JPH11116862A - Composition for peeling coating film - Google Patents
Composition for peeling coating filmInfo
- Publication number
- JPH11116862A JPH11116862A JP29948097A JP29948097A JPH11116862A JP H11116862 A JPH11116862 A JP H11116862A JP 29948097 A JP29948097 A JP 29948097A JP 29948097 A JP29948097 A JP 29948097A JP H11116862 A JPH11116862 A JP H11116862A
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- vinyl acetate
- methylene chloride
- emulsion
- composition
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、建築物、土木構造物等
の表面に形成された塗膜を剥離することが可能な、塗膜
剥離用組成物に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating film peeling composition capable of peeling a coating film formed on a surface of a building, a civil engineering structure or the like.
【０００２】[0002]
【従来技術】従来より、建築物、土木構造物等の表面に
形成された塗膜を塗り替えの際に旧塗膜を剥離した後、
新しい塗料を塗付することが行われている。塗膜を剥離
する方法には、物理的手法と化学的手法がある。2. Description of the Related Art Conventionally, when a coating film formed on a surface of a building, a civil engineering structure, etc. is repainted, an old coating film is peeled off.
New paint is being applied. There are a physical method and a chemical method for removing the coating film.
【０００３】物理的手法とは、サンダー処理、ブラスト
処理、高圧水噴射、タガネハツリ等の機械や道具を使用
した剥離方法であり、化学的手法とは薬剤を塗付して塗
膜を溶解又は膨潤させ除去する方法である。近年では、
手軽さや粉塵飛散等の問題により化学的手法が良く用い
られるようになっている。[0003] The physical method is a peeling method using a machine or tool such as sanding, blasting, high-pressure water jetting, and a flap, and the chemical method is to dissolve or swell a coating film by applying a chemical. This is a method of removing the toner. in recent years,
Due to problems such as simplicity and dust scattering, chemical methods are often used.
【０００４】このような化学的手法において用いられる
薬剤としては、旧塗膜に浸透して軟化させる効果の強い
有機溶剤が多く使用されており、特に塩化メチレンは一
般的に使用されているものである。As a chemical used in such a chemical method, an organic solvent having a strong effect of penetrating and softening an old coating film is often used, and in particular, methylene chloride is a commonly used one. is there.
【０００５】しかし、塩化メチレンを利用した剥離剤
は、塩化メチレンが揮発し易いために塗膜に十分浸透し
ないうちに揮発してしまい効力を失ってしまうという問
題がある。そのような問題を解決するために、塩化メチ
レン系の剥離剤に剥離促進剤（酸、アルカリ、フェノー
ル等）を添加する試みも行われているが、剥離促進剤自
体の毒性が高く、作業者及び周辺住民への危険性が問題
となっている。さらには、作業後の残留物の取扱いにも
十分な注意が必要であるという問題も残る。[0005] However, the stripping agent using methylene chloride has a problem that since methylene chloride is easily volatilized, it is volatilized before it sufficiently penetrates the coating film and loses its effectiveness. In order to solve such problems, attempts have been made to add a peeling accelerator (acid, alkali, phenol, etc.) to a methylene chloride-based peeling agent. And the danger to nearby residents is a problem. Further, there remains a problem that the handling of the residue after the work requires sufficient care.
【０００６】[0006]
【発明が解決しようとする課題】やはり、塩化メチレン
を利用した剥離剤が塗膜剥離性に優れ安価でもあるた
め、塩化メチレンの効力を持続させる種々の試みが行わ
れている。Since the release agent using methylene chloride is excellent in peelability of the coating film and is inexpensive, various attempts have been made to maintain the effectiveness of methylene chloride.
