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JPH0567432B2 - - Google Patents

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Publication number
JPH0567432B2
JPH0567432B2 JP25597084A JP25597084A JPH0567432B2 JP H0567432 B2 JPH0567432 B2 JP H0567432B2 JP 25597084 A JP25597084 A JP 25597084A JP 25597084 A JP25597084 A JP 25597084A JP H0567432 B2 JPH0567432 B2 JP H0567432B2
Authority
JP
Japan
Prior art keywords
group
formula
cationic group
recording paper
inkjet recording
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
JP25597084A
Other languages
Japanese (ja)
Other versions
JPS61134291A (en
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 filed Critical
Priority to JP59255970A priority Critical patent/JPS61134291A/en
Publication of JPS61134291A publication Critical patent/JPS61134291A/en
Publication of JPH0567432B2 publication Critical patent/JPH0567432B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52Macromolecular coatings
    • B41M5/5245Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/33Synthetic macromolecular compounds
    • D21H17/34Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/36Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00Coated paper; Coating material
    • D21H19/36Coatings with pigments
    • D21H19/44Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/60Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Duplication Or Marking (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

A 産業上の利用分野 本発明はインクジエツト記録用紙に関し、特に
解像度が高く、高度に耐水性のある記録画像を形
成するインクジエツト記録用紙に関する。 B 従来の技術 インクジエツト記録方式は騒音が少いこと、カ
ラー化が容易であること、高速記録が可能である
こと等の理由から、フアクシミリ、各種プリンタ
ー等への応用が進められている。従来、インクジ
エツト記録方式に使用される被記録材としては通
常の紙が使用されてきた。しかし、記録の高速化
あるいは多色化などインクジエツト記録機の性能
向上に伴いインクジエツト記録用紙に対してもよ
り高度な特性が要求されてきている。すなわち第
1にインクの吸収速度が大きいこと、第2にイン
クドツトの径が必要以上に大きくならないこと、
第3にインクジエツト記録方式に用いられるイン
クが水溶性であるため記録画像の耐水性が低いと
いう欠点を改良すること等である。 これらの要求を満たすため、種々の検討がなさ
れているが、一般にインク吸収性のよいものはイ
ンクドツトが広がりやすいという傾向にあり、ま
た記録画像の耐水性も未だ実用レベルの要求に遠
くおよばないというのが現状である。 C 本発明が解決しようとする問題点 本発明の目的は、前記のような諸要求を満足さ
せ、特に解像度が高くかつ耐水性にすぐれた記録
画像を形成するインクジエツト記録用紙を提供す
ることにある。 D 問題点を解決する為の手段 本発明者は上記の問題点を解決すべく鋭意検討
の結果、塗工層中に、カチオン性基を有するポリ
ビニルアルコール系樹脂(以下ポリビニルアルコ
ールをPVAと略記する)を含有してなることを
特徴とするインクジエツト記録用紙が、特に解像
度が高く、かつ高度に耐水性のある記録画像を形
成するインクジエツト記録用紙であることを見出
し、本発明を完成するに到つたものである。 本発明に用いられるカチオン性基を有する
PVA系樹脂としてはカチオン性基としてアミン
あるいはアンモニウム基(環状、非環状および芳
香族を含む)を有しているものであればよく、具
体的には、例えば以下のような一般式()〜
()で表わされるカチオン性の単位を有する
PVA系樹脂が用いられる。
A. Field of Industrial Application The present invention relates to an inkjet recording paper, and particularly to an inkjet recording paper that forms recorded images with high resolution and high water resistance. B. Prior Art The inkjet recording method is being applied to facsimile machines, various printers, etc. because of its low noise, ease of colorization, and high-speed recording. Conventionally, ordinary paper has been used as the recording material used in the inkjet recording method. However, as the performance of inkjet recording machines improves, such as faster recording and multicolor recording, more advanced characteristics are required of inkjet recording paper. That is, firstly, the ink absorption speed is high, and secondly, the diameter of the ink dots does not become larger than necessary.
Thirdly, it is necessary to improve the disadvantage that the ink used in the inkjet recording method is water-soluble, so that the water resistance of the recorded image is low. Various studies have been carried out to meet these requirements, but in general, ink dots tend to spread more easily with products that have good ink absorption, and the water resistance of recorded images is still far from meeting the requirements for practical use. is the current situation. C Problems to be Solved by the Present Invention An object of the present invention is to provide an inkjet recording paper that satisfies the above-mentioned requirements and forms recorded images with particularly high resolution and excellent water resistance. . D. Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors found that a polyvinyl alcohol resin (hereinafter polyvinyl alcohol will be abbreviated as PVA) having a cationic group in the coating layer. ) has been found to be an inkjet recording paper that forms recorded images with particularly high resolution and high water resistance, and has completed the present invention. It is something. Contains a cationic group used in the present invention
The PVA-based resin may be one having an amine or ammonium group (including cyclic, acyclic, and aromatic) as a cationic group, and specifically, for example, the following general formulas () to
It has a cationic unit represented by ()
PVA resin is used.

