201109409 、發明說明： 【發明所屬之技術領域】 本發明係關於-種可冷剥離型黏著片，盆可 時’藉由短暫加熱可暫時ϋ定被黏著體，t 可輕易與被黏著體“ S 者片可重複使用多次為其特徵。 【先前技術】 傳統上已知用於電子零件加產步驟巾，暫時固定電子 致可分為，可熱剥離型感壓黏著片及可冷剥 卿r胃「可冷剥離型黏著片」係與「可熱剥離型感壓黏著片」 區&’依使时式而言，「可熱讎型感壓黏著片」可在室 ϋ約20〜30 c)下產生黏著效果’以暫時固定電子零件，待 =零件加工步驟完紐，加熱至某—溫度使黏著力喪失，並 吏電子零件自黏著片上剥離（分離），而回收所加工完成的電子 ，件。，單來說，「可熱剥離型感壓黏著片」在加熱後可產生 與破黏著體剥離（分離）的效果，而「可冷剥離型黏著 卻後可產生與被黏著體剥離（分離）的效果。 7 可冷剥離型黏著>1包含—基片以及—含有可側鍵結晶黏 者層之黏著片（我國專利公告號碼：471135、1265189、 1228533、362226等）。該黏著片在使用時需加熱至一定溫度 以上才能產生黏著效果’以暫時固定電子零件，待電子二 工^驟完成後’將黏著片冷卻至一定溫度以下，該黏著片上 黏著層關鏈結晶的緣故’可使電子零件自黏著片上剥 離），而回收所加工完成的電子零件。 —根據我國專利公告號碼471135所述，該專利提供—種新 黏著片’以解決多層陶瓷電容器切割步驟時電極偏移情形，其 解決方式*，提®黏料上可側鏈結晶黏著層之雜模數(g,、 201109409 來將降低黏著劑帽鏈結晶的比率，使得如 ^片冷部後的黏著力不能降到一極小值，也 j 稷使用的次數。 +低者片可重 尤其在目前電子零件有輕薄短小的趨勢， =電容器，極微小輕薄’換句話說，如果可冷剥離型$ ° 不f低’則微小峨容器將無法i易*丨 進而影響生=減烟術電容器之回收率， 【發明内容】 # [發明所欲解決之問題] 何需共一種可冷剥離型黏著片，其可在任 至InH f可暫時固定被黏著體，當溫度冷卻 f至，皿（大力20〜30〇時，該黏著片之黏著力可降至一^, [解決問題之技術手段] 少含ϊ據ί研究的結果，發現可側鏈結晶黏著層至 為第-級㈣觀)概，翔鏈心^^域内（亦稱 較佳，該聚合物之重量=7曰f曰I'60至9〇抑 2,咖，_。該可觸結《umu°s°°4:°所i 得，該單體混合物包含約15至43 卞早體此&物所衣 2基==土逆基:2 * [發明之效果] 以上述該可側鏈結晶聚合物為黏著劑所構成的可侧鍵結晶 201109409 獅型黏著片’比較容易有侧鏈結晶情形產生， ，該可冷剥離型勒著片在重複使用時，比較不會有 離(八^)使被黏者體比較能夠自該可冷獅型黏著片上輕易剥 且該黏著片可重複使用多次為其特徵。 [貫施本發明之最佳形態] 明。ϊ下郷態’必要時參顚式加以詳細說 避麵物细—之圖號。 及該麵型，片為如第1圖所示，具有基材2 4，在^材2盘^目(早面)上形成含有可側鏈結晶黏著層 丨賴晶賴4糾有雜λ 。 基材可作為可側鏈結晶黏著層等之支持母體使用。其姑 塑膠之薄膜或片材等塑膠系基材。該等塑膠之： ^材料^如將聚乙稀(PE)、聚丙稀⑽、乙丙稀^ 旨共Λ物_等α.作為單體成份之烯煙 :本乙二醇峨τ)、聚萘二甲酸乙二醇醋 二等2酿種==_(_)等。該等材料可單獨使用， 基材之厚度、強度或柔軟性可對應使用目的作適當之選 J，例如一般在500微米（_)以下(例如1至 米：更Γ ΐ 25°微米，但是並不只限二匕。Ϊ 材了為單層之形悲，亦可為具有多層之形熊。 可側鏈結晶獻荽厝 〜、 y側鏈結晶黏著層4至少含有—種可側鏈結晶聚合物 其黏著劑成分，該聚合物結雜點發生在約4()ΐ至⑼。c之溫 201109409 度範圍内（亦稱為第一級熔融轉變）較佳，其側鏈結晶熔化埶 60至90焦耳/克(j/g)較佳。 此處所使用之『結晶炫點』或是『第一級溶融轉變』 意旨於該溫度下進行一種均衡方法，使一種聚合物最初以規 陣列排列之特定部分變得無規律之溫度。 該聚合物係一種重量平均分子量約^ 000 000至 2, 000, 000之可側鏈結晶聚合物為佳。 該可侧鏈結晶聚合物至少包括一種丙烯酸烧基醋或甲美 Ξΐϊΐ基㈣合物，其具有包括16個碳原子數以上之直i 烧基作為側鍵。 鍵結晶聚合物可由一種單體混合物所製得，該單體 重量份之丙稀酸烧基s旨或甲基丙稀酸烧 ί ΐ體其具有1至4個碳原子數之烧基，約2至10重量 t之3 ^基之丙烯酸或甲基丙烯酸單體，以及約55至75 絲贼f基丙騎絲料體，其具有18個碳 原子數之直鏈烷基。 劑除了至少包含—種可側_晶聚合物成分之外，對 r匕：ΐϋΐίί亦7含有交聯劑(例如聚異氰_、烧基驗 香t環氧化合物等）、增黏賦予劑(例如由松 奶或、本、曰谷性酚系樹脂等組成，於常溫為固體、半固 體m)、增_、填細、抗老化解適當添加劑。 或添加ί如蝴彳、必要_溶劑 後述之要，用溶劑或添加劑等混合物，塗抹於 黏著3 面之方法為將上述混合物塗抹於彈性 層。可側•士晶黏：开㊁:性黏/層上之可側鏈結晶黏著 罐—黏者層可為早層、多層之任何一種。 黏著黏著層之厚度’可根據所要求之黏著效果盘被 麵^的剥離效果作適當調整，較好為5至難米㈤。 201109409 以為單層，亦可多層所構^ w(_)。雜黏著層可 分隔材 之保^材料 。 ' 、、、 鍵’、口日日，占者層4 可使用分隔材 劑表面處理之塑膠薄膜或紙等剥離 分隔叙基材使用。 等亦無特別之限制。 法形成。又’分隔材之厚度 之可冷剥離型黏著片可具有雙面黏合 :，，可冷剥離型黏著片以基材之單面為形成^^圭： 著層形態之可冷剥離型黏著片較佳。 曰黏 Φ [實施例] 以下，以實_絲顧本發賴更詳細之刻 本發明亚不只限於鮮實侧。在下顺述 者均意指『重量份』。 Τ任订徒及伤』 Α.製備可侧鏈結晶聚合物 合成實施例1 於反應槽中加入125份的乙酸乙醋、25份的丙酮 的丙烯酸十八絲醋、40份的丙埽酸甲基_、5 〇. 2份的過氣化二苯曱酸，加熱至肌反應5小時3 可側鏈結晶聚合物，其重量平均分子量約丨，5QM⑽，= 點約40°C ’側鏈結晶溶化熱為64 J/g。 曰曰 201109409 的丙槽中加t125份的乙酸乙醋、25份的丙嗣、60份 0 2份的欠烧基醋、35份的丙婦酸甲基醋、5份的丙烯酸及 可側苯加熱至75°C反應5㈣後可製得一 點β^u^Ba聚&物，其重量平均分子量約丨，500,000，結晶熔 ；f=C’側鏈結雖化熱為73J/g。 