JPS62143978A - Chipping-resistant primer coating material - Google Patents
Chipping-resistant primer coating materialInfo
- Publication number
- JPS62143978A JPS62143978A JP28278185A JP28278185A JPS62143978A JP S62143978 A JPS62143978 A JP S62143978A JP 28278185 A JP28278185 A JP 28278185A JP 28278185 A JP28278185 A JP 28278185A JP S62143978 A JPS62143978 A JP S62143978A
- Authority
- JP
- Japan
- Prior art keywords
- chipping
- resin
- coating material
- resistant primer
- coating
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title abstract description 5
- 239000002987 primer (paints) Substances 0.000 title description 18
- 239000000049 pigment Substances 0.000 claims abstract description 20
- 229920001225 polyester resin Polymers 0.000 claims abstract description 13
- 239000004645 polyester resin Substances 0.000 claims abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 6
- 239000003112 inhibitor Substances 0.000 claims abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 5
- 239000004640 Melamine resin Substances 0.000 claims abstract description 5
- 239000003973 paint Substances 0.000 claims description 20
- 238000010422 painting Methods 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 37
- 239000011248 coating agent Substances 0.000 abstract description 34
- 229920005989 resin Polymers 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 10
- 230000002028 premature Effects 0.000 abstract 2
- 238000004904 shortening Methods 0.000 abstract 1
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 244000028419 Styrax benzoin Species 0.000 description 3
- 235000000126 Styrax benzoin Nutrition 0.000 description 3
- 235000008411 Sumatra benzointree Nutrition 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 229960002130 benzoin Drugs 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 235000019382 gum benzoic Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 2
- 239000012965 benzophenone Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 methylol groups Chemical group 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 210000004417 patella Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、自動車のポデー外板の塗膜に生じる衝撃′Ａ
離現象、すなわち、いわゆるチッピングを防止する塗料
に関するものである。したがって本光り１は、塗料を製
造する産業と、自動車をＴＡ造する産業において利用さ
れるものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to the impact 'A
This invention relates to a paint that prevents peeling phenomenon, that is, so-called chipping. Therefore, this light 1 is used in the paint manufacturing industry and the TA manufacturing industry of automobiles.
従来の技術
自動車産業の分野では、自動車のポデー外板を保護する
一方法として耐チッピング性塗装を施している。これが
実行される理由は、車両が進行することによって跳ね上
げる路上の砂利や小石等がポデー外板の塗膜面に衝突し
、その衝撃によって塗膜が局部的に車体から全部２１離
する衝撃剥離現象、すなわち、いわゆるチッピングを防
止することを目的とするからである０通常、叶動車の塗
装系は化成処理、１看プライマー、中塗り塗装及び七塗
り塗装の各工程から構成されており、耐チッピング性は
中塗り塗膜によって確保されている。BACKGROUND OF THE INVENTION In the automotive industry, one way to protect the exterior skin of a vehicle is to apply chip-resistant paints. The reason this is done is that as the vehicle moves, gravel and pebbles on the road that are thrown up collide with the paint surface of the PODÉ outer panel, and the impact causes the paint film to separate locally from the car body. This is because the purpose is to prevent the so-called chipping phenomenon.Normally, the coating system of a car is made up of the following steps: chemical conversion treatment, first coat primer, intermediate coat, and seven coats. Chipping resistance is ensured by the intermediate coating film.
その例としては、特公昭５２−４３８５７ ′？ｆ公報
を挙げることができる。An example of this is the Special Publication No. 52-43857'? Publication No. f can be mentioned.
このように中塗りで耐チッピング性塗装を実施する理由
の一つとして、上記特公昭５２−４３８５７号公報には
次ぎのように述べられている。One of the reasons why chipping-resistant coating is carried out as an intermediate coating is stated in the above-mentioned Japanese Patent Publication No. 52-43857 as follows.
