JP3043548B2 - paint remover - Google Patents

paint remover

Info

Publication number
JP3043548B2
JP3043548B2 JP5215365A JP21536593A JP3043548B2 JP 3043548 B2 JP3043548 B2 JP 3043548B2 JP 5215365 A JP5215365 A JP 5215365A JP 21536593 A JP21536593 A JP 21536593A JP 3043548 B2 JP3043548 B2 JP 3043548B2
Authority
JP
Japan
Prior art keywords
release agent
coo
meth
acrylate
tape
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
JP5215365A
Other languages
Japanese (ja)
Other versions
JPH0762306A (en
Inventor
寧昭 北崎
欣之輔 比野
健 紀村
智行 瀧本
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.)
Nichiban Co Ltd
Original Assignee
Nichiban 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 Nichiban Co Ltd filed Critical Nichiban Co Ltd
Priority to JP5215365A priority Critical patent/JP3043548B2/en
Publication of JPH0762306A publication Critical patent/JPH0762306A/en
Application granted granted Critical
Publication of JP3043548B2 publication Critical patent/JP3043548B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Landscapes

  • Polyurethanes Or Polyureas (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesive Tapes (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、粘着テープや粘着シー
トの粘着剤が塗布されていない基材面(背面)に塗工す
る剥離剤に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a release agent which is applied to the surface (back surface) of a pressure-sensitive adhesive tape or pressure-sensitive adhesive sheet to which no pressure-sensitive adhesive has been applied.

【0002】[0002]

【従来の技術】一般に、粘着テープは巻き重ねたものが
用いられており、これらの粘着テープの背面には、隣接
するテープの粘着剤が使用時に背面から容易に剥れるよ
うに、剥離剤が塗工されている。従来使用されている剥
離剤は、シリコーン系及び非シリコーン系のものに大別
することができ、中でも非シリコーン系剥離剤は、シリ
コーン系剥離剤に比べ、適度な剥離力を示すように塗工
するのが容易であり、そしてシリコーン系剥離剤のよう
に、塗工時に高温で焼き付ける必要もないので、多くの
粘着製品に用いられている。非シリコーン系剥離剤とし
ては、例えば、ステアリル(メタ)アクリレートと(メ
タ)アクリル酸の共重合体(特公昭29−3144号公
報)、ステアリル(メタ)アクリレートと(メタ)アク
リロニトリルとの共重合体(特公昭44−9599号公
報)、ステアリル(メタ)アクリル酸アミドと(メタ)
アクリル酸との共重合体(特公昭43−21855号公
報)、ステアリルカルバニルエチル(メタ)アクリレー
トを含む重合体又は共重合体(特公昭60−24828
号公報)等の長鎖アルキル基を有するアクリル系共重合
体からなる剥離剤が知られている。
2. Description of the Related Art In general, adhesive tapes are used in a wound state, and a release agent is provided on the back surface of these adhesive tapes so that the adhesive of an adjacent tape can be easily peeled off from the back surface during use. Coated. Conventionally used release agents can be broadly classified into silicone-based and non-silicone-based release agents. Among them, non-silicone-based release agents are coated so that they exhibit an appropriate release force compared to silicone-based release agents. It is used in many adhesive products because it is easy to do and does not need to be baked at high temperatures during coating, as is the case with silicone-based release agents. Examples of non-silicone release agents include copolymers of stearyl (meth) acrylate and (meth) acrylic acid (Japanese Patent Publication No. 29-3144) and copolymers of stearyl (meth) acrylate and (meth) acrylonitrile (Japanese Patent Publication No. 44-9599), stearyl (meth) acrylamide and (meth)
Copolymers with acrylic acid (JP-B-43-21855), polymers or copolymers containing stearylcarbanylethyl (meth) acrylate (JP-B-60-24828)
A release agent comprising an acrylic copolymer having a long-chain alkyl group has been known.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、これら
の剥離剤は、いずれも耐熱性が悪く、またポリオレフィ
ン系基材に対する密着性が悪いという問題点があった。
すなわち、従来の長鎖アルキル基を含有するアクリル系
共重合体からなる剥離剤では、高温にさらされた時に、
巻き重ねたテープの背面に塗工した剥離剤と、これに隣
接するテープの粘着剤との粘着力が増大するため、テー
プの背面から隣接するテープを剥離する時に要する負荷
が大きくなったり、また紙にポリエチレン等をラミネー
トした積層基材を用いたテープでは、積層基材の層間で
剥離(デラミ現象)が生じた。また基材としてポリエチ
レンやポリプロピレン等のポリオレフィン系フィルムを
用いたテープでは、基材表面と剥離剤との密着性が悪い
ため、巻き重ねたテープの背面から隣接するテープを剥
離した時に、背面の剥離剤が隣接するテープの粘着剤側
に移行し、テープの粘着特性を低下させるという欠点が
あった。
However, all of these release agents have problems in that they have poor heat resistance and poor adhesion to a polyolefin-based substrate.
That is, in the case of a conventional release agent composed of an acrylic copolymer containing a long-chain alkyl group, when exposed to high temperatures,
Since the adhesive force between the release agent coated on the back surface of the wound tape and the adhesive of the adjacent tape increases, the load required when peeling the adjacent tape from the back surface of the tape increases, or In a tape using a laminated base material obtained by laminating polyethylene or the like on paper, peeling (delamining) occurred between layers of the laminated base material. Also, in the case of a tape using a polyolefin-based film such as polyethylene or polypropylene as the base material, the adhesion between the base material surface and the release agent is poor. There is a drawback that the agent migrates to the adhesive side of the adjacent tape, deteriorating the adhesive properties of the tape.

