JPH05239407A - Coating composition for plastic - Google Patents
Coating composition for plasticInfo
- Publication number
- JPH05239407A JPH05239407A JP4363492A JP4363492A JPH05239407A JP H05239407 A JPH05239407 A JP H05239407A JP 4363492 A JP4363492 A JP 4363492A JP 4363492 A JP4363492 A JP 4363492A JP H05239407 A JPH05239407 A JP H05239407A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- component
- coating
- coating film
- 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.)
- Pending
Links
- 239000008199 coating composition Substances 0.000 title abstract description 17
- 229920003023 plastic Polymers 0.000 title abstract description 13
- 239000004033 plastic Substances 0.000 title abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 24
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 24
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 239000004645 polyester resin Substances 0.000 claims abstract description 19
- 229920001225 polyester resin Polymers 0.000 claims abstract description 18
- 238000004132 cross linking Methods 0.000 claims abstract description 3
- 239000006223 plastic coating Substances 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 48
- 238000000576 coating method Methods 0.000 abstract description 48
- 238000002156 mixing Methods 0.000 abstract description 10
- 238000001035 drying Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000003973 paint Substances 0.000 description 15
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 10
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 10
- 239000005058 Isophorone diisocyanate Substances 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 239000005056 polyisocyanate Substances 0.000 description 4
- 229920001228 polyisocyanate Polymers 0.000 description 4
- 239000011342 resin composition Substances 0.000 description 4
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZMWRRFHBXARRRT-UHFFFAOYSA-N 2-(benzotriazol-2-yl)-4,6-bis(2-methylbutan-2-yl)phenol Chemical compound CCC(C)(C)C1=CC(C(C)(C)CC)=CC(N2N=C3C=CC=CC3=N2)=C1O ZMWRRFHBXARRRT-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920001207 Noryl Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- UJRDRFZCRQNLJM-UHFFFAOYSA-N methyl 3-[3-(benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl]propanoate Chemical compound CC(C)(C)C1=CC(CCC(=O)OC)=CC(N2N=C3C=CC=CC3=N2)=C1O UJRDRFZCRQNLJM-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチック表面に被
覆され美観や表面特性を向上させる２液型のプラスチッ
ク用塗料組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-component plastic coating composition which is coated on the surface of a plastic to improve the appearance and surface characteristics.
【０００２】[0002]
【従来の技術】従来、プラスチック用塗料組成物は、水
酸基を有するアクリル樹脂を主成分とする主剤と、前記
の水酸基と反応して架橋するポリイソシアネート系の化
合物を主成分とする硬化剤とからなる２液型として構成
されている。そして、使用前に主剤と硬化剤とが混合さ
れて塗布される。2. Description of the Related Art Conventionally, a coating composition for plastics is composed of a main agent containing an acrylic resin having a hydroxyl group as a main component and a curing agent containing a polyisocyanate-based compound which reacts with the hydroxyl group to crosslink. It is configured as a two-component type. Then, the main agent and the curing agent are mixed and applied before use.
【０００３】たとえば、特開昭６１−２８１１３３号公
報には、ＡＢＳ樹脂、ポリカーボネート樹脂などのプラ
スチックに塗布され成形品に耐摩耗性、耐損傷性の塗膜
を形成する表面被覆組成物として、ガラス転移温度が３
０℃以上で水酸基価が２０〜１２０のアクリル樹脂およ
びα−アルミナを含む主剤と、アミノ樹脂またはポリイ
ソシアネート化合物の硬化剤とからなるプラスチック用
塗料組成物の開示がある。また、特開昭５８−３２６６
２号公報には、塗膜の低温での可撓性を向上させたプラ
スチック表面の塗装用組成物として、アクリル樹脂の固
形分１００重量部に対して分子量３００〜４０００で水
酸基価が２６〜５５０のポリカプロラクトンが１０〜１
００重量部配合された主剤と、イソシアネート系の硬化
剤とからなる２液型の塗料組成物の開示がある。For example, JP-A-61-281133 discloses a glass as a surface coating composition which is applied to a plastic such as ABS resin or polycarbonate resin to form a coating film having abrasion resistance and damage resistance on a molded article. Transition temperature is 3
There is a disclosure of a plastic coating composition comprising a base resin containing an acrylic resin having a hydroxyl value of 20 to 120 at 0 ° C. or higher and α-alumina, and a curing agent for an amino resin or a polyisocyanate compound. Also, JP-A-58-3266
No. 2 discloses a composition for coating a plastic surface in which flexibility of a coating film at low temperature is improved, and has a molecular weight of 300 to 4000 and a hydroxyl value of 26 to 550 relative to 100 parts by weight of a solid content of an acrylic resin. Polycaprolactone of 10-1
There is a disclosure of a two-pack type coating composition consisting of a main agent blended in an amount of 00 parts by weight and an isocyanate-based curing agent.
