JPH07157733A - Rubber-based tackifier composition - Google Patents

Rubber-based tackifier composition

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Publication number
JPH07157733A
JPH07157733A JP30539793A JP30539793A JPH07157733A JP H07157733 A JPH07157733 A JP H07157733A JP 30539793 A JP30539793 A JP 30539793A JP 30539793 A JP30539793 A JP 30539793A JP H07157733 A JPH07157733 A JP H07157733A
Authority
JP
Japan
Prior art keywords
rubber
composition
sensitive adhesive
parts
pressure
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.)
Pending
Application number
JP30539793A
Other languages
Japanese (ja)
Inventor
Shinji Terachi
信治 寺地
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP30539793A priority Critical patent/JPH07157733A/en
Publication of JPH07157733A publication Critical patent/JPH07157733A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain the composition excellent in storage stability, readily causing its crosslinking reaction when irradiated, and good in balance between tackiness and cohesive force, by ultraviolet light irradiation of a composition comprising a rubber, tackifying resin, plasticizer, polyfunctional thiol and photopolymerization initiator. CONSTITUTION:This composition can be obtained by ultraviolet light irradiation of a composition comprising a rubber (pref. natural rubber), a tackifying resin (e.g. rosin), a plasticizer (e.g. process oil, polybutene), a polyfunctional thiol (e.g. butanediol bisthioglycolate) and a photopolymerization initiator [e.g. 4-(2- hydroxy-2-propyl)ketone].

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、ゴム系の粘着剤組成物
に関する。
TECHNICAL FIELD The present invention relates to a rubber-based pressure-sensitive adhesive composition.

【0002】[0002]

【従来の技術】従来より、ゴム系粘着剤は柔軟性、弾
性、粘着性などに優れた性能を示すので、感圧性粘着テ
ープの用途に使用されている。しかしながら、凝集力が
不足する為、高温下での保持力が低くなる傾向が有り夏
場の気温が高い環境下で使用すると粘着剤層にずれが生
じるといった問題があった。
2. Description of the Related Art Rubber-based pressure-sensitive adhesives have been used for pressure-sensitive pressure-sensitive adhesive tapes since they have been excellent in flexibility, elasticity and adhesiveness. However, since the cohesive force is insufficient, the holding power at high temperature tends to be low, and there is a problem that the pressure-sensitive adhesive layer shifts when used in an environment where the temperature in summer is high.

【0003】凝集力を改善する方法として、通常、硫黄
および加硫促進剤を粘着剤中に添加し、架橋させる方法
があるが、架橋反応を促進させるために120℃から2
00℃に加熱する必要があり、膨大なエネルギーが必要
となる。簡易に架橋反応を進行させる方法として、ゴム
成分、粘着付与剤、ロジンと2個以上のアクリレート基
を結合成分として含有する樹脂、の3者を主成分とする
配合物に、放射線を照射することにより架橋を起こさせ
るゴム系粘着剤が報告されている(特公平2−3833
号公報)。
As a method for improving the cohesive force, usually, there is a method in which sulfur and a vulcanization accelerator are added to the pressure-sensitive adhesive to effect crosslinking, but from 120 ° C. to 2 ° C. in order to accelerate the crosslinking reaction.
It needs to be heated to 00 ° C., which requires enormous energy. As a method of easily proceeding the crosslinking reaction, irradiating a composition mainly composed of a rubber component, a tackifier, and a resin containing rosin and two or more acrylate groups as a binding component with radiation. Has reported a rubber-based adhesive that causes crosslinking (Japanese Patent Publication No. 2-3833).
Issue).

【0004】しかしながら、上記記載のゴム系粘着剤で
は、放射線の照射により架橋反応のみならず分解反応も
伴い、低分子化してしまうという問題があった。
However, the above-mentioned rubber-based pressure-sensitive adhesive has a problem that it is reduced in molecular weight due to not only a crosslinking reaction but also a decomposition reaction due to irradiation of radiation.

【0005】[0005]

【発明が解決しようとする課題】本発明は上記問題点に
鑑みてなされたものでその目的は、貯蔵安定性に優れ、
光照射により容易に架橋反応が起こり、粘着性と凝集力
とのバランスが良好なゴム系の粘着剤組成物を提供する
ことにある。
The present invention has been made in view of the above problems, and an object thereof is to provide excellent storage stability.
The purpose of the present invention is to provide a rubber-based pressure-sensitive adhesive composition that readily undergoes a crosslinking reaction by irradiation with light and has a good balance between tackiness and cohesive force.