【0004】本発明の目的は、耐熱性が優れ、粘着テー
プが高温にさらされても、テープの背面から隣接するテ
ープを剥離する時に要する負荷が小さく、また一般に剥
離剤との密着性が劣るポリオレフィン系基材に対して
も、密着性が優れた剥離剤を提供することにある。
[0004] An object of the present invention is to provide excellent heat resistance, a small load required for peeling an adjacent tape from the back surface of the adhesive tape even when the adhesive tape is exposed to a high temperature, and generally poor adhesion to a release agent. Another object of the present invention is to provide a release agent having excellent adhesion to a polyolefin-based substrate.

【0005】[0005]

【課題を解決するための手段】本発明は、一般式(I)
又は(II) CH2 =C(R1 )COO(Cm2mCOO)nCONHR2 (I) CH2 =C(R1 )COO(CH2)m OCO(CH2)m COOCONHR2 (II) (式中、R1 は水素原子又はメチル基を表わし、mは1
〜5の整数を表わし、nは1又は2の整数を表わし、R
2 は炭素数12以上のアルキル基を表わす)で示される
ビニルモノマーの重合体又は共重合体を主成分とする剥
離剤である。
The present invention provides a compound represented by the general formula (I):
Or (II) CH 2 CC (R 1 ) COO (C m H 2m COO) n CONHR 2 (I) CH 2 CC (R 1 ) COO (CH 2 ) m OCO (CH 2 ) m COOCONHR 2 (II) (Wherein, R 1 represents a hydrogen atom or a methyl group, and m represents 1)
And n is an integer of 1 or 2,
2 is a release agent containing a polymer or copolymer of a vinyl monomer represented by the following formula:

【0006】上記式(I)及び(II)で示されるビニルモ
ノマーは、一般式 (III)及び(IV) CH2 =C(R1 )COO(Cm2mCOO)nH (III) CH2 =C(R1 )COO(CH2)m OCO(CH2)m COOH (IV) (式中、R1 は水素原子又はメチル基を表わし、mは1
〜5の整数を表わし、nは1又は2の整数を表わす)で
示される(メタ)アクリル酸エステルに、一般式 (V) R2 NCO (V) (式中、R2 は炭素数12以上のアルキル基を表わす)
で示されるアルキルイソシアネートを付加反応させて製
造されるものである。
The vinyl monomers represented by the above formulas (I) and (II) are represented by the general formulas (III) and (IV): CH 2 CC (R 1 ) COO (C m H 2m COO) n H (III) CH 2 CC (R 1 ) COO (CH 2 ) m OCO (CH 2 ) m COOH (IV) (wherein R 1 represents a hydrogen atom or a methyl group, and m is 1
To a (meth) acrylate represented by the general formula (V) R 2 NCO (V) (wherein R 2 has 12 or more carbon atoms) Represents an alkyl group)
Which is produced by an addition reaction of an alkyl isocyanate represented by

