JPS58196237A - Surface treatment of polycarbonate moldings - Google Patents
Surface treatment of polycarbonate moldingsInfo
- Publication number
- JPS58196237A JPS58196237A JP57080774A JP8077482A JPS58196237A JP S58196237 A JPS58196237 A JP S58196237A JP 57080774 A JP57080774 A JP 57080774A JP 8077482 A JP8077482 A JP 8077482A JP S58196237 A JPS58196237 A JP S58196237A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- polycarbonate
- adhesion
- polymer
- coated
- 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
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はポリカーボネート成形品の表面処理法に関する
ものである。更に詳しくは、ポリカーボネート成形品の
表面の硬度、耐擦傷性、耐紫外線劣化性を向上させる表
面処理法に関する龜のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for surface treatment of polycarbonate molded articles. More specifically, this article relates to a surface treatment method for improving the surface hardness, scratch resistance, and ultraviolet deterioration resistance of polycarbonate molded articles.
プラスチックは成形性、軽量性、耐脩撃性等に優れてい
るが、一方で２表面硬度が不十分で傷つき易い、耐溶剤
性が劣る、層外使用での耐紫外線劣化性が悪い岬の欠点
を有している。Plastic has excellent moldability, light weight, and resistance to crushing, but on the other hand, it has insufficient surface hardness and is easily damaged, has poor solvent resistance, and has poor UV deterioration resistance when used outside the layer. It has its drawbacks.
これ等の欠点を改良する為化プライマー、とじてメチル
メタクリレートを５０重重量風上含む重合体をバインダ
ーとする塗料を塗装した後、更に四アルコキンシランと
アルキルトリアルコキシシランとの加水分解物から主と
して成る塗料を塗装する方法（特公昭５Ｏ−５９Ｏｆ６
号公報参照）ヤ、メチルメタクリレートを主とする塗料
を塗布し、加熱処理後見にオルガノトリアルコキシシラ
ンの加水分解物を主とすゐ塗料を塗布する方法（特開昭
５２−１３４５６５号公報参ｊりなどが提案されている
が、何れ４屋外使用に於ける耐候性に乏しく、サンシャ
インウェザ−メーター照射３００〜５０Ｇ時間で権膜の
密着性が失われる欠点が有シ、満足出来るものではなか
った。In order to improve these defects, a chemical primer was applied, and then a paint containing a polymer containing 50% methyl methacrylate as a binder was applied, and then a hydrolyzate of tetraalcoquine silane and alkyltrialkoxysilane was applied. Method of painting the main paint
(Refer to Japanese Patent Laid-Open No. 134565/1982) A method of applying a paint mainly containing methyl methacrylate and applying a paint mainly containing a hydrolyzate of organotrialkoxysilane after heat treatment (see Japanese Patent Laid-Open No. 134565/1983) However, these methods have been unsatisfactory as they have the drawback of poor weather resistance for outdoor use and loss of adhesion of the film after 300 to 50 G hours of sunshine weather meter irradiation. .
本発明者は、耐候性に優れ、しかも耐擦傷性も優れてい
るポリカーボネート成形品の表面特性の改良について鋭
意研究の結果、下記の特定塗料による二段塗布法によっ
て表面特性が′著しく改善され、しかも耐候性も改善さ
れゐことを見い出し本発明を完成した。As a result of intensive research into improving the surface properties of polycarbonate molded products, which have excellent weather resistance and scratch resistance, the present inventor found that the surface properties were significantly improved by a two-step coating method using the specific paint described below. Moreover, they discovered that the weather resistance was improved and completed the present invention.
即ち、本発明は、ポリカーボネート成形品の表面に、ポ
リアルキルアクリレート又はポリアル中ルメタアクリレ
ー トであって重量平均分子量が１０．Ｇｏｏ〜５０，
０００のポリマーを５〜２５呻及び該ポリマーに対して
紫外線吸収剤を５ ｗｔ４ｊ以上含有する塗料を塗布し
、加熱処理後見に一般式 Ｒ’ｆｌｌ（ＯＲ）、 （
但し、Ｒ、Ｒ’は炭素数１〜４のアルキル基）で示され
るアルキルトリアルコキシシランの部分加水分解縮合物
を主成分とする塗料を塗布硬化させることを特徴とする
ポリカーボネート成形品の一面処理法である。That is, in the present invention, a polyalkyl acrylate or a methacrylate in a polyalcohol having a weight average molecular weight of 10. Goo~50,
000 polymer and a paint containing 5 to 25 wt4j or more of an ultraviolet absorber to the polymer, and after heat treatment, the general formula R'fl(OR), (
However, R and R' are alkyl groups having 1 to 4 carbon atoms. It is the law.
