dainippon Ink & Chem Inc Preparation of cationic aqueous dispersion composition for paper conversion
JPS5688413A (en) * 1979-12-19 1981-07-17 Kuraray Co Ltd Novel copolymer and preparation of same, and paper reinforcer primarily composed of same
JPS5614504A (en) * 1979-07-12 1981-02-12 Kuraray Co Ltd New water-soluble copolymer, production thereof and paper-strengthening agent consisting mainly of same

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