JPS6142732B2 - - Google Patents

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Publication number
JPS6142732B2
JPS6142732B2 JP53159005A JP15900578A JPS6142732B2 JP S6142732 B2 JPS6142732 B2 JP S6142732B2 JP 53159005 A JP53159005 A JP 53159005A JP 15900578 A JP15900578 A JP 15900578A JP S6142732 B2 JPS6142732 B2 JP S6142732B2
Authority
JP
Japan
Prior art keywords
coating
sheet
molded product
vinyl chloride
temperature
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
Application number
JP53159005A
Other languages
Japanese (ja)
Other versions
JPS5584331A (en
Inventor
Yutaka Okudaira
Nobumi Pponda
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP15900578A priority Critical patent/JPS5584331A/en
Publication of JPS5584331A publication Critical patent/JPS5584331A/en
Publication of JPS6142732B2 publication Critical patent/JPS6142732B2/ja
Granted legal-status Critical Current

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は耐候性改良塩化ビニル樹脂成形品の製
造法により、更に詳しくは主として屋根材建築外
装材、デツキ材等に用いる塩化ビニル樹脂成形品
の耐候性を改良するために、該成形品の表面に、
エポキシ樹脂低分子量物と特定の感光性化合物と
を、所定の温度条件の下で塗布し、次いでその塗
膜面に紫外線を照射して、塗膜を硬化せしめるこ
とを特徴とする耐候性改良塩化ビニル樹脂成形品
の製造法に関するものである。従来、建材として
用いられる塩化ビニル樹脂成形品の耐候性を改良
するために、成形時に紫外線吸収剤を塗布した
り、練込んだり或はアクリル系樹脂や飽和ポリエ
ステルフイルム等を用いて塩化ビニル樹脂成形品
の表面に紫外線保護膜を形成せしめる等の方法が
一般に行われている。 しかしながら、上記従来法では、紫外線防止効
果の持続性製造コスト或は保護膜の剥離等の点で
一長一短があり、満足すべきものが得られていな
い。 本発明者らは、塩化ビニル樹脂成形品の耐候性
改良方法について、種々研究の結果、上記従来の
欠点を解決する方法を得るに至つたもので、その
要旨とするところは、塩化ビニル樹脂成形品の表
面に、エポキシ樹脂モノマー及び/又はその低重
合体ポリマーと感光性アリールジアゾニウム化合
物とを、塗布面が60〜140℃の範囲となるように
加熱しながら塗布し、次いで該塗膜面に紫外線を
照射して塗膜を硬化せしめることを特徴とする耐
候性改良塩化ビニル樹脂成形品の製造法に存す
る。 以下本発明を実施例により詳細に説明する。 本発明で用いる塩化ビニル樹脂成形品は、ポリ
塩化ビニル、塩化ビニルとエチレンまたは酢酸ビ
ニルとの共重合体や、必要に応じて耐衝撃性改良
材として塩素化ポリエチレン、ABS(アクリロ
ニトリル−ブタジエン−スチレン共重合体)、
MBS(メチルメタクリル−ブタジエン−スチレ
ン共重合体)等を上記樹脂100重量部に対して1
〜20重量部程度配合してなる原料樹脂を通常のプ
ラスチツク成形法により、板、波板、管、デツキ
材、雨樋等、各種の形状に成形して得られたもの
である。 本発明は、上記成形品、或は成形加工途中の工
程の成形品の表面に、エポキシ樹脂モノマー及
び/又はその低重合体ポリマーと、感光性アリー
ルジアゾニウム化合物とを別々に或は混合して加
熱条件下で塗布し、しかるのち該塗膜面に紫外線
を照射して塗膜を硬化せしめるものである。 本発明で用いる上記エポキシ樹脂モノマーは次
の構造式で表わされるエポキシ環を有するもので
ある。
The present invention relates to a method for producing a weather-resistant vinyl chloride resin molded product, and more specifically, to improve the weather resistance of a vinyl chloride resin molded product mainly used for roofing materials, building exterior materials, decking materials, etc., the surface of the molded product is To,
A weather resistance-improving chloride method characterized by applying a low-molecular-weight epoxy resin and a specific photosensitive compound under predetermined temperature conditions, and then irradiating the coating surface with ultraviolet rays to cure the coating. This invention relates to a method for manufacturing vinyl resin molded products. Conventionally, in order to improve the weather resistance of vinyl chloride resin molded products used as building materials, UV absorbers are applied or kneaded during molding, or vinyl chloride resin molding is done using acrylic resin, saturated polyester film, etc. A commonly used method is to form an ultraviolet protection film on the surface of the product. However, the above-mentioned conventional methods have advantages and disadvantages in terms of sustainability of the ultraviolet protection effect, manufacturing cost, peeling of the protective film, etc., and are not satisfactory. As a result of various research into methods for improving the weather resistance of vinyl chloride resin molded products, the present inventors have found a method that solves the above-mentioned conventional drawbacks. An epoxy resin monomer and/or its low polymer and a photosensitive aryldiazonium compound are applied to the surface of the product while heating the applied surface to a temperature in the range of 60 to 140°C, and then the coated surface is heated. The present invention relates to a method for producing a weather-resistant vinyl chloride resin molded article, which is characterized by curing the coating film by irradiating it with ultraviolet rays. The present invention will be explained in detail below with reference to Examples. The vinyl chloride resin molded product used in the present invention may be made of polyvinyl chloride, a copolymer of vinyl chloride and ethylene or vinyl acetate, or, if necessary, chlorinated polyethylene or ABS (acrylonitrile-butadiene-styrene) as an impact modifier. copolymer),
Add MBS (methyl methacrylate-butadiene-styrene copolymer), etc. to 100 parts by weight of the above resin.
It is obtained by molding raw material resin containing about 20 parts by weight into various shapes such as plates, corrugated plates, pipes, decking materials, rain gutters, etc., using ordinary plastic molding methods. The present invention provides an epoxy resin monomer and/or its low polymer and a photosensitive aryldiazonium compound, which are heated separately or in a mixture, on the surface of the above-mentioned molded article or the molded article in the middle of the molding process. The coating is applied under certain conditions, and then the coating surface is irradiated with ultraviolet rays to cure the coating. The epoxy resin monomer used in the present invention has an epoxy ring represented by the following structural formula.