【0006】[0006]

【課題を解決するための手段】本発明のゴム系粘着剤組
成物は、ゴム、粘着付与樹脂、可塑剤、多官能チオール
および光重合開始剤からなる。本発明に使用できるゴム
としては、天然ゴム(NR)ならびにスチレン・ブタジ
エンゴム(SBR)、ブタジエンゴム(BR)、クロロ
プレンゴム(CR)、ニトリルゴム(NBR)などの合
成ゴムなどが挙げられるが、特に天然ゴムが好ましく挙
げられる。天然ゴムとしては、通常のゴム工業で一般的
に使用されているものであればよく、例えばRSS−N
O.1〜4、SMR−5L、SMR−5、SMR−2
0、ペールクレープ、エアドライシートなどが挙げられ
る。
The rubber-based pressure-sensitive adhesive composition of the present invention comprises a rubber, a tackifying resin, a plasticizer, a polyfunctional thiol and a photopolymerization initiator. Examples of the rubber that can be used in the present invention include natural rubber (NR) and synthetic rubbers such as styrene-butadiene rubber (SBR), butadiene rubber (BR), chloroprene rubber (CR), nitrile rubber (NBR), and the like. Natural rubber is particularly preferable. As the natural rubber, those generally used in the ordinary rubber industry may be used, for example, RSS-N.
O. 1-4, SMR-5L, SMR-5, SMR-2
0, pale crepe, air dry sheet and the like.

【0007】粘着付与樹脂としては、各種ロジンおよび
水添ロジン、部分水添ロジン、不均一化ロジン、重合ロ
ジン、マレイン化ロジンなどの変性ロジン類、上記ロジ
ンおよび変性ロジン類の金属塩、アミン塩、アミド塩、
アミドなどの誘導体が挙げられる。
Examples of the tackifying resin include various rosins, hydrogenated rosins, partially hydrogenated rosins, heterogenized rosins, polymerized rosins, modified rosins such as maleated rosins, metal salts of the above rosins and modified rosins, and amine salts. , Amide salt,
Examples include derivatives such as amides.

【0008】また、ペンタエリスリトールなどのエステ
ル化合物、α−ピネン、β−ピネンなどのテルペン類の
重合体、もしくはそれらの共重合体などのテルペン樹脂
類、テルペンフェノール樹脂などのテルペン変性体、芳
香族系炭化水素樹脂、脂肪族系炭化水素樹脂などの石油
樹脂およびこれらの水素化物が挙げられる。さらには、
クマロン−インデン樹脂、アルキルフェノール−アセチ
レン樹脂などのフェノール樹脂類、その他公知のものが
単独又は併用し得る。
Also, ester compounds such as pentaerythritol, polymers of terpenes such as α-pinene and β-pinene, or terpene resins such as copolymers thereof, terpene modified products such as terpene phenol resins, and aromatics. Examples include petroleum resins such as hydrocarbon-based resins and aliphatic hydrocarbon resins, and hydrides thereof. Moreover,
Phenol resins such as coumarone-indene resin and alkylphenol-acetylene resin, and other known resins may be used alone or in combination.

【0009】上記粘着付与樹脂は、ゴム100重量部に
対して、20〜200重量部が好ましい。20重量部未
満の場合には良好な初期タック力や粘着力が得られな
い。また、200重量部を越えると凝集力が低下する。
The tackifying resin is preferably 20 to 200 parts by weight with respect to 100 parts by weight of rubber. If it is less than 20 parts by weight, good initial tack force and adhesive force cannot be obtained. If it exceeds 200 parts by weight, the cohesive force will be reduced.

【0010】可塑剤としては、プロセスオイル、ポリエ
ステル系可塑剤、ポリブテン、液状テルペン樹脂、液状
テルペンフェノール樹脂、液状キシレン樹脂、液状スチ
レン樹脂、液状石油樹脂、その他公知の可塑剤を単独ま
たは併用し得る。
As the plasticizer, process oil, polyester plasticizer, polybutene, liquid terpene resin, liquid terpene phenol resin, liquid xylene resin, liquid styrene resin, liquid petroleum resin, and other known plasticizers may be used alone or in combination. .

【0011】上記可塑剤は、ゴム100重量部に対し
て、5〜100重量部が好ましい。5重量部未満の場合
には粘着力が低下し、100重量部を越えると凝集力が
低下する。
The above-mentioned plasticizer is preferably 5 to 100 parts by weight with respect to 100 parts by weight of rubber. If it is less than 5 parts by weight, the adhesive strength will be reduced, and if it exceeds 100 parts by weight, the cohesive force will be decreased.