【０００４】これらの２液型の塗料組成物では、塗装前
に主剤に硬化剤を混合して使用されるため塗料のポット
ライフの長さが塗装作業性に重要な影響を与える。ポッ
トライフが短いと短時間で塗料がゲル化するので、ポッ
トライフ内に使いきるために少量づつ配合する必要があ
る。一方、ポットライフが長いと塗膜の硬化反応速度が
遅く乾燥時間が多大となる。また、加熱乾燥直後の温か
い状態では、表面に粘着性が残存する場合があり、不粘
着性となるまでの放置時間が必要となり生産性の低下や
保管場所が必要となる。したがって、２液型の塗料組成
物としては、ポットライフと乾燥性および不粘着性につ
いて適度にバランスさせることが必要である。しかし、
従来のプラスチック用塗料組成物ではそのような配慮が
なされた組成物の開示は見当たらない。In these two-pack type coating compositions, the pot life of the coating has an important influence on the coating workability because it is used by mixing a base material with a curing agent before coating. If the pot life is short, the paint will gel in a short time, so it is necessary to mix it in small amounts in order to use it up in the pot life. On the other hand, when the pot life is long, the curing reaction rate of the coating film is slow and the drying time becomes long. Further, in a warm state immediately after heat-drying, adhesiveness may remain on the surface, which requires a standing time until it becomes non-adhesive, lowering productivity and requiring storage space. Therefore, as a two-pack type coating composition, it is necessary to appropriately balance the pot life with the drying property and the tack-free property. But,
No disclosure of compositions with such consideration is found in conventional plastic coating compositions.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記の事情に
鑑みてなされたもので、適度のポットライフをもち、か
つ乾燥焼付けされた直後の塗膜表面の不粘着性に優れた
プラスチック用塗料組成物とすることを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a suitable pot life and is a paint for plastics having excellent tack-freeness on the surface of a coating film immediately after being dried and baked. It is intended to be a composition.
【０００６】[0006]
【課題を解決するための手段】本発明のプラスチック用
塗料組成物は、樹脂成分を主成分として含む主剤と、該
主剤に配合されて該樹脂成分と架橋硬化する架橋成分を
含む硬化剤とからなる２液型のプラスチック用塗料組成
物において、該樹脂成分は、アクリル系樹脂とポリエス
テル樹脂との混合物からなりその配合比率がアクリル系
樹脂：ポリエステル樹脂＝９５：５〜５０：５０の範囲
であることを特徴とする。The plastic coating composition of the present invention comprises a main component containing a resin component as a main component, and a curing agent containing a crosslinking component which is blended with the main component to crosslink and cure with the resin component. In the two-pack type coating composition for plastics, the resin component is a mixture of an acrylic resin and a polyester resin, and the mixing ratio is acrylic resin: polyester resin = 95: 5 to 50:50. It is characterized by
【０００７】本発明のプラスチック用塗料組成物は、主
剤と硬化剤とを主構成成分とする。主剤は塗膜を形成す
る樹脂成分と、その他触媒、レベリング剤、紫外線吸収
剤、顔料などが配合される。樹脂成分は、アクリル樹脂
とポリエステル樹脂とが特定の比率で混合されて使用さ
れる。この混合により塗膜の物性を保持すると共に混合
された塗料のポットライフを長くすることができる。ア
クリル樹脂は塗膜の硬化性に寄与して塗膜が粘着するの
を抑制し、ポリエステル樹脂は塗膜の柔軟性、可撓性に
寄与する。The plastic coating composition of the present invention comprises a main component and a curing agent as main constituent components. The main component contains a resin component for forming a coating film, and other components such as a catalyst, a leveling agent, an ultraviolet absorber and a pigment. As the resin component, an acrylic resin and a polyester resin are mixed and used at a specific ratio. By this mixing, the physical properties of the coating film can be maintained and the pot life of the mixed coating material can be lengthened. The acrylic resin contributes to the curability of the coating film and suppresses adhesion of the coating film, and the polyester resin contributes to the flexibility and flexibility of the coating film.