「周知のように、自動車塗膜は、一般に、前処理（化成
処理）被膜、下塗塗膜（主刃ブライマー塗膜）、中塗塗
膜及び上塗塗膜からなる積層塗膜である。この塗膜の表
面に局所的な衝慇が加わった場合、塗膜はチッピングを
生じ、生じた傷はト塗膜、中塗膜、電着膜を通って素地
金属にまで達する。このような結果になった場合、素地
金属が腐食老朽化し１品質が低下するばかりでなく、外
観については品質面、光沢等が低下し、上塗特有の美観
も失われる。そして、必然的に、煩雑であり、経費のか
かる補修塗りが必要になってくる。“As is well known, automotive paint films are generally multilayer paint films consisting of a pretreatment (chemical conversion treatment) film, an undercoat film (main blade brimer film), an intermediate coat film, and a top coat film. When localized impact is applied to the surface of the coating, the coating film will chip, and the resulting scratches will reach the base metal through the top coating, intermediate coating, and electrodeposited coating. In this case, not only will the base metal become corroded and deteriorated, resulting in a decline in quality, but also the quality and gloss of the appearance will deteriorate, and the beauty unique to topcoating will be lost. Such repair coating becomes necessary.
かかるチッピングを防止するためには、衝撃により発生
するエネルギー、すなわち、衝撃エネルギーを途中の塗
膜に吸収させ、素地金属まで伝達させないようにするこ
とが先−ず考えられる。ところが、上塗塗膜は、美観の
付芋と耐候性等の表面耐久性の達成などを目的としてい
るので、かかる課題には不適当であり、本発明者らは、
中塗塗膜又は電着塗膜、特にこの場合には中塗塗膜、を
改質し、それにより錆が発生しないように塗料塗膜にチ
ッピング防止性を付与することに着目した。」
上述のように、一般に耐チッピング性は中塗り塗料分野
の範囲で改良することが好ましい。In order to prevent such chipping, it is first possible to absorb the energy generated by the impact, that is, the impact energy, in the intermediate coating film, and prevent it from being transmitted to the base metal. However, since the top coat is aimed at achieving a beautiful appearance and surface durability such as weather resistance, it is not suitable for such problems, and the present inventors
The present inventors have focused on modifying the intermediate coating film or the electrodeposited coating film, particularly the intermediate coating film in this case, thereby imparting chipping prevention properties to the paint coating film so that rust does not occur. As mentioned above, it is generally preferable to improve chipping resistance in the field of intermediate coatings.
発明が解決しようとする問題点 耐チッピング性塗料に要求される塗膜物性は。The problem that the invention aims to solve What physical properties are required for chipping-resistant paints?
主にＩＩＩＦＩ衝撃性と耐腐食性である。この内、耐衝
撃性に付いてｎえることは、塗料の設計時点で■エネル
ギーを吸収するためのソフト設計（伸び率保持）、■塗
膜硬度を出すためのハード設計（抗張力保持）をそれぞ
れ考慮しなければならない。ところが、一つの組成物に
角物性を均等保持させることは技術的に矛盾が生じ、か
つ困難を伴うから、一般に耐チッピング性中塗り塗料は
、ソフトチッピングプライマー（第一次中塗り塗料−伸
び率保持）と中塗リシーラ−（第二次中塗り塗料−抗張
力保持）等とに機部を分割している。しかしながらこの
ような従来方式では、必然的に樹脂組成等の相違からく
る問題点が内在する。−例として上述の中塗リシーラー
では吸込み防止を計るため、ソフトチッピングプライマ
ーと同一樹脂であっても分子量を変えたり、あるいは異
質の樹脂を使用するために相溶性をある程度犠牲にして
いる。このようなことが起因して塗装インターバルの確
保（通常は３分〜５分）が必要となったり、組成の相違
によるブリード現象によって中塗りシーラーの外観不良
を起こしたりする。これらのリスクの解決は生産効率と
車体の仕上がり外観の向上を目的の一つとする自動車産
業分野においては極めて重要な課題となっている。Mainly IIIFI impact resistance and corrosion resistance. Of these, the things that need to be considered in terms of impact resistance are: ■Soft design to absorb energy (maintaining elongation rate), and ■Hard design to produce coating film hardness (maintaining tensile strength) at the time of paint design. must be taken into consideration. However, it is technically inconsistent and difficult to maintain uniform square properties in one composition, so chipping-resistant intermediate coatings are generally used with soft chipping primers (primary intermediate coatings - elongation rate). The machine part is divided into an intermediate coating (retention), an intermediate coating (resealer) (secondary intermediate coating - maintaining tensile strength), etc. However, such conventional methods inevitably have inherent problems due to differences in resin composition, etc. - For example, in the above-mentioned intermediate resealer, in order to prevent suction, compatibility is sacrificed to some extent by changing the molecular weight even if it is the same resin as the soft chipping primer, or by using a different resin. Due to this, it is necessary to ensure a coating interval (usually 3 to 5 minutes), and the appearance of the intermediate coat sealer may be poor due to a bleeding phenomenon due to a difference in composition. Solving these risks is an extremely important issue in the automobile industry, where one of the objectives is to improve production efficiency and the finished appearance of vehicle bodies.
