JPH05117549A - Undercoating composition - Google Patents
Undercoating compositionInfo
- Publication number
- JPH05117549A JPH05117549A JP2659392A JP2659392A JPH05117549A JP H05117549 A JPH05117549 A JP H05117549A JP 2659392 A JP2659392 A JP 2659392A JP 2659392 A JP2659392 A JP 2659392A JP H05117549 A JPH05117549 A JP H05117549A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- chlorinated
- weight
- epoxy resin
- 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】本発明はポリオレフィン系樹脂シ
ートおよび成型物に対して上塗り塗料との間に位置し、
上塗り塗料および下地樹脂表面に対し優れた付着性を有
する下塗り塗料組成物に関するものである。BACKGROUND OF THE INVENTION The present invention is located between a polyolefin resin sheet and a molded article and a top coating,
The present invention relates to an undercoat paint composition having excellent adhesion to the surface of a topcoat paint and a base resin.
【０００２】[0002]
【従来の技術】ポリプロピレン樹脂は有用なプラスチッ
ク材料として多様な部門に使用されているが、樹脂の特
性として極性が低く、結晶性が高いため、通常使用され
るエポキシ、アルキド、アクリル、メラミン、ウレタン
樹脂系の塗料では付着力が低く、実用上問題となる。そ
のため、ポリプロピレン樹脂フィルムおよび成型物を塗
装する際には第１の方法としてプラズマ、火焔またはオ
ゾンガスによって表面を酸化し、素材表面にエッチング
および表面極性の付与を行った後塗装する方法、第２の
方法としてポリプロピレン樹脂に対して付着性の高い下
塗り組成物を試用してポリプロピレン表面と上塗り塗料
との付着性を改良する方法が知られている。2. Description of the Related Art Polypropylene resin is used as a useful plastic material in various departments. However, since the resin has low polarity and high crystallinity, epoxy, alkyd, acrylic, melamine, urethane, which are commonly used, are used. Resin-based paints have low adhesion and pose a practical problem. Therefore, when coating the polypropylene resin film and the molded product, the first method is to oxidize the surface by plasma, flame or ozone gas, and then perform the etching and the surface polarity application on the material surface, and then the second method. As a method, there is known a method in which an undercoat composition having high adhesion to a polypropylene resin is tried to improve the adhesion between the polypropylene surface and the top coating composition.
【０００３】上記下塗り塗料組成物としては塩素化ポ
リプロピレン、塩素化エチレン−ロジンエステル、芳香
族石油樹脂の組成物（特開昭５８−８７３４号）、塩
素化ポリオレフィン−メチルメタクリレート組成物（特
開昭５８−７１９６６号）および塩素化ポリオレフィ
ン−（メタ）アクリル酸アミド組成物（特開昭５７−１
９８７６３号）などが提案されている。As the undercoat coating composition, a composition of chlorinated polypropylene, chlorinated ethylene-rosin ester, aromatic petroleum resin (JP-A-58-8734), chlorinated polyolefin-methyl methacrylate composition (JP-A-SHO) 58-71966) and a chlorinated polyolefin- (meth) acrylic acid amide composition (JP-A-57-1).
No. 98763) has been proposed.
