JPS6117553B2 - - Google Patents
Info
- Publication number
- JPS6117553B2 JPS6117553B2 JP7715081A JP7715081A JPS6117553B2 JP S6117553 B2 JPS6117553 B2 JP S6117553B2 JP 7715081 A JP7715081 A JP 7715081A JP 7715081 A JP7715081 A JP 7715081A JP S6117553 B2 JPS6117553 B2 JP S6117553B2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- water
- film
- absorbing polymer
- forming substance
- 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
Links
- 239000003973 paint Substances 0.000 claims description 38
- 239000000126 substance Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000004480 active ingredient Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 4
- -1 acrylic compound Chemical class 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- 238000010422 painting Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229940047670 sodium acrylate Drugs 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 108010009736 Protein Hydrolysates Proteins 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- NPERTKSDHFSDLC-UHFFFAOYSA-N ethenol;prop-2-enoic acid Chemical compound OC=C.OC(=O)C=C NPERTKSDHFSDLC-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
本発明は塗料剥離方法並びに該方法に於いて使
用する塗料剥離用組成物に関す
現在塗料の発展は著しく、各種の広い分野でさ
まざまな物品に塗装が行なわれている。塗装を行
う際には塗装すべき物品以外の物品にも塗料が附
着することがしばしば生ずる。被塗装物品以外の
物品たとえば支具、治具、台車、床面、壁面等に
はどうしても塗料が不要に附着し、塗装がくり返
されることにより数100〜数1000ミリミクロン著
しい場合には１〜２cmもの不要な塗膜が形成され
ることとなる。この結果支具や治具は本来の作用
をはたさなくなり、台車は円滑な作動が困難とな
り、また床や壁の場合は足場が悪くなつたり自重
が大きくなつて作業性が悪くなる。このためにこ
れ等不要な塗膜を除去する必要が生ずる。
この不要な塗膜を剥離する従来の手段としては
有機溶剤に溶解したりアルカリ液で処理したりし
て塗膜を溶解乃至変質せしめて除去する化学的な
方法と、ヘラ、ペンチ、ハンマー、ドリル等の物
理的な方法により除去する機械的方法がある。前
者は塗膜が比較的薄い場合には有効であるが、厚
くなると剥離効果が低下し、またいずれの場合も
人体に対し好ましくなく、また有機溶剤を使用す
る場合は大量の有機溶剤と長時間接触する必要が
あり、火災の危険をも生ずる。後者の方法では塗
膜が厚い場合によく使用される方法であるが、こ
の方法では容易に且つ完全には塗膜を除去出来
ず、しかも粉じん等の発生が見られ、しかも容易
に除去出来ないためにどうしても無理をするため
支具や治具等に損傷をあたえる場合が多く、また
作業能率も悪くなるという難点がある。
この様な状態に於いて現在簡単且つ完全にしか
も安全に不要な塗膜を除去出来る手段の開発が強
く要望されている。
本発明は上記要望に応えることを目的として成
されたものであつて、本発明のこの目的は塗膜形
成物質と吸水性ポリマーとを有効成分として含有
する組成物を予め塗料の附着を妨ぐべき物品に塗
布しておくことにより達成される。即ち本発明は
塗膜形成物質と吸水性ポリマーとを有効成分とし
て含有して成る塗料剥離用組成物を予め所定の物
品表面に塗布し、この上に不要な塗料が塗布され
た後水洗し、次いで機械的作用を加えて不要な塗
膜を物品表面から剥離することを特徴とする塗料
剥離方法及び塗膜形成物質と吸水性ポリマーとを
有効成分として含有して成る塗料剥離用組成物に
係るものである。
本発明に於いては、その組成物中に含有される
吸水性ポリマーが水と接触せしめられて多量の水
を吸着し体積が数倍〜数100倍に膨張する。この
際の膨張力を利用して塗料を浮き上がらせ、しか
る後にヘラ、ペンチ、ハンマー、ドリル等で剥離
するものである。
本発明組成物は吸水性ポリマーと塗膜形成物質
とを有効成分として含有して成るものであり、こ
れ等の配合量は通常吸水性ポリマー0.01〜80重量
％好ましくは0.1〜40重量％、塗膜形成物質20〜
99.99重量％好ましくは60〜99.9重量％程度であ
る。
この際使用される吸水性ポリマーとしては水と
接触したとき水を吸収する高分子物質を指表し、
通常自重の数倍から数百倍以上の水を吸収するも
のである。具体的にはセルロースやデンプン等の
上記天然高分子物質をアクリロニトリル又は（及
び）アクリル酸ソーダと反応させた後に加水分解
したり架橋したもの等を例示出来、更に具体的に
はデンプン−ポリアクリロニトリルの加水分解
物、デンプン−ポリアクリル酸ソーダの架橋物等
を例示出来る。
また合成物質として、アクリル系化合物も使用
出来、たとえば酢酸ビニル−アクリル酸メチル共
重合体のけん化物、ポリアクリロニトリルの加水
分解物のホルムアルデヒド架橋物、ビニルアルコ
ール−アクリル酸ソーダ共重合物等も使用出来
る。
これ等本発明で使用する吸水性ポリマーは通常
固体で有機溶剤に不溶であり、しかも塗膜形成能
が非常に弱いかもしくはほとんどないため塗膜形
成物質と併用するのが普通である。
本発明に於いて使用される塗膜形成物質は通常
次の組成から成るものを示す。
(イ) バインダー樹脂
５〜90（好ましくは10〜60）重量％
(ロ) 溶 剤
０〜90（好ましくは10〜60）重量％
(ハ) 顔 料
０〜80（好ましくは10〜50）重量％
(ニ) その他の添加剤
０〜５（好ましくは0.05〜２）重量％
バインダー樹脂は塗膜形成物質の主体となるも
ので例えばメラミン、アクリル系尿素、エポキ
シ、アミノ、アミノアルキド、フタル酸、塩化ビ
ニル、塩化ビニリデン、酢酸ビニル、ポリエステ
ル、不飽和ポリエステル、スチロール、スチレン
−ブタジエン、硅素などの各樹脂および共重合物
などがあり、これらの少なくとも一種が使用され
る。
溶剤としては上記バインダー樹脂を溶解して塗
装作業を容易にするもので、水以外の有機溶剤が
広く使用できる。また顔料や分散剤その他の添加