例 3 '25'70^ ο 2伶& 烷基!·曰、25份的丙烯酸甲基酯、5份的丙烯酸及201109409, the invention description: [Technical Field] The present invention relates to a cold-peelable adhesive sheet, which can be temporarily set by the short-term heating, and can be easily adhered to the adherent body. The film can be reused many times for its characteristics. [Prior Art] It is conventionally known to be used for the step of adding electronic parts, and the temporary fixed electron can be divided into a heat-peelable pressure-sensitive adhesive sheet and a cold-peelable sheet. The stomach "cold-peelable adhesive sheet" and the "heat-peelable pressure-sensitive adhesive sheet" area & 'in terms of the time, the "hot-squeeze pressure-sensitive adhesive sheet" can be used in the room temperature of about 20~30 c) Produce an adhesive effect to temporarily fix the electronic parts, wait until the part processing step is completed, heat to a certain temperature, the adhesion is lost, and the electronic parts are peeled off (separated) from the adhesive sheet, and the processed electrons are recovered. , pieces. In the meantime, the "heat-peelable pressure-sensitive adhesive sheet" can be peeled off (separated) from the detached body after heating, and the "cold-peelable type can be peeled off (separated) after being adhered to the adherend. The effect of the film 7 cold-peelable adhesion >1 comprises - the substrate and the adhesive sheet containing the layer of the crystal bond of the side bond (China Patent Publication No.: 471135, 1265189, 1228533, 362226, etc.). The adhesive sheet is in use. When it is necessary to heat up to a certain temperature to produce an adhesive effect, 'to temporarily fix the electronic parts, and after the completion of the electronic second work, the adhesive sheet is cooled to a temperature below a certain temperature, and the adhesive layer on the adhesive sheet is crystallized for the sake of crystallization. The parts are peeled off from the adhesive sheet, and the processed electronic parts are recovered. - According to the Chinese Patent Publication No. 471135, the patent provides a new adhesive sheet to solve the electrode offset situation in the cutting step of the multilayer ceramic capacitor, and the solution is solved. Mode*, the number of modules of the side-chain crystalline adhesive layer on the adhesive material (g, 201109409) will reduce the ratio of the crystal of the adhesive cap chain, so that The adhesion after the part can not be reduced to a minimum value, but also the number of times used. + The low piece can be heavy, especially in the current electronic parts have a thin and short trend, = capacitor, very small and