本発明で使用されるポリカーボネート成形品トシては、
ビスフェノールＡとホスゲンからｅ導される芳香族ポリ
カーボネートやジエチレングリコールビスアリルカーボ
ネートの如き脂肪族ポリカーボネートなどのポリカーボ
ネート樹脂の成形品をあげることが出来る。The polycarbonate molded product used in the present invention is
Examples include molded products of polycarbonate resins such as aromatic polycarbonates derived from bisphenol A and phosgene and aliphatic polycarbonates such as diethylene glycol bisallyl carbonate.
本発明で第一に塗布される塗料は、ポリアルキルアクリ
レート又はポリアルキルメタアクリレートのホモポリマ
ーかもなり、具体例としては例えば、ポリメチル（メタ
）アクリレート、ポリエチル（メタ）アクリレート、ポ
リグロビル（メタ）アクリレート、ポリブチル（メタ）
アクリレート、ポリイソブチル（メタ）アクリレート、
ポリ２−エチルヘキシル（メタ）アクリレート、ポリヒ
ドロキシエチル（メタ）アクリレート等があげられるが
、特に好ましいのはポリメチルメタアクリレートのホモ
ポリマーであゐ。The paint first applied in the present invention may be a homopolymer of polyalkyl acrylate or polyalkyl methacrylate, and specific examples include polymethyl (meth)acrylate, polyethyl (meth)acrylate, polyglobil (meth)acrylate, Polybutyl (meth)
Acrylate, polyisobutyl (meth)acrylate,
Examples include poly 2-ethylhexyl (meth)acrylate, polyhydroxyethyl (meth)acrylate, etc., but particularly preferred is a homopolymer of polymethyl methacrylate.
これらのポリマーの分子量は重量平均分子量で１０，０
００〜５０，０００の範囲である仁とが必要である。こ
の理由としてはポリカーボネート成形品の熱膨張率が第
２の塗料の硬化膜に比較して大きく、この差の大きいこ
とは収縮、膨張によす界面での剥離の応力が大きく動く
ことＫなり、この剥離応力を吸収減少させる働きを第１
の塗料に持たせることが長期間密着性を保持するための
条件と考えられる。そのためＫはここで使用するポリマ
ーの分子量を上記範囲にすることにより剥離応力の吸収
が可能となると考えられる。分子量１０，０００未満で
は第２の塗料を塗布しても耐擦傷性が低く、分子量ｓ
ｏ、ｏ ｏ ｏを越えると長期間の耐候性試験に於て密
着性が低下し剥離が起こるので共に好ましくない。The weight average molecular weight of these polymers is 10.0
A value in the range of 00 to 50,000 is required. The reason for this is that the coefficient of thermal expansion of the polycarbonate molded product is larger than that of the cured film of the second paint, and this large difference means that the stress of peeling at the interface due to contraction and expansion moves greatly. The primary function is to absorb and reduce this peeling stress.
This is considered to be a condition for maintaining long-term adhesion. Therefore, it is considered that K can absorb peel stress by setting the molecular weight of the polymer used here in the above range. If the molecular weight is less than 10,000, the scratch resistance will be low even if a second paint is applied;
If it exceeds o or o o o, the adhesion will decrease and peeling will occur during a long-term weather resistance test, so both are unfavorable.