【式】(式中、R1,R2,R3及びR4は、 アルキル、アリール、アルコキシ、アルケニル及
び水素である。) 上記モノマーとしては例えばエチレンオキサイ
ド及びこれらの同族体;グリシジン酸及びグリシ
ジルエステル;グリシジルメタアクリレート、ア
クリレート及びクロトネート;並びにアリルグリ
シジルエーテル等がある。 また、エポキシ樹脂低重合体ポリマーは上記モ
ノマーの低重合物であり、かつ成形品表面を溶解
しうる溶解能を有するものであつて常温で液体の
ものが望ましい。 また、本発明で用いる前記感光性アリールジア
ゾニウム化合物は、次の構造式で表わされる。 (式中MXn+mはヘキサクロロスタンネート
、テトラクロロフエレート、ヘキサフルオロ
アルセネート、ヘキサクロロアンチモネート
、ヘキサフルオロアンチモネート及びビスマ
ス塩化物から選ばれたハロゲンを含有する錯体
アニオンであり;Yはニトロ、ハロゲン、N−モ
ルホリノ、アルキル、アルコキシ、アリール、ア
ミノ、アリールアミノ、アルキルアミノ及びアリ
ールメルカプト基からなる群から選ばれる。ま
た、mは紫外線照射を受けて生成するルイス酸の
ハロゲン原子の数に相等する。即ち、錯体カチオ
ンの電荷に相等する。) 上記アリールジアゾニウム化合物は、紫外線に
露出されると一般式MXnで示されるルイス酸
(即ち、PF5、Fecl3、AsF5、SbF5、SnCl4及び
Bicl3等)を生成し、該ルイス酸がエポキシ樹脂
モノマー及び/又はその低重合体ポリマーの重合
を開始せしめるものである。 上記アリールジアゾニウム化合物としては、例
えばP−メトキシベンゼンジアゾニウムヘキサフ
ルオロホスフエート、O−ニトロベンゼンジアゾ
ニウムヘキサフルオロホスフエート、2,5−ジ
クロロベンゼンジアゾニウムヘキサフルオロホス
フエート、2,5−ジエトキシ−4−(P−トリ
ル)メルカプトベンゼンジアゾニウムヘキサフル
オロホスフエート等のジアゾニウムヘキサフルオ
ロホスフエートやP−N−モルホリノフエニルジ
アゾニウムヘキサフルオロホスフエート、2,5
−ジメトキシ−4−N−モルホリノベンゼンジア
ゾニウムヘキサフルオロホスフエート、P−N−
モルホリノフエニルジアゾニウムヘキサフルオロ
アンチモネート、P−N−モルホリノフエニルジ
アゾニウムヘキサフルオロアンチモネート等のN
−モルホリノ錯体等がある。 本発明で成形品の表面に塗布するに当りエポキ
シ樹脂モノマー及び/又はその低重合体ポリマー
100重量部に対して、上記アリールジアゾニウム
化合物1〜10重量部を予め混合しておき、これを
塗布するか或は別々に重ね塗りして用いるもので
ある。該コーテイング液を調製するに当り、アセ
トン、アセトニトリル、トルエン、キシレン、メ
チルエチルケトン等の不活性溶媒を用いることは
差支えない。 また、上記コーテイング液中に必要に応じ、予
め紫外線吸収剤または静電防止剤等を添加して使
用することも差支えない。 上記コーテイング液を成形品に塗布するに際し
て、塗布面が60〜140℃範囲内の温度であるよう
に調節することが必要であり、上記60℃より低い
温度では塗布したのち長時間放置しない限り成形
品の表面で塗膜が剥離し、また逆に上記140℃よ
り高い温度では成形品の塩化ビニル樹脂が分解を
起しやすい。 本発明方法においては、上記温度範囲である60
〜140℃範囲の温度となるように成形品及び/又
はコーテイング液を加熱しつゝ塗布すればよい。 次に、上記コーテイング液を上記温度のもとに
バーコーター、ロールコーター、スプレー法及び
浸漬法等により1〜30μの塗布厚みに塗布し、次
いで1秒〜3分後に生成塗膜に紫外線を照射す
る。該紫外線の発生源としては水銀、キセノン、
カーボンアークまたはタングステンフイラメント
ランプ等の紫外線ランプが有効に用いられ、照射
条件はランプの種類、紫外線強度(ワツト/cm)
等により異なるが0.5〜60秒範囲内の照射時間が
選ばれる。 前記の如く、先ず60〜140℃温度範囲の条件下
で成形品表面にコーテイング液を塗布すると、エ
ポキシ樹脂モノマー及び/又はその低重合体ポリ
マーが成形品表面の樹脂を溶解して、成形品の表
層部に拡散層が形成されるので塗膜は成形品表面
に一体的強固に接着する。 上記拡散層は、塗布温度並びに塗布後紫外線照
射までの経過時間により成形品表面への拡散度合
が左右されるので成形品の種類、肉厚に応じて前
記の塗布条件範囲から適宜選定すればよい。次い
で形成された塗膜に前記の如く紫外線を照射する
と同時に上記塗膜中の感光性ジアゾニウム化合物
が分解してルイス酸が生成し、これが重合開始触
媒として作用するのでエポキシ樹脂モノマー及
び/又はその低重合体ポリマーの重合が進行し、
塗膜は完全に硬化する。同時にエポキシ樹脂の重
合は成形品の表面に形成される拡散層にまで及ぶ
ので塗膜は成形品と強固に接着したまゝ硬化す
る。 以上の如く、成形品表面に形成された硬化膜は
耐候性の良好なエポキシ樹脂が主体であるので成
形品の耐候性劣化をカバーすると共に、硬化膜が
成形品の表面で一体的に接着して形成されるので
該硬化膜が経年剥離を起すおそれがなくなる等の
すぐれた効果を奏する。また硬化膜の表面硬度が
大きくなるので本発明で得られたものは外装用建
材、或は屋外で使用する各種部材等に使しても損
傷を受け難い等の効果もある。 以下実施例により更に詳しく説明するが、本発
明はこれに限定されるものでないことはもちろん
である。 なお、下記実施例中に記載の部はすべて重量部
を表わす。 実施例 1 下記配合−1及び配合−2のものをそれぞれ
別々にヘンシエルミキサーで混合し、該混合物を
8吋テストロールで180℃、5分間混練してのち
180℃、10分間プレス成形して2種のシートを得
る。 配合 1(透明配合) ポリ塩化ビニル(重合度:800、ストレートポ
リマー) ……100部 安定剤(ジブチル錫マレート) ……3部 滑剤(Waxop) ……0.3部 配合 2(不透明配合) 塩化ビニル樹脂(塩化ビニル−エチレン共重合
体) ……100部 安耐剤(三塩基性硫酸鉛) ……3部 〃 (二塩基性ステアリン酸鉛) ……1〃 〃 (n・ステアリン酸鉛) ……0.5〃 顔 料(グレー) ……1.0〃 上記2種のシート面に、それぞれエポキシ樹脂
モノマー及びオリゴマーを含む旭電化社製商品
名:ウルトラセツトADX−800 100部に対し、P
−メトキシベンゼンジアゾニウムヘキサフルオロ
ホスフエート(旭電化社製、商品名:PS−33)
を3部混合してなるコーテイング液をバーコータ
ーにより10μ厚みに塗布する。このとき配合−1
のシートには下記表−1に記載の温度に予め加温