【0007】一般式 (III)又は一般式 (IV) で示される
(メタ)アクリル酸エステルとしては、カルボキシメチ
ル(メタ)アクリレート、カルボキシエチル(メタ)ア
クリレート、カルボキシプロピル(メタ)アクリレー
ト、カルボキシブチル(メタ)アクリレート、カルボキ
シペンチル(メタ)アクリレート、カルボキシヘキシル
(メタ)アクリレート、カルボキシオクチル(メタ)ア
クリレート、2−(メタ)アクリロイルオキシエチルモ
ノサクシネート、5−(メタ)アクリロイルオキシペン
チルモノピメリネート等を挙げることができる。アルキ
ルイソシアネートとしては、ドデシル、トリデシル、テ
トラデシル、ペンタデシル、ヘキサデシル、オクタデシ
ル、ノナデシル、エイコシル、ヘンエイコシル、ドコシ
ル等の長鎖アルキル基を有するイソシアネートを挙げる
ことができる。上記ビニルモノマーの製造に用いられる
溶媒としては、アクリル酸エステル誘導体、アルキルイ
ソシアネート及び生成ビニルモノマーが共に溶解するも
のであれば特に制限はないが、例えばアセトン、トルエ
ン、酢酸エチル、ヘキサン、メチルエチルケトン及びこ
れらの混合溶媒等を挙げることができる。
The (meth) acrylate represented by the general formula (III) or (IV) includes carboxymethyl (meth) acrylate, carboxyethyl (meth) acrylate, carboxypropyl (meth) acrylate, carboxybutyl ( (Meth) acrylate, carboxypentyl (meth) acrylate, carboxyhexyl (meth) acrylate, carboxyoctyl (meth) acrylate, 2- (meth) acryloyloxyethyl monosuccinate, 5- (meth) acryloyloxypentyl monopimelinate, etc. Can be mentioned. Examples of the alkyl isocyanate include isocyanates having a long-chain alkyl group such as dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl and docosyl. The solvent used for the production of the vinyl monomer is not particularly limited as long as the acrylate derivative, the alkyl isocyanate and the resulting vinyl monomer are both dissolved, and examples thereof include acetone, toluene, ethyl acetate, hexane, methyl ethyl ketone and these. And the like.

【0008】本発明の剥離剤は、上記ビニルモノマーを
重合させるか、或は特に耐熱性が要求される場合や塗布
されている基材が、ポリエチレン、ポリプロピレン等の
ポリオレフィン系からなる難接着性基材の場合は、基材
と剥離剤との化学的親和性を高め基材との密着性をあげ
るために、上記ビニルモノマーと、エチレン性不飽和ニ
トリルモノマー或はエチレン性不飽和カルボン酸モノマ
ーのような極性の強いモノマーとを共重合させることが
好適である。エチレン性不飽和ニトリルモノマーとして
は、アクロニトリル、メタクリロニトリル等を挙げるこ
とができる。エチレン性不飽和カルボン酸モノマーとし
ては、アクリル酸、メタクリル酸、イタコン酸等を挙げ
ることができる。また必要により、これらのモノマーに
共重合可能な他のモノマー、例えばスチレン、酢酸ビニ
ル等を共重合させてもよい。重合又は共重合に用いられ
る溶媒としては、原料モノマー及び生成ポリマーが共に
溶解するものであれば特に制限はないが、例えばアセト
ン、トルエン、酢酸エチル、ヘキサン、メチルエチルケ
トン、及びこれらの混合溶媒等を挙げることができる。
ビニルモノマーからなる重合体及び他のモノマーとの共
重合体の数平均分子量は、Pst換算で10,000〜
200,000が好ましい。本発明の剥離剤は、キャピ
ラリー法による融点が100℃以上のものが好ましい。
The release agent of the present invention is obtained by polymerizing the above vinyl monomer, or when the heat resistance is particularly required, or when the coated base material is made of a polyolefin-based material such as polyethylene or polypropylene. In the case of a material, the vinyl monomer and the ethylenically unsaturated nitrile monomer or the ethylenically unsaturated carboxylic acid monomer are used in order to increase the chemical affinity between the base material and the release agent and increase the adhesion with the base material. It is preferable to copolymerize such a strongly polar monomer. Examples of the ethylenically unsaturated nitrile monomer include acrylonitrile and methacrylonitrile. Examples of the ethylenically unsaturated carboxylic acid monomer include acrylic acid, methacrylic acid, and itaconic acid. If necessary, other monomers copolymerizable with these monomers, for example, styrene, vinyl acetate and the like may be copolymerized. The solvent used for the polymerization or copolymerization is not particularly limited as long as the raw material monomer and the produced polymer are both dissolved, and examples thereof include acetone, toluene, ethyl acetate, hexane, methyl ethyl ketone, and a mixed solvent thereof. be able to.
The number average molecular weight of the polymer composed of a vinyl monomer and a copolymer with another monomer is 10,000 to 10,000 in terms of Pst.
200,000 is preferred. The release agent of the present invention preferably has a melting point of 100 ° C. or higher by a capillary method.