【０００４】[0004]
【発明が解決すべき課題】しかしながら、従来の第１の
方法におけるプラズマ火焔およびオゾンガスによる表面
処理は複雑な工程を有している上、表面の複雑な成型物
では均一な処理が行えず、部位によってはポリオレフィ
ン樹脂に対する塗膜の付着力が低い部分ができる問題点
がある。他方、第２の方法では前記表面処理の必要はな
いが、付着力の耐温水性や耐湿性を向上させるためには
素材表面をＴＣＥ（トリクロロエタン）ベーパー脱脂ま
たはＩＰＡ（イソプロピルアルコール）やトルエンワイ
プによる前処理が必要である。そこで、本発明は上記第
２方法に用いる下塗り塗料であって、しかも上記前処理
を行わずとも作成または成形されたままのポリオレフィ
ン樹脂製品に対し高い付着力を有し、しかも耐温水性や
耐湿性に優れる下塗り塗料組成物を提供することを目的
とする。However, the surface treatment with plasma flame and ozone gas in the first conventional method has complicated steps, and in addition, uniform treatment cannot be performed with a molded article having a complicated surface, In some cases, there is a problem that a portion of the coating film having a low adhesion to the polyolefin resin is formed. On the other hand, in the second method, the surface treatment is not required, but the material surface is treated with TCE (trichloroethane) vapor degreasing or IPA (isopropyl alcohol) or toluene wipe to improve the hot water resistance and moisture resistance of the adhesive force. Pretreatment is required. Therefore, the present invention is an undercoat paint used in the second method, which has a high adhesive force to a polyolefin resin product as produced or molded without the above-mentioned pretreatment, and has a high temperature resistance against water and humidity. An object is to provide an undercoating coating composition having excellent properties.
【０００５】[0005]
【課題を解決するための手段】本発明は塩素含有率１５
〜３５重量％の塩素化ポリオレフィン系樹脂１００重量
部と、エポキシ当量５０〜６００のエポキシ樹脂２〜７
０重量部とを主成分として含有するポリオレフィン系樹
脂用下塗り塗料組成物にある。The present invention has a chlorine content of 15
~ 35 wt% chlorinated polyolefin resin 100 parts by weight and epoxy equivalent 50 ~ 600 epoxy resin 2-7
An undercoat coating composition for a polyolefin resin, which contains 0 part by weight as a main component.
【０００６】本発明で用いる塩素化ポリオレフィン系樹
脂としては、例えばエチレン、プロピレン、１−ブテ
ン、３−メチル−１−ブテン、３−メチル−１−ペンテ
ン等α−オレフィンの単独重合体もしくは共重合体、α
−オレフィンと他の単量体との共重合体、例えばエチレ
ン−酢酸ビニル、エチレン−ブタジエン、エチレン−ア
クリル酸エステルの共重合体を塩素化したものが使用可
能であるが、塩素化ポリプロピレン、塩素化ポリエチレ
ン、塩素化ポリプロピレン−エチレン共重合体、塩素化
エチレン−酢酸ビニル、及びこれら塩素化ポリオレフィ
ンの混合物を用いるのが好ましい。その塩素化率を１５
〜３５重量％とするのは１５重量％未満では溶剤に対す
る溶解性が悪くなり、樹脂塗料安定性が低下する。他
方、３５重量％を越えるとポリオレフィン樹脂に対する
付着性が低下する傾向にあるからである。Examples of the chlorinated polyolefin resin used in the present invention include homopolymers or copolymers of α-olefins such as ethylene, propylene, 1-butene, 3-methyl-1-butene and 3-methyl-1-pentene. Union, α
-A copolymer of an olefin and another monomer, for example, a chlorinated copolymer of ethylene-vinyl acetate, ethylene-butadiene, ethylene-acrylic acid ester can be used, but chlorinated polypropylene, chlorine Preference is given to using chlorinated polyethylene, chlorinated polypropylene-ethylene copolymers, chlorinated ethylene-vinyl acetate and mixtures of these chlorinated polyolefins. The chlorination rate is 15
If it is less than 15% by weight, the solubility in a solvent will be poor and the stability of the resin coating will be lowered. On the other hand, if it exceeds 35% by weight, the adhesion to the polyolefin resin tends to decrease.