thin 'in other words, if it can be cold The peeling type $ ° is not f low', then the micro-tank container will not be able to be easy to affect the recovery rate of the raw-smoke-reducing capacitor, [Summary of the invention] # [The problem to be solved by the invention] Type of adhesive sheet, which can temporarily fix the adherend at any time until InH f, when the temperature is cooled to f, the dish (the force of the adhesive sheet can be reduced to a ^2 when vigorously 20~30〇, [Technical means for solving the problem] According to the results of ί research, it was found that the side chain crystal adhesion layer is in the first-order (four) view, and the Xiang chain heart is in the domain (also known as the weight of the polymer = 7曰f曰I). '60 to 9 2 2, coffee, _. The tangible knot "umu °s ° ° 4: ° obtained, the monomer mixture contains about 15 to 43 卞 early body this & = soil reverse base: 2 * [Effect of the invention] The side bond crystal formed by the above-mentioned side chain crystalline polymer as an adhesive 201109409 lion-type adhesive sheet 'It is easier to have side chain crystallization, and the cold-peelable strip can be easily peeled off when it is reused. Moreover, the adhesive sheet can be repeatedly used for its characteristics. [The best form of the invention is as follows]. The lower part of the ' ' ' ' 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 必要 及 及 及 及 及 及 及 及 及 及 及The sheet has a substrate 24 as shown in Fig. 1, and forms a side-chain crystalline adhesive layer on the surface of the material 2 (early surface). It can be used as a support matrix for side chain crystal adhesion layers, etc. It is a plastic substrate such as a film or sheet of plastic. Such plastics: ^Materials such as polyethylene (PE), polypropylene (10), ethylene propylene diene, conjugates, etc. α. As a monomeric component of the olefin: this ethylene glycol 峨τ), poly Naphthalene diethylene glycol vinegar second-class 2 brewing ==_(_) and so on. The materials may be used alone, and the thickness, strength or softness of the substrate may be appropriately selected according to the purpose of use, for example, generally below 500 micrometers (-) (for example, 1 to meters: more ΐ 25 ° micrometers, but It is not limited to two. The material is a single layer of sadness, or it can be a multi-layered bear. The side chain crystallizes ~, y side chain crystal adhesion layer 4 contains at least one kind of side chain crystalline polymer The adhesive component of the polymer is preferably in the range of about 4 () ΐ to (9). The temperature of the temperature is 201109 409 degrees (also referred to as the first-stage melt transition), and