【0009】[0009]

【実施例】【Example】

実施例1 アクリル酸エステル(モル比:カルボキシエチルアクリ
レート/カルボキシブチルアクリレート/カルボキシヘ
キシルアクリレート/カルボキシオクチルアクリレート
=10/40/30/20)38g、オクタデシルイソ
シアネート62g及びトルエン100gを反応容器に仕
込み、窒素ガスを流しながら攪拌下に55℃で6時間反
応させた後、5℃に冷却して白色の沈殿物を得た。沈殿
物は、式(VI)(式中、pは1〜4の整数を表わす)で示
される分子構造をもつビニルモノマーであることを、赤
外線吸収分析及び熱分解ガスクロマトグラフィにより確
認した。 CH2 =CHCOO(CH2 CH2p COOCONHC1837 (VI) 次いで、得られたビニルモノマー(VI)70g、アクリロ
ニトリル25g、アクリル酸5g、トルエン80g及び
n−ヘキサン20gを反応容器に仕込み、窒素ガスを流
しながら攪拌下に、アゾビスイソブチロニトリル1.5
gをトルエン24gに溶解した溶液を滴下し、75〜8
0℃で24時間重合反応させた。反応終了後、真空乾燥
により溶媒を除去し、固形の剥離剤を得た。得られた剥
離剤について、下記に示す融点、耐熱性及び残留プロー
ブタック率を測定した。
Example 1 A reaction vessel was charged with 38 g of an acrylate (molar ratio: carboxyethyl acrylate / carboxybutyl acrylate / carboxyhexyl acrylate / carboxyoctyl acrylate = 10/40/30/20), 62 g of octadecyl isocyanate and 100 g of toluene, and charged with nitrogen gas. The mixture was allowed to react at 55 ° C. for 6 hours while stirring, and then cooled to 5 ° C. to obtain a white precipitate. It was confirmed by infrared absorption analysis and pyrolysis gas chromatography that the precipitate was a vinyl monomer having a molecular structure represented by the formula (VI) (where p represents an integer of 1 to 4). CH 2 CHCHCOO (CH 2 CH 2 ) p COOOCONHC 18 H 37 (VI) Then, 70 g of the obtained vinyl monomer (VI), 25 g of acrylonitrile, 5 g of acrylic acid, 80 g of toluene and 20 g of n-hexane were charged into a reaction vessel. While stirring with flowing nitrogen gas, azobisisobutyronitrile 1.5
g was dissolved in 24 g of toluene, and a solution of 75 to 8 g was added dropwise.
The polymerization reaction was performed at 0 ° C. for 24 hours. After completion of the reaction, the solvent was removed by vacuum drying to obtain a solid release agent. For the obtained release agent, the melting point, heat resistance and residual probe tack ratio shown below were measured.