剤については本発明に本質的にかかわるものでは
ないが、吸水性ポリマーを含む組成物を塗装する
際の作業性を良くするもので、一般に広く使用さ
れているものでよい。
本発明組成物を調製するに際しては吸水性ポリ
マーと塗膜形成物質とを混合すれば良い。
本発明組成物を用いて不要な部分に塗装された
塗料を除去するに際しては、先ず本発明組成物を
塗膜が形成されてはいけない物品乃至部分に塗布
する。この際の塗布手段としては特に制限はなく
通常の手段で良く、たとえば浸漬、スプレー、は
け塗り等の手段を例示出来る。膜厚は0.1ミリミ
クロン以上で充分効果があるが、通常１〜20ミリ
ミクロン程度とするのが好ましい。次いで乾燥せ
しめて溶剤を揮散せしめる。その後水と接触せし
めるが、この時期は適宜なときで良い。接触手段
としては水が接触するかぎり制限されることはな
く、たとえば浸漬、スプレー、塗布等各種の手段
が採用出来る。接触時間は10秒以上好ましくは１
〜10分程度である。また、水の代りに温水や熱水
の使用または剥離の前に約50℃以上に加熱すると
さらに効果が良くなる。
本発明法に依れば被塗装物と本発明における組
成物または本発明における組成物と塗料間の密着
力が急激に低下する。特に塗料が厚くなつた場合
塗膜の内部応力の増加のために塗膜が浮き上がつ
た状態になることが多い。しかる後に、通常はハ
ンマーでたたくなどの物理的シヨツクを与えると
塗料は塗膜のまま容易に剥離して除去可能とな
る。
以下に実施例を挙げて本発明を具体的に説明す
る。但し下記例に於いて部とあるは重量部を示す
ものとする。
実施例 １
吸水性ポリマー
「アクアキーブ4S（製鉄化学工業KK）」
……… ５部
アクリル系塗料
「アクリツクNo.1000白（関西ペイントKK）」
………95部
をらいかい機で混合した後、シンナーを10％加
え、これを鉄板（10×30×0.3cm）上にスプレー
で２回塗り140℃で１時間乾燥した。その上から
アクリツクNo.1000白を塗装した。塗装はスプレ
ー法で乾燥は160℃１時間で行ないこれを20回く
り返した。しかる後50〜60℃の温水中に10分間浸
漬してからハンマーでたたくと塗料が鉄板から容
易に剥離した。
実施例 ２
塩化ビニル系樹脂「リユーロンＱ−Ｓ（株式会
社鉄興社）」40部をトルエン10部に溶解し、酸化
クロム40部、吸水性ポリマー「サンウエツトIM
−300（三洋化成工業KK）」10部およびだれ・沈
降防止剤として「デスパロン4200−20」0.5部加
えて混合し、三本ロールを２回通した組成物を硬
質塩化ビニル樹脂板（10×30×１cm）に１回はけ
塗りした。一夜放置後水中に２分間浸漬してさら
に室温で１時間放置した後アクリル系塗料「アク
リセツト214E（日蝕アロー化学）」を塗装した。
塗装ははけ塗りで行ない、乾燥は40〜50℃で30分
行なつた。塗装と乾燥をくり返していくうち、塗
料が本発明における組成物から次第に浮き上が
り、約７〜８回くり返すとほぼ完全に浮き上がつ
た。後ペンチで容易に剥離できた。
実施例 ３
アクリル酸エステル樹脂「VSダインＷ−240
（振高合成工業KK）」87部、イソプロピルアルコ
ール10部、吸水性ポリマー「スミカゲル（住友
化学工業KK）」12部およびデンプン１部を混合
した液を鉄板（10×30×0.3cm）上に２回はけ塗
りした後、100℃で約１時間乾燥した。その上に
「アクリツクNo.1000白」をスプレーで１回塗装
して150℃で１時間乾燥した。室温まで冷却した
試料を２分間シヤワー水洗し、再び塗装と乾燥を
くり返した。約15回くり返すと塗料と本発明にお
ける組成物とがはなれてハンマーでたたくと容易
に剥離した。
実施例 ４
エチレン−酢ビコポリマー「EVADIC EV−15
（大日本化学KK）」60部、吸水性ポリマー「イソ
バンCH（クラレイソプレンケミカルKK）」10
部、カオリン30部および「デイスパロン4200−
20」0.5部を加えてバタフライミキサーで混合し
た液中に、木片（10×30×１cm）を１分間浸漬し
た後80℃で１時間乾燥した。室温まで冷却した試
料を１分間水中に浸漬した後、ウレタン系塗料
「アロタン175（日蝕アロー化学KK）」をはけ塗
りし室温で２時間乾燥した。塗装と乾燥を２回く
り返した後、再び試料を水中に５分間浸漬してか
ら塗装と乾燥をさらに４回くり返した。最後に50
〜60℃で30分間加温すると木片から本発明におけ
る組成物または塗料が浮き上がり、ヘラを使つて
容易に剥離できた。
比較例 １〜４
実施例１〜４の組成物から吸水性ポリマーを除
いた組成で同様な試験を行なつた。
実施例１〜４と比較例１〜４の結果を第１表に
示す。なお、剥離の容易性は各方法で剥離した時
の剥離面積（％）で示す。
TECHNICAL FIELD The present invention relates to a paint stripping method and a paint stripping composition used in the method.Currently, paints are undergoing remarkable development, and various articles are being coated in a wide variety of fields. When painting, paint often adheres to articles other than those to be painted. Paint inevitably adheres to objects other than the objects to be painted, such as supports, jigs, trolleys, floors, walls, etc., and in cases where paint adheres unnecessarily to objects other than the objects to be painted, such as several 100 to several 1000 millimicrons due to repeated painting, 1 to 1 to This results in the formation of an unnecessary coating film of as much as 2 cm. As a result, supports and jigs no longer perform their intended functions, it becomes difficult for carts to operate smoothly, and in the case of floors and walls, footing becomes poor and the weight increases, making workability worse. For this reason, it becomes necessary to remove these unnecessary coating films. Conventional methods for removing this unnecessary paint film include chemical methods that dissolve or alter the paint film by dissolving it in an organic solvent or treating it