the side chain crystals are melted 埶 60 to 90. Joules per gram (j/g) is preferred. As used herein, "crystalline smudge" or "first-order melt transition" is intended to perform an equalization method at this temperature to specifically align a polymer in a regular array. The portion becomes an irregular temperature. The polymer is preferably a side chain crystalline polymer having a weight average molecular weight of about 10,000 to 2,000, 000. The side chain crystalline polymer includes at least one acrylic ketone vinegar. Or a methitin (tetra) compound having 16 a direct atomic group of more than one atom is used as a side bond. The bond crystal polymer can be prepared from a monomer mixture, the monomer weight part of the acrylic acid group or the methyl acrylate acid ΐ body having a calcining group of 1 to 4 carbon atoms, an acrylic acid or methacrylic monomer of about 2 to 10 parts by weight, and a molecular weight of about 55 to 75 thieves, having 18 carbons A linear alkyl group having an atomic number. In addition to at least one type of side-crystal polymer component, the agent contains a crosslinking agent (for example, polyisocyanate, pyrolysis, t-epoxy compound). Etc.), a thickening-imparting agent (for example, consisting of pine milk or this, gluten-based phenolic resin, solid at room temperature, semi-solid m), increasing _, filling, anti-aging solution, or adding ί. Such as butterfly, necessary _ solvent, the latter, with a mixture of solvents or additives, applied to the adhesive surface of the three sides by applying the mixture to the elastic layer. Can be side / Shi crystal adhesion: open two: sexual adhesion / layer Side chain crystallized adhesive can - the adhesive layer can be any of the early layer and the multilayer. The thickness of the adhesive layer is ' According to the required adhesive effect, the disc is properly adjusted by the peeling effect of the surface, preferably from 5 to 5% (5). 201109409 It is considered that the single layer can also be constructed by multiple layers ^ w(_). The adhesive layer can be separated by the protective material ^ Materials. ' , , , key ', mouth day, occupant layer 4 can be used to separate the substrate using a plastic film or paper such as a separator. The surface is also not limited. The cold-peelable adhesive sheet having the thickness of the material may have double-sided bonding: the cold-peelable adhesive sheet may be formed on one side of the substrate. Preferably, the cold-peelable adhesive sheet having a layered shape is preferred. Viscosity Φ [Examples] Hereinafter, the present invention is not limited to the fresh side in more detail. In the following, the meanings are as follows.