問題点を解決するための手段
本発明は、ウェット オン ウェット塗装方式の第一層
として塗装される耐チッピング性プライマー塗料であっ
て、それは熱硬化性ポリエステル樹脂、メラミン樹脂、
初期硬化防止剤、酸化チタン及び体質顔料を含有し、か
つ酸化チタン及び体質顔料の含量が塗料固形分に対して
５５〜７０重量％であることを特徴とするものである。Means for Solving the Problems The present invention is a chipping-resistant primer paint that is applied as the first layer in a wet-on-wet painting system, and which comprises a thermosetting polyester resin, a melamine resin,
It is characterized in that it contains an initial curing inhibitor, titanium oxide and extender pigment, and the content of titanium oxide and extender pigment is 55 to 70% by weight based on the solid content of the paint.
以下、順を追って本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail in order.
（ポリエステル樹脂とメラミン樹脂）
本発明の耐チッピング性プライマーに使用される熱硬化
性ポリエステル樹脂は、飽和二１１！基酸またはそのエ
ステル形成性誘導体と多価アルコールまたはそのエステ
ル形成性誘導体との縮合物を主体とする公知のポリエス
テル樹脂である。これを更に詳しくいえば、数平均分子
量が２，０００〜４．０００、好ましくは２，０００〜
３゜０００であり、水酸基価が固形分換算で２５〜８０
、好ましくは４０〜７０であり、酸価が３〜２０、好ま
しくは４〜１５であることが必要であるが、好ましい範
囲は数平均分子量が２゜ＯＯＯ〜３．０００であり、水
酸基価が固形分換算で４０〜７０であり、酸価が４〜１
５である。(Polyester resin and melamine resin) The thermosetting polyester resin used in the chipping-resistant primer of the present invention is saturated with 211! This is a known polyester resin mainly consisting of a condensate of a base acid or its ester-forming derivative and a polyhydric alcohol or its ester-forming derivative. More specifically, the number average molecular weight is 2,000 to 4,000, preferably 2,000 to 4,000.
3°000, and the hydroxyl value is 25 to 80 in terms of solid content.
, preferably 40 to 70, and the acid value is 3 to 20, preferably 4 to 15, but the preferred range is a number average molecular weight of 2° OOO to 3.000, and a hydroxyl value of 3 to 20, preferably 4 to 15. 40-70 in terms of solid content, acid value 4-1
It is 5.
熱硬化性ポリエステル樹脂の数平均分子量が４．０００
を越えると良好な仕上がり外観が得られず、一方、それ
が２．０００未満では耐水性が低下するので好ましくな
い、また水酸基価が２５未満では、アミ／樹脂等を配合
する際に反応がじゅうぶんに行われなくなり、仕上がり
外観不良、硬度不足および耐水性不足を生じやすくなる
。一方、水酸基価が８０を越えると耐水性が低下するの
で好ましくない。さらに酸価が３未満ではアミン樹脂の
反応がなくなり、硬度不足となる。一方、酸価が２０を
越えると反応性が上がり、オー／ヘーベーク時の塗膜が
脆くなりやすいから好ましくない、 またこのポリエス
テル樹脂の硬化剤として配合されるブチルエーテル化メ
ラミン樹脂の配合割合は、ポリエステル樹脂／アミノ樹
脂の比（固形分重量比）が７５／２５〜９５１５である
が、好ましくは８０／２０〜８５／１５の範囲である。The number average molecular weight of the thermosetting polyester resin is 4.000
If the hydroxyl value exceeds 2.000, it is not possible to obtain a good finished appearance, while if it is less than 2.000, the water resistance decreases, which is undesirable.If the hydroxyl value is less than 25, the reaction will be insufficient when blending amino/resin, etc. This tends to result in poor finished appearance, insufficient hardness, and insufficient water resistance. On the other hand, if the hydroxyl value exceeds 80, water resistance decreases, which is not preferable. Further, if the acid value is less than 3, the amine resin will not react, resulting in insufficient hardness. On the other hand, if the acid value exceeds 20, the reactivity increases and the coating film tends to become brittle during o/h baking, which is undesirable.Also, the proportion of butyl etherified melamine resin blended as a curing agent for this polyester resin is The resin/amino resin ratio (solid content weight ratio) is from 75/25 to 9515, preferably from 80/20 to 85/15.