したコーテイング液を用いて塗布し、一方配合−
2の場合はシート自体を下記表−1に記載の温度
に設定して塗布した。上記の如く塗布してのち、
1分後に上記各シートの塗布面に東芝社製高圧水
銀ランプH1000Lを使用し、紫外線強度30ワツ
ト/cm、照射時間60秒の条件で紫外線を照射し塗
膜を硬化せしめた。得られた硬化塗膜を形成した
シートとシート自体及びシートにアクリル樹脂塗
膜を形成したもの、飽和ポリエステルフイルムを
積層したものについてれぞれ耐候性試験結果の比
較値を表−1に示す。 なお耐候性試験は、JIS−A1415に準じて行な
いウエザーリング0、500、1000、1500及び2000
時間後のサンプルについて、界面剥離の有無、光
線透過率%(透明配合の配合−1について)並び
に色差△E(不透明配合の配合−2について)に
よる耐候性を比較評価した。
[Formula] (In the formula, R 1 , R 2 , R 3 and R 4 are alkyl, aryl, alkoxy, alkenyl and hydrogen.) Examples of the above monomers include ethylene oxide and homologues thereof; glycidic acid and glycidyl. Esters; glycidyl methacrylate, acrylate and crotonate; and allyl glycidyl ether. The epoxy resin low polymer is preferably a low polymer of the above-mentioned monomers, has a dissolving ability capable of dissolving the surface of a molded article, and is liquid at room temperature. Further, the photosensitive aryldiazonium compound used in the present invention is represented by the following structural formula. (In the formula, MXn+m is a halogen-containing complex anion selected from hexachlorostannate, tetrachloropherate, hexafluoroarsenate, hexachloroantimonate, hexafluoroantimonate, and bismuth chloride; Y is nitro, halogen, It is selected from the group consisting of N-morpholino, alkyl, alkoxy, aryl, amino, arylamino, alkylamino, and arylmercapto groups. Also, m is equivalent to the number of halogen atoms of the Lewis acid produced upon UV irradiation. (i.e., equivalent to the charge of the complex cation.) When exposed to ultraviolet light, the aryl diazonium compound transforms into a Lewis acid of the general formula MXn (i.e., PF 5 , Fecl 3 , AsF 5 , SbF 5 , SnCl 4 and
Bicl 3 , etc.), and the Lewis acid initiates the polymerization of the epoxy resin monomer and/or its low polymer. Examples of the aryldiazonium compounds include P-methoxybenzenediazonium hexafluorophosphate, O-nitrobenzenediazonium hexafluorophosphate, 2,5-dichlorobenzenediazonium hexafluorophosphate, 2,5-diethoxy-4-(P- Diazonium hexafluorophosphate such as tolyl) mercaptobenzenediazonium hexafluorophosphate and P-N-morpholinophenyldiazonium hexafluorophosphate, 2,5
-dimethoxy-4-N-morpholinobenzenediazonium hexafluorophosphate, P-N-
N such as morpholinophenyldiazonium hexafluoroantimonate, PN-morpholinophenyldiazonium hexafluoroantimonate, etc.
- Morpholino complexes, etc. In the present invention, epoxy resin monomers and/or low polymers thereof are used for coating on the surface of molded products.