【０００７】他方、エポキシ樹脂としてはエポキシ当量
５０〜６００のものが選ばれる。エポキシ当量が６００
以上のものは上記塩素化ポリオレフィンとの相溶性に欠
ける一方、エポキシ当量が５０以下のものは塗膜を形成
した際の架橋密度が低く、付着性が低下することになる
からである。使用できるエポキシ樹脂としてはソルビト
ール系、グリコールエーテル系、ビスフェノール系のも
のが挙げられる。ソルビトール系エポキシ樹脂は通常５
０〜１７０程度のエポキシ当量を有し、グリコールエー
テル系エポキシ樹脂は５００〜６００程度のエポキシ当
量を有し、ビスフェノール系エポキシ樹脂は１８０〜２
００程度のエポキシ当量を有するからである。特に上記
エポキシ樹脂の内その水溶性が５０％以下のものを用い
ると、上塗り塗料の耐水変色性が改善されることが見い
出されている。通常、水溶率の低いものとしては構造中
に水酸基の少ないエポキシ樹脂が選択される。ここで、
水溶率とは水９０重量％に対し樹脂１０重量％を室温で
溶解させた時の、その溶解率をいう。水溶率１００％と
は上記溶液をガラス板上に流し、溶解残渣の残らないも
のをいい、５０％とは樹脂分の５０％が溶解せずに残渣
として残るもので、その残渣量は体積をメスシリンダー
にて測定し、該測定体積と樹脂の比重を掛けることにに
よって測定した。On the other hand, an epoxy resin having an epoxy equivalent of 50 to 600 is selected. Epoxy equivalent is 600
This is because the above-mentioned ones lack compatibility with the above-mentioned chlorinated polyolefin, while those having an epoxy equivalent of 50 or less have a low cross-linking density when a coating film is formed, resulting in a decrease in adhesion. Epoxy resins that can be used include sorbitol-based, glycol ether-based, and bisphenol-based epoxy resins. Sorbitol-based epoxy resin is usually 5
The epoxy equivalent is about 0 to 170, the glycol ether epoxy resin is about 500 to 600, and the bisphenol epoxy resin is about 180 to 2
This is because it has an epoxy equivalent of about 00. In particular, it has been found that when the water solubility of the epoxy resin is 50% or less, the discoloration resistance of the top coating composition is improved. Usually, an epoxy resin having a small number of hydroxyl groups in the structure is selected as a resin having a low water solubility. here,
The water solubility refers to the dissolution rate when 10% by weight of resin is dissolved in 90% by weight of water at room temperature. A water solubility of 100% means that the above solution is poured onto a glass plate and no dissolution residue remains, and 50% means that 50% of the resin component does not dissolve and remains as a residue. It was measured by a graduated cylinder and the product was multiplied by the specific gravity of the resin.
【０００８】上記塩素化ポリオレフィン系樹脂とエポキ
シ樹脂との配合割合は塩素化ポリオレフィン系樹脂１０
０重量部に対しエポキシ樹脂１〜７０重量部、さらに好
ましくは４〜５０重量部が選ばれる。この範囲以外では
ポリオレフィン系樹脂に対し付着力が低下し、特に１重
量部以下では塗料安定性も低下することになる。The mixing ratio of the chlorinated polyolefin resin and the epoxy resin is such that the chlorinated polyolefin resin 10
The epoxy resin is selected from 1 to 70 parts by weight, more preferably 4 to 50 parts by weight, based on 0 parts by weight. If it is outside this range, the adhesion to the polyolefin resin will be reduced, and especially if it is less than 1 part by weight, the coating stability will be reduced.
【０００９】特に、第３級アミンを下塗り塗料組成物に
対して０.１〜１５重量％添加するのが好ましい。その
理由は塗膜の硬化反応を促進させ、架橋密度を高くする
ことにより、より強靭な塗膜を形成させるからである。It is particularly preferable to add a tertiary amine in an amount of 0.1 to 15% by weight based on the undercoat coating composition. The reason is that the toughening coating film is formed by promoting the curing reaction of the coating film and increasing the crosslinking density.
【００１０】本発明組成物はポリオレフィン系樹脂素材
表面に塗装後自然乾燥（２０℃×１０分）または強制乾
燥（６０℃×５分）し、上塗り塗料を塗布する。上塗り
塗料としては特に各種２液ウレタン塗料、各種１液ウレ
タン塗料、各種メラミン塗料が好ましい。The composition of the present invention is naturally dried (20 ° C. × 10 minutes) or forcedly dried (60 ° C. × 5 minutes) after coating on the surface of a polyolefin resin material, and a top coat paint is applied. As the top coating, various two-component urethane coatings, various one-component urethane coatings, and various melamine coatings are particularly preferable.