【式】およびこの四級化物 ()[Formula] and its quaternized product ()

【式】およびこの四級化物 ()[Formula] and its quaternized product ()

【式】およびこの四 級化物 ()[Formula] and this four graded product ()

【式】およびこの四級化物 ()[Formula] and its quaternized product ()

【式】 () 〔ここでnは0〜3、mは1〜10、R1,R2
R6,R7,R8は水素原子またはメチル基、R3,R4
は低級アルキル基(置換基を含んでもよい)、X
はアンモニウム窒素と塩を形成する陰性の基、A
はアミンあるいはアンモニウム窒素原子と、()
式中のアミド基の窒素原子あるいは()式中の
酸素原子とを連結する基をそれぞれ示す。〕 上述のカチオン性基を有するPVA系樹脂の製
造法としては、ビニルエステルと以下のような一
般式()〜()、
[Formula] () [Here, n is 0 to 3, m is 1 to 10, R 1 , R 2 ,
R 6 , R 7 , R 8 are hydrogen atoms or methyl groups, R 3 , R 4
is a lower alkyl group (which may contain a substituent),
is a negative group that forms a salt with ammonium nitrogen, A
is an amine or ammonium nitrogen atom and ()
Each represents a group connecting the nitrogen atom of the amide group in the formula or the oxygen atom in the () formula. ] As a method for producing the above-mentioned PVA-based resin having a cationic group, vinyl ester and the following general formulas () to (),

【式】およびこの四級化 物 ()[Formula] and its quaternization thing ()

【式】およびこの四級化物 ()[Formula] and its quaternized product ()

【式】およびこの四 級化物 ()[Formula] and this four graded product ()

【式】およびこの四級化物 ()[Formula] and its quaternized product ()