【0012】多官能チオールは、架橋反応をスムーズに
進行させるためのもので、例えば、ブタンジオールビス
チオグリコレート、エチレングリコールビスチオグリコ
レート、トリメチロールプロパントリスチオグリコレー
ト、ペンタエリスリトールテトラキスチオグリコレート
などが挙げられる。
The polyfunctional thiol is for promoting a smooth crosslinking reaction, and is, for example, butanediol bisthioglycolate, ethylene glycol bisthioglycolate, trimethylolpropane tristhioglycolate, pentaerythritol tetrakisthioglycolate. And so on.

【0013】上記多官能チオールは、ゴム100重量部
に対して、0.01〜3重量部、さらには0.05〜1
重量部が好ましい。0.01重量部未満の場合には酸素
阻害を受けやすくなり架橋反応が進行しにくくなる。ま
た、3重量部を越えると多官能チオールの残留臭が強
く、初期タックおよび粘着力が著しく低下する。
The above polyfunctional thiol is used in an amount of 0.01 to 3 parts by weight, and more preferably 0.05 to 1 part by weight, based on 100 parts by weight of rubber.
Parts by weight are preferred. If the amount is less than 0.01 part by weight, oxygen inhibition is likely to occur, and the crosslinking reaction is difficult to proceed. On the other hand, if the amount exceeds 3 parts by weight, the residual odor of the polyfunctional thiol is strong and the initial tack and the adhesive force are significantly reduced.

【0014】光重合開始剤としては、4−(2−ヒドロ
キシ−2−プロピル)ケトン、1−ヒドロキシシクロヘ
キシルフェニルケトン、2−ヒドロキシ−2,2−ジメ
チルアセトフェノン、2,2−ジメトキシ−2−フェニ
ルアセトフェノン等のアセトフェノン系、ベンゾインエ
チルエーテル、ベンゾインイソプロピルエーテル等のベ
ンゾインエーテル系、ベンジルジメフィルケタール等の
ケタール系並びにハロゲン化ケトン、アシルホスフィノ
キシド、アシルホスフォナート等の公知のものが挙げら
れる。上記光重合開始剤はゴム100重量部に対して、
0.01〜1重量部が好ましい。0.01重量部未満の
場合には架橋が充分ではなく凝集力の改善効果が得られ
ない。また、1重量部を越えると初期タックおよび粘着
力が著しく低下する。
As the photopolymerization initiator, 4- (2-hydroxy-2-propyl) ketone, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2,2-dimethylacetophenone, 2,2-dimethoxy-2-phenyl is used. Examples thereof include known compounds such as acetophenone-based compounds such as acetophenone, benzoin-ether-based compounds such as benzoin ethyl ether and benzoin isopropyl ether, ketal-based compounds such as benzyl dimefil ketal, and halogenated ketones, acylphosphinoxides, acylphosphonates and the like. The photopolymerization initiator is added to 100 parts by weight of rubber,
0.01 to 1 part by weight is preferable. If the amount is less than 0.01 parts by weight, the crosslinking is insufficient and the effect of improving the cohesive force cannot be obtained. On the other hand, if it exceeds 1 part by weight, the initial tack and the adhesive strength are significantly reduced.

【0015】本発明のゴム系粘着剤組成物は、上記配合
組成物に紫外線を照射されてなる。紫外線照射量は必要
に応じて適宜選択される。紫外線を照射するのに用いる
ランプとしては、波長400nm以下に発光分布を有す
るものが好ましく、例えば低圧水銀灯、中圧水銀灯、高
圧水銀灯、超高圧水銀灯、ケミカルランプ、ブラックラ
ンプ、マイクロウエーブ励起水銀灯、メタルハライドラ
ンプなどが挙げられる。
The rubber-based pressure-sensitive adhesive composition of the present invention is obtained by irradiating the above compounded composition with ultraviolet rays. The amount of UV irradiation is appropriately selected as necessary. The lamp used for irradiating ultraviolet rays preferably has a light emission distribution at a wavelength of 400 nm or less, and examples thereof include a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, an ultrahigh-pressure mercury lamp, a chemical lamp, a black lamp, a microwave-excited mercury lamp, and a metal halide. Examples include lamps.