【００１１】[0011]
【発明の効果】本発明の下塗り塗料組成物を使用する
と、下地ポリオレフィン系樹脂製品表面になんら前処理
を施すことなく、上塗り塗料と下地ポリオレフィン系樹
脂表面との層間付着力を向上させ、特にその付着力の耐
温水性、耐湿性を優れた結果を示す。その作用機構は明
らかでないが、第１に表面張力を調整し、ポリオレフィ
ン系樹脂表面に対するぬれ性が高くなり、第２に内部応
力が残りにくい組成になり、第３に自己架橋により強靭
な塗膜を形成するからと思われる。したがって、本発明
塗料組成物を使用すると、塗装作業性を著しく向上させ
るとともに、浴槽においては温水下に繰り返し使用され
るが、その上塗り塗料の耐久性に優れることになる。ま
た、耐水性試験において、上塗り塗料の耐水変色性を必
要とする場合、例えばカラードバンパーの下塗り塗料と
しては、上記エポキシ樹脂として水溶率５０％以下のも
のを選択することにより上記付着性、耐水性の外に上塗
り塗料の耐水変色性を得ることができ、長期にわたり上
塗り塗料に剥離、ブリイスター発生、変色が生じない。EFFECTS OF THE INVENTION The undercoating coating composition of the present invention improves the interlayer adhesion between the topcoating coating and the surface of the base polyolefin-based resin without any pretreatment on the surface of the base polyolefin-based resin product. Excellent results in hot water resistance and moisture resistance of adhesion are shown. Although the mechanism of action is not clear, firstly, the surface tension is adjusted, the wettability to the surface of the polyolefin-based resin is increased, secondly the composition is such that internal stress hardly remains, and thirdly, a strong coating film by self-crosslinking. It seems to form. Therefore, when the coating composition of the present invention is used, the coating workability is remarkably improved, and the durability of the top coating composition is excellent even though it is repeatedly used under hot water in a bath. Further, in the water resistance test, when water discoloration resistance of the top coating material is required, for example, as the undercoat coating material of the colored bumper, the epoxy resin having a water content of 50% or less is selected to obtain the adhesion and water resistance. In addition to the above, the water resistant discoloration resistance of the top coating can be obtained, and peeling, blister generation and discoloration do not occur in the top coating for a long period of time.
【００１２】[0012]
【実施例】以下、本発明の具体的実施例について説明す
る。なお、部は重量部を示す。 （実施例１）塩素含有率２５重量％の塩素化ポリプロピ
レンのトルエン溶液（塩素化ポリプロピレン含有率２０
％）１００部にソルビトール系エポキシ樹脂（エポキシ
当量１７０、平均分子量６３０、官能基４）２部を混合
し、得られた下塗り塗料組成物を前処理なしでポリプロ
ピレン板に膜厚５〜１０μmになるようにスプレー塗装
し、室温で５分乾燥後、通常の２液ウレタン塗料を塗布
し、７０℃×３０分乾燥した後、３日間放置し、その塗
膜性能を試験した。結果を表１に示す。EXAMPLES Specific examples of the present invention will be described below. In addition, a part shows a weight part. Example 1 A toluene solution of chlorinated polypropylene having a chlorine content of 25% by weight (chlorinated polypropylene content of 20
%) 100 parts of sorbitol-based epoxy resin (epoxy equivalent 170, average molecular weight 630, functional group 4) 2 parts are mixed, and the resulting undercoat coating composition is formed on a polypropylene plate to a film thickness of 5 to 10 μm without pretreatment. After spray coating as described above and drying at room temperature for 5 minutes, a normal two-component urethane paint was applied, dried at 70 ° C. for 30 minutes, and allowed to stand for 3 days, and the coating film performance was tested. The results are shown in Table 1.