【０００８】主剤中のアクリル樹脂の量は、アクリル樹
脂とポリエステル樹脂の合計量を１００としたとき９５
〜５０重量％配合される。アクリル樹脂が９５重量％を
超えると塗装皮膜の可撓性が不十分となり好ましくな
い。また配合量が５０重量％未満であると塗膜の硬化性
が不十分で焼付け後の塗膜が粘着性を示し取扱いにくい
ので好ましくない。The amount of acrylic resin in the base resin is 95, when the total amount of acrylic resin and polyester resin is 100.
˜50% by weight. When the acrylic resin exceeds 95% by weight, the flexibility of the coating film is insufficient, which is not preferable. On the other hand, if the blending amount is less than 50% by weight, the curability of the coating film is insufficient and the coating film after baking shows tackiness and is difficult to handle, which is not preferable.
【０００９】アクリル樹脂としては、通常２液型のアク
リルウレタン樹脂系の塗料用樹脂として使用されるアク
リル樹脂であればいずれも使用可能である。たとえば、
水酸基含有のアクリルモノマー、アクリル酸エステルモ
ノマー、メタクリル酸エステルモノマー、その他共重合
性のビニルモノマーとの共重合により得られるもので、
具体的には住友バイエルウレタン株式会社製の商品名デ
スモフェンＡ２６５、デスモフェンＡ２６０、デスモフ
ェンＡ５６５、デスモフェンＡ３６５、大日本インキ工
業株式会社製の商品名アクリディックＡ８１７、アクリ
ディックＡ８０１、アクリディックＡＵ９５５、アクリ
ディックＡＵ１０４２などが利用できる。As the acrylic resin, any acrylic resin which is usually used as a two-component acrylic urethane resin-based coating resin can be used. For example,
It is obtained by copolymerization with hydroxyl group-containing acrylic monomer, acrylic acid ester monomer, methacrylic acid ester monomer, and other copolymerizable vinyl monomer,
Specifically, the product names Desmophen A265, Desmophen A260, Desmophen A565, Desmophen A365, manufactured by Sumitomo Bayer Urethane Co., Ltd. Etc. can be used.
【００１０】ポリエステル樹脂としては、通常２液型の
アクリルウレタン樹脂系の塗料用樹脂として使用される
飽和の脂肪族系のポリエステル樹脂の中で柔軟性タイプ
のものを使用するのが好ましく、具体的には住友バイエ
ルウレタン社製の商品名デスモフェン６７０、大日本イ
ンキ工業株式会社製の商品名バーノックＤ１６１、バー
ノック１６００などが利用できる。As the polyester resin, it is preferable to use a flexible type among saturated aliphatic polyester resins which are usually used as a two-component acrylic urethane resin-based coating resin. For example, Desmophen 670 manufactured by Sumitomo Bayer Urethane Co., Ltd., Barnock D161 and Barnock 1600 manufactured by Dainippon Ink and Chemicals, Inc. can be used.
【００１１】主剤には樹脂固形分の他にレベリング剤、
触媒、紫外線吸収剤などを配合して塗装性の向上や塗膜
の物性を向上させる添加剤を配合することができる。レ
ベリング剤は塗料の塗装性を向上させるもので（シリコ
ン系、非シリコン系のものなど）、具体的には商品名Ｅ
ＦＫＡ−８８（ＥＦＫＡ社製）、ホイシャースＶＬ７３
５（バイエル社製）、ＢＹＫ−ＯＫ、ＢＹＫ−３００、
ＢＹＫ−３２０（ビックケミー社製）などが挙げられ
る。触媒は硬化剤と主剤の樹脂成分との硬化反応を促進
するもので、具体的にはジブチルスズジラウレート、シ
ングオクトエートなどが利用できる。紫外線吸収剤は、
塗膜の耐候性を高めるもので、通常塗料用として使用さ
れる紫外線吸収剤が使用でき、具体的にはチバガイギー
株式会社製のチヌビン９００、チヌビン１１３０、チヌ
ビン３２８などが利用できる。The main component is a leveling agent in addition to the resin solid content,
Additives that improve the coatability and the physical properties of the coating film by blending a catalyst, an ultraviolet absorber and the like can be blended. The leveling agent improves the paintability of the paint (silicon-based, non-silicon-based, etc.), and is specifically trade name E
FKA-88 (manufactured by EFKA), Hoischer VL73
5 (manufactured by Bayer), BYK-OK, BYK-300,
BYK-320 (manufactured by BYK Chemie) and the like can be mentioned. The catalyst accelerates the curing reaction between the curing agent and the resin component of the main component, and specifically, dibutyltin dilaurate, singooctate, etc. can be used. UV absorbers
An ultraviolet absorber that is usually used for paints can be used to enhance the weather resistance of the coating film, and specifically, TINUVIN 900, TINUVIN 1130, TINUVIN 328 manufactured by Ciba-Geigy Co., Ltd. can be used.