【式】 () 〔ここでnは0〜3、mは1〜10、R1,R2
R6,R7,R8は水素原子またはメチル基、R3,R4
は低級アルキル基(置換基を含んでもよい)、X
はアンモニウム窒素と塩を形成する陰性の基、A
はアミンあるいはアンモニウム窒素原子と、()
式中のアミド基の窒素原子あるいは()式中の
酸素原子とを連結する基をそれぞれ示す。〕 で示される重合性単量体とをラジカル重合開始剤
の存在下に共重合させ、しかる後に該共重合体中
のビニルエステル単位を部分的にあるいは高度に
ケン化せしめる方法が挙げられる。 本方法において使用されるビニルエステルとし
ては、酢酸ビニル、プロピオン酸ビニル、ギ酸ビ
ニルが挙げられるが経済的にみて酢酸ビニルが好
ましい。 また、本方法において用いられるカチオン性基
を有する重合性単量体のうち()式で表わされ
る単量体の具体例としては、例えばN−(1,1
−ジメチル−3−ジメチルアミノプロピル)(メ
タ)アクリルアミド、N−(1,1−ジメチル−
3−ジメチルアミノブチル)(メタ)アクリルア
ミド、N−(1−メチル−1,3−ジフエニル−
3−ジエチルアミノプロピル)(メタ)アクリル
アミド、N−(3−ジメチルアミノプロピル)(メ
タ)アクリルアミド、N−(2−ジメチルアミノ
エチル)(メタ)アクリルアミド、N−(4−ジメ
チルアミノブチル)(メタ)アクリルアミド、お
よびこれらをハロゲン化アルキルとりわけ塩化メ
チルあるいは塩化エチル、またはジメチル硫酸、
p−トルエンスルホン酸メチル等の四級化剤で四
級化した単量体が挙げられる。 また()式で表わされる単量体の具体例とし
ては、例えば、N−ビニルイミダゾール、2−メ
チル−N−ビニルイミダゾールおよびそれらを上
述の四級化剤によつて四級化した単量体が挙げら
れる。 また()式で表わされる単量体の具体例とし
ては、例えば、ビニル−3−ジメチルアミノプロ
ピルエーテル、ビニル−2−ジメチルアミノエチ
ルエーテル、ビニル−4−ジメチルアミノブチル
エーテル、イソプロペニル−3−ジメチルアミノ
プロピルエーテル、イソプロペニル−2−ジメチ
ルアミノエチルエーテル、アリル−3−ジメチル
アミノプロピルエーテル、アリル−2−ジメチル
アミノエチルエーテル、アリル−4−ジメチルア
ミノブチルエーテルおよびそれらを上述の四級化
剤によつて四級化した単量体が挙げられる。 また()式で表わされる単量体の具体例とし
てはアリルジメチルアミン、メタアリルジメチル
アミン、3−ブテンジメチルアミンおよびそれら
を上述の四級化剤によつて四級化した単量体が挙
げられる。 更に()式で表わされる単量体の具体例とし
ては、例えば、ジメチルジアリルアンモニウムク
ロリド、ジエチルジアリルアンモニウムクロリド
などが挙げられる。 上述の()〜()式で表わされるカチオン
性基を有する単量体において工業的製造の容易性
あるいはインクジエツト記録用紙中に含有せしめ
た場合の耐水性の高度性の点で()、()また
は()式で表わされる単量体とりわけ()式
または()式で表わされる単量体が好ましく用
いられる。 また上述のカチオン性基を有する単量体とビニ
ルエステルとの共重合を実施する際には、これら
の他に他の共重合性単量体、例えば、エチレン、
プロピレン、スチレン、アルキルビニルエーテ
ル、バーサチツク酸ビニル、(メタ)アクリルア
ミド、(メタ)アクリル酸、無水マレイン酸、ク
ロトン酸、イタコン酸、フマル酸等の不飽和酸お
よびそのアルキルエステル、アルカリ塩等を少量
併用使用することもできる。 本発明において用いられるカチオン性基を有す
るPVA系樹脂中のカチオン性基の含有量として
はカチオン性基を有する単量体単位として0.01〜
10モル%、好ましくは0.05〜5モル%の範囲から
選ばれることが好ましい。またビニルエステル単
位のケン化度としては水溶性の範囲であればよ
く、カチオン性基を有する単量体単位の含有量に
よつても異なるが通常50〜100モル%、好ましく
は60〜100モル%の範囲から選ばれる。更に該変
性PVAの重合度としては特に制限はないが通常
50〜3000好ましくは100〜2500の範囲から選ばれ
る。 本発明においてカチオン性基を有するPVA系
樹脂をインクジエツト記録用紙の塗工層中に含有
せしめる方法としては、例えば公知の方法によつ
て抄紙したインクジエツト記録用紙にスプレーあ
るいはサイドプレスにより表面に塗布あるいは含
浸せしめる方法、あるいは公知のコート紙タイプ
のインクジエツト記録用紙を製造する際、該コー
イング塗料中に混合し、ブレード、エアナイフ、
ロールコーター等の塗工機により塗布する方法等
が挙げられる。 インクジエツト記録用紙の塗工層中への該カチ
オン性基含有PVA系樹脂の添加量としては通常
0.01〜10g/m2好ましくは0.05〜5g/m2が用い
られる。0.01g/m2未満の場合には解像度、耐水
性の向上効果がなく、10g/m2を超える場合には
イク吸収速度が低下する傾向があるため好ましく
ない。 上述の如く、本発明において用いられるカチオ
ン性基含有PVA系樹脂はあらゆるタイプのイン
クジエツト記録用紙に適用が可能であり、特にタ
ルク、カオリン、炭酸カルシウム、非膠質シリカ
粉末、微粉末状尿素ホルマリン樹脂填料等の各種
填料を有する記録用紙、あるいは非膠質シリカ粉
末、酸性白土、クレー、タルク、炭酸カルシウ
ム、けいそう土、酸化チタン、硫酸バリウム等の
白色顔料を塗工層として有する記録用紙等に適用
することによつて、解像度が高く、高度に耐水性
の記録画像を形成しうるインクジエツト記録用紙
を得ることができる。 尚、カチオン性基含有PVA系樹脂をインクジ
エツト記録用紙の塗工層中に含有せしめる際、ポ
リアクリルアミド、デンプン、カゼイン、アラビ
アゴム、カルボキシメチルセルロース、メチルセ
ルロース、通常のPVA、ポリアクリル酸ソーダ
等の水溶性樹脂、合成ゴムラテツクス等の合成樹
脂ラテツクス、分散螢光染料、PH調節剤、消泡
剤、潤滑剤、防腐剤、界面活性剤等各種添加剤を
併用して使用することもできる。 E 作用及び本発明の効果 本発明のインクジエツト記録用紙が、解像度が
高くかつ耐水性の良好な記録画像を形成しうる理
由については十分解明されているわけではない
が、次のように推定される。 すなわち、インクジエツト記録方式において用
いられる水性インク中の染料は一般にアニオン性
であり、本発明の記録用紙の塗工層中に含有せし
めるカチオン性基含有PVA系樹脂はアニオン性
化合物と著しく高い反応性を有するため、記録用
紙にインクが適用されると瞬間的に反応して、吸
収するとともにインクの広がりを抑制し、かつ耐
水性の化学結合体を形成するためであると推定さ
れる。 以下に実施例を挙げて本発明を更に詳しく説明
するが、本発明はこれによつて制限されるもので
はない。なお実施例中特にことわりのないかぎり
「%」および「部」は重量規準を表わす。 実施例 1 カチオン性基含有PVA系樹脂として酢酸ビニ
ルとトリメチル−3−(1−アクリルアミドプロ
ピル)アンモニウムクロリドとの共重合体をケン
化して得られる、カチオン性基を有する単量体単
位の含有量が3モル%で酢酸ビニル単位のケン化
度98.5モル%、重合度1750のものを使用して下記
組成に基づき塗工用組成物を作成した。 非膠質シリカ粉末 100部 カチオン性基含有PVA系樹脂 25部 水 500部 一方原紙としてはJIS p8122に基づくサイズ度
が30秒の一般上質紙(坪量65g/m2)を使用し、
この原紙上に上記塗工用組成物を乾燥塗工量で20
g/m2となるようにブレードコーターで塗布し、
乾燥してインクジエツト記録用紙を得た。この記
録用紙に対して下記4色のインクを用いてカラー
インクジエツト記録を行い、記録特性の評価を行
つた。 イエローインク(組成) C.I.アシツドイエロー23 2部 ジエチレングリコール 30部 水 70部 マゼンタインク(組成) C.I.アシツドレツド32 2部 ジエチレングリコール 30部 水 70部 シアンインク(組成) C.I.ダイレクトブルー86 2部 ジエチレングリコール 30部 水 70部 ブラツクインク(組成) C.I.ダイレクトブラツク19 2部 ジエチレングリコール 30部 水 70部 記録用紙の記録特性の評価結果を第1表に示
す。にじみ度は印字ドツト直径を実体顕微鏡で測
定し、インク滴径の何倍になつたかを示した。耐
水性は、被記録紙を流水中に3時間浸漬し、浸漬
後、マクベス濃度計を用いて測定した光学密度
(OD)を浸漬前のOD値と比較して示した。 実施例 2〜4 実施例1で用いられたカチオン変性PVAに替
えて次のような変性PVAを用いる以外は実施例
1と同様に行つた。評価結果を合せて第1表に示
す。 実施例2で用いたカチオン性基含有PVA系樹
脂:酢酸ビニルとトリメチル−3−(1−メタア
クリルアミドプロピル)アンモニウムクロリドと
の共重合体をケン化して得られるカチオン性基を
有する単量体単位の含有量が3モル%で酢酸ビニ
ル単位のケン化度98.5モル%、重合度550のPVA
系樹脂。 実施例3で用いたカチオン性基含有PVA系樹
脂:酢酸ビニルとトリメチル−3−(1−アクリ
ルアミド−1,1−ジメチルプロピル)アンモニ
ウムクロリドとの共重合体をケン化して得られる
カチオン性基を有する単量体単位の含有量が0.2
モル%で酢酸ビニル単位のケン化度98.5モル%、
重合度2000のPVA系樹脂。 実施例4で用いたカチオン性基含有PVA系樹
脂:酢酸ビニルとトリメチル−2−アリルオキシ
エチルアンモニウムクロリドとの共重合体をケン
化して得られるカチオン性基を有する単量体単位
の含有量が4モル%で酢酸ビニル単位のケン化度
88モル%、重合度550のPVA系樹脂。 実施例 5 実施例1で用いられたカチオン変性PVA25部
に替えてカチオン変性基含有PVA系樹脂として
酢酸ビニルとN−ビニル−2,3−ジメチルイミ
ダゾリニウムクロリドとの共重合体をケン化して