To 100 parts by weight, 1 to 10 parts by weight of the above-mentioned aryldiazonium compound is mixed in advance, and this is applied or used by separately overcoating. In preparing the coating liquid, an inert solvent such as acetone, acetonitrile, toluene, xylene, methyl ethyl ketone, etc. may be used. Further, if necessary, an ultraviolet absorber or an antistatic agent may be added to the coating liquid in advance. When applying the above coating liquid to a molded product, it is necessary to adjust the temperature of the coated surface to within the range of 60 to 140°C. The coating film may peel off on the surface of the product, and conversely, the vinyl chloride resin in the molded product is likely to decompose at temperatures higher than the above 140°C. In the method of the present invention, the above temperature range is 60°C.
The molded article and/or coating liquid may be applied while being heated to a temperature in the range of ~140°C. Next, the above coating liquid is applied to a coating thickness of 1 to 30μ using a bar coater, roll coater, spray method, dipping method, etc. at the above temperature, and then, after 1 second to 3 minutes, the resulting coating film is irradiated with ultraviolet rays. do. Sources of the ultraviolet rays include mercury, xenon,
Ultraviolet lamps such as carbon arc or tungsten filament lamps are effectively used, and the irradiation conditions depend on the type of lamp and the intensity of the ultraviolet light (watts/cm).
The irradiation time is selected within the range of 0.5 to 60 seconds, although it varies depending on the situation. As mentioned above, when the coating liquid is first applied to the surface of the molded product under a temperature range of 60 to 140°C, the epoxy resin monomer and/or its low polymer dissolves the resin on the surface of the molded product. Since a diffusion layer is formed on the surface layer, the coating film adheres firmly and integrally to the surface of the molded product. The degree of diffusion of the above-mentioned diffusion layer onto the surface of the molded product is affected by the coating temperature and the elapsed time from application to ultraviolet irradiation, so it may be selected as appropriate from the above-mentioned coating condition range depending on the type and wall thickness of the molded product. . Next, the formed coating film is irradiated with ultraviolet rays as described above, and at the same time the photosensitive diazonium compound in the coating film decomposes to produce Lewis acid, which acts as a polymerization initiation catalyst, so that the epoxy resin monomer and/or its lower The polymerization of the polymer proceeds,
The coating is completely cured. At the same time, the polymerization of the epoxy resin extends to the diffusion layer formed on the surface of the molded article, so that the coating film hardens while firmly adhering to the molded article. As mentioned above, the cured film formed on the surface of the molded product is mainly made of epoxy resin with good weather resistance, so it covers the deterioration of the weather resistance of the molded product, and the cured film adheres integrally to the surface of the molded product. Since the cured film is