【０００７】例えば、塩化メチレンに対して、メチルセ
ルロースなどのセルロース類及びパラフィンワックスを
添加して粘性調整及び蒸発抑制を行ったり、塩化メチレ
ンに対して、塩化メチレンに膨潤する粉末状塩化ビニル
系樹脂を添加したものがある。更に、塩化メチレンに低
沸点ケトンおよび粉末状塩化ビニル樹脂を添加したもの
も開示されている。その他、塩化メチレンにカルボキシ
ル基含有樹脂と金属塩を添加し、更にパラフィンワック
ス等の蒸気抑制剤を添加したものが開示されている。For example, a cellulose such as methylcellulose and a paraffin wax are added to methylene chloride to adjust viscosity and suppress evaporation, or methylene chloride is used as a powdery vinyl chloride resin which swells in methylene chloride. Some have been added. Further, there is disclosed a compound obtained by adding a low boiling ketone and a powdery vinyl chloride resin to methylene chloride. In addition, there is disclosed one in which a carboxyl group-containing resin and a metal salt are added to methylene chloride, and a vapor inhibitor such as paraffin wax is further added.
【０００８】しかし、セルロース類及びパラフィンワッ
クスを添加したタイプは、確かに蒸発抑制効果は得られ
るものの、チクソトロピー性に問題があり経時的な貯蔵
安定性や作業時のたれ性に問題があった。また、塩化メ
チレンに粉末状の塩化ビニル系樹脂を添加したタイプの
ものは、塩化ビニル系樹脂が塩化メチレンに馴染みにく
いために、低沸点ケトンなどの溶剤を新たに添加するこ
とが必要となり、更なる臭気問題や環境問題を引き起こ
すことになるので好ましくない。さらには、経時的な安
定性にかけるので剥離剤を長期保存した場合は、ゲル化
や分離が起こるといった問題が見られる。また、カルボ
キシル基含有樹脂と金属塩を添加したタイプは、カルボ
キシル基と金属塩の反応によるゲル化作用を利用したも
のであるが、やはり経時的な貯蔵安定性に欠けるという
問題があった。[0008] However, the type to which celluloses and paraffin wax are added certainly has an evaporation suppressing effect, but has a problem in thixotropy, and has a problem in storage stability over time and sag during operation. In addition, in the case of a type in which a powdery vinyl chloride resin is added to methylene chloride, it is necessary to newly add a solvent such as a low-boiling ketone since the vinyl chloride resin is hardly adapted to methylene chloride. It is not preferable because it causes odor problems and environmental problems. In addition, when the release agent is stored for a long period of time, a problem such as gelation or separation occurs when the release agent is stored for a long time. Further, the type in which the carboxyl group-containing resin and the metal salt are added utilizes the gelling action by the reaction between the carboxyl group and the metal salt, but also has a problem that storage stability over time is lacking.
【０００９】よって、本発明で解決する課題は、 塗膜剥離性、特に剥離剤塗付後の効果の持続性に優
れ、 長期間貯蔵する場合でも、粘度上昇や分離等の問題が
なく貯蔵安定性があり、 剥離薬剤を塗付する場合の粘性及び作業性に優れ、た
れ等の問題がない 塗膜剥離剤を提供することである。[0009] Accordingly, the problem to be solved by the present invention is to provide excellent coating film releasability, in particular, excellent persistence of the effect after application of a release agent, and stable storage even when stored for a long period without problems such as viscosity increase and separation. An object of the present invention is to provide a coating film release agent having excellent properties, excellent viscosity and workability when applying a release agent, and having no problems such as sagging.
【００１０】[0010]
【課題を解決するための手段】本発明者らは、鋭意研究
の結果、塩化メチレンに、パラフィンワックスと非プロ
トン系極性溶剤、酢酸ビニル系粉末エマルションを加え
ることにより、塗膜剥離性に優れ、貯蔵安定性、作業性
に優れる塗膜剥離剤が得られることを見出し、発明を完
成するに至った。Means for Solving the Problems As a result of intensive studies, the present inventors have found that by adding a paraffin wax, an aprotic polar solvent and a vinyl acetate powder emulsion to methylene chloride, the coating film has excellent peelability. They have found that a coating film release agent having excellent storage stability and workability can be obtained, and have completed the invention.