【0016】本発明のゴム系粘着剤組成物は、必要に応
じて有機溶剤に希釈し、均一に混合し、粘着剤溶液と
し、テープ基材などに塗工することができる。また、紫
外線の照射は塗工後、粘着剤溶液を乾燥させる前に行う
方が凝集力向上の効果が大きいという点で好ましい。
The rubber-based pressure-sensitive adhesive composition of the present invention can be diluted with an organic solvent, if necessary, and uniformly mixed to prepare a pressure-sensitive adhesive solution, which can be applied to a tape substrate or the like. Further, it is preferable that the irradiation of ultraviolet rays is performed after coating and before drying the pressure-sensitive adhesive solution because the effect of improving the cohesive force is great.

【0017】また、本発明のゴム系粘着剤組成物は、紫
外線照射された後のゲル分率として30〜50重量%が
凝集力を改善するという点で好ましい。
In the rubber-based pressure-sensitive adhesive composition of the present invention, a gel fraction of 30 to 50% by weight after being irradiated with ultraviolet rays is preferable in that the cohesive force is improved.

【0018】また、本発明のゴム系粘着剤組成物には、
上記配合物を必須成分として炭酸カルシウム、クレーな
どの充填剤、顔料、老化防止剤などの公知の粘着剤添加
物を必要に応じて用いることができる。
The rubber-based pressure-sensitive adhesive composition of the present invention also comprises
If necessary, known adhesive additives such as calcium carbonate, fillers such as clay, pigments, antioxidants, etc. can be used with the above-mentioned composition as an essential component.

【0019】本発明のゴム系粘着剤組成物は、基材の一
面に塗布することにより粘着テープが得られ、特にセロ
ファンテープ、クラフトテープ、布テープ、和紙テー
プ、粘着ラベルなどに好適に使用できる。
The rubber-based pressure-sensitive adhesive composition of the present invention can be applied to one surface of a substrate to obtain a pressure-sensitive adhesive tape, and can be suitably used particularly for cellophane tape, craft tape, cloth tape, Japanese paper tape, pressure-sensitive adhesive label and the like. .

【0020】[0020]

【作用】本発明によれば、紫外線を照射することによ
り、ゴムポリマーが架橋反応を起こす。また、多官能チ
オールの作用により架橋時の酸素阻害が抑制され、架橋
反応が効率良く進行する。
According to the present invention, the rubber polymer undergoes a crosslinking reaction by being irradiated with ultraviolet rays. In addition, the action of the polyfunctional thiol suppresses oxygen inhibition during crosslinking, and the crosslinking reaction proceeds efficiently.

【0021】[0021]

【実施例】以下、本発明の実施例について説明する。
尚、以下「部」とあるのは「重量部」を意味する。 (実施例1) (粘着剤溶液の調整)天然ゴム(RSS−NO.1)
を、ミキシングロールで80℃で良く素練りし、ムーニ
ー粘度ML1+4 (100℃)が50の素練りゴムを得
た。次いで、上記素練りゴム100部、石油樹脂(日本
ゼオン社製、商品名「クイントンA−100」)100
部、プロセスオイル(出光興産社製、商品名「DPN−
260」)30部、トリメチロールプロパントリスチオ
グリコレート(淀化学社製)0.5部および2−ヒドロ
キシ−2,2−ジメチルアセトフェノン(チバガイギー
社製、商品名「ダロキュア1173」)0.3部をトル
エン500部中に混合攪拌し、溶解させて天然ゴム系粘
着剤組成物の溶液を得た。
EXAMPLES Examples of the present invention will be described below.
In the following, "parts" means "parts by weight". (Example 1) (Preparation of adhesive solution) Natural rubber (RSS-NO. 1)
Was thoroughly masticated at 80 ° C. with a mixing roll to obtain a masticated rubber having a Mooney viscosity ML 1 + 4 (100 ° C.) of 50. Next, 100 parts of the above masticated rubber, 100 petroleum resins (manufactured by Nippon Zeon Co., Ltd., trade name "Quinton A-100")
Part, process oil (made by Idemitsu Kosan Co., Ltd., product name "DPN-
260 "), 30 parts, trimethylolpropane tristhioglycolate (manufactured by Yodo Chemical Co., Ltd.) 0.5 part and 2-hydroxy-2,2-dimethylacetophenone (manufactured by Ciba-Geigy, trade name" Darocur 1173 ") 0.3 parts. Was mixed and stirred in 500 parts of toluene and dissolved to obtain a solution of the natural rubber pressure-sensitive adhesive composition.