formed using the same method, it has excellent effects such as eliminating the risk of the cured film peeling off over time. Furthermore, since the surface hardness of the cured film is increased, the cured film obtained by the present invention has the advantage that it is less likely to be damaged even when used as an exterior building material or various parts used outdoors. The present invention will be explained in more detail below with reference to Examples, but it goes without saying that the present invention is not limited thereto. In addition, all parts described in the following examples represent parts by weight. Example 1 The following formulations 1 and 2 were mixed separately using a Henschel mixer, and the mixture was kneaded using an 8-inch test roll at 180°C for 5 minutes.
Press molding was performed at 180°C for 10 minutes to obtain two types of sheets. Formulation 1 (transparent formulation) Polyvinyl chloride (degree of polymerization: 800, straight polymer) 100 parts Stabilizer (dibutyltin malate) 3 parts Lubricant (Waxop) 0.3 parts 2 (opaque formulation) Vinyl chloride resin (Vinyl chloride-ethylene copolymer) ...100 parts Stabilizing agent (tribasic lead sulfate) ...3 parts 〃 (Dibasic lead stearate) ...1〃 〃 (n lead stearate) ... 0.5〃 Pigment (gray)...1.0〃 For 100 parts of Asahi Denka product name: Ultraset ADX-800, which contains epoxy resin monomers and oligomers on the above two sheet surfaces, P
-Methoxybenzenediazonium hexafluorophosphate (manufactured by Asahi Denka Co., Ltd., product name: PS-33)
A coating solution made by mixing three parts of the following is applied to a thickness of 10 μm using a bar coater. At this time, combination-1
The sheet was coated with a coating liquid preheated to the temperature listed in Table 1 below, while the formulation
In the case of No. 2, the sheet itself was coated at the temperature shown in Table 1 below. After applying as above,
After 1 minute, the coated surface of each of the sheets was irradiated with ultraviolet rays using a Toshiba high-pressure mercury lamp H1000L under the conditions of an ultraviolet intensity of 30 W/cm and an irradiation time of 60 seconds to cure the coating film. Table 1 shows the comparative values of the weather resistance test results for the sheet on which the obtained cured coating was formed, the sheet itself, the sheet on which an acrylic resin coating was formed, and the sheet on which a saturated polyester film was laminated. The weather resistance test was conducted in accordance with JIS-A1415 and weathered 0, 500, 1000, 1500 and 2000.
The weather resistance of the samples after the time was comparatively evaluated based on the presence or absence of interfacial peeling, light transmittance % (for formulation-1, which is a transparent formulation), and color difference ΔE (for formulation-2, which is an opaque formulation).