【００１１】したがって、本発明は以下の塗膜剥離剤組
成物に係るものである。Accordingly, the present invention relates to the following coating film remover composition.
【００１２】１．（Ａ）塩化メチレン１００重量部に対
して、 （Ｂ）パラフィンワックスを０．５〜３重量部 （Ｃ）非プロトン系極性溶剤を５〜２０重量部 （Ｄ）酢酸ビニル系粉末エマルションを１〜３０重量部 含有することを特徴とする塗膜剥離用組成物。1. (A) 100 parts by weight of methylene chloride, (B) 0.5 to 3 parts by weight of paraffin wax, (C) 5 to 20 parts by weight of aprotic polar solvent, and (D) 1 to 5 parts of vinyl acetate powder emulsion. A composition for removing a coating film, comprising 30 parts by weight.
【００１３】２．（Ｄ）酢酸ビニル系粉末エマルション
が、酢酸ビニルとベオバとの共重合エマルションを粉末
化したものであることを特徴とする１．記載の塗膜剥離
用組成物。2. (D) The vinyl acetate-based powder emulsion is obtained by pulverizing a copolymer emulsion of vinyl acetate and veova. The composition for removing a coating film according to the above.
【００１４】[0014]
【発明の実施の形態】以下、本発明をその実施の形態に
基づき詳細に説明する。 （Ａ）塩化メチレン 本発明の塗膜剥離剤組成物の中で、塗膜剥離性を発現す
る主成分となるものが塩化メチレンである。剥離性を発
現する溶剤の中でも、優れた剥離性を示し、且つ安定
で、比較的毒性が少ないことや、安価である点からもっ
とも一般的に使用されているものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on its embodiments. (A) Methylene chloride Among the coating film release agent compositions of the present invention, methylene chloride is the main component exhibiting the coating film release property. Among solvents that exhibit releasability, they are the most commonly used solvents because they exhibit excellent releasability, are stable, have relatively low toxicity, and are inexpensive.
【００１５】（Ｂ）パラフィンワックス 本発明の塗膜剥離剤組成物では、蒸発抑制剤としてパラ
フィンワックスを添加する。パラフィンワックスは剥離
剤塗付後、剥離剤の表面に膜を形成して、塩化メチレン
が揮発するのを抑える役目を果たすものである。本発明
で添加するパラフィンワックスは、融点４０〜７０℃の
ものを使用する。(B) Paraffin wax In the coating film remover composition of the present invention, paraffin wax is added as an evaporation inhibitor. After the release agent is applied, the paraffin wax forms a film on the surface of the release agent, and serves to suppress the volatilization of methylene chloride. The paraffin wax added in the present invention has a melting point of 40 to 70 ° C.
【００１６】パラフィンワックスの配合比率は、塩化メ
チレン１００重量部に対して、０．５〜３重量部であ
る。パラフィンワックスが０．５重量部より少なくなる
と、蒸発抑制効果が得られなくなり、逆に３重量部より
多くなると、パラフィンワックスの溶解度が小さいため
に油状分が遊離してしまい、多量に添加してもその効果
が期待できないので好ましくない。The mixing ratio of the paraffin wax is 0.5 to 3 parts by weight based on 100 parts by weight of methylene chloride. If the amount of paraffin wax is less than 0.5 part by weight, the effect of suppressing evaporation cannot be obtained. Conversely, if the amount is more than 3 parts by weight, oily components are liberated due to the low solubility of paraffin wax, so that a large amount is added. Is not preferable because its effect cannot be expected.