ポリエステル樹脂が７５重量％未満ではポリエステル樹
脂の水酸基価が相対的に低くなるため、過剰のメチロー
ル基同志の自己縮合反応が進んで塗膜が硬なり、密着性
が悪化すると共にポリエステル樹脂と７ミノ樹脂との相
溶性に問題が生じる場合もある。一方、ポリエステル樹
脂が９５重量％を越えると、塗膜の耐湿性が低下するの
で好ましくない。If the polyester resin is less than 75% by weight, the hydroxyl value of the polyester resin will be relatively low, and the self-condensation reaction of the excess methylol groups will proceed, resulting in a hard coating film, poor adhesion, and poor bonding with the polyester resin. Problems may arise in compatibility with resins. On the other hand, if the polyester resin exceeds 95% by weight, the moisture resistance of the coating film decreases, which is not preferable.
本発明の耐チッピング性プライマーにおけるポリエステ
ル樹脂対アミノ樹脂の配合割合は、中塗リシーラーにも
そのまま適用することができる。The blending ratio of polyester resin to amino resin in the chipping-resistant primer of the present invention can also be applied to the intermediate coat resealer as is.
この結果耐チッピング性プライマーと中塗リシーラーと
の相溶性が増し、ウェット オン ウェット方式におけ
る塗膜の耐チッピング性を向上させることができる。As a result, the compatibility between the chipping-resistant primer and the intermediate resealer is increased, and the chipping resistance of the coating film in the wet-on-wet method can be improved.
（顔 料）
本発明に用いられる顔料は二酸化チタン、タルク、硫酸
バリュウム、カーボンブラック等である。ただし上記の
ビヒクル及び顔料から構成される本発明の耐チッピング
性プライマーの顔料濃度は、塗料固形分の５５〜７０重
量％であることが必要である。顔料濃度が５５重量％未
満であると、得られる塗膜の外部因子によるキズの進行
防止効果が悪くなり、７０重量％を越えると塗料中の顔
料が沈澱しやすくなって貯蔵安定性が劣る。(Pigment) Pigments used in the present invention include titanium dioxide, talc, barium sulfate, carbon black, and the like. However, the pigment concentration of the chipping-resistant primer of the present invention composed of the above-mentioned vehicle and pigment must be 55 to 70% by weight of the solid content of the paint. If the pigment concentration is less than 55% by weight, the effect of preventing the progression of scratches caused by external factors on the resulting coating film will be poor, and if it exceeds 70% by weight, the pigment in the paint will tend to precipitate, resulting in poor storage stability.
本発明の耐チッピング性プライマーとともに使用される
中塗リシーラーの顔料濃度は、通常は、塗料固形分の４
０〜６０重量％である。中塗りシーラーの顔料濃度が４
０重量％未満であると、得られる塗膜の外部因子による
キズの進行防止効果が少なく、６０重量％を越えると中
塗リシーラーの中の顔料が沈澱しやすくなり、貯蔵安定
性が劣り、また上塗りの吸込みが多くなる。なお、耐チ
ッピング性プライマーを顔料リッチ傾向にしてキズの進
行防止効果を得るためには、耐チッピング性プライマー
中の顔料濃度を中塗リシーラーの顔料濃度より５％以上
高くすることが好ましい。この場合、使用される顔料は
耐へキカイ性（すなわち耐ハクリ性）の点を考慮して、
タルク等のヘキカイ性顔料を使用しないでチタンリッチ
とすることが望ましい。The pigment concentration of the intermediate resealer used with the chipping-resistant primer of the present invention is typically 40% of the paint solids content.