本発明に使用される紫外線吸収剤としては、ベンゾフェ
ノン系、ベンゾトリアゾール系、サリシレート系などを
挙げることが出来る。具体例としては２−ヒドロキシ−
４−オクトキシベンゾフェノン、２−ヒドロキシ−４−
メ）キシベンゾフヱノン、２，４−ヒドロキシベンツフ
ェノン、２−ヒドロキシ−４−ドデシロキシペンゾフェ
ノン、２−（２’−ヒドロキシ−５′−メチルフェニル
）ベンゾトリアゾール、２− （２’−ヒドロ争シー４
′−オクトキシフェニル）ベンゾトリアゾール、ｐ−ｔ
−プチルフェニルサリシＶ−ト、フェニルサリンレート
などを挙ケルコとが出来る０
本発明において、上記ポリマーは適尚な溶剤に溶解して
使用されるが、溶剤としては有機カルボン酸系、エステ
ル系、ケトン系、アルコール系、エーテル系、ノ・ロゲ
ン化炭化水素系、芳香族炭化水素系溶剤の１種又は１種
以上が使用される。これらの溶剤の使用Ｋｆｉりては紫
外線吸収剤の良溶剤であり、しかも上記のポリマーを溶
解するものであ〕、尚且りポリカーボネート成形品の外
磯を損わない溶剤を選択することが必要である。又、溶
剤中に含まれるポリマー濃度は５〜２５ ｗｔ％が望ま
しい。ｓ ｗｔ１未満では十分な密着性が得られず、し
かも耐候性でも劣る０又、ｚｓｗｔｌを越えると曳好＆
塗膜が得られず外観が不良とな）ともに好ましくない。Examples of the ultraviolet absorbent used in the present invention include benzophenone, benzotriazole, and salicylate. A specific example is 2-hydroxy-
4-Octoxybenzophenone, 2-hydroxy-4-
me)xybenzophenone, 2,4-hydroxybenzophenone, 2-hydroxy-4-dodecyloxypenzophenone, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2 '-Hydro Battle Sea 4
'-Octoxyphenyl)benzotriazole, p-t
In the present invention, the above-mentioned polymers are used after being dissolved in a suitable solvent. , ketone-based, alcohol-based, ether-based, non-logenated hydrocarbon-based, and aromatic hydrocarbon-based solvents. It is necessary to select a solvent that is a good solvent for the ultraviolet absorber and also dissolves the above-mentioned polymer, and will not damage the outer surface of the polycarbonate molded product. be. Further, the concentration of the polymer contained in the solvent is preferably 5 to 25 wt%. If it is less than swtl, sufficient adhesion cannot be obtained and the weather resistance is also poor, and if it exceeds zswtl, the pulling quality and
(No coating film is obtained and the appearance is poor) are both unfavorable.
添加する紫外線吸収剤の機度はポリマーに対して５ ｗ
ｔ９Ｇ以上であシ、よ）好重しくは１０〜４０ｗｔ９１
であＪ）、５ｗｔ９Ｇ未満では十分な耐候性が得られな
い。又４・Ｏｗｔ−を越えると、＊膜外観が不実となる
。The degree of ultraviolet absorber added is 5 w relative to the polymer.
It should be t9G or above, preferably 10-40wt91
If the weight is less than 5wt9G, sufficient weather resistance cannot be obtained. Moreover, if it exceeds 4.0wt-, *the film appearance becomes unrealistic.
第２に＃１布される塗料は、一般式１’ｌ’８１（ＯＲ
）。The second #1 coated paint has the general formula 1'l'81 (OR
).
（但し、Ｒ，Ｒ’は炭素数１〜４のアルキル基）で示さ
れるアルキルトリアルコキシシランの部分加水分解縮合
物を主成分とするものである。(However, R and R' are alkyl groups having 1 to 4 carbon atoms.) The main component is a partially hydrolyzed condensate of alkyltrialkoxysilane.
上記一般式で示されるアルキルトリアルコキシシランの
異体例としては、メチルトリメトキシシラン、メチルト
リエトキシシラン、エチルトリエトキシシラン、イング
ロビルトリメトキ７シラン、メチルトリプトキシシラン
等を挙げることが出来る。これ等のシランモノマーの加
水分解反応は反応触媒として微量の酸と１．５〜５モル
当量（対シランモノマー１４ル当））の水を加えて行う
。その際加水分解反応時の発熱による温度上昇を緩和す
る意味で低級アルコールを加えることも可能であるみ・
・
この様にして得られたアルキルトリアルコキシシランの
部分加水分解縮合物を使用しての第２の塗料の処方は硬
化触媒として第四級アンモニウム化合物、アルカリ金属
水酸化物、アルカリ金属の有機酸塩、ジアザ−ビシクロ
−アルケン類及びそれの塩類等を使用することが可能で
あシ、この液のポットライフを長くする為の処方として
ギ酸、酢酸、プロピオン酸、シュウ酸等の有横酸を加え
てｐＨを弱酸性のｐ！１４〜７、更ｔｃ［Ｌ＜ｄｐｉ
５〜６の範囲内に調整することが望ましい。又、表面物
性を更に改良する為には表面平滑剤や酸化防止剤、熱安
定剤の添加も好ましい。Examples of variants of the alkyltrialkoxysilane represented by the above general formula include methyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, inglobiltrimethoxysilane, and methyltriptoxysilane. The hydrolysis reaction of these silane monomers is carried out by adding a trace amount of acid and 1.5 to 5 molar equivalents (14 moles of silane monomer) of water as a reaction catalyst. At this time, it is also possible to add a lower alcohol to alleviate the temperature rise due to heat generated during the hydrolysis reaction.