【００１７】（Ｃ）非プロトン系極性溶剤 本発明の塗膜剥離剤組成物には、非プロトン系極性溶剤
を添加する。非プロトン系極性溶剤は、塗膜剥離性を持
っているにもかかわらず揮発しにくい特性を持っている
ので塩化メチレンと併せて使用することにより、剥離性
を高める効果と、剥離性を持続する効果を有している。
非プロトン系極性溶剤の例としては、Ｎ，Ｎ−ジメチル
ホルムアミド（ＤＭＦ）、Ｎ，Ｎ−ジエチルホルムアミ
ド（ＤＥＦ）、Ｎ，Ｎ−ジメチルアセトアミド（ＤＭＡ
Ｃ）、１−３−ジメチル−２−イミダゾリジン（ＤＭ
Ｉ）、ジメチルスルホキシド（ＤＭＳＯ）、ヘキサメチ
ルリン酸トリアミド（ＨＭＰＡ）、Ｎ−メチルピロリド
ン（ＮＭＰ）、スルホラン等が挙げられる。(C) Aprotic Polar Solvent An aprotic polar solvent is added to the coating stripping composition of the present invention. The aprotic polar solvent has the property that it is hard to volatilize despite having the coating film peeling property, so it is used in combination with methylene chloride to enhance the peeling property and maintain the peeling property. Has an effect.
Examples of aprotic polar solvents include N, N-dimethylformamide (DMF), N, N-diethylformamide (DEF), N, N-dimethylacetamide (DMA
C), 1-3-dimethyl-2-imidazolidine (DM
I), dimethyl sulfoxide (DMSO), hexamethylphosphoric triamide (HMPA), N-methylpyrrolidone (NMP), sulfolane and the like.
【００１８】非プロトン系極性溶剤は、塩化メチレン１
００重量部に対して、１〜２０重量部添加される。非プ
ロトン系極性溶剤が１重量部より少ない場合、剥離性を
持続させる効果が得られなくなり、２０重量部より多く
なると、塗膜剥離作業時の作業性が悪いので好ましくな
い。The aprotic polar solvent is methylene chloride 1
1 to 20 parts by weight is added to 00 parts by weight. When the amount of the aprotic polar solvent is less than 1 part by weight, the effect of maintaining the releasability cannot be obtained. When the amount is more than 20 parts by weight, the workability at the time of the coating film peeling operation is not preferable.
【００１９】（Ｄ）酢酸ビニル系粉末エマルション 本発明の塗膜剥離剤組成物には、酢酸ビニル系の粉末エ
マルションを添加する。この酢酸ビニル系の粉末エマル
ションとは、酢酸ビニル系のエマルションを粉末化した
ものであり、水に溶解した際には再乳化する、いわゆる
再乳化形エマルションである。(D) Vinyl acetate powder emulsion A vinyl acetate powder emulsion is added to the coating film remover composition of the present invention. The vinyl acetate-based powder emulsion is a so-called re-emulsifying emulsion in which a vinyl acetate-based emulsion is powdered and re-emulsified when dissolved in water.
【００２０】酢酸ビニル系粉末エマルションの製造方法
は、酢酸ビニルモノマーとビニルエステル、不飽和カル
ボン酸エステル、不飽和カルボン酸アミド、不飽和ニト
リル、不飽和カルボン酸、アリル化合物、含窒素化合
物、不飽和スルホン酸、炭化水素等のポリマー類を共重
合して乳化するか、乳化重合をおこなって酢酸ビニル系
エマルションを作製し、更にそのエマルションを粉末化
して製造する。粉末化する方法は、公知の方法によって
行うことが可能である。The method for producing the vinyl acetate powder emulsion includes a vinyl acetate monomer and a vinyl ester, an unsaturated carboxylic acid ester, an unsaturated carboxylic acid amide, an unsaturated nitrile, an unsaturated carboxylic acid, an allyl compound, a nitrogen-containing compound, an unsaturated compound. Polymers such as sulfonic acid and hydrocarbon are copolymerized and emulsified, or emulsion polymerization is performed to prepare a vinyl acetate emulsion, and the emulsion is further pulverized to produce. Powdering can be performed by a known method.