得られるイミダゾリニウム基の含有量が4モル%
で酢酸ビニル単位のケン化度98.5モル%、重合度
1750のPVA系樹脂の20部と通常のPVA(ケン化
度98.5モル%、重合度1750)20部とを併用して用
いる以外は実施例1と同様に行つた。結果を合せ
て第1表に示す。 実施例 6 実施例1で用いたカチオン性基含有PVA系樹
脂の6%水溶液をサイズプレスを用いてサイズ度
10秒の一般紙(坪量65g/m2)に乾燥重量として
2g/m2となるように塗布し記録用紙を得た。こ
の記録用紙を実施例1と同様にして評価した。結
果を合せて第1表に示す。 実施例 7〜8 実施例6で用いたカチオン性基含有PVA系樹
脂にかえて以下のPVA系樹脂を用いる以外は実
施例6と同様に行つた。結果を合せて第1表に示
す。 実施例7で用いたカチオン性基含有PVA系樹
脂:実施例3で用いたカチオン性基含有PVA系
樹脂。 実施例8で用いたカチオン性基含有PVA系樹
脂:実施例5で用いたカチオン性基含有PVA系
樹脂。 比較例 1 実施例1において用いられたカチオン性基含有
PVA系樹脂にかえてPVA(ケン化度98.5、重合度
1750)を用いる以外は実施例1と同様に行つた。
結果を合せて第1表に示す。 比較例 2 実施例1で用いられたカチオン変性PVA25部
と水500部に替えて該変性PVA150部と水1000部
を用いる以外は実施例1と同様に行つた。(この
場合、カチオン変性PVAの紙中への添加量は12
g/m2となる。)得られたインクジエツト記録用
紙はインク吸収速度が低いものであつた。 比較例 3 実施例6において用いられた一般紙をそのまま
用いる以外は実施例1と同様に行つた。記録特性
の評価結果を合せて第1表に示す。
[Formula] () [Here, n is 0 to 3, m is 1 to 10, R 1 , R 2 ,
R 6 , R 7 , R 8 are hydrogen atoms or methyl groups, R 3 , R 4
is a lower alkyl group (which may contain a substituent),
is a negative group that forms a salt with ammonium nitrogen, A
is an amine or ammonium nitrogen atom and ()
Each represents a group connecting the nitrogen atom of the amide group in the formula or the oxygen atom in the () formula. ] Examples include a method of copolymerizing the polymerizable monomer shown in the following in the presence of a radical polymerization initiator, and then partially or highly saponifying the vinyl ester units in the copolymer. Vinyl esters used in this method include vinyl acetate, vinyl propionate, and vinyl formate, but vinyl acetate is preferred from an economic standpoint. Further, among the polymerizable monomers having a cationic group used in this method, specific examples of the monomer represented by the formula () include, for example, N-(1,1
-dimethyl-3-dimethylaminopropyl)(meth)acrylamide, N-(1,1-dimethyl-
3-dimethylaminobutyl)(meth)acrylamide, N-(1-methyl-1,3-diphenyl-
3-diethylaminopropyl)(meth)acrylamide, N-(3-dimethylaminopropyl)(meth)acrylamide, N-(2-dimethylaminoethyl)(meth)acrylamide, N-(4-dimethylaminobutyl)(meth) acrylamide, and their alkyl halides, especially methyl or ethyl chloride, or dimethyl sulfate,
Examples include monomers quaternized with a quaternizing agent such as methyl p-toluenesulfonate. Further, specific examples of the monomer represented by the formula () include N-vinylimidazole, 2-methyl-N-vinylimidazole, and monomers obtained by quaternizing these with the above-mentioned quaternizing agent. can be mentioned. Specific examples of the monomer represented by the formula () include vinyl-3-dimethylaminopropyl ether, vinyl-2-dimethylaminoethyl ether, vinyl-4-dimethylaminobutyl ether, isopropenyl-3-dimethyl aminopropyl ether, isopropenyl-2-dimethylaminoethyl ether, allyl-3-dimethylaminopropyl ether, allyl-2-dimethylaminoethyl ether, allyl-4-dimethylaminobutyl ether and their use with the above-mentioned quaternizing agents. Examples include quaternized monomers. Specific examples of the monomer represented by the formula () include allyldimethylamine, methalyldimethylamine, 3-butenedimethylamine, and monomers obtained by quaternizing these with the above-mentioned quaternizing agent. It will be done. Furthermore, specific examples of the monomer represented by the formula () include dimethyldiallylammonium chloride, diethyldiallylammonium chloride, and the like. Among the monomers having a cationic group represented by the above formulas () to (), () and () are preferred in terms of ease of industrial production or high degree of water resistance when incorporated into inkjet recording paper. Monomers represented by formula () or () are preferably used, particularly monomers represented by formula () or (). In addition, when carrying out the copolymerization of the above-mentioned cationic group-containing monomer and vinyl ester, other copolymerizable monomers such as ethylene,
A small amount of unsaturated acids such as propylene, styrene, alkyl vinyl ether, vinyl versatate, (meth)acrylamide, (meth)acrylic acid, maleic anhydride, crotonic acid, itaconic acid, fumaric acid, their alkyl esters, alkali salts, etc. You can also use The content of cationic groups in the PVA resin having cationic groups used in the present invention is from 0.01 to 0.01 in terms of monomer units having cationic groups.