订 订 订 订 及 及 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备 制备. Base _, 5 〇. 2 parts of pervaporated diphenyl phthalic acid, heated to muscle reaction for 5 hours 3 side chain crystalline polymer, its weight average molecular weight is about 丨, 5QM (10), = about 40 ° C 'side chain crystallization The heat of fusion is 64 J/g.曰曰201109409 in the tank 140 add t125 parts of ethyl acetate, 25 parts of propionate, 60 parts of 0 2 parts of under-burning vinegar, 35 parts of methyl vinegar methyl vinegar, 5 parts of acrylic acid and benzene After heating to 75 ° C reaction 5 (four), a little β?u^Ba poly & material having a weight average molecular weight of about 丨, 500,000, crystal melting; f=C' side chain heat of 73 J / g. Example 3 '25'70^ ο 2伶& Alkyl!·曰, 25 parts of methyl acrylate, 5 parts of acrylic acid and
的過氧化二苯甲酸，加熱至75°C反應5小時後可製得- 點聚合物’其重量平均分子量約1，職咖，結晶炼 ，約46C，側鏈結晶熔化熱為81 J/g。 4ΐ&ί^14 於反應槽中加入125份的乙酸乙g旨、25份的丙酮、乃份 ^酸权絲g旨、⑼份的丙烯酸f基酷、5份的丙婦酸及 .2伤的過氧化二苯甲醯，加熱至75〇C反應5小時後可製得一 晶f合物’其重量平均分子量約1，咖，咖，結晶熔 ..，'占、力48 C，側鏈結晶熔化熱為87 J/g。 合成實施你丨fi =反應槽中加入125份的乙酸乙酯、25份的丙酮、5〇份 的丙烯酸十八烷基酯、45份的丙烯酸曱基酯、5份的丙烯酸及 0. 2份的過氡化二苯曱醯，加熱至75艺反應5小時後可製得一 可側鏈結晶聚合物，其重量平均分子量約丨，6〇〇, 〇〇〇，^晶 點約38°C，側鏈結晶熔化熱為54 j/g。 σ Β.製備可冷剝離型黏著片 實施例1 將一種於甲苯中含有丙烯酸2-乙基己酯/丙烯酸丁酯/曱 基丙烯酸曱酯/丙烯酸2-羥基乙酯（含1份之聚異氰酸 劑)之溶液，以-層乾厚度為5微米（_)塗佈於厚度為 201109409 米（ym)之聚對苯二曱酸乙二醇酯（PET)薄膜上，並使乾燥以得 到一個似橡膠之彈性黏著層。 將上述合成實施例1所製得之聚合物取出100份’並與 0. 3份之聚異氰酸酯交聯劑混合後，以一層乾厚度為15微米 (//m)塗佈在上述的彈性黏著層上，以製得可冷剝離型黏著 實施例2 將一種於曱苯中含有丙烯酸2-乙基己酯/丙烯酸丁酯/甲 基丙烯酸曱酯/丙烯酸2-羥基乙酯（含丨份之聚異氰酸酯交聯 劑）之溶液，以一層乾厚度為5微米（//m)塗佈於厚度為1〇〇微 米（_)之聚對苯二曱酸乙二醇醋（PET)薄膜上，並使乾燥以得 • 到一個似橡膠之彈性黏著層。 將上述合成實施例2所製得之聚合物取出1〇〇份，並與 0. 3份之聚異氰酸酯交聯劑混合後，以一層乾厚度為15微^ (μηι)塗佈在上述的彈性黏著層上，以製得可冷剝離型黏著片。 實施例3 將一種於甲苯中含有丙烯酸2-乙基己酯/丙烯酸丁g旨/甲 基丙烯酸曱酯/丙烯酸2-羥基乙酯（含丨份之聚異氰酸酯交聯 劑）之洛液’以一層乾厚度為5微米（"m)塗佈於厚度為微 米（// m)之聚對苯二甲酸乙二醇酯（PET)薄膜上，並使乾燥以得 ^ 到一個似橡膠之彈性黏著層。 將上述合成實施例3所製得之聚合物取出1〇〇份’並與 0.3份之聚異氰酸酯交聯劑混合後，以一層乾厚度為ι5微米 (_)塗佈在上述的彈性黏著層上，以製得可冷剝離型黏著心 實施例4 將一種於甲笨中含有丙烯酸2-乙基己酯/丙稀酸丁酷/甲 基丙烯酸曱酯/丙烯酸2-羥基乙酯（含丨份之聚異氰酸酯交聯 劑）之溶液’以一層乾厚度為5微米（"m)塗佈於厚度為微 米（y m)之聚對苯二曱酸乙二醇酷（pET )薄膜上，並使乾燥以得 到一個似橡膠之彈性黏著層。 將上述合成實施例4所製得之聚合物取出1〇〇份，並與 201109409 0. 3伤之聚異氣酸g旨交聯劑混合後’以一層乾厚度為μ微卡 (/zm)塗佈在上述的彈性黏著層上，以製得可冷剝離型黏著^ 比較例 將一種於曱本中含有丙稀酸2-乙基己g旨/丙稀酸丁醋/甲 基丙烯酸曱酯/丙烯酸2-羥基乙酯（含1份之聚異氰酸酯交聯 劑）之溶液，以一層乾厚度為5微米（#m)塗佈於厚度為丨卯^ 米（/zm)之聚對苯二甲酸乙二醇酯（PET)薄膜上，並使乾燥以^ 到一個似橡膠之彈性黏著層。 ’、于Dibenzoic acid, heated to 75 ° C reaction for 5 hours can be obtained - point polymer 'its weight average molecular weight of about 1, professional coffee, crystal refining, about 46 C, side chain crystal heat of fusion is 81 J / g . 