【００２１】その他、酢酸ビニル系エマルションを作製
する際に、アクリル酸エステル、エチレン、ベオバとの
共重合エマルションとすることにより、より優れた性能
が得られる。特に、ベオバとの共重合エマルションを粉
末化したものを使用することにより、貯蔵安定性や作業
性が優れた塗膜剥離剤となるため好ましい。In addition, when a vinyl acetate-based emulsion is prepared, more excellent performance can be obtained by using a copolymerized emulsion with an acrylate, ethylene, and veova. In particular, the use of powdered copolymer emulsion with Beova is preferable since it becomes a coating film release agent having excellent storage stability and workability.
【００２２】酢酸ビニル系粉末エマルションの配合比率
は、塩化メチレン１００重量部に対して、５〜３０重量
部添加する。酢酸ビニル系粉末エマルションの添加量が
５重量部より小さくなると、充分な増粘効果を生じない
ため、経時的な貯蔵安定性や作業時の塗着性が悪くなり
好ましくない。逆に３０重量部より多くなると、粉末エ
マルションが均一に混合できなくなり、製造不可能とな
るので好ましくない。The mixing ratio of the vinyl acetate powder emulsion is 5 to 30 parts by weight based on 100 parts by weight of methylene chloride. If the amount of the vinyl acetate-based powder emulsion is less than 5 parts by weight, a sufficient thickening effect is not produced, so that the storage stability over time and the coating property during work are unfavorably deteriorated. Conversely, when the amount is more than 30 parts by weight, the powder emulsion cannot be uniformly mixed, and the production becomes impossible, which is not preferable.
【００２３】（Ｅ）その他 本発明の塗膜剥離剤組成物には、前述の（Ａ）塩化メチ
レン、（Ｂ）パラフィンワックス、（Ｃ）非プロトン系
極性溶剤、（Ｄ）酢酸ビニル系粉末エマルションのほ
か、一般に塗膜剥離剤に添加される添加剤類を効果に影
響のない範囲で添加することが可能である。添加剤とし
ては、アルコール類、ケトン類、セルロース類などが挙
げられる。一方、剥離促進剤といわれる酸、アルカリ、
フェノール類は毒性が強いので添加するのは好ましくな
い。(E) Others The coating stripper composition of the present invention contains (A) methylene chloride, (B) paraffin wax, (C) an aprotic polar solvent, and (D) a vinyl acetate powder emulsion. In addition, it is possible to add additives that are generally added to the coating film remover within a range that does not affect the effect. Examples of the additives include alcohols, ketones, and celluloses. On the other hand, acids, alkalis called release accelerators,
Phenols are not preferable because they are highly toxic.
【００２４】本発明の塗膜剥離剤組成物は、特に建築
物、土木建造物の表面（壁、床、天井など）に形成され
た塗膜に対して有効であり、水系、溶剤系を問わず種々
の塗膜に対して優れた剥離性を示すものである。特に、
剥離効果の持続性、粘性による塗着性に優れ、高弾性タ
イプの塗膜などの膜厚が大きい塗膜に対しても優れた剥
離性を示すという特徴を持っている。The coating film remover composition of the present invention is particularly effective for coating films formed on the surfaces (walls, floors, ceilings, etc.) of buildings and civil engineering structures. It shows excellent peelability to various coating films. Especially,
It has the characteristics of excellent persistence of peeling effect, excellent coating properties due to viscosity, and excellent peelability even for coating films having a large film thickness such as high elasticity type coating films.
【００２５】[0025]
【実施例】以下に、本発明の実施例を示す。 （実施例１)表１に示す材料を使用して、表２に示す配
合によって、剥離剤用組成物を作製した。即ち、塩化メ
チレン100重量部に対して、パラフィンワックス１．０
重量部、Ｎ，Ｎ−ジメチルホルムアミド５重量部、酢酸
ビニル−エチレン共重合エマルション粉末１０重量部を
添加し、十分に撹拌して剥離用組成物を作製した。Examples of the present invention will be described below. (Example 1) A composition for a release agent was prepared using the materials shown in Table 1 and the formulations shown in Table 2. That is, paraffin wax 1.0 parts by weight based on 100 parts by weight of methylene chloride.