It is preferably selected from the range of 10 mol%, preferably 0.05 to 5 mol%. The degree of saponification of the vinyl ester unit may be within a water-soluble range, and although it varies depending on the content of the monomer unit having a cationic group, it is usually 50 to 100 mol%, preferably 60 to 100 mol%. Selected from a range of %. Furthermore, the degree of polymerization of the modified PVA is not particularly limited, but is usually
It is selected from the range of 50 to 3000, preferably 100 to 2500. In the present invention, the method of incorporating the PVA resin having a cationic group into the coating layer of the inkjet recording paper includes, for example, coating or impregnating the surface of the inkjet recording paper made by a known method by spraying or side pressing. or when manufacturing known coated paper type inkjet recording paper, it is mixed into the coating paint and coated with a blade, air knife,
Examples include a method of applying with a coating machine such as a roll coater. The amount of the cationic group-containing PVA resin added to the coating layer of inkjet recording paper is usually
0.01-10 g/ m2 , preferably 0.05-5 g/ m2 is used. If it is less than 0.01 g/m 2 , there is no effect of improving resolution or water resistance, and if it exceeds 10 g/m 2 , the liquid absorption rate tends to decrease, which is not preferable. As mentioned above, the cationic group-containing PVA resin used in the present invention can be applied to all types of inkjet recording paper, especially talc, kaolin, calcium carbonate, non-colloidal silica powder, and finely powdered urea-formalin resin fillers. Applicable to recording paper with various fillers such as, or recording paper with a coating layer of white pigment such as non-colloidal silica powder, acid clay, clay, talc, calcium carbonate, diatomaceous earth, titanium oxide, barium sulfate, etc. As a result, it is possible to obtain an inkjet recording paper capable of forming recorded images with high resolution and high water resistance. When incorporating a cationic group-containing PVA resin into the coating layer of inkjet recording paper, water-soluble materials such as polyacrylamide, starch, casein, gum arabic, carboxymethyl cellulose, methyl cellulose, ordinary PVA, and sodium polyacrylate may be used. Various additives such as resins, synthetic resin latexes such as synthetic rubber latexes, dispersed fluorescent dyes, PH regulators, antifoaming agents, lubricants, preservatives, and surfactants can also be used in combination. E. Function and Effects of the Invention Although the reason why the inkjet recording paper of the present invention is able to form recorded images with high resolution and good water resistance is not fully understood, it is presumed as follows. . That is, the dye in the aqueous ink used in the inkjet recording method is generally anionic, and the cationic group-containing PVA resin contained in the coating layer of the recording paper of the present invention has extremely high reactivity with anionic compounds. It is presumed that this is because when the ink is applied to the recording paper, it reacts instantaneously, absorbs it, suppresses the spread of the ink, and forms a water-resistant chemical bond. The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited thereto. In the examples, unless otherwise specified, "%" and "part" represent weight standards. Example 1 Content of monomer units having a cationic group obtained by saponifying a copolymer of vinyl acetate and trimethyl-3-(1-acrylamidopropyl)ammonium chloride as a cationic group-containing PVA resin was 3 mol %, saponification degree of vinyl acetate units was 98.5 mol %, and polymerization degree was 1750 to prepare a coating composition based on the following composition. Non-colloidal silica powder 100 parts PVA resin containing cationic group 25 parts Water 500 parts On the other hand, as the base paper, general high-quality paper (basis weight 65 g/m 2 ) with a sizing degree of 30 seconds based on JIS p8122 was used.
Apply the above coating composition on this base paper in a dry coating amount of 20%.
Apply with a blade coater so that it is g/m 2 ,