【００１３】（実施例２）塩素含有率２５重量％の塩素
化ポリプロピレンのトルエン溶液（塩素化ポリプロピレ
ン含有率２０％）１００部にグリコールエーテル系エポ
キシ樹脂（エポキシ当量５８３、平均分子量１１００、
官能基２）２部を混合し、得られた下塗り塗料組成物を
前処理なしで実施例１と同様にして塗布し、その塗膜性
能を試験した。その結果を表１に示す。Example 2 100 parts of a toluene solution of chlorinated polypropylene having a chlorine content of 25% by weight (chlorinated polypropylene content of 20%) was added to a glycol ether epoxy resin (epoxy equivalent 583, average molecular weight 1100,
Two parts of the functional group 2) were mixed, and the resulting undercoat coating composition was applied in the same manner as in Example 1 without pretreatment, and the coating film performance was tested. The results are shown in Table 1.
【００１４】（実施例３）塩素含有率２５重量％の塩素
化ポリプロピレンのトルエン溶液（塩素化ポリプロピレ
ン含有率２０％）１００部にグリコールエーテル系エポ
キシ樹脂（エポキシ当量５８３、平均分子量１１００、
官能基２）１０部を混合し、得られた下塗り塗料組成物
を前処理なしで実施例１と同様にして塗布し、その塗膜
性能を試験した。その結果を表１に示す。Example 3 100 parts of a chlorinated polypropylene toluene solution having a chlorine content of 25% by weight (chlorinated polypropylene content of 20%) was added to a glycol ether epoxy resin (epoxy equivalent: 583, average molecular weight: 1100).
10 parts of the functional group 2) was mixed, and the resulting undercoat coating composition was applied in the same manner as in Example 1 without pretreatment, and its coating film performance was tested. The results are shown in Table 1.
【００１５】（実施例４）塩素含有率２５重量％の塩素
化ポリプロピレンのトルエン溶液（塩素化ポリプロピレ
ン含有率２０％）１００部にソルビトール系エポキシ樹
脂（エポキシ当量１７０、平均分子量６３０、官能基
４）１.４３部、３級アミン０.３部を混合し、得られた
下塗り塗料組成物を前処理なしで実施例１と同様にして
塗布し、その塗膜性能を試験した。結果を表１に示す。(Example 4) 100 parts of a chlorinated polypropylene toluene solution having a chlorine content of 25% by weight (chlorinated polypropylene content of 20%) was added to a sorbitol epoxy resin (epoxy equivalent 170, average molecular weight 630, functional group 4). 1.43 parts of a tertiary amine and 0.3 part of a tertiary amine were mixed and the resulting undercoat coating composition was applied in the same manner as in Example 1 without pretreatment, and its coating film performance was tested. The results are shown in Table 1.
【００１６】（比較例）塩素含有率２５重量％の塩素化
ポリプロピレンのトルエン溶液（塩素化ポリプロピレン
含有率２０％）を下塗り塗料として用い、前処理なしで
実施例１と同様にして塗布し、その塗膜性能を試験し
た。その結果を表１に示す。Comparative Example A toluene solution of chlorinated polypropylene having a chlorine content of 25% by weight (chlorinated polypropylene content of 20%) was used as an undercoat paint and applied in the same manner as in Example 1 without pretreatment. The coating performance was tested. The results are shown in Table 1.