It is 0 to 60% by weight. The pigment concentration of the intermediate coat sealer is 4
If it is less than 0% by weight, the effect of preventing the progression of scratches caused by external factors on the resulting coating film will be small; if it exceeds 60% by weight, the pigment in the intermediate coat resealer will tend to precipitate, resulting in poor storage stability and Inhalation increases. In order to make the chipping-resistant primer pigment-rich and to obtain the effect of preventing the progression of scratches, it is preferable that the pigment concentration in the chipping-resistant primer be 5% or more higher than the pigment concentration in the intermediate coating resealer. In this case, the pigment used should be selected in consideration of peel resistance (that is, peel resistance).
It is desirable to make the material rich in titanium without using a dynamic pigment such as talc.
（初期硬化防止剤）
本発明では、耐チッピング性プライマーの初期硬化防止
剤としてベンゾイン、ベンゾフェノン。(Initial curing inhibitor) In the present invention, benzoin and benzophenone are used as the initial curing inhibitor of the chipping-resistant primer.
ベンゾトリアゾール、脂肪族の第１アミン。Benzotriazole, aliphatic primary amine.
第２アミン、第３アミンと芳香族アミン及びその誘導体
等を使用することができる。これらの巾で、塗料の焼付
条件下で沸脂および、分解しない物質であって、コスト
の点から最も適当であるベンゾインを添加剤として用い
ることが良好である。ベンゾインを添加することによっ
て、耐チッピング性プライマー塗膜のソフト化（すなわ
ちエネルギー吸収作用の増大）を計ることができる。Secondary amines, tertiary amines, aromatic amines, derivatives thereof, etc. can be used. In these ranges, it is preferable to use benzoin as an additive, which is a substance that does not decompose under the baking conditions of the paint and is most suitable from the point of view of cost. By adding benzoin, it is possible to soften the chipping-resistant primer coating (ie increase its energy absorption effect).
なお１本発明の耐チッピング性プライマーとともに使用
される中塗リシーラーにはベンツイン、ベンゾフェノン
等の添加剤は使用しないで、中塗りシーラー塗膜をハー
ド化する（抗張力を保持する）設計としたすることが好
ましい、上記の設計により相溶性に優れ、かつ仕上がり
塗膜外観が良好で、さらには物性の機能分担を備えた耐
チッピング性プライマーが完成された。Note that the intermediate coat resealer used with the chipping-resistant primer of the present invention may be designed to harden (maintain tensile strength) the intermediate coat sealer film without using additives such as benzine or benzophenone. With the above-mentioned design, a chipping-resistant primer has been completed which has excellent compatibility, has a good finished coating appearance, and also has physical property functions.
実 施 例
以下に実施例を記載して本発明の詳細な説明するが、下
記の実施例は本発明を制限するものではない。EXAMPLES The present invention will be explained in detail with reference to Examples below, but the following Examples are not intended to limit the present invention.
第１表 耐チッピング性プライマー （配合割合−重丑部） （注） 本１ 堺小名浜化学社の製品の商品名。Table 1: Chipping-resistant primer (Blending ratio - Juushibe) (note) Book 1: Trade name of the product of Sakai Onahama Chemical Co., Ltd.
＊２ イソフタル酸６５重量部、アジピン醸３５重量部
、トリメチロールプロパン２０ｆｉ量部およびネオペン
チルグリコール３０重量部を使用して、通常の方法によ
って合成された樹脂を用いた。*2 A resin synthesized by a conventional method using 65 parts by weight of isophthalic acid, 35 parts by weight of adipine, 20 parts by weight of trimethylolpropane, and 30 parts by weight of neopentyl glycol was used.
＊３ 三井東圧社製の［ニーパン２０３Ｅ−６０Ｊ樹脂
を用いた。*3 Kneepan 203E-60J resin manufactured by Mitsui Toatsu Co., Ltd. was used.