After drying, an inkjet recording paper was obtained. Color inkjet recording was performed on this recording paper using the following four colors of ink, and the recording characteristics were evaluated. Yellow ink (composition) CI acid yellow 23 2 parts diethylene glycol 30 parts water 70 parts Magenta ink (composition) CI acid red 32 2 parts diethylene glycol 30 parts water 70 parts Cyan ink (composition) CI Direct Blue 86 2 parts diethylene glycol 30 parts water 70 Part Black ink (composition) CI Direct Black 19 2 parts Diethylene glycol 30 parts Water 70 parts The evaluation results of the recording properties of the recording paper are shown in Table 1. The degree of bleeding was determined by measuring the printed dot diameter using a stereomicroscope and indicating how many times the diameter of the printed dot was compared to the ink droplet diameter. Water resistance was determined by immersing the recording paper in running water for 3 hours, and comparing the optical density (OD) measured using a Macbeth densitometer after immersion with the OD value before immersion. Examples 2 to 4 The same procedure as in Example 1 was conducted except that the following modified PVA was used in place of the cation-modified PVA used in Example 1. The evaluation results are also shown in Table 1. Cationic group-containing PVA resin used in Example 2: monomer unit having a cationic group obtained by saponifying a copolymer of vinyl acetate and trimethyl-3-(1-methacrylamidopropyl) ammonium chloride PVA with a content of 3 mol%, a degree of saponification of vinyl acetate units of 98.5 mol%, and a degree of polymerization of 550.
system resin. Cationic group-containing PVA resin used in Example 3: A cationic group obtained by saponifying a copolymer of vinyl acetate and trimethyl-3-(1-acrylamido-1,1-dimethylpropyl)ammonium chloride. The content of monomer units with 0.2
Saponification degree of vinyl acetate units in mol% 98.5 mol%,
PVA resin with a polymerization degree of 2000. Cationic group-containing PVA resin used in Example 4: Content of monomer units having cationic groups obtained by saponifying a copolymer of vinyl acetate and trimethyl-2-allyloxyethylammonium chloride. Saponification degree of vinyl acetate unit at 4 mol%
PVA resin with 88 mol% and polymerization degree of 550. Example 5 In place of 25 parts of cation-modified PVA used in Example 1, a copolymer of vinyl acetate and N-vinyl-2,3-dimethylimidazolinium chloride was saponified as a cation-modified group-containing PVA resin. The resulting imidazolinium group content is 4 mol%
Saponification degree of vinyl acetate unit is 98.5 mol%, polymerization degree
The same procedure as in Example 1 was conducted except that 20 parts of 1750 PVA-based resin and 20 parts of ordinary PVA (saponification degree 98.5 mol%, polymerization degree 1750) were used in combination. The results are shown in Table 1. Example 6 A 6% aqueous solution of the cationic group-containing PVA resin used in Example 1 was sized using a size press.
A recording paper was obtained by coating 10 seconds of general paper (basis weight: 65 g/m 2 ) at a dry weight of 2 g/m 2 . This recording paper was evaluated in the same manner as in Example 1. The results are shown in Table 1. Examples 7-8 The same procedure as in Example 6 was carried out except that the following PVA-based resin was used in place of the cationic group-containing PVA-based resin used in Example 6. The results are shown in Table 1. Cationic group-containing PVA resin used in Example 7: Cationic group-containing PVA resin used in Example 3. Cationic group-containing PVA resin used in Example 8: Cationic group-containing PVA resin used in Example 5. Comparative Example 1 Containing cationic group used in Example 1
PVA (saponification degree 98.5, polymerization degree
1750) was used in the same manner as in Example 1.
The results are shown in Table 1. Comparative Example 2 The same procedure as in Example 1 was carried out except that 150 parts of cationically modified PVA and 1000 parts of water were used instead of 25 parts of cationically modified PVA and 500 parts of water used in Example 1. (In this case, the amount of cation-modified PVA added to the paper is 12
g/ m2 . ) The obtained inkjet recording paper had a low ink absorption speed. Comparative Example 3 The same procedure as in Example 1 was carried out except that the general paper used in Example 6 was used as it was. The evaluation results of recording characteristics are also shown in Table 1.