4ΐ&ί^14 Add 125 parts of acetic acid to the reaction tank, 25 parts of acetone, aliquots of acid weight, (9) parts of acrylic acid f-based, 5 parts of propylene glycol and .2 wounds The benzamidine peroxide can be prepared by heating to 75 ° C for 5 hours to obtain a crystalline compound. Its weight average molecular weight is about 1, coffee, coffee, crystal melting.., 'occupying, force 48 C, side The melting heat of the chain crystal was 87 J/g.份份。 The reaction 丨 fi = reaction tank was added 125 parts of ethyl acetate, 25 parts of acetone, 5 parts of octadecyl acrylate, 45 parts of decyl acrylate, 5 parts of acrylic acid and 0.2 parts After the reaction of heating to 75 art reaction for 5 hours, a side chain crystalline polymer having a weight average molecular weight of about 丨, 6 〇〇, 〇〇〇, ^ crystal point of about 38 ° C can be obtained. The side chain crystal melting heat is 54 j/g. σ Β. Preparation of cold peelable adhesive sheet Example 1 One containing 2-ethylhexyl acrylate / butyl acrylate / decyl acrylate / 2-hydroxyethyl acrylate (containing 1 part of polyiso) in toluene a solution of a cyanic acid solution, coated on a polyethylene terephthalate (PET) film having a thickness of 201109409 m (ym) at a dry thickness of 5 μm (_), and dried to obtain A rubbery elastic adhesive layer. The polymer obtained in the above Synthesis Example 1 was taken out in 100 parts' and mixed with 0.3 parts of the polyisocyanate crosslinking agent, and then coated with a layer of dry thickness of 15 μm (//m) in the above elastic adhesion. On the layer, a cold peelable adhesive is prepared. Example 2 contains 2-ethylhexyl acrylate/butyl acrylate/imyl methacrylate/2-hydroxyethyl acrylate in benzene. a solution of a polyisocyanate cross-linking agent) is applied to a polyethylene terephthalate (PET) film having a thickness of 1 μm (_) in a thickness of 5 μm (//m). And dry it to a rubbery elastic adhesive layer. The polymer obtained in the above Synthesis Example 2 was taken out in one portion and mixed with 0.3 parts of the polyisocyanate crosslinking agent, and then coated with a layer of a dry thickness of 15 μM (μηι). Adhesive layer is formed to obtain a cold peelable adhesive sheet. Example 3 A solution containing 2-ethylhexyl acrylate/acrylic acid butyl methacrylate/2-hydroxyethyl acrylate (containing a polyisocyanate cross-linking agent) in toluene was used. A layer of 5 μm thick ("m) is applied to a polyethylene terephthalate (PET) film having a thickness of (μm) and dried to obtain a rubber-like elasticity. Adhesive layer. The polymer obtained in the above Synthesis Example 3 was taken out in 1 part and mixed with 0.3 part of the polyisocyanate crosslinking agent, and then coated on the above-mentioned elastic adhesive layer with a dry thickness of 5 μm (_). To obtain a cold peelable adhesive. Example 4 A 2-ethylhexyl