- The formulation of the second paint using the partially hydrolyzed condensate of alkyltrialkoxysilane obtained in this way contains a quaternary ammonium compound, an alkali metal hydroxide, or an alkali metal organic acid as a curing catalyst. It is possible to use salts, diaza-bicyclo-alkenes and their salts, etc., and hydroxy acids such as formic acid, acetic acid, propionic acid, oxalic acid, etc. can be used as a prescription to extend the pot life of this liquid. In addition, the pH is slightly acidic! 14-7, further tc[L<dpi
It is desirable to adjust within the range of 5 to 6. Further, in order to further improve the surface properties, it is also preferable to add a surface smoothing agent, an antioxidant, and a heat stabilizer.
この様に本発明は第１の塗料のポリマーの種類、分子量
、濃度、紫外線吸収剤の添加量、そして第２の塗料のシ
ロキサンの選択によ〕ポリカーボネート成型品の表面に
耐擦傷性を付与し、しかも、その性能はサンシャインウ
ェザ−メーター照射１５００時間以上でも硬化膜の密着
性を保持することができる。この塗膜性能の精度を更に
高める為には第１の塗料の、乾−条件及び第２の塗料の
塗布、硬化条件に於いても夷好条件の選定が必要である
０第１の塗料や第２０塗料の一布方法としてはディップ
、スプレー、スピン、フロー等の方法が採用出来る０第
１の塗料の乾燥条件は６０〜１８０℃で５分以上が好オ
しい。又、第２の塗料の硬化条件はポリカーボネート成
形品の耐熱性にもよるが、一般には９０〜１５０℃で１
０分〜１０時間加熱硬化を行うことが適轟である。As described above, the present invention imparts scratch resistance to the surface of a polycarbonate molded product by selecting the type, molecular weight, concentration of the polymer in the first paint, the amount of ultraviolet absorber added, and the siloxane in the second paint. Furthermore, the adhesiveness of the cured film can be maintained even after 1500 hours of sunshine weather meter irradiation. In order to further improve the accuracy of this coating film performance, it is necessary to select favorable conditions for the drying conditions of the first paint and the application and curing conditions of the second paint. As the method of spreading the 20th paint, methods such as dip, spray, spin, flow, etc. can be adopted. The drying conditions for the 1st paint are preferably 60 to 180°C for 5 minutes or more. Furthermore, the curing conditions for the second paint depend on the heat resistance of the polycarbonate molded product, but generally it is cured at 90 to 150°C.
It is appropriate to carry out heat curing for 0 minutes to 10 hours.
以下に実施例を挙げて本発明を異体的に説明する。実施
例に於ける部はすべて重量部を表わす０
実施例−１
第１の塗料として重量子均分゛子量（Ｍ Ｗ ） ２５
，０００のポリメチルメタクリレート１５部をアセトン
１０部、メチルエチルケトン３０部、メチルイソブチル
ケトン１５部、イソブチルアルコール２４部、紫外線吸
収剤（２−ヒドロキシ−４−オクトキシベンゾフェノン
）４部に溶解したものを使用し九〇第２の塗料としては
メチルトリエトキシシランの部分加水分解縮合物３０部
をエタノール５０部、酢酸１０部、触媒その他１０部に
溶解したものを使用した。又、プラスチック基材は２１
０℃厚のポリカーボネートシートを使用して、これに第
１の塗料をディップコートシて１００℃で１０分間加熱
処理した。このようにして得られたポリカーボネートシ
ートは無色透明で４〜６ミクロンのポリメチルータクリ
レート層を有していた。この第１の塗料と基材のポリカ
ーボネートシートとの密着性は七ロハンテープ（日東電
気工業製ニット−セロハン粘着テープＡ２９）によるゴ
バン目ハクリテストに於いて１００７１００であった。The present invention will be explained in a different manner by giving examples below. All parts in the examples represent parts by weight.0 Example-1 As the first paint, the weight average molecular weight (M W ) 25
,000 polymethyl methacrylate dissolved in 10 parts of acetone, 30 parts of methyl ethyl ketone, 15 parts of methyl isobutyl ketone, 24 parts of isobutyl alcohol, and 4 parts of ultraviolet absorber (2-hydroxy-4-octoxybenzophenone) was used. 90 As the second paint, a solution of 30 parts of a partially hydrolyzed condensate of methyltriethoxysilane dissolved in 50 parts of ethanol, 10 parts of acetic acid, and 10 parts of catalyst and others was used. In addition, the plastic base material is 21
A polycarbonate sheet with a thickness of 0°C was dip coated with the first paint and heat treated at 100°C for 10 minutes. The polycarbonate sheet thus obtained was colorless and transparent and had a polymethyl taacrylate layer of 4 to 6 microns. The adhesion between this first paint and the base polycarbonate sheet was 1007100 in a cross-cut peel test using Shichirohan Tape (Knit-cellophane adhesive tape A29 manufactured by Nitto Electric Industries).