【００１２】硬化剤としては、通常２液型ポリウレタン
樹脂塗料に用いられるポリイソシアネート化合物が使用
され、たとえば、ヘキサメチレンジイソシアネート（Ｈ
ＤＩ）、イソホロンジイソシアネート（ＩＰＤＩ）を併
用して用いるのが好ましい。ＨＤＩとしては住友バイエ
ルウレタン社製の商品名スミジュールＮ、スミジュール
Ｎ７５、スミジュールＮ３２００、スミジュールＮ３５
００、スミジュールＨＴ、スミジュールＮ３５００−９
０Ｅ、日本ポリウレタン株式会社製の商品名コロネート
ＨＬ、大日本インキ工業株式会社製の商品名バーノック
ＤＮ９５０、バーノックＤＮ９５５などが利用できる。
これらは耐候性の面から非黄変型のポリイソシアネート
に相当するものである。As the curing agent, a polyisocyanate compound which is usually used in a two-pack type polyurethane resin paint is used. For example, hexamethylene diisocyanate (H
DI) and isophorone diisocyanate (IPDI) are preferably used in combination. As HDI, Sumitomo Bayer Urethane Co., Ltd. product name Sumidur N, Sumidur N75, Sumidur N3200, Sumidur N35
00, Sumidur HT, Sumidur N3500-9
0E, Nippon Polyurethane Co., Ltd., trade name Coronate HL, Dainippon Ink and Chemicals Co., Ltd., trade names Burnock DN950, Burnock DN955, etc. can be used.
These are equivalent to non-yellowing polyisocyanates from the viewpoint of weather resistance.
【００１３】ＩＰＤＩとしては、通常２液型ポリウレタ
ン樹脂塗料に用いられるもので、具体的には三菱化成株
式会社製の商品名マイテックＮＹ２１５Ａ、住友バイエ
ルウレタン社製の商品名デスモジュールＺ４３７０、ダ
イセルヒュルス株式会社製ＩＰＤＩ−Ｔ１８９０などが
使用できる。なお、硬化性の面からＴｇ（ガラス転移温
度）が４０℃以上で１００℃未満のものの使用が好まし
い。[0013] IPDI is usually used for two-component polyurethane resin paints, and specifically, the product name Mitec NY215A manufactured by Mitsubishi Kasei Co., Ltd., the product name Desmodule Z4370 manufactured by Sumitomo Bayer Urethane Co., Ltd., and Daicel Hull. IPDI-T1890 manufactured by SU Co., Ltd. can be used. From the viewpoint of curability, it is preferable to use one having a Tg (glass transition temperature) of 40 ° C. or higher and lower than 100 ° C.
【００１４】ＨＤＩとＩＰＤＩとの配合比率はＨＤＩ：
ＩＰＤＩ＝３０：７０〜７０：３０の範囲とすることに
より、さらにポットライフの長さと不粘着性の両特性を
同時に満足できるようにすることができる。この硬化剤
量は、主剤を構成する樹脂分中に含まれる水酸基の量と
当量のイソシアネート基が配合されるようにすることが
好ましい。The mixing ratio of HDI and IPDI is HDI:
By setting the range of IPDI = 30: 70 to 70:30, it is possible to further satisfy both the characteristics of the pot life and the tack-free property at the same time. The amount of this curing agent is preferably such that the amount of hydroxyl groups contained in the resin component constituting the main agent is equivalent to the amount of isocyanate groups.
【００１５】このプラスチック表面塗装用の組成物は、
アクリルウレタン樹脂系塗料であって、従来のアクリル
ウレタン樹脂系塗料のポットライフが長いと硬化性が悪
く、逆に硬化性が良いとポットライフが短いという不具
合を克服して、塗装作業に最適の範囲にポットライフと
硬化性を調整することのできる塗料である。この塗料組
成物は、直接または溶媒で希釈して通常の方法で容易に
塗装することができる。The composition for coating the surface of the plastic is
It is an acrylic urethane resin-based paint, and it is ideal for painting work by overcoming the problem that conventional acrylic urethane resin-based paints have poor potability when they have a long pot life, and conversely, when they have good curability, they have a short pot life. It is a paint whose pot life and curability can be adjusted within the range. This coating composition can be easily coated directly or by diluting it with a solvent by a usual method.