【表】 比較例 4 実施例1において用いられたカチオン性基含有
PVAにかえて、中置換度の陽性デンプン(日本
食品化工株式会社製、商品名:日食ネオタツク
#53)を用いる以外は実施例1と同様に行つた。
結果を第2表に示す。 比較例 5 実施例1において用いられたカチオン性基含有
PVAにかえて、高置換度の陽性デンプン(日本
食品化工株式会社製、商品名:日食ネオタツク
#110M)を用いる以外は実施例1と同様に行つ
た。結果を第2表に示す。
[Table] Comparative example 4 Containing cationic group used in Example 1
The same procedure as in Example 1 was carried out except that instead of PVA, positive starch with a medium degree of substitution (manufactured by Nihon Shokuhin Kako Co., Ltd., trade name: Solar Eclipse Neotack #53) was used.
The results are shown in Table 2. Comparative Example 5 Containing cationic group used in Example 1
The same procedure as in Example 1 was carried out except that a highly substituted positive starch (manufactured by Nippon Shokuhin Kako Co., Ltd., trade name: Solar Eclipse Neotactic #110M) was used instead of PVA. The results are shown in Table 2.

【表】【table】

Claims (1)

【特許請求の範囲】 1 塗工層中に、カチオン性基を有するポリビニ
ルアルコール系樹脂を含有してなることを特徴と
するインクジエツト記録用紙。 2 カチオン性基を有するポリビニルアルコール
系樹脂が、酢酸ビニルと一般式 【化】 〔ここでR1、R2は水素原子またはメチル基、
Bは【式】または【式】R3、 R4、R5は低級アルキル基(置換基を含んでもよ
い)、Xはアンモニウム窒素と塩を形成する陰性
の基、AはB中の窒素原子と上式中のアミド基の
窒素原子を連結する基を示す。〕 で示されるカチオン性基を有する単量体との共重
合体のケン化物である特許請求の範囲第1項に記
載のインクジエツト記録用紙。
[Scope of Claims] 1. An inkjet recording paper characterized in that the coating layer contains a polyvinyl alcohol resin having a cationic group. 2 A polyvinyl alcohol resin having a cationic group is combined with vinyl acetate of the general formula [where R 1 and R 2 are a hydrogen atom or a methyl group,
B is [Formula] or [Formula] R 3 , R 4 , R 5 is a lower alkyl group (which may contain a substituent), X is a negative group that forms a salt with ammonium nitrogen, A is a nitrogen atom in B represents a group that connects the nitrogen atom of the amide group in the above formula. ] The inkjet recording paper according to claim 1, which is a saponified product of a copolymer with a monomer having a cationic group represented by:
JP59255970A 1984-12-03 1984-12-03 Ink jet recording paper Granted JPS61134291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59255970A JPS61134291A (en) 1984-12-03 1984-12-03 Ink jet recording paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59255970A JPS61134291A (en) 1984-12-03 1984-12-03 Ink jet recording paper