更にこのシートに第２の塗料をディップコートして１２
０℃で６６分間加熱硬化処理した。仁のようにして得ら
れたシートは無色透明で塗膜のクラックもない４〜６電
クロンの硬化膜層を形成していた。仁の第２の塗料の硬
化膜層と第１０塗料の塗膜層との密着性はセ四ハンテー
プによゐゴパン目ハクリテストに於いて１００／１００
であった。又、テーパー摩耗テスト（摩耗輪０８−１０
７．５０（１Ｆ荷重、１００サイβル）前後のｌヘーズ
ーはｓＩｓであｌ）、ａ。Furthermore, dip coat a second paint on this sheet and apply 12
Heat curing treatment was performed at 0° C. for 66 minutes. The sheet thus obtained was colorless and transparent, and had a cured film layer of 4 to 6 electrons without any cracks in the coating. The adhesion between the cured film layer of the second paint and the paint film layer of the 10th paint was 100/100 in a peel-off test using laundry tape.
Met. In addition, taper wear test (wear ring 08-10
7.50 (1F load, 100 cylinders) is sIs l), a.
℃温水ＶＣ５０日浸漬しても何ら変化なかった。No change was observed even after 50 days of immersion in VC warm water.
又、冷熱サイクルテスト（８０℃Ｘ ８ Ｈｒ−→−２
０℃×１６Ｈｒｓ→１サイクル）の１０サイクル後に於
いても何ら変化なかった。一方、促進耐候試験のサンシ
ャインウェザ−メーター照射２０００時間後に於いても
密着性は１００／１００を保持し、外観は無色透明でポ
リカーボネート特有の黄変性も防止してクラックも認め
られなかった。In addition, thermal cycle test (80°C x 8 Hr-→-2
There was no change even after 10 cycles (0°C x 16 hours → 1 cycle). On the other hand, even after 2000 hours of sunshine weather meter irradiation in the accelerated weathering test, the adhesion remained 100/100, the appearance was colorless and transparent, the yellowing characteristic of polycarbonate was prevented, and no cracks were observed.
実施例−２
第１の塗料として重量平均分子量（Ｍ Ｗ） ５０，０
００のポリメチルメタクリレート１０部をアセトン１０
部、メチル、−チルケトン３５部、メチルイソブチルケ
トン１８部、イソブチルアルコール２４部、紫外線吸収
剤（２−ヒドロキシ−４−オクトキシベンゾフェノン）
！ＩＮに溶解したものを使用した。これをポリカーボネ
ートシートにディップコートして１００℃？１０分間加
熱処履した。このシートは無色透明で４〜６建クロンの
ポリメチルメタクリレート層を有していた。Example-2 As the first paint, weight average molecular weight (MW) 50.0
00 polymethyl methacrylate and 10 parts of acetone.
35 parts of methyl, -thyl ketone, 18 parts of methyl isobutyl ketone, 24 parts of isobutyl alcohol, ultraviolet absorber (2-hydroxy-4-octoxybenzophenone)
! A solution dissolved in IN was used. Dip coat this on a polycarbonate sheet and heat it to 100℃? Heat treatment was performed for 10 minutes. This sheet was colorless and transparent and had a polymethyl methacrylate layer of 4 to 6 layers.