【0010】融点 内径1mmのキャピラリーに充填した剥離剤を昇温速度5
℃/分で加熱し、剥離剤が透明液体に融解した時の温度
を測定した。耐熱性 剥離剤の1%トルエン溶液を調製し、これをポリエチレ
ンラミネートクラフト紙のポリエチレン側に10g/m2
なるように塗布し、100℃で3分間乾燥した後、これ
に、幅50mmのクラフトテープ(ニチバン(株)製、ク
ラフトテープ315)を50g/cm2 の荷重をかけなが
ら、23℃、60℃、70℃及び80℃の条件下でそれ
ぞれ24時間圧着し、さらに23℃、相対湿度65%の
雰囲気下に24時間放置して、試料を作製した。それぞ
れの試料について、クラフトテープを剥離角度90度、
剥離速度1000mm/分で剥離したときの剥離力(gf/
50mm)を測定し、耐熱性を評価した。残留プローブタック率 上記耐熱性の評価に用いた試料から剥離したクラフトテ
ープのプローブタックを、NSプローブタックテスター
(ニチバン(株)製)を用いて測定した。残留プローブ
タック率は、測定したプローブタック値の、未使用クラ
フトテープのプローブタック値に対する比で表わした。
なお、プローブタック値の測定条件は、プローブタック
剥離速度1cm/秒、貼付時間1秒、貼付圧100gf/cm2
であり、測定雰囲気は、23℃、相対湿度65%で行っ
た。
The release agent filled in the capillary having a melting point of 1 mm in inner diameter is heated at a rate of 5 times.
Heating was performed at a rate of ° C./minute, and the temperature at which the release agent melted into a transparent liquid was measured. A 1% toluene solution of a heat-resistant release agent was prepared and applied to the polyethylene side of polyethylene-laminated kraft paper at 10 g / m 2 and dried at 100 ° C. for 3 minutes. A tape (Kraft Tape 315, manufactured by Nichiban Co., Ltd.) was pressed under a load of 50 g / cm 2 at 23 ° C., 60 ° C., 70 ° C. and 80 ° C. for 24 hours, and further 23 ° C. and relative humidity The sample was left standing in an atmosphere of 65% for 24 hours to prepare a sample. For each sample, peel the kraft tape 90 degrees,
Peeling force when peeling at a peeling speed of 1000 mm / min (gf /
50 mm) and the heat resistance was evaluated. Residual probe tack ratio The probe tack of the kraft tape peeled from the sample used for the evaluation of the heat resistance was measured using an NS probe tack tester (Nichiban Co., Ltd.). The residual probe tack ratio was represented by the ratio of the measured probe tack value to the probe tack value of an unused kraft tape.
The measurement conditions of the probe tack value were as follows: probe tack peeling speed 1 cm / sec, sticking time 1 second, sticking pressure 100 gf / cm 2
The measurement was performed at 23 ° C. and a relative humidity of 65%.

【0011】実施例2 実施例1で製造したビニルモノマー60g、アクリロニ
トリル25g、アクリル酸15g、トルエン80g及び
n−ヘキサン20gを反応容器に仕込んだ以外は、実施
例1と同様にして重合反応させて剥離剤を得た。得られ
た剥離剤について、実施例1と同様にして融点、耐熱性
及び残留プローブタック率を測定した。結果を表1に示
す。
Example 2 A polymerization reaction was carried out in the same manner as in Example 1 except that 60 g of the vinyl monomer produced in Example 1, 25 g of acrylonitrile, 15 g of acrylic acid, 80 g of toluene and 20 g of n-hexane were charged into the reaction vessel. A release agent was obtained. For the obtained release agent, the melting point, heat resistance, and residual probe tack ratio were measured in the same manner as in Example 1. Table 1 shows the results.

【0012】実施例3 実施例1で製造したビニルモノマー80g、アクリロニ
トリル10g、アクリル酸10g、トルエン80g及び
n−ヘキサン20gを反応容器に仕込んだ以外は、実施
例1と同様にして重合反応させて、剥離剤を得た。得ら
れた剥離剤について、実施例1と同様にして融点、耐熱
性及び残留プローブタック率を測定した。結果を表1に
示す。
Example 3 A polymerization reaction was carried out in the same manner as in Example 1 except that 80 g of the vinyl monomer produced in Example 1, 10 g of acrylonitrile, 10 g of acrylic acid, 80 g of toluene and 20 g of n-hexane were charged into the reaction vessel. And a release agent. For the obtained release agent, the melting point, heat resistance, and residual probe tack ratio were measured in the same manner as in Example 1. Table 1 shows the results.