Parts by weight, 5 parts by weight of N, N-dimethylformamide, and 10 parts by weight of a vinyl acetate-ethylene copolymer emulsion powder were added, and the mixture was sufficiently stirred to prepare a release composition.
【表１】 [Table 1]
【表２】 [Table 2]
【００２６】＜試験方法＞ １．組成物の安定性試験 作製した組成物を、５Ｌポリエチレン容器に５ｋｇ充填
し、溶剤が揮発しないように密封して室温２５℃にて３
ヶ月間静置貯蔵を行った。この時、初期、１ヶ月後、２
ヶ月後、３ヶ月後のそれぞれについて２５℃における粘
度を、東京計器株式会社製「ＢＨ型粘度計」にて測定し
た。<Test Method> Stability test of composition The prepared composition was filled into a 5 L polyethylene container in an amount of 5 kg, sealed so that the solvent did not volatilize, and sealed at room temperature at 25 ° C.
They were stored for months. At this time, the initial, one month later,
After 3 months, the viscosity at 25 ° C. was measured using a “BH type viscometer” manufactured by Tokyo Keiki Co., Ltd.
【００２７】２．塗着性試験 ３００×３００×３ｍｍのスレート板に、表３に示すよ
うな防水形複層塗材Ｅの仕様にて各種塗料を塗付後、約
１ヶ月放置したものを試験片とした。作製した試験片を
垂直にして、ローラーにて剥離剤組成物を約１．０ｋｇ
／ｍ2 となるように塗付して、塗着状態の観察を行っ
た。なお、評価は、表４の基準により行った。2. Coating test After applying various paints to a slate plate of 300 × 300 × 3 mm in accordance with the specification of the waterproof type multilayer coating material E as shown in Table 3, a test piece was left for about one month. The prepared test piece was vertically set, and about 1.0 kg of the release agent composition was applied with a roller.
/ M 2, and the state of application was observed. The evaluation was performed according to the criteria shown in Table 4.
【表３】 [Table 3]
【表４】 [Table 4]
【００２８】３．剥離性試験 ３００×３００×３ｍｍのスレート板に、表３に示すよ
うな各種仕様にて各種塗料を塗付後、約１ヶ月放置した
ものを試験片とした。作製した試験片を垂直にして、ロ
ーラーにて剥離剤組成物を約１．０ｋｇ／ｍ2 となるよ
うに塗付して、１時間経過後に、上部から１００ｍｍ程
度までの部分についてスクレーパーによる剥離性の確認
を行った。さらに、２時間経過後に、上部から２００ｍ
ｍ程度までの部分についてスクレーパーによる剥離性の
確認を行った。なお、評価は表５の基準により行った。3. Peelability test After applying various paints on a slate plate of 300 × 300 × 3 mm according to various specifications as shown in Table 3, it was left for about one month to obtain a test piece. The prepared test piece is vertically set, and the release agent composition is applied with a roller to about 1.0 kg / m 2, and after 1 hour, a portion of about 100 mm from the upper portion is peeled off by a scraper. Was confirmed. After 2 hours, 200m from the top
The releasability of a portion up to about m was checked with a scraper. The evaluation was performed according to the criteria shown in Table 5.
【表５】 [Table 5]
【００２９】＜結果＞結果は、表６に示す。<Results> The results are shown in Table 6.
【００３０】（実施例２〜実施例５、比較例１〜比較例
１０）実施例１に準じて剥離剤組成物を作製し、検討試
験を行った。結果は表６、表７に示す。(Examples 2 to 5, Comparative Examples 1 to 10) A release agent composition was prepared in the same manner as in Example 1 and an examination test was conducted. The results are shown in Tables 6 and 7.