本４ キシレン：酢酸エチル：ｎ−ブタノール＝ｌ：１
：１の混合溶剤である。Book 4 xylene: ethyl acetate: n-butanol = l:1
:1 mixed solvent.
第２表 中塗リシーラー
（配合割合＝１ｒＸ量部）
第３表 塗料の組合せ
第４表 評価結果（そのｌ）
第４表 評価結果（その２）
第４表においてＯは良好、Ｏは良、Ｘは不良をそれぞれ
示す。Table 2 Intermediate resealer (blending ratio = 1rX parts) Table 3 Paint combinations Table 4 Evaluation results (Part 1) Table 4 Evaluation results (Part 2) In Table 4, O means good, O means good, and X indicates a defect.
木５ 鉛筆引掻き試験 ＪＩＳ−に５４０１木６ チッ
ピング性 Ｑパネルの塗板に塗付した電着塗膜の上に耐
チッピング性プライマーと中塗リシーラーを２コート１
ベークで塗装した（焼付時間１４０℃Ｘ３０分）、この
塗膜を一２０℃にてグラベロメーターで角度４５°、７
号砕石５０ｇ、エアー圧力４ｋｇにおける１０１０Ｘ１
５当りのハクリ個数を第４表に示した。またこの欄の（
）内はツルトスプレー試験で７２時間後に発生したすビ
の個所数である。Wood 5 Pencil scratch test JIS-5401 Wood 6 Chipping resistance 2 coats of chipping-resistant primer and intermediate resealer on the electrodeposited film applied to the painted board of the Q panel 1
Painted by baking (baking time 140°C x 30 minutes), this coating was heated at -20°C with a gravelometer at an angle of 45°, 7
1010X1 at 50g crushed stone and 4kg air pressure
The number of peelers per 5 pieces is shown in Table 4. Also in this column (
The numbers in parentheses are the number of spots that appeared after 72 hours in the Tsuruto spray test.
発明の効果
本発明により自動車外板塗装における工程の短縮が可能
となり、かつ中塗り塗膜の仕上がり外観も良好でチッピ
ング対策が計れることによって、錆の防止と外観の向上
をはかることができる。Effects of the Invention The present invention makes it possible to shorten the process for painting exterior panels of automobiles, and also provides a good finished appearance of the intermediate coating film and prevents chipping, thereby making it possible to prevent rust and improve the appearance.
Claims (1)
、熱硬化性ポリエステル樹脂、メラミン樹脂、初期硬化
防止剤、酸化チタン及び体質顔料を含有し、かつ酸化チ
タン及び体質顔料の含量が塗料固形分中５５〜７０重量
％であることを特徴とする耐チッピング性プライマー塗
料。[Scope of Claims] A chipping-resistant primer paint that is applied as the first layer in a wet-on-wet painting system, which contains a thermosetting polyester resin, a melamine resin, an initial hardening inhibitor, titanium oxide, and an extender pigment, and A chipping-resistant primer paint characterized in that the content of titanium oxide and extender pigment is 55 to 70% by weight based on the solid content of the paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28278185A JPS62143978A (en) | 1985-12-18 | 1985-12-18 | Chipping-resistant primer coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28278185A JPS62143978A (en) | 1985-12-18 | 1985-12-18 | Chipping-resistant primer coating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62143978A true JPS62143978A (en) | 1987-06-27 |
Family
ID=17656993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28278185A Pending JPS62143978A (en) | 1985-12-18 | 1985-12-18 | Chipping-resistant primer coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62143978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005037941A3 (en) * | 2003-10-17 | 2005-12-29 | Du Pont | Improved chip resistant primer composition useful for producing two-tone finishes |
| WO2007125099A1 (en) * | 2006-04-27 | 2007-11-08 | Sachtleben Chemie Gmbh | Uv-curable undercoat |
-
1985
- 1985-12-18 JP JP28278185A patent/JPS62143978A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005037941A3 (en) * | 2003-10-17 | 2005-12-29 | Du Pont | Improved chip resistant primer composition useful for producing two-tone finishes |
| WO2007125099A1 (en) * | 2006-04-27 | 2007-11-08 | Sachtleben Chemie Gmbh | Uv-curable undercoat |
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