Publications (2)

Publication Number Publication Date
JPS61134291A JPS61134291A (en) 1986-06-21
JPH0567432B2 true JPH0567432B2 (en) 1993-09-24

Family

ID=17286100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59255970A Granted JPS61134291A (en) 1984-12-03 1984-12-03 Ink jet recording paper

Country Status (1)

Country Link
JP (1) JPS61134291A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013159A1 (en) * 1997-09-11 1999-03-18 Hymo Corporation Sheet surface treating agent and ink-jet printing paper
US6455134B1 (en) 1999-08-26 2002-09-24 Air Products Polymers, L.P. Ink jet media comprising a coating containing amine functional emulsion polymers
EP1398165A2 (en) 2002-09-13 2004-03-17 Fuji Photo Film Co., Ltd. Ink-jet recording sheet, method and ink
EP1609613A1 (en) 2004-06-22 2005-12-28 Fuji Photo Film Co., Ltd. Image recording medium manufacturing method
EP2055497A2 (en) 2007-10-31 2009-05-06 FUJIFILM Corporation Inkjet-recording medium and inkjet-recording method using same
EP2055498A1 (en) 2007-10-31 2009-05-06 Fujifilm Corporation Inkjet-recording medium and inkjet-recording method using same
EP2130876A1 (en) 2004-02-24 2009-12-09 FUJIFILM Corporation Inorganic fine particle dispersion and manufacturing method thereof as well as image-recording material
EP2275274A2 (en) 2009-03-31 2011-01-19 Fujifilm Corporation Method of producing recording medium
EP2436740A1 (en) 2003-09-29 2012-04-04 Fujifilm Corporation Ink for inkjet printing, ink set for inkjet printing, inkjet recording material and producing method for inkjet recording material, and inkjet recording method

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Publication number Priority date Publication date Assignee Title
JP2514194B2 (en) * 1986-12-26 1996-07-10 日本製紙株式会社 Inkjet recording sheet
JP3720444B2 (en) * 1996-02-02 2005-11-30 株式会社クラレ Recording material for water-based ink recording
US6348256B1 (en) 1998-09-29 2002-02-19 Celanese International Corporation Ink jet paper coatings containing amine functional monomer grafted poly(vinyl alcohol)
US6485609B1 (en) 2001-03-08 2002-11-26 Celanese International Corporation Ink jet printing paper incorporating amine functional poly(vinyl alcohol)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191084A (en) * 1981-05-22 1982-11-24 Canon Inc Recording medium for ink jet and recording method using thereof
JPS5824492A (en) * 1981-08-06 1983-02-14 Canon Inc Recording method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191084A (en) * 1981-05-22 1982-11-24 Canon Inc Recording medium for ink jet and recording method using thereof
JPS5824492A (en) * 1981-08-06 1983-02-14 Canon Inc Recording method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013159A1 (en) * 1997-09-11 1999-03-18 Hymo Corporation Sheet surface treating agent and ink-jet printing paper
CN1100180C (en) * 1997-09-11 2003-01-29 海茂株式会社 Sheet surface treating agent and ink-jet printing paper
US6455134B1 (en) 1999-08-26 2002-09-24 Air Products Polymers, L.P. Ink jet media comprising a coating containing amine functional emulsion polymers
EP1398165A2 (en) 2002-09-13 2004-03-17 Fuji Photo Film Co., Ltd. Ink-jet recording sheet, method and ink
EP2436740A1 (en) 2003-09-29 2012-04-04 Fujifilm Corporation Ink for inkjet printing, ink set for inkjet printing, inkjet recording material and producing method for inkjet recording material, and inkjet recording method
EP2130876A1 (en) 2004-02-24 2009-12-09 FUJIFILM Corporation Inorganic fine particle dispersion and manufacturing method thereof as well as image-recording material
EP1609613A1 (en) 2004-06-22 2005-12-28 Fuji Photo Film Co., Ltd. Image recording medium manufacturing method
EP2055497A2 (en) 2007-10-31 2009-05-06 FUJIFILM Corporation Inkjet-recording medium and inkjet-recording method using same
EP2055498A1 (en) 2007-10-31 2009-05-06 Fujifilm Corporation Inkjet-recording medium and inkjet-recording method using same
EP2275274A2 (en) 2009-03-31 2011-01-19 Fujifilm Corporation Method of producing recording medium

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