【0022】(粘着テープの作成)上記粘着剤溶液を、
厚さ約38μmのポリエチレンテレフタレート(PE
T)フィルムの片面に塗布し、光強度80mW/cm2
の高圧水銀灯で粘着剤面に5秒間照射した後110℃で
2分間乾燥させて、厚みが50μmの粘着剤層を形成さ
せた粘着テープを得た。
(Preparation of adhesive tape)
About 38 μm thick polyethylene terephthalate (PE
T) Coating on one side of the film, light intensity 80 mW / cm 2
After irradiating the pressure-sensitive adhesive surface with the high pressure mercury lamp for 5 seconds, it was dried at 110 ° C. for 2 minutes to obtain a pressure-sensitive adhesive tape on which a pressure-sensitive adhesive layer having a thickness of 50 μm was formed.

【0023】(実施例2)粘着付与樹脂として、石油樹
脂(荒川化学社製、商品名「アルコンP−100」)1
00部を用いた以外は実施例1と全く同様の方法にて、
粘着テープを得た。
(Example 2) As a tackifying resin, petroleum resin (Arakawa Chemical Co., Ltd., trade name "ALCON P-100") 1
By the same method as in Example 1 except that 100 parts was used,
An adhesive tape was obtained.

【0024】(実施例3)可塑剤として、プロセスオイ
ル(出光興産社製、商品名「KT−40」)30部を用
いた以外は実施例1と全く同様の方法にて、粘着テープ
を得た。
(Example 3) An adhesive tape was obtained in the same manner as in Example 1 except that 30 parts of process oil (manufactured by Idemitsu Kosan Co., Ltd., trade name "KT-40") was used as a plasticizer. It was

【0025】(実施例4)粘着付与樹脂として、石油樹
脂(荒川化学社製、商品名「アルコンP−100」)1
00部、可塑剤として、プロセスオイル(出光興産社
製、商品名「KT−40」)30部を用いた以外は実施
例1と全く同様の方法にて、粘着テープを得た。
(Example 4) As a tackifying resin, petroleum resin (manufactured by Arakawa Chemical Co., Ltd., trade name "ALCON P-100") 1
An adhesive tape was obtained in the same manner as in Example 1 except that 00 parts and 30 parts of process oil (manufactured by Idemitsu Kosan Co., Ltd., trade name "KT-40") were used as a plasticizer.

【0026】(比較例1)トリメチロールプロパントリ
スチオグリコレート(淀化学社製)0.5部を除いた以
外は実施例1と全く同様の方法にて、粘着テープを得
た。
Comparative Example 1 An adhesive tape was obtained in the same manner as in Example 1 except that 0.5 part of trimethylolpropane tristhioglycolate (produced by Yodo Chemical Co., Ltd.) was removed.

【0027】(比較例2)天然ゴム(RSS−NO.
1)を、ミキシングロールで80℃で良く素練りし、ム
ーニー粘度ML1+4 (100℃)が50の素練りゴムを
得た。次いで、上記素練りゴム100部、石油樹脂(日
本ゼオン社製、商品名「クイントンA−100」)10
0部、プロセスオイル(出光興産社製、商品名「DPN
−260」)30部をトルエン500部中に混合攪拌
し、溶解させ、トリフェニルメタントリイソシアネート
(住友バイエル社製、商品名「デスモジュールRE」)
2部を添加し、天然ゴム系粘着剤組成物の溶液を得た。
Comparative Example 2 Natural rubber (RSS-NO.
1) was thoroughly masticated at 80 ° C. with a mixing roll to obtain a masticated rubber having a Mooney viscosity ML 1 + 4 (100 ° C.) of 50. Then, 100 parts of the masticated rubber, petroleum resin (manufactured by Nippon Zeon Co., Ltd., trade name "Quinton A-100") 10
0 parts, process oil (made by Idemitsu Kosan Co., Ltd., product name "DPN
-260 ") 30 parts in 500 parts of toluene by mixing and stirring to dissolve triphenylmethane triisocyanate (Sumitomo Bayer, trade name" Desmodule RE ")
2 parts were added to obtain a solution of the natural rubber-based pressure-sensitive adhesive composition.