with an alkaline solution, and using a spatula, pliers, hammer, or drill. There is a mechanical method of removing it by physical methods such as. The former is effective when the coating film is relatively thin, but as it becomes thicker, the peeling effect decreases, and in either case, it is not good for the human body, and when an organic solvent is used, it requires a large amount of organic solvent and a long time. contact is necessary and also creates a fire hazard. The latter method is often used when the paint film is thick, but this method cannot easily and completely remove the paint film, and it also generates dust, etc., which cannot be easily removed. Therefore, it is difficult to do so, which often causes damage to supports, jigs, etc., and also reduces work efficiency. Under these circumstances, there is currently a strong demand for the development of a means that can easily, completely and safely remove unnecessary paint films. The present invention has been made to meet the above-mentioned needs, and the purpose of the present invention is to prevent the adhesion of paint in advance by preparing a composition containing a film-forming substance and a water-absorbing polymer as active ingredients. This can be achieved by applying it to the desired product. That is, in the present invention, a paint stripping composition containing a film-forming substance and a water-absorbing polymer as active ingredients is applied in advance to the surface of a predetermined article, and after unnecessary paint is applied thereon, the composition is washed with water. The present invention relates to a paint stripping method characterized in that an unnecessary coating film is then peeled off from the surface of an article by applying a mechanical action, and a paint stripping composition comprising a coating film-forming substance and a water-absorbing polymer as active ingredients. It is something. In the present invention, the water-absorbing polymer contained in the composition is brought into contact with water, adsorbs a large amount of water, and expands in volume by several to several hundred times. The expansion force at this time is used to lift the paint, which is then peeled off with a spatula, pliers, hammer, drill, etc. The composition of the present invention contains a water-absorbing polymer and a film-forming substance as active ingredients. Film forming substance 20～
It is about 99.99% by weight, preferably about 60 to 99.9% by weight. The water-absorbing polymer used in this case refers to a polymer substance that absorbs water when it comes into contact with water.
It usually absorbs several to several hundred times its own weight in water. Specifically, the above-mentioned natural polymer substances such as cellulose and starch are reacted with acrylonitrile or (and) sodium acrylate, and then hydrolyzed or crosslinked.More specifically, starch-polyacrylonitrile Examples include a hydrolyzate and a crosslinked product of starch-sodium polyacrylate. Acrylic compounds can also be used as synthetic substances, such as saponified vinyl acetate-methyl acrylate copolymers, formaldehyde-crosslinked polyacrylonitrile hydrolysates, and vinyl alcohol-sodium acrylate copolymers. . These water-absorbing