acrylate / butyl acrylate / methacrylate / 2-hydroxyethyl acrylate (containing hydrazine) a solution of a polyisocyanate crosslinker) coated on a polyethylene terephthalate (pET) film having a thickness of 5 μm (ym) and having a thickness of 5 μm (ym) Dry to obtain a rubbery elastic adhesive layer. The polymer obtained in the above Synthesis Example 4 was taken out in one portion and mixed with the 201109409 0.33 polyisoxamic acid g-crosslinking agent, and the thickness of the layer was μ microcard (/zm). Coated on the above-mentioned elastic adhesive layer to obtain a cold peelable adhesive. Comparative Example A type of urethane 2-ethylhexyl acrylate / butyl acrylate / methacrylate a solution of 2-hydroxyethyl acrylate (containing 1 part of polyisocyanate crosslinker) coated with a thickness of 5 μm (#m) onto poly(p-phenylene) having a thickness of 丨卯^ m (/zm) A film of formic acid glycol (PET) is applied and allowed to dry to a rubbery elastic adhesive layer. ',to
將上述合成實施例5所製得之聚合物取出100份’並與 0. 3份之聚異氰酸酯交聯劑混合後，以一層乾厚度為15微^ (#m)塗佈在上述的彈性黏著層上，以製得可冷剝離型黏著片二 評估試驗 在60°C環境中，將25微米（//m)聚對苯二甲酸乙二醇酯 (PET)薄膜黏貼於該可冷剝離型黏著片上，並在⑼。c環境中^ 試聚對苯二甲酸乙二醇酯（PET)薄膜之18〇。剝離強度荖 力）（g/25mm)。 在+60°C環境中’將25微米（/ζπΟ聚對苯二甲酸乙二醇酉旨 (PET)薄膜黏貼於該可冷剝離型黏著片上，再冷卻至23。匕約5 为在里後，並在23 C環境中測試聚對苯二甲酸乙二醇酯（pm)薄 膜之”180剝離強度（黏著力）（g/25腿），並紀錄“可重複使用 次數”。 對25魅(薄膜黏菩力之刺詁方法 >如下列所，來測量相對於25微米（"m；)聚對苯二甲酸乙 二醇^ (PET)薄膜之18〇。剝離強度(黏著力）(g/25mm) 。評估結 果,J不於表1之‘6〇。(：黏著力（g/25mm)，，及“23t黏著 (g/25mm)” 攔中。 將25微米（#m)輯笨二曱酸乙二醇酷（pET)薄膜黏貼 於實施例和比較例中所得狀每健著# (25mm寬）的可側鍵 201109409 結晶之黏著層上’再以2公斤滾輪各來回滾壓一次，静置2〇〜3〇 分鐘後’測里25微米（//π〇 I對本二甲酸乙二醇g旨（pet)薄膜 之180剝離強度(黏著力）(g/25mm)(剝離速率，溫^ 度23±2°C，相對濕度：65±5% RH)。以上所述為目前業界使= 之測試評估方式。 表1 聚合物 單體比例 60°C黏著力 (g/25mm) 23 C黏著力 (g/25mm) 可重複 使用次數 實施例1 C18A/C1A/AA 55/40/5 350 5 10 實施例2 C18A/C1A/AA 60/35/5 305 3 12 實施例3 C18A/C1A/AA 70/25/5 250 2 15 實施例4 C18A/C1A/AA 75/20/5 210 1.5 15 比較例 C18A/C1A/AA 50/45/5 400 50 3 表1中’ C18A表示丙浠酸十八烧基醋；cia表示丙稀酸甲 基酯；AA表示丙烯酸。 實施例1、2、3、4與比較例1比較後，我們可以發現，當 可側鏈結晶聚合物中所含之丙烯酸十八烷基酯單體為55至75 份時，其“23°C黏著力”能降至一極小值，且“可重複使用次 數能提尚至1〇次以上，而達成本發明目的及功效，係為择 201109409 ，-種可冷藝迦料，其可在任何f Ϊ可1時__體，纽料輕级LAt =The polymer obtained in the above Synthesis Example 5 was taken out in 100 parts' and mixed with 0.3 parts of the polyisocyanate crosslinking agent, and then coated with a layer of dry thickness of 15 μm (#m) in the above elastic adhesion. On the layer, a cold peelable adhesive sheet 2 evaluation test was performed, and a 25 μm (//m) polyethylene terephthalate (PET) film was adhered to the cold peelable type in a 60 ° C environment. Adhesively on the piece and at (9). In the environment c, try to laminate 18 对 of polyethylene terephthalate (PET) film. Peel strength) (g/25mm). In a +60 ° C environment, a 25 μm (/ζ π Ο polyethylene terephthalate (PET) film was adhered to the cold peelable adhesive sheet, and then cooled to 23. 