これＩ／ＩＣ実施例−１と同様の第２の塗料を塗布硬化
させた。この塗膜の性能は密着性に於いて第１の塗料と
基材、第２の塗料と第１の塗料の間は共に： １００／
１００であった。又、テーパー摩耗テＸ トｌｌＮｌ０
Ｉ ヘ−ス％ （ｊｅａｎｓ ％ ）は２．５ ％で
あった０４０℃温水に３０日間浸漬しても何ら変化はな
かった。冷熱サイクル１０サイクル後も変化はなかった
。一方、促進耐候試験のサンシャインウェザ−メーター
照射１５００時間後に於いても密着性は１００／１００
を保持し、外観の変化もなかった。A second coating material similar to I/IC Example-1 was applied and cured. The performance of this coating film is that the adhesion between the first paint and the base material and between the second paint and the first paint is: 100/
It was 100. Also, taper wear
Jeans % was 2.5%, and there was no change even after 30 days of immersion in 040°C hot water. There was no change even after 10 cooling/heating cycles. On the other hand, even after 1500 hours of sunlight weather meter irradiation in accelerated weathering tests, the adhesion remained 100/100.
was maintained, and there was no change in appearance.
実施例−５
実施例−１と同様処方中第１の塗料中の紫外線吸収剤を
ベンゾトリアゾール系の２− （２’−ヒドロキシ−４
′−ｎ−オクトキシフェニル）ベンゾトリアゾールに置
きかえて添加量４４部にし九処方で他は全て実施例−１
と同じとじ九。Example 5 In the same manner as in Example 1, the ultraviolet absorber in the first paint was substituted with benzotriazole-based 2-(2'-hydroxy-4
'-n-octoxyphenyl) benzotriazole was added in an amount of 44 parts, and all other formulations were Example-1.
The same binding.
この結果は密着性に於いて第１の塗料とポリカーボネー
ト基材、第２の塗料と第１０塗料との間は共Ｋ １００
／１００であった０又、テーパー摩耗テスト前後のΔヘ
ーズーは！１．２ ％であつ九。４０℃温水浸漬５０日
間、冷熱サイクルテスト１０サイクルに於いても何ら変
化なかった。一方、ナンシャインウエザーメーター・照
射１５００時間後に於いても密着性は１００／ｌｏｊを
保持し、外観の変化もなかった。This result shows that in terms of adhesion, both the first paint and the polycarbonate base material and the second paint and the tenth paint had a K of 100.
The Δ haze before and after the taper wear test was /100! 1.2%. No change was observed even after 50 days of immersion in 40°C hot water and 10 cycles of cold/heat cycle tests. On the other hand, the adhesion remained at 100/loj even after 1500 hours of irradiation with a Nanshine Weather Meter, and there was no change in appearance.
比較例−１
ポリカーボネートシートに第１の塗料のコートなし、＆
Ｃ実旅例−１と同様の第２の塗料をコートした後に加熱
硬化処理した。この第２の塗料の塗膜とポリカーボネー
トシートとの密着性はゴパン目ハクリテストで０ ／
１００であつ九。Comparative Example-1 No coating of the first paint on the polycarbonate sheet, &
A second coating material similar to that in Example C-1 was coated and then heat-cured. The adhesion between this second paint film and the polycarbonate sheet was determined to be 0/0 in the goblin peel test.
100 and nine.
比較例−２
１１部施例−１に於いて第１の塗料中に紫外線吸収剤を
添加しない他は実施例−１と同様にポリカーボネートシ
ー）Ｋ：ｆ−）した。密着性はゴパン目ハクリゾストで
１００／１００でｉりたが、サンシャインウェザ−メー
ター照射４００時間で密着性はＳ Ｏ／ １００であっ
た。Comparative Example-2 11 parts A polycarbonate sheet (K:f-) was prepared in the same manner as in Example-1 except that no ultraviolet absorber was added to the first coating material. The adhesion was 100/100 with the Gopanite chloride, but the adhesion was SO/100 after 400 hours of sunshine weather meter irradiation.
比較例−３
実施例−１に於いて第１の塗料中の紫外線吸収剤の添加
量を０．５部にして、実施例−１との差の３．５倍はイ
ソブチルアルコールに置き替えた他は実施例１と同様の
仁とを行つ九◇密着性はゴパン目ハクリテストで１００
／１００であったが、サンシャインウェザ−メーター照
射１０００時間で密着性は８０７１００であった。Comparative Example-3 In Example-1, the amount of ultraviolet absorber added in the first paint was changed to 0.5 part, and 3.5 times the difference from Example-1 was replaced with isobutyl alcohol. The rest was the same as in Example 1.9◇Adhesion was 100 in the Gopan eye peeling test.