polymers used in the present invention are usually solid and insoluble in organic solvents, and have very weak or almost no film-forming ability, so they are usually used in combination with a film-forming substance. The film-forming substance used in the present invention usually has the following composition. (a) Binder resin 5-90 (preferably 10-60) weight% (b) Solvent 0-90 (preferably 10-60) weight% (c) Pigment 0-80 (preferably 10-50) weight% % (iv) Other additives 0 to 5 (preferably 0.05 to 2)% by weight The binder resin is the main component of the coating film forming substance, such as melamine, acrylic urea, epoxy, amino, amino alkyd, phthalic acid, There are resins and copolymers such as vinyl chloride, vinylidene chloride, vinyl acetate, polyester, unsaturated polyester, styrene, styrene-butadiene, and silicon, and at least one of these is used. The solvent is one that dissolves the binder resin and facilitates the coating work, and a wide variety of organic solvents other than water can be used. Pigments, dispersants, and other additives are not essentially related to the present invention, but they improve workability when coating compositions containing water-absorbing polymers, and are generally widely used. That's fine. When preparing the composition of the present invention, the water-absorbing polymer and the film-forming substance may be mixed. When removing paint applied to unnecessary areas using the composition of the present invention, the composition of the present invention is first applied to articles or areas where a coating film should not be formed. The application means at this time is not particularly limited and may be any conventional means, such as dipping, spraying, brushing, etc. A film thickness of 0.1 millimicrons or more is sufficiently effective, but it is usually preferably about 1 to 20 millimicrons. Then, it is dried to volatilize the solvent. After that, it is brought into contact with water, but this can be done at any suitable time. The contacting means is not limited as long as water comes into contact, and various methods such as dipping, spraying, and coating can be employed. The contact time is 10 seconds or more, preferably 1
It takes about 10 minutes. Also, the effect will be even better if you use hot water or hot water instead of water or heat it to about 50°C or higher before peeling. According to the method of the present invention, the adhesion between the object to be coated and the composition of the present invention or the composition of the present invention and the coating material decreases rapidly. Particularly when the paint becomes thick, the internal stress of the paint film increases and the paint film often becomes lifted. After that, when a physical shock such as hitting with a hammer is applied, the paint can be easily peeled off and removed as a film. The present invention will be specifically described below with reference to Examples. However, in the following examples, parts refer to parts by weight. Example 1 Water-absorbing polymer “Aquakive 4S (Steel Chemical Industry KK)”
……… Part 5 Acrylic paint “Acrylic No.1000 White (Kansai Paint KK)”