匕 about 5 is in the inside And test the "180 peel strength (adhesion) (g/25 leg) of polyethylene terephthalate (pm) film in 23 C environment, and record the "reusable times". Method for the adhesion of the film to the bodhisattva of the film > as described below, the measurement of the peel strength (adhesion) relative to the 25 μm ("m;) polyethylene terephthalate (PET) film (adhesion) g/25mm). The evaluation result, J is not in the '6〇 of Table 1. (: adhesion (g / 25mm), and "23t adhesion (g / 25mm)" in the block. Will 25 micron (#m) The stearic acid succinate (pET) film was adhered to the examples and comparative examples, and each of the ##25mm wide side keys 201109409 crystallized adhesive layer was rolled back and forth with 2 kg of rollers. Once, after standing for 2 〇 to 3 〇 minutes, the measurement is 25 μm (//π〇I vs. the polyethylene diacetate g (pet) film 180 peel strength (adhesion) (g/25 mm) (peeling rate) , temperature ^ 23 ± 2 ° C, relative humidity: 65 ± 5% RH). The above is the current industry test = evaluation method. Table 1 polymer monomer ratio 60 ° C adhesion (g / 25mm) 23 C adhesion (g /25mm) Reusable times Example 1 C18A/C1A/AA 55/40/5 350 5 10 Example 2 C18A/C1A/AA 60/35/5 305 3 12 Example 3 C18A/C1A/AA 70/25 /5 250 2 15 Example 4 C18A/C1A/AA 75/20/5 210 1.5 15 Comparative Example C18A/C1A/AA 50/45/5 400 50 3 In Table 1, 'C18A stands for arsenic acid octadecyl vinegar ; cia represents methyl acrylate; AA represents acrylic acid. After comparing Examples 1, 2, 3, and 4 with Comparative Example 1, we can find that octadecyl acrylate is included in the side chain crystalline polymer. When the ester monomer is 55 to 75 parts, the "23 ° C adhesion" can be reduced to a minimum value, and "the number of reusable times can be increased to more than 1 time, and the object and effect of the present invention are achieved. Select 201109409, a kind of cold art material, which can be used in any f Ϊ 1 __ body, the new material light grade LAt =
Hi 可枝—極树，所料㈣與被黏著 刀離並且義者片可重複使用多次為其特徵。 【圖式簡單說明】 第1圖為本發明可冷剥離型黏著片之示意圖。 【主要元件符號說明】 基材 可側鏈結晶黏著層 可冷剥離型黏著片 彈性黏著層 分隔材Hi can be branched - the tree, which is expected to be separated from the adhesive knife and the repetitive piece can be reused multiple times. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a cold peelable adhesive sheet of the present invention. [Main component symbol description] Substrate can be side chain crystal adhesive layer Cold peelable adhesive sheet Elastic adhesive layer Separator
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