【表】 表−1に示す如く本発明のうち配合−1の透明
シートを用い60℃及び100℃の温度で塗布したの
ち紫外線照射して得られたものは耐候性試験2000
時間後においても硬化膜の剥離現象はなく、ま
た、透明度(光線透過率%)もほとんど変つてい
ない。これに対し、常温で塗布した場合は1000時
間後に剥離を起している。 また、一方配合−2の不透明シートを用い80℃
及び140℃の温度で塗布したのち紫外線照射して
得られたものは硬化膜の剥離現象が見られず、ま
た変色(色差△E)は、極めて少ない。これに対
し、常温で塗布した場合は1000時間後に著しい変
色が見られた。 さらに比較試料としてシート自体及び該シート
にアクリル樹脂の塗膜を形成したもの、或いはシ
ートに飽和ポリエステルフイルムを積層被覆した
もの等は何れも本発明により得られたものに比べ
て耐候性が劣ることが明らかである。 実施例 2 実施例1に記載の配合−1のものをヘンシエル
ミキサにより混合し、該混合物をコートハンガー
ダイを取付けたシングルタイプスクリユー押出機
により0.8mm厚みのシートを押出しし、該シート
がポリシングロールを通過して、その表面温度が
140℃のとき実施例1に記載のコーテイング液を
ロールコーターを用いてシート片面に5μ厚みに
塗布した。このように塗布してのち5秒後にシー
トの塗膜面を紫外線強度80ワツト/cmの高圧水銀
ランプにより5秒間照射して塗膜を硬化せしめ、
引続きシート温度120℃のもとで波付けホーマー
に通して透明波板を得た。 得られた波板は、耐候性試験2000時間后におい
ても硬化膜が基材の波板から剥離せず、また透明
性もほとんど損われていなかつた。 実施例 3 実施例1に記載の配合−2のものをヘンシエル
ミキサーで混合し、該混合物を異形ダイを取付け
た同方向2軸押出機により肉厚3mmの断面リツプ
溝形鋼形状のデツキプレートを溶融押出しし、該
成形品形状を維持せしめつつ冷却ホーマーに通
し、成形品の表面温度が80℃のとき、予め60℃に
加温した実施例1同様のコーテイング液を用いて
スプレー法により成形品の上面に10μ厚みに塗布
した。かゝる塗布ののち10秒後に上記異形成形品
上面に形成した塗膜面を紫外線強度80ワツト/cm
の高圧水銀ランプにより3秒間照射して塗膜を硬
化せしめてデツキプレートを得た。 得られたデツキプレートは耐候性試験2000hrs
后においても硬化膜の剥離現象は全く見られず、
しかも、ほとんど変色していなかつた。 実施例 4 実施例1に記載の配合−1のものをヘンシエル
ミキサーで混合し、該混合物をTダイを取付けた
異方向2軸押出機により肉厚5mmのプレートを押
出しつゝ、該プレートをポリシングロール通過后
に放冷して、プレート表面温度が100℃のとき、
エポキシ樹脂モノマー(旭電化社製商品名:ウル
トラセツトM−28 100部に対して実施例1で用い
たP−メトキシベンゼンジアゾニウムヘキサフル
オロホスフエート5部混合してなるコーテイング
液(80℃に加温)中にプレートを浸漬して、プレ
ート両面に20μ厚みの塗膜を形成した。上記の如
く浸漬してのち10秒後にプレート両面の塗膜面を
紫外線強度80ワツト/cmの高圧水銀ランプにより
50秒間照射して塗膜を硬化せしめた。得られた透
明プレートは耐候性試験2000時間後においても硬
化膜の剥離は全く見られず、また透明性も損われ
ていなかつた。
[Table] As shown in Table 1, the transparent sheets of Formulation 1 of the present invention were coated at temperatures of 60°C and 100°C and then irradiated with ultraviolet rays.
Even after a period of time, there was no peeling phenomenon of the cured film, and the transparency (light transmittance %) remained almost unchanged. On the other hand, when applied at room temperature, peeling occurred after 1000 hours. In addition, on the other hand, using an opaque sheet of formulation-2, 80℃
In the case where the cured film was coated at a temperature of 140°C and then irradiated with ultraviolet rays, no peeling phenomenon was observed, and discoloration (color difference ΔE) was extremely small. On the other hand, when applied at room temperature, significant discoloration was observed after 1000 hours. Furthermore, as comparison samples, the sheet itself, the sheet coated with an acrylic resin coating, or the sheet laminated and coated with a saturated polyester film, etc., all have inferior weather resistance compared to the sheet obtained by the present invention. is clear. Example 2 The formulation-1 described in Example 1 was mixed using a Henschel mixer, and the mixture was extruded into a 0.8 mm thick sheet using a single type screw extruder equipped with a coat hanger die. After passing through the polishing roll, its surface temperature increases.
At 140° C., the coating solution described in Example 1 was applied to one side of the sheet to a thickness of 5 μm using a roll coater. After 5 seconds of application, the coated surface of the sheet was irradiated with ultraviolet light for 5 seconds using a high-pressure mercury lamp with an intensity of 80 watts/cm to cure the coating.
Subsequently, the sheet was passed through a corrugating former at a sheet temperature of 120°C to obtain a transparent corrugated sheet. In the obtained corrugated sheet, the cured film did not peel off from the base corrugated sheet even after 2000 hours of weather resistance test, and the transparency was hardly impaired. Example 3 The composition of Formulation-2 described in Example 1 was mixed in a Henschel mixer, and the mixture was processed into a deck plate having a cross-section of lip channel steel with a wall thickness of 3 mm using a co-directional twin-screw extruder equipped with a deformed die. was melt-extruded and passed through a cooling former while maintaining the shape of the molded product, and when the surface temperature of the molded product was 80°C, it was molded by a spray method using the same coating solution as Example 1 previously heated to 60°C. It was applied to the top surface of the product to a thickness of 10 μm. After 10 seconds after such application, the coating surface formed on the top surface of the irregularly shaped article was exposed to ultraviolet light with an intensity of 80 watts/cm.
The coating film was cured by irradiation for 3 seconds using a high-pressure mercury lamp to obtain a deck plate. The resulting deck plate has undergone a weather resistance test for 2000 hours.
Even after the treatment, no peeling phenomenon of the cured film was observed.
Moreover, there was almost no discoloration. Example 4 Blend-1 described in Example 1 was mixed in a Henschel mixer, and the mixture was extruded into a plate with a wall thickness of 5 mm using a twin-screw extruder in different directions equipped with a T-die. After passing through the polishing roll, let it cool and when the plate surface temperature is 100℃,
A coating solution prepared by mixing 100 parts of epoxy resin monomer (trade name: Ultraset M-28 manufactured by Asahi Denka Co., Ltd.) with 5 parts of the P-methoxybenzenediazonium hexafluorophosphate used in Example 1 (heated to 80°C). ) to form a coating film with a thickness of 20 μm on both sides of the plate. After 10 seconds of dipping as described above, the coated surfaces on both sides of the plate were exposed to a high-pressure mercury lamp with an ultraviolet intensity of 80 W/cm.
The coating was cured by irradiation for 50 seconds. The obtained transparent plate showed no peeling of the cured film even after 2000 hours of weather resistance test, and its transparency was not impaired.