After mixing 95 parts in a sieve machine, 10% thinner was added, and this was sprayed twice on an iron plate (10 x 30 x 0.3 cm) and dried at 140°C for 1 hour. I painted Acrylic No. 1000 white over it. Painting was done by spraying and drying was done at 160°C for 1 hour, and this process was repeated 20 times. After that, the paint was easily peeled off from the iron plate by immersing it in warm water at 50-60°C for 10 minutes and then hitting it with a hammer. Example 2 40 parts of vinyl chloride resin "Reeuron Q-S (Tekkosha Co., Ltd.)" was dissolved in 10 parts of toluene, 40 parts of chromium oxide, and water-absorbing polymer "Sunwet IM" were dissolved in 10 parts of toluene.
-300 (Sanyo Chemical Industries KK)" and 0.5 parts of "Desparon 4200-20" as an anti-sagging/settling agent were mixed and passed through a three-roll roll twice. 30 x 1 cm) was brushed once. After being left overnight, it was immersed in water for 2 minutes, and then left to stand at room temperature for 1 hour, and then painted with acrylic paint ``Acryset 214E (Eclipse Arrow Chemical Co., Ltd.)''.
Painting was done by brushing and drying was done at 40-50°C for 30 minutes. As the coating and drying process was repeated, the paint gradually lifted off from the composition of the present invention, and after repeating the process about 7 to 8 times, it was almost completely lifted off. It was easily peeled off with rear pliers. Example 3 Acrylic acid ester resin “VS Dyne W-240
(Furitaka Gosei Kogyo KK), 10 parts of isopropyl alcohol, 12 parts of the water-absorbing polymer "Sumikagel (Sumitomo Chemical Industries KK)" and 1 part of starch were mixed onto an iron plate (10 x 30 x 0.3 cm). After brushing twice, it was dried at 100°C for about 1 hour. On top of that, I sprayed one coat of ``Acryk No. 1000 White'' and dried it at 150℃ for 1 hour. The sample was cooled to room temperature, washed with shower water for 2 minutes, and then painted and dried again. After repeating this process about 15 times, the paint and the composition of the present invention separated and were easily peeled off when struck with a hammer. Example 4 Ethylene-acetate copolymer “EVADIC EV-15”
(Dainippon Chemical KK)” 60 parts, water-absorbing polymer “Isoban CH (Clare Isoprene Chemical KK)” 10 parts
part, 30 parts of kaolin and 4200 parts of "Daysparon"
A piece of wood (10 x 30 x 1 cm) was immersed in the solution containing 0.5 part of ``20'' and mixed with a butterfly mixer for 1 minute, and then dried at 80°C for 1 hour. After cooling the sample to room temperature, it was immersed in water for 1 minute, then brushed with urethane paint "Alotane 175 (Eclipse Arrow Chemical KK)" and dried at room temperature for 2 hours. After repeating painting and drying twice, the sample was again immersed in water for 5 minutes, and then painting and drying was repeated four more times. 50 at the end
When heated at ~60°C for 30 minutes, the composition or paint of the present invention lifted from the wood piece and could be easily peeled off using a spatula. Comparative Examples 1-4 Similar tests were conducted using the compositions of Examples 1-4 except that the water-absorbing polymer was removed. The results of Examples 1 to 4 and Comparative Examples 1 to 4 are shown in Table 1. Note that the ease of peeling is indicated by the peeled area (%) when peeled by each method.