【0013】実施例4 2−アクリロイルオキシエチルモノサクシネート42
g、オクタデシルイソシネート58g及びトルエン10
0gを反応容器に仕込んで、実施例1と同様にして重合
反応させた。沈殿物は、式 (VII)に示されるビニルモノ
マーであることを、赤外線吸収分析及び熱分解ガスクロ
マトグラフィにより確認した。 CH2 =CHCOOCH2 CH2 OCOCH2 CH2 COOCONHC1837 (VII) 次いで、得られたビニルモノマー (VII)70g、アクリ
ロニトリル25g、アクリル酸5g、酢酸エチル40g
及びアセトン30g及びトルエン20gを反応容器に仕
込み、実施例1と同様にして重合反応させた。反応終了
後、真空乾燥により溶媒を除去し、固形の剥離剤を得
た。得られた剥離剤について、実施例1と同様にして融
点、耐熱性及び残留プローブタック率を測定した。結果
を表1に示す。
Example 4 2-acryloyloxyethyl monosuccinate 42
g, octadecyl isocyanate 58 g and toluene 10
0 g was charged into a reaction vessel and a polymerization reaction was carried out in the same manner as in Example 1. The precipitate was confirmed to be a vinyl monomer represented by the formula (VII) by infrared absorption analysis and pyrolysis gas chromatography. CH 2 = CHCOOCH 2 CH 2 OCOCH 2 CH 2 COOCONHC 18 H 37 (VII) is then obtained vinyl monomer (VII) 70 g, acrylonitrile 25 g, acrylic acid 5g, ethyl acetate 40g
Then, 30 g of acetone and 20 g of toluene were charged into a reaction vessel, and a polymerization reaction was carried out in the same manner as in Example 1. After completion of the reaction, the solvent was removed by vacuum drying to obtain a solid release agent. For the obtained release agent, the melting point, heat resistance, and residual probe tack ratio were measured in the same manner as in Example 1. Table 1 shows the results.

【0014】比較例1 ステアリルアクリレート70g、アクリロニトリル25
g、アクリル酸5g、酢酸エチル70g及びアセトン3
0gを反応容器に仕込んだ以外は、実施例1と同様にし
て重合反応させて剥離剤を得た。得られた剥離剤につい
て、実施例1と同様にして融点、耐熱性及び残留プロー
ブタック率を測定した。結果を表1に示す。
Comparative Example 1 Stearyl acrylate 70 g, acrylonitrile 25
g, acrylic acid 5 g, ethyl acetate 70 g and acetone 3
Except that 0 g was charged in the reaction vessel, a polymerization reaction was carried out in the same manner as in Example 1 to obtain a release agent. For the obtained release agent, the melting point, heat resistance, and residual probe tack ratio were measured in the same manner as in Example 1. Table 1 shows the results.

【0015】比較例2 ステアリルアクリレート90g、アクリロニトリル5
g、アクリル酸5g、酢酸エチル70g及びアセトン3
0gを反応容器に仕込んだ以外は、実施例1と同様にし
て重合反応させて剥離剤を得た。得られた剥離剤につい
て、実施例1と同様にして融点、耐熱性及び残留プロー
ブタック率を測定した。結果を表1に示す。
Comparative Example 2 Stearyl acrylate 90 g, acrylonitrile 5
g, acrylic acid 5 g, ethyl acetate 70 g and acetone 3
Except that 0 g was charged in the reaction vessel, a polymerization reaction was carried out in the same manner as in Example 1 to obtain a release agent. For the obtained release agent, the melting point, heat resistance, and residual probe tack ratio were measured in the same manner as in Example 1. Table 1 shows the results.

【0016】比較例3 ステアリルアクリレート80g、アクリロニトリル10
g、アクリル酸10g、酢酸エチル70g及びアセトン
30gを反応容器に仕込んだ以外は、実施例1と同様に
して重合反応させて剥離剤を得た。得られた剥離剤につ
いて、実施例1と同様にして融点、耐熱性及び残留プロ
ーブタック率を測定した。結果を表1に示す。
Comparative Example 3 Stearyl acrylate 80 g, acrylonitrile 10
g, 10 g of acrylic acid, 70 g of ethyl acetate, and 30 g of acetone were charged in a reaction vessel in the same manner as in Example 1 to obtain a release agent. For the obtained release agent, the melting point, heat resistance, and residual probe tack ratio were measured in the same manner as in Example 1. Table 1 shows the results.