Claims (1)

【特許請求の範囲】[Claims] 1 塩化ビニル樹脂成形品の表面に、エポキシ樹
脂モノマー及び/又はその低重合体ポリマーと感
光性アリールジアゾニウム化合物とを、塗布面が
60〜140℃の範囲となるように加熱しながら塗布
し、次いで該塗膜面に紫外線を照射して塗膜を硬
化せしめることを特徴とする耐候性改良塩化ビニ
ル樹脂成形品の製造方法。
1. An epoxy resin monomer and/or its low polymer and a photosensitive aryldiazonium compound are applied to the surface of a vinyl chloride resin molded product so that the coated surface is
1. A method for producing a weather-resistant vinyl chloride resin molded article, which comprises applying the coating while heating to a temperature in the range of 60 to 140°C, and then curing the coating by irradiating the coating surface with ultraviolet rays.
JP15900578A 1978-12-22 1978-12-22 Preparation of weather resistant improved vinyl chloride resin molded article Granted JPS5584331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15900578A JPS5584331A (en) 1978-12-22 1978-12-22 Preparation of weather resistant improved vinyl chloride resin molded article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15900578A JPS5584331A (en) 1978-12-22 1978-12-22 Preparation of weather resistant improved vinyl chloride resin molded article

Publications (2)