【００１７】（試験方法） 付着性（ゴバン目試験） カッターナイフを使用し、素地に達する２mmのゴバン目
１００個（10×10）を作り、セロハンテープをゴバン目
上に密着させ、上記テープの１端を有効面に直角に保
ち、０.５mm/s以上の速さで瞬間的に引き離し、その剥離
個数により素地への付着性を判定する。 付着性（クロスカット試験） カッターナイフを使用し、素地に達する交差角度３０度
の切れ目を作り、セロハンテープを切れ目に密着させ、、
上記テープの一端を有効面に直角に保ち、０.５mm/s以上
の速さで瞬間的に引き離し、剥離状況により素地への付
着性を判定する。 二次付着性（ゴバン目試験） 脱イオン水または蒸留水を恒温水槽に入れ、試験品を浸
漬し、４０℃に保ち、２４０時間浸漬する。その後、室
温で１時間放置した後、付着性（ゴバン目試験）を行
う。(Test method) Adhesiveness (goggle test) Using a cutter knife, 100 goggles (2 × 10 mm) that reach the base material (10 × 10) were made, and cellophane tape was adhered to the goggles and the tape Keep one end at right angle to the effective surface, and instantaneously separate it at a speed of 0.5 mm / s or more, and judge the adhesion to the substrate by the number of the separated pieces. Adhesion (Cross-cut test) Using a cutter knife, make a cut with a crossing angle of 30 degrees that reaches the substrate, and attach cellophane tape to the cut,
One end of the tape is kept perpendicular to the effective surface and is momentarily separated at a speed of 0.5 mm / s or more, and the adhesion to the substrate is judged by the peeling condition. Secondary Adhesiveness (Gourd Eye Test) Deionized water or distilled water is placed in a constant temperature water bath, the test article is dipped, kept at 40 ° C., and dipped for 240 hours. After that, it is left at room temperature for 1 hour, and then adhered (goose-eye test).
【００１８】剥離強度（１８０゜） 試験片（長さ５cm、巾１cm）に、試験片の５０％がカバ
ーできるように耐熱テープを密着させ、通常工程による
塗装を行う。塗装後７２時間放置し、耐熱テープ部を塗
膜を切断しないように剥離し、素地に対して１８０゜の
方向で剥離強度を測定する。Peel strength (180 °) A test piece (length: 5 cm, width: 1 cm) is adhered to a heat-resistant tape so that 50% of the test piece can be covered, and coating is carried out by a normal process. The coating is left for 72 hours after coating, the heat-resistant tape portion is peeled off without cutting the coating film, and the peel strength is measured in a direction of 180 ° with respect to the substrate.
【００１９】（試験結果）表１の結果から明らかなよう
に、本発明の下塗り塗料では前処理あり無しに拘わら
ず、試験結果は変わらず、また、上塗り塗料の剥離強度
は６００ｇ／cm以上で十分であるが、比較例の場合は前
処理の有り無しにより試験結果は変化し、剥離強度も不
十分であった。(Test Results) As is clear from the results shown in Table 1, the test results of the undercoat paint of the present invention were the same regardless of the pretreatment, and the peel strength of the overcoat paint was 600 g / cm or more. Although sufficient, in the case of the comparative example, the test results varied depending on the presence or absence of pretreatment, and the peel strength was also insufficient.
【００２０】[0020]
【表１】 [Table 1]
【００２１】なお、上記塗装は素材にプライマーを塗装
し、２液ウレタン上塗り塗装を行い、７０℃で３０分間
乾燥させた。In the above coating, a primer was coated on the material, a two-component urethane top coating was applied, and the coating was dried at 70 ° C. for 30 minutes.