【0028】上記粘着剤溶液を、厚さ約38μmのポリ
エチレンテレフタレート(PET)フィルムの片面に塗
布し、110℃で2分間乾燥させて、厚みが50μmの
粘着剤層を形成させ、粘着テープを得た。
The adhesive solution is applied to one side of a polyethylene terephthalate (PET) film having a thickness of about 38 μm and dried at 110 ° C. for 2 minutes to form an adhesive layer having a thickness of 50 μm to obtain an adhesive tape. It was

【0029】(タック力評価、凝集力評価、ゲル分率の
測定、貯蔵安定性評価)上記で得られた各粘着テープ
を、JIS−Z−0237のタック試験法(転球法)に
基づいて、初期タック力を評価した。
(Evaluation of Tack Force, Cohesion Force, Measurement of Gel Fraction, Evaluation of Storage Stability) Each of the pressure-sensitive adhesive tapes obtained above was subjected to the tack test method (ball-ball method) of JIS-Z-0237. The initial tack force was evaluated.

【0030】また、得られた各粘着テープを、25mm
×25mmの大きさにカットし試験片として、該試験片
をSUS−27のステンレス板に貼り付け、40℃恒温
下で試験片の一旦に2kgの荷重をかけ、試験片がずれ
て落下するまでに要した時間を測定し、凝集力の評価を
した。
Further, each of the obtained adhesive tapes was
The test piece was cut into a size of × 25 mm, and the test piece was attached to a stainless steel plate of SUS-27, and a load of 2 kg was applied to the test piece at a constant temperature of 40 ° C. until the test piece slipped and dropped. The time required for the measurement was measured and the cohesive force was evaluated.

【0031】また、得られた粘着テープの粘着剤を、酢
酸エチル中に侵漬し、24時間放置後に残った不溶分の
ゴム成分の重量(乾燥後)と、配合した元のゴムとの重
量割合(重量%)を測定し、ゲル分率評価をした。
The pressure-sensitive adhesive of the obtained pressure-sensitive adhesive tape was immersed in ethyl acetate, and the weight of the insoluble rubber component remaining after standing for 24 hours (after drying) and the weight of the original rubber compounded The ratio (weight%) was measured and the gel fraction was evaluated.

【0032】さらに、上記で得られた各粘着剤溶液を5
0℃恒温下で放置した時の粘度変化を測定し、粘着剤の
貯蔵安定性評価をした。はなかった。以上の評価結果を
表1に示した。
Furthermore, each of the pressure-sensitive adhesive solutions obtained above is mixed with 5
The storage stability of the pressure-sensitive adhesive was evaluated by measuring the change in viscosity when it was left standing at a constant temperature of 0 ° C. There was no. The above evaluation results are shown in Table 1.

【0033】[0033]

【表1】 [Table 1]

【0034】[0034]

【発明の効果】本発明のゴム系粘着剤組成物は、紫外線
を照射することにより、スムーズにゴムの分子鎖が架橋
されるため、凝集力が高くなる。また、粘着剤溶液とし
て保存する場合、イソシアネートなどを添加した系と比
較し、溶液状態で架橋が進行することがないので貯蔵安
定性が良い。
The rubber-based pressure-sensitive adhesive composition of the present invention has a high cohesive force because the molecular chains of rubber are smoothly crosslinked by irradiation with ultraviolet rays. Further, when stored as a pressure-sensitive adhesive solution, storage stability is good because crosslinking does not proceed in a solution state as compared with a system to which isocyanate or the like is added.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ゴム、粘着付与樹脂、可塑剤、多官能チオ
ールおよび光重合開始剤からなる組成物を配合後、紫外
線照射されたことを特徴とするゴム系粘着剤組成物。
1. A rubber-based pressure-sensitive adhesive composition comprising a composition comprising rubber, a tackifying resin, a plasticizer, a polyfunctional thiol and a photopolymerization initiator, and the composition is irradiated with ultraviolet rays.
JP30539793A 1993-12-06 1993-12-06 Rubber-based tackifier composition Pending JPH07157733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30539793A JPH07157733A (en) 1993-12-06 1993-12-06 Rubber-based tackifier composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30539793A JPH07157733A (en) 1993-12-06 1993-12-06 Rubber-based tackifier composition

Publications (1)

Publication Number Publication Date
JPH07157733A true JPH07157733A (en) 1995-06-20

Family

ID=17944635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30539793A Pending JPH07157733A (en) 1993-12-06 1993-12-06 Rubber-based tackifier composition

Country Status (1)

Country Link
JP (1) JPH07157733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019014846A (en) * 2017-07-10 2019-01-31 綜研化学株式会社 Composition, adhesive and adhesive sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019014846A (en) * 2017-07-10 2019-01-31 綜研化学株式会社 Composition, adhesive and adhesive sheet

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