/100, but the adhesion was 807100 after 1000 hours of sunshine weather meter irradiation.
比較例−４
実施例−２に於いて第１の塗料として重量平均分子量（
ＭＷ） １００，０００のポリメチルメタクリレート１
０部を使用した他は実施例−２と同様にポリカーボネー
トシートにコートした。密着性はゴパン目ハクリテスト
で１００／１００であったが、サンシャインウェザ−メ
ーター照射１０００時間で硬化膜にクラックが入シ、照
射１２００時間で密着性は？Ｏ／１００であった。Comparative Example-4 In Example-2, the weight average molecular weight (
MW) 100,000 polymethyl methacrylate 1
A polycarbonate sheet was coated in the same manner as in Example 2, except that 0 part was used. The adhesion was 100/100 in the goblin peel test, but cracks appeared in the cured film after 1000 hours of Sunshine Weather Meter irradiation, and what was the adhesion after 1200 hours of irradiation? It was O/100.
比較例−５
実施例−２に於いて第１の塗料として重量平均分子量（
ＭＹ） １００，０００のポリメチルメタクリレート１
０部を使用し、紫外線吸収剤を添加しない他は実施例−
２と同様にポリカーボネートシートにコートし九。密着
性はゴパン目ハクリテストで１［）Ｏ／１００であつ走
が、サンシャインウェザ−メーター照射６００時間で密
着性が１０／１００であった。Comparative Example-5 In Example-2, the weight average molecular weight (
MY) 100,000 polymethyl methacrylate 1
Example except that 0 part was used and no ultraviolet absorber was added.
Coat it on a polycarbonate sheet in the same way as in step 2. The adhesion was 1[)O/100 in the goblin peel test, and the adhesion was 10/100 after 600 hours of sunshine weather meter irradiation.
比較例−６
実施例−２に於いて第１の塗料のポリメチルメタクリレ
ートを３部使用した処方でポリカーボネートシートにコ
ートシ九。この場合のポリメチルメタクリレート層は１
〜１．５電クロンであつ九。これに第２の塗料を塗布し
て硬化膜層を形成させ九。この密着性は第１の塗料の塗
膜と基材のポリカーボネートシート間ではゴパン目ハク
リテストで１００／１００であつ九が、＃１２の塗料の
コート後のゴパン目ハクリテストでは、５０ ／ １０
０〜？Ｏ／１００であった。Comparative Example 6 A polycarbonate sheet was coated with the same formulation as in Example 2 using 3 parts of polymethyl methacrylate as the first paint. In this case, the polymethyl methacrylate layer is 1
~ 1.5 electrons and nine. 9. Apply a second paint to this to form a cured film layer. This adhesion was 100/100 between the first paint film and the base polycarbonate sheet in the goblin peeling test, and 50/10 in the goblin peeling test after coating #12 paint.
0~? It was O/100.
Claims (1)
レート又はポリアルキルメタアクリレートであって重量
平均分子量が１０，０００〜５０，０００のポリマーを
５〜２５育ｔ％及び骸ポリマーに対して紫外線吸収剤を
５ ｗｔ９１以上含有する塗料を塗布し、加熱処理後、
−に一般式Ｒ’８１（ＯＲ）。 （但し、Ｒ，には炭素数１〜４のアルキル基）で示され
るアルキルトリアルコキシシランの部分加水分解縮合物
を主成分とする塗料を塗布硬化させることを特徴とする
ポリカーボネート成形品の表面処理法。[Scope of Claims] On the surface of the polycarbonate molded product, 5 to 25 t% of a polymer of acrylate or polyalkyl methacrylate in 1 polyaline and having a weight average molecular weight of 10,000 to 50,000 is added to the surface of the polycarbonate molded product. After applying a paint containing 5wt91 or more of ultraviolet absorber and heat treatment,
- has the general formula R'81 (OR). (However, R is an alkyl group having 1 to 4 carbon atoms.) Surface treatment of polycarbonate molded articles characterized by applying and curing a paint mainly composed of a partially hydrolyzed condensate of alkyltrialkoxysilane represented by R. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57080774A JPS58196237A (en) | 1982-05-13 | 1982-05-13 | Surface treatment of polycarbonate moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57080774A JPS58196237A (en) | 1982-05-13 | 1982-05-13 | Surface treatment of polycarbonate moldings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58196237A true JPS58196237A (en) | 1983-11-15 |
| JPS6135220B2 JPS6135220B2 (en) | 1986-08-12 |
Family
ID=13727768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57080774A Granted JPS58196237A (en) | 1982-05-13 | 1982-05-13 | Surface treatment of polycarbonate moldings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58196237A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043184A (en) * | 1989-02-06 | 1991-08-27 | Somar Corporation | Method of forming electrically conducting layer |