【００２２】（耐水変色性試験）上記実施例１および３
ならびに下記実施例５〜８および比較実施例１〜３にお
いて併用するエポキシ樹脂の水溶率を調査し、その水溶
率と耐水変色性との関係を試験して調査し、表２に上記
付着性および剥離強度とともに表示した。 尚、耐水変
色性試験は、試験品を４０℃の恒温水槽に２４０Ｈ（１
０日）浸せき後取り出し、直ちに、限度見本との比較を
目視で判定するという手順にて行う。 （実施例５〜８）塩素含有率２５重量％の塩素化ポリプ
ロピレンのトルエン溶液（塩素化ポリプロピレン含有率
２０％）１００部にソルビトール系エポキシ樹脂（エポ
キシ当量、平均分子量、官能基は表２に示す通り、水溶
率は５０％以下）またはグリコールエーテル系エポキシ
樹脂（エポキシ当量、平均分子量、官能基は表２に示す
通り、水溶率は５０％以下）を表２に示す重量部混合
し、得られた下塗り塗料組成物を前処理なしでポリプロ
ピレン板に膜厚５〜１０μmになるようにスプレー塗装
し、室温で５分乾燥後、通常の２液ウレタン塗料を塗布
し、７０℃×３０分乾燥した後、３日間放置し、その塗
膜性能を試験した。結果を表２に示す。(Water Discoloration Resistance Test) The above Examples 1 and 3
Also, the water solubility of the epoxy resins used in combination in the following Examples 5 to 8 and Comparative Examples 1 to 3 was investigated, and the relationship between the water solubility and water discoloration resistance was tested and investigated. It is shown together with the peel strength. In addition, in the water discoloration resistance test, the test product was placed in a constant temperature water bath at 40 ° C. for 240H (1
(0 day) Take out after soaking and immediately perform a procedure of visually comparing with the limit sample. (Examples 5 to 8) 100 parts of a toluene solution of chlorinated polypropylene having a chlorine content of 25% by weight (chlorinated polypropylene content of 20%) was added to a sorbitol-based epoxy resin (epoxy equivalent, average molecular weight, functional groups are shown in Table 2). Water content is 50% or less) or a glycol ether epoxy resin (epoxy equivalent, average molecular weight, functional group is as shown in Table 2, water content is 50% or less) is mixed by parts by weight shown in Table 2 to obtain The undercoat coating composition was spray-coated on a polypropylene plate to a film thickness of 5 to 10 μm without pretreatment, dried at room temperature for 5 minutes, then coated with a normal two-component urethane coating and dried at 70 ° C. for 30 minutes. After that, the coating film performance was tested by leaving it for 3 days. The results are shown in Table 2.
【００２３】（比較実施例１〜３）塩素含有率２５重量
％の塩素化ポリプロピレンのトルエン溶液（塩素化ポリ
プロピレン含有率２０％）１００部にソルビトール系エ
ポキシ樹脂（エポキシ当量、平均分子量、官能基は表２
に示す通り、水溶率は５０％以上）またはグリコールエ
ーテル系エポキシ樹脂（エポキシ当量、平均分子量、官
能基は表２に示す通り、水溶率は５０％以上）を混合し
て得られた下塗り塗料組成物を前処理なしで実施例１と
同様にして塗布し、その塗膜性能を試験した。その結果
を表２に示す。(Comparative Examples 1 to 3) 100 parts of a toluene solution of chlorinated polypropylene having a chlorine content of 25% by weight (chlorinated polypropylene content of 20%) was added to sorbitol-based epoxy resin (epoxy equivalent, average molecular weight, functional group Table 2
The water-soluble ratio is 50% or more) or a glycol ether epoxy resin (epoxy equivalent, average molecular weight, functional group is water-soluble 50% or more as shown in Table 2). The article was applied as in Example 1 without pretreatment and its coating performance was tested. The results are shown in Table 2.
【００２４】[0024]
【表２】 [Table 2]
【００２５】以上の実施例５〜８と比較実施例１〜３と
の結果を見ると、エポキシ樹脂はいずれもエポキシ当量
５０〜６００の範囲にあって、塩素化ポリオレフィン系
樹脂に対する配合量も所定の範囲であるから、本発明が
求める付着性能および剥離強度を有するが、実施例５〜
８ではエポキシ樹脂の水溶率が５０％以下であるのに対
し、比較実施例１〜３の場合はエポキシ樹脂の水溶率が
５０％以上であって、エポキシ樹脂の水溶率が上塗り塗
料の耐水変色性に影響を与えているのがわかる。Looking at the results of Examples 5 to 8 and Comparative Examples 1 to 3, the epoxy resins were all in the epoxy equivalent range of 50 to 600, and the compounding amount with respect to the chlorinated polyolefin resin was also predetermined. It has the adhesion performance and the peel strength required by the present invention because it is in the range of
In Example 8, the water solubility of the epoxy resin is 50% or less, while in Comparative Examples 1 to 3, the water solubility of the epoxy resin is 50% or more, and the water solubility of the epoxy resin is the water resistant discoloration of the topcoat paint. You can see that it affects sex.