【0017】[0017]

【表1】 [Table 1]

【0018】[0018]

【発明の効果】本発明の剥離剤は、耐熱性が優れ、例え
ば70〜80℃の高温下でも、これを用いた粘着テープ
は、従来の比較例1〜3で得た長鎖アルキルビニルモノ
マー系剥離剤に比べ、巻き重ねたテープの背面から、隣
接するテープを剥離する時に要する負荷が小さく、また
一般に剥離剤との接着性が劣るポリエチレン、ポリプロ
ピレン等のポリオレフィン系基材に対しても、密着性が
優れる。
The release agent of the present invention has excellent heat resistance. For example, even at a high temperature of 70 to 80 ° C., the pressure-sensitive adhesive tape using the same has a long-chain alkyl vinyl monomer obtained in Comparative Examples 1 to 3. Compared with the system release agent, from the back of the wound tape, the load required when peeling the adjacent tape is small, and also generally poor adhesion with the release agent polyethylene, polypropylene and other polyolefin-based substrates, Excellent adhesion.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 瀧本 智行 東京都千代田区九段南2丁目2番4号 ニチバン株式会社内 (58)調査した分野(Int.Cl.7,DB名) C09J 7/02 C08F 20/36 C08G 18/62 C08L 33/00 C09K 3/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tomoyuki Takimoto 2-4-4 Kudanminami, Chiyoda-ku, Tokyo Nichiban Co., Ltd. (58) Field surveyed (Int.Cl. 7 , DB name) C09J 7/02 C08F 20/36 C08G 18/62 C08L 33/00 C09K 3/00

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 一般式(I)又は(II) CH2 =C(R1 )COO(Cm2mCOO)nCONHR2 (I) CH2 =C(R1 )COO(CH2)m OCO(CH2)m COOCONHR2 (II) (式中、R1 は水素原子又はメチル基を表わし、mは1
〜5の整数を表わし、nは1又は2の整数を表わし、R
2 は炭素数12以上のアルキル基を表わす)で示される
ビニルモノマーの重合体又は共重合体を主成分とするこ
とを特徴とする剥離剤。
1. Formula (I) or (II) CH 2 CC (R 1 ) COO (C m H 2m COO) n CONHR 2 (I) CH 2 CC (R 1 ) COO (CH 2 ) m OCO (CH 2 ) m COOCONHR 2 (II) (wherein, R 1 represents a hydrogen atom or a methyl group, and m represents 1
And n is an integer of 1 or 2,
(2 represents an alkyl group having 12 or more carbon atoms)).
【請求項2】 ビニルモノマーが、一般式 (III)又は(I
V) CH2 =C(R1 )COO(Cm2mCOO)nH (III) CH2 =C(R1 )COO(CH2)m OCO(CH2)m COOH (IV) (式中、R1 は水素原子又はメチル基を表わし、mは1
〜5の整数を表わし、nは1〜10の整数を表わす)で
示される(メタ)アクリル酸エステルに、一般式 (V) R2 NCO (V) (式中、R2 は炭素数12以上のアルキル基を表わす)
で示されるアルキルイソシアネートを付加反応させて生
成したものである請求項1記載の剥離剤。
2. The method according to claim 1, wherein the vinyl monomer has the general formula (III) or (I)
V) CH 2 CC (R 1 ) COO (C m H 2m COO) n H (III) CH 2 CC (R 1 ) COO (CH 2 ) m OCO (CH 2 ) m COOH (IV) , R 1 represents a hydrogen atom or a methyl group, and m is 1
And (n represents an integer of 1 to 10) a (meth) acrylic acid ester represented by the general formula (V) R 2 NCO (V) (wherein R 2 has 12 or more carbon atoms) Represents an alkyl group)
The release agent according to claim 1, which is produced by an addition reaction of an alkyl isocyanate represented by the formula (1).
JP5215365A 1993-08-31 1993-08-31 paint remover Expired - Lifetime JP3043548B2 (en)

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