【表６】 [Table 6]
【表７】 [Table 7]
【００３１】＜考察＞実施例１〜実施例５は、経時にお
いても粘性に優れていることがわかる。また、垂直面へ
の塗着性にも優れ、各種塗膜の剥離効果の持続性にも優
れた結果となっている。特に、酢酸ビニル−ベオバの共
重合粉末エマルションを使用した実施例３〜実施例５
は、安定性・剥離性共に優れた結果となった。<Consideration> It can be seen that Examples 1 to 5 are excellent in viscosity even with time. In addition, the result is excellent in the applicability to the vertical surface, and excellent in the persistence of the peeling effect of various coating films. In particular, Examples 3 to 5 using vinyl acetate-veova copolymer powder emulsion
Showed excellent stability and peelability.
【００３２】一方、塩化ビニル樹脂の粉末を使用してい
る比較例１は、あまり高い粘度が得られなかったので、
塗着性及び剥離性が悪い結果が得られた。メチルセルロ
ースとアルコールによって増粘させている比較例２は、
初期は高い粘度が得られるものの経時において粘度が低
くなっていく傾向にあり、垂直面への塗着性も余り良く
なかった。特に、剥離効果の持続性が悪いことがわか
る。On the other hand, in Comparative Example 1 using a powder of vinyl chloride resin, a very high viscosity was not obtained.
Poor coatability and peelability resulted in poor results. Comparative Example 2, which is thickened with methyl cellulose and alcohol,
Initially, a high viscosity was obtained, but the viscosity tended to decrease over time, and the applicability to a vertical surface was not so good. In particular, it can be seen that the persistence of the peeling effect is poor.
【００３３】酢酸ビニル−塩化ビニル樹脂と金属塩を添
加した比較例３は、ゲル化してしまい安定性、塗着性、
剥離性の評価が出来なかった。塩化メチレンとパラフィ
ンのみで構成される比較例４は、粘度が低いので塗着性
が悪く、剥離性も悪いことがわかった。In Comparative Example 3 in which a vinyl acetate-vinyl chloride resin and a metal salt were added, gelation was caused and stability, coating property,
Peelability could not be evaluated. Comparative Example 4 consisting only of methylene chloride and paraffin was found to have poor coating properties and poor releasability due to low viscosity.
【００３４】パラフィンワックスがほとんど含まれてい
ない比較例５は、塩化メチレンの蒸発抑制効果がえられ
ないので、特に剥離効果の持続性が悪いことがわかっ
た。パラフィンワックスが大量に含まれている比較例６
は、塩化メチレンに溶解せず、製造が困難であった。In Comparative Example 5, which contained almost no paraffin wax, no effect of suppressing the evaporation of methylene chloride was obtained, and thus it was found that the durability of the peeling effect was particularly poor. Comparative Example 6 containing a large amount of paraffin wax
Was not soluble in methylene chloride and was difficult to produce.
【００３５】その他、非プロトン系極性溶剤を含有しな
い比較例７は、特に剥離効果の持続性が悪く、逆に非プ
ロトン系極性溶剤を多量に含有する比較例８は、剥離作
業時の作業性が悪く、剥離性もあまり良くなかった。酢
酸ビニル系の粉末エマルションをほとんど含有しない比
較例９は、粘度が低く、塗着性が悪く、剥離性も悪いこ
とがわかった。逆に酢酸ビニル系の粉末エマルションを
多量に含有する比較例１０は、塩化メチレンにうまく混
入できず、製造が困難であった。In addition, Comparative Example 7 containing no aprotic polar solvent has a particularly poor persistence of the peeling effect, while Comparative Example 8 containing a large amount of the aprotic polar solvent has a good workability during the peeling operation. However, the peelability was not so good. Comparative Example 9 containing almost no vinyl acetate-based powder emulsion was found to have low viscosity, poor coatability, and poor releasability. Conversely, Comparative Example 10 containing a large amount of a vinyl acetate-based powder emulsion could not be mixed well with methylene chloride, and was difficult to produce.
【００３６】従って、本発明の組成にすることにより、
経時安定性、塗着性に優れ、どのような塗膜であっても
剥離可能な剥離剤組成物を製造可能となることがわかっ
た。Therefore, by making the composition of the present invention,
It has been found that it is possible to produce a release agent composition which is excellent in stability over time and coatability and which can be peeled off any coating film.