Claims (3)
リオレフィン系樹脂１００重量部とエポキシ当量５０〜
６００のエポキシ樹脂１〜７０重量部とを主成分として
含有するポリオレフィン系樹脂用下塗り塗料組成物。1. 100 parts by weight of a chlorinated polyolefin resin having a chlorine content of 15 to 35% by weight and an epoxy equivalent of 50 to 50% by weight.
An undercoat coating composition for a polyolefin-based resin, which contains 600 to 1 part by weight of an epoxy resin as a main component.
た請求項１記載の下塗り塗料組成物。2. The undercoat coating composition according to claim 1, wherein 0.1 to 15% by weight of a tertiary amine is added.
である請求項１記載の下塗り塗料組成物。3. The undercoat coating composition according to claim 1, wherein the water solubility of the epoxy resin is 50% or less.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4026593A JP2758764B2 (en) | 1991-02-14 | 1992-02-13 | Undercoat paint composition |
| CA002075359A CA2075359A1 (en) | 1992-02-13 | 1992-08-05 | Under-coating composition |
| GB9216581A GB2264117B (en) | 1992-02-13 | 1992-08-05 | Under-coating composition |
| DE4226968A DE4226968A1 (en) | 1992-02-13 | 1992-08-14 | UNDERLAY COMPOSITION |
| US08/290,513 US5514735A (en) | 1992-02-13 | 1994-08-15 | Under-coating compositions of chlorinated polyolefins and epoxy resins |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3-20958 | 1991-02-14 | ||
| JP2095891 | 1991-02-14 | ||
| JP4026593A JP2758764B2 (en) | 1991-02-14 | 1992-02-13 | Undercoat paint composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05117549A true JPH05117549A (en) | 1993-05-14 |
| JP2758764B2 JP2758764B2 (en) | 1998-05-28 |
Family
ID=26357957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4026593A Expired - Fee Related JP2758764B2 (en) | 1991-02-14 | 1992-02-13 | Undercoat paint composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2758764B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718104A (en) * | 1993-06-30 | 1995-01-20 | Mitsubishi Chem Corp | Method for coating molded article of olefinic resin |
| US5480939A (en) * | 1994-09-02 | 1996-01-02 | Bee Chemical Company | Primer for polyolefin containing chlorinated polyolefin and rubberized epoxy |
| KR100328378B1 (en) * | 1997-12-22 | 2002-11-30 | 니혼세이시가부시키가이샤 | Highly stable chlorinated polyolefin composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6350381A (en) * | 1986-08-18 | 1988-03-03 | 昭和電工株式会社 | Carbonaceous abrasive material |
| JPH02219868A (en) * | 1989-02-21 | 1990-09-03 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of aqueous resin dispersion for sealer |
-
1992
- 1992-02-13 JP JP4026593A patent/JP2758764B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6350381A (en) * | 1986-08-18 | 1988-03-03 | 昭和電工株式会社 | Carbonaceous abrasive material |
| JPH02219868A (en) * | 1989-02-21 | 1990-09-03 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of aqueous resin dispersion for sealer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718104A (en) * | 1993-06-30 | 1995-01-20 | Mitsubishi Chem Corp | Method for coating molded article of olefinic resin |
| US5480939A (en) * | 1994-09-02 | 1996-01-02 | Bee Chemical Company | Primer for polyolefin containing chlorinated polyolefin and rubberized epoxy |
| KR100328378B1 (en) * | 1997-12-22 | 2002-11-30 | 니혼세이시가부시키가이샤 | Highly stable chlorinated polyolefin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2758764B2 (en) | 1998-05-28 |
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