Publication Number Publication Date
JPS5584331A JPS5584331A (en) 1980-06-25
JPS6142732B2 true JPS6142732B2 (en) 1986-09-24

Family

ID=15684149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15900578A Granted JPS5584331A (en) 1978-12-22 1978-12-22 Preparation of weather resistant improved vinyl chloride resin molded article

Country Status (1)

Country Link
JP (1) JPS5584331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252218U (en) * 1988-10-11 1990-04-16

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5589330A (en) * 1978-12-27 1980-07-05 Diafoil Co Ltd Production of polyester
JPS57163568A (en) * 1981-04-01 1982-10-07 Asahi Denka Kogyo Kk Agricultural film
EP0119725B1 (en) * 1983-02-14 1988-04-20 RAYCHEM CORPORATION (a Delaware corporation) Laminates with improved adhesion
JPH0774282B2 (en) * 1992-01-29 1995-08-09 ゼネラル・エレクトリック・カンパニイ Method for producing acrylic coated polycarbonate articles
US8071176B2 (en) 2004-09-24 2011-12-06 Arkema Inc. Process for forming a weatherable polyvinyl chloride or polyolefin article

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871427A (en) * 1971-12-28 1973-09-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871427A (en) * 1971-12-28 1973-09-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252218U (en) * 1988-10-11 1990-04-16

Also Published As

Publication number Publication date
JPS5584331A (en) 1980-06-25

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