【表】【table】
Claims (1)
として含有して成る塗料剥離用組成物を予め所定
の物品表面に塗布し、この上に不要な塗料が塗布
された後水洗し、次いで機械的作用を加えて不要
な塗膜を物品表面から剥離する方法であつて、上
記吸水性ポリマーが、アクリル系化合物を少くと
もその一成分として含有して成るポリマーである
塗料剥離方法。 ２ 塗膜形成物質と吸水性ポリマーとを有効成分
として含有して成るものであつて、該吸水性ポリ
マーが、アクリル系化合物を少くともその一成分
として含有して成るポリマーである塗料剥離用組
成物。 ３ 塗料形成物質20〜99.99重量％及び吸水性ポ
リマー0.10〜80重量％の割合で含有されて成る特
許請求の範囲第２項の塗料剥離用組成物。 ４ 塗膜形成物質がビヒクルと溶剤、顔料及びそ
の他の添加剤の少くとも１種との混合物である特
許請求の範囲第２項の塗料剥離用組成物。[Scope of Claims] 1. After a paint stripping composition containing a film-forming substance and a water-absorbing polymer as active ingredients is applied to the surface of a predetermined article in advance, and unnecessary paint is applied thereon, A paint removal method in which an unnecessary coating film is removed from the surface of an article by washing with water and then applying a mechanical action, wherein the water-absorbing polymer is a polymer containing an acrylic compound as at least one component. Method. 2. A composition for removing paint, which contains a paint film-forming substance and a water-absorbing polymer as active ingredients, the water-absorbing polymer being a polymer containing an acrylic compound as at least one component. thing. 3. The paint stripping composition according to claim 2, which contains a paint forming substance in a proportion of 20 to 99.99% by weight and a water-absorbing polymer in a proportion of 0.10 to 80% by weight. 4. The paint stripping composition according to claim 2, wherein the film-forming substance is a mixture of a vehicle and at least one of a solvent, a pigment, and other additives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7715081A JPS57190675A (en) | 1981-05-20 | 1981-05-20 | Method and composition for stripping paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7715081A JPS57190675A (en) | 1981-05-20 | 1981-05-20 | Method and composition for stripping paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57190675A JPS57190675A (en) | 1982-11-24 |
| JPS6117553B2 true JPS6117553B2 (en) | 1986-05-08 |
Family
ID=13625756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7715081A Granted JPS57190675A (en) | 1981-05-20 | 1981-05-20 | Method and composition for stripping paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57190675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0196550U (en) * | 1987-12-17 | 1989-06-27 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5545381A (en) * | 1991-01-31 | 1996-08-13 | Ricoh Company, Ltd. | Device for regenerating printed sheet-like recording medium |
| US5605777A (en) * | 1992-08-31 | 1997-02-25 | Ricoh Company, Ltd. | Method and apparatus for regenerating image holding member |
| JPH07140704A (en) * | 1993-09-22 | 1995-06-02 | Ricoh Co Ltd | Method of repeatedly using image carrier |
| JP2691512B2 (en) * | 1993-09-22 | 1997-12-17 | 株式会社リコー | Method and apparatus for removing image forming substance from image carrier |
| US5642550A (en) * | 1994-02-28 | 1997-07-01 | Ricoh Company, Ltd. | Apparatus for removing image forming substance from image holding member |
| US5574538A (en) * | 1994-09-26 | 1996-11-12 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member forming processing situation mark |
| JPH08166747A (en) | 1994-10-14 | 1996-06-25 | Ricoh Co Ltd | Device for removing adhesive matter from sheet material |
| US5813344A (en) * | 1994-10-24 | 1998-09-29 | Ricoh Company, Ltd. | Method and apparatus for removing image forming substance from image holding member |
-
1981
- 1981-05-20 JP JP7715081A patent/JPS57190675A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0196550U (en) * | 1987-12-17 | 1989-06-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57190675A (en) | 1982-11-24 |
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