| WO1997002311A1 (en) * | 1995-06-30 | 1997-01-23 | Origin Electric Company, Limited | Surface-coated molded plastic articles having good durability |
| US7261673B2 (en) | 2002-10-21 | 2007-08-28 | Nissan Diesel Motor Co., Ltd. | Apparatus for controlling automatic transmission |
| JP2011236356A (en) * | 2010-05-12 | 2011-11-24 | Yokohama Rubber Co Ltd:The | Primer composition for sealing material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180311A (en) * | 1988-12-29 | 1990-07-13 | Canon Inc | Seal type dynamic pressure fluid bearing motor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5039096A (en) * | 1973-08-08 | 1975-04-10 | ||
| JPS52138565A (en) * | 1976-05-17 | 1977-11-18 | Teijin Chemicals Ltd | Method of surface treatment of plastic formed article |
| JPS53138476A (en) * | 1977-05-10 | 1978-12-02 | Sumitomo Chem Co Ltd | Improvement of surafce hardeness |
| JPS56161872A (en) * | 1980-05-19 | 1981-12-12 | Sumitomo Chem Co Ltd | Coating of surface |
| JPS56161871A (en) * | 1980-05-16 | 1981-12-12 | Sumitomo Chem Co Ltd | Protection of surface |
| JPS57162729A (en) * | 1981-03-30 | 1982-10-06 | Mitsubishi Gas Chem Co Inc | Preparation of molded article of polycarbonate resin having improved wear resistance |
| JPS57162728A (en) * | 1981-03-30 | 1982-10-06 | Mitsubishi Gas Chem Co Inc | Preparation of molded article of polycarbonate with coating film having improved surface characteristic |
| JPS57177028A (en) * | 1981-04-23 | 1982-10-30 | Sumitomo Chem Co Ltd | Surface treatment of synthetic resin molded article |
-
1982
- 1982-05-13 JP JP57080774A patent/JPS58196237A/en active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5039096A (en) * | 1973-08-08 | 1975-04-10 | ||
| JPS52138565A (en) * | 1976-05-17 | 1977-11-18 | Teijin Chemicals Ltd | Method of surface treatment of plastic formed article |
| JPS53138476A (en) * | 1977-05-10 | 1978-12-02 | Sumitomo Chem Co Ltd | Improvement of surafce hardeness |
| JPS56161871A (en) * | 1980-05-16 | 1981-12-12 | Sumitomo Chem Co Ltd | Protection of surface |
| JPS56161872A (en) * | 1980-05-19 | 1981-12-12 | Sumitomo Chem Co Ltd | Coating of surface |
| JPS57162729A (en) * | 1981-03-30 | 1982-10-06 | Mitsubishi Gas Chem Co Inc | Preparation of molded article of polycarbonate resin having improved wear resistance |
| JPS57162728A (en) * | 1981-03-30 | 1982-10-06 | Mitsubishi Gas Chem Co Inc | Preparation of molded article of polycarbonate with coating film having improved surface characteristic |
| JPS57177028A (en) * | 1981-04-23 | 1982-10-30 | Sumitomo Chem Co Ltd | Surface treatment of synthetic resin molded article |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043184A (en) * | 1989-02-06 | 1991-08-27 | Somar Corporation | Method of forming electrically conducting layer |
| WO1997002311A1 (en) * | 1995-06-30 | 1997-01-23 | Origin Electric Company, Limited | Surface-coated molded plastic articles having good durability |
| US6048617A (en) * | 1995-06-30 | 2000-04-11 | Origin Electric Company, Limited | Surface-coated molded plastic articles having good durability |
| US7261673B2 (en) | 2002-10-21 | 2007-08-28 | Nissan Diesel Motor Co., Ltd. | Apparatus for controlling automatic transmission |
| JP2011236356A (en) * | 2010-05-12 | 2011-11-24 | Yokohama Rubber Co Ltd:The | Primer composition for sealing material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135220B2 (en) | 1986-08-12 |
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