【００３７】[0037]
【発明の効果】本発明によれば、塩化メチレン、パラフ
ィン、非プロトン系極性溶剤、酢酸ビニル系粉末エマル
ションを特定比率で配合することにより、水系、溶剤系
を問わず、塗膜剥離性が優れており、特に剥離効果の持
続性や塗付作業時の作業性、塗着性にも優れており、高
弾性タイプの塗膜などの膜厚が大きい塗膜に対しても優
れた塗膜剥離性を示す塗膜剥離剤を提供できるものであ
る。さらに、貯蔵安定性にも優れているという特徴を有
している。According to the present invention, by mixing methylene chloride, paraffin, an aprotic polar solvent, and a vinyl acetate powder emulsion in a specific ratio, the coating film exfoliation property is excellent irrespective of the aqueous or solvent type. In particular, it is excellent in persistence of peeling effect, workability during coating work, and coatability, and excellent film peeling even for coatings with large thickness such as high elasticity type coatings. The present invention can provide a coating film release agent exhibiting properties. Furthermore, it has the feature of being excellent in storage stability.
Claims (2)
て、 （Ｂ）パラフィンワックスを０．５〜３重量部 （Ｃ）非プロトン系極性溶剤を１〜２０重量部 （Ｄ）酢酸ビニル系粉末エマルションを５〜３０重量部 含有することを特徴とする塗膜剥離用組成物。(A) 100 parts by weight of methylene chloride, (B) 0.5 to 3 parts by weight of paraffin wax, (C) 1 to 20 parts by weight of an aprotic polar solvent, and (D) vinyl acetate. A composition for removing a coating film, comprising 5 to 30 parts by weight of a powder emulsion.
酢酸ビニルとベオバとの共重合エマルションを粉末化し
たものであることを特徴とする請求項１記載の塗膜剥離
用組成物。2. The method of claim 2, wherein (D) the vinyl acetate powder emulsion is
2. The composition according to claim 1, wherein the copolymerized emulsion of vinyl acetate and Beova is powdered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29948097A JP3392332B2 (en) | 1997-10-15 | 1997-10-15 | Composition for peeling coating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29948097A JP3392332B2 (en) | 1997-10-15 | 1997-10-15 | Composition for peeling coating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11116862A true JPH11116862A (en) | 1999-04-27 |
| JP3392332B2 JP3392332B2 (en) | 2003-03-31 |
Family
ID=17873126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29948097A Expired - Fee Related JP3392332B2 (en) | 1997-10-15 | 1997-10-15 | Composition for peeling coating film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3392332B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006117892A (en) * | 2004-10-19 | 2006-05-11 | Eco Cosmo:Kk | Coating film remover |
| JP2007070436A (en) * | 2005-09-06 | 2007-03-22 | Three Bond Co Ltd | Releasing agent composition |
| JP2016131966A (en) * | 2015-01-22 | 2016-07-25 | 大成建設株式会社 | Removal method of water-resistant layer using coating film release agent |
| JP2019178226A (en) * | 2018-03-30 | 2019-10-17 | ベック株式会社 | Peeling agent composition |
-
1997
- 1997-10-15 JP JP29948097A patent/JP3392332B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006117892A (en) * | 2004-10-19 | 2006-05-11 | Eco Cosmo:Kk | Coating film remover |
| JP4748972B2 (en) * | 2004-10-19 | 2011-08-17 | 株式会社エココスモ | Film remover |
| JP2007070436A (en) * | 2005-09-06 | 2007-03-22 | Three Bond Co Ltd | Releasing agent composition |
| JP2016131966A (en) * | 2015-01-22 | 2016-07-25 | 大成建設株式会社 | Removal method of water-resistant layer using coating film release agent |
| JP2019178226A (en) * | 2018-03-30 | 2019-10-17 | ベック株式会社 | Peeling agent composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3392332B2 (en) | 2003-03-31 |
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