【００１６】この塗料組成物は、ポリプロピレン樹脂、
ウレタン樹脂、ＡＢＳ樹脂、ポリカーボネート樹脂、ノ
リル樹脂、ナイロン樹脂などの成形品の塗装に利用でき
る。この塗膜が表面に形成されたプラスチック成形品
は、焼付け後に粘着性がなく成形品の重ね合わせが可能
で、かつ塗膜の密着性が優れ、耐薬品性、外観等が向上
できる。This coating composition comprises a polypropylene resin,
It can be used for coating molded products such as urethane resin, ABS resin, polycarbonate resin, Noryl resin, nylon resin. The plastic molded article having the coating film formed on the surface thereof has no tackiness after baking and allows the molded articles to be overlaid with each other, and the coating film has excellent adhesiveness, and chemical resistance, appearance and the like can be improved.
【００１７】[0017]
【作用】このプラスチック用塗料組成物は、主剤中の樹
脂成分がアクリル樹脂とポリエステル樹脂とを特定の範
囲の配合比率としている。このため硬化剤が配合された
後の塗料は、ポットライフを従来のアクリルウレタン系
の２液型塗料に比べて長くすることができる。その結
果、この塗料を用いる塗装は作業性を向上させることが
できる。そして塗膜の焼付け直後においても塗膜が適度
に硬化し粘着性を示さないので、塗装品同士の重ね合わ
せなどが可能となり取扱が容易となる。そのため塗膜が
硬化するまでの保管場所を必要とせず生産性の向上を図
ることができる。In this coating composition for plastics, the resin component in the main component has an acrylic resin and a polyester resin in a specific ratio. For this reason, the paint after the curing agent is added can have a longer pot life than the conventional acrylic urethane two-pack paint. As a result, workability can be improved in painting using this paint. Further, even immediately after baking of the coating film, the coating film is appropriately cured and does not exhibit tackiness, so that the coated products can be overlapped with each other and the handling becomes easy. Therefore, it is possible to improve productivity without requiring a storage place until the coating film is cured.
【００１８】[0018]
【実施例】以下、実施例により具体的に説明する。 （実施例） 「Ｎｏ．１」 ポリエステル樹脂（商品名デスモフェン
６７０）２０重量部と、アクリル樹脂（デスモフェンＡ
３６５）８０重量部にレベリング剤（ＥＦＫＡ−８８）
１．０％、触媒（ジブチルスズジラウレート）１．０
％、紫外線吸収剤（商品名チヌビン９００）１．０％を
混合して主剤を作製した。EXAMPLES The present invention will be specifically described below with reference to examples. (Example) "No. 1" 20 parts by weight of a polyester resin (trade name Desmophen 670) and an acrylic resin (Desmophen A)
365) 80 parts by weight of a leveling agent (EFKA-88)
1.0%, catalyst (dibutyltin dilaurate) 1.0
%, And an ultraviolet absorber (trade name: Tinuvin 900) 1.0% were mixed to prepare a main agent.
【００１９】硬化剤はＨＤＩ：ＩＰＤＩ＝５０：５０の
比率で混合して作製し、主剤の樹脂の水酸基に対応する
当量のイソシアネート基が配合される量を、主剤に添加
して塗料組成物とした。この塗料組成物は溶剤を加えて
塗料としエアスプレーでテスト用のプラスチック板（Ａ
ＢＳ樹脂）に塗装して塗膜の物性を評価した。組成およ
び評価結果を表１に示す。The curing agent was prepared by mixing at a ratio of HDI: IPDI = 50: 50, and an amount in which an equivalent amount of isocyanate groups corresponding to the hydroxyl groups of the resin of the main agent was added was added to the main agent to obtain a coating composition. did. This paint composition is made into a paint by adding a solvent and air sprayed onto a test plastic plate (A
(BS resin) and the physical properties of the coating film were evaluated. The composition and evaluation results are shown in Table 1.
【００２０】「Ｎｏ．２」 Ｎｏ．１において主剤の樹
脂組成比をポリエステル樹脂４０重量部、アクリル樹脂
６０重量部とし、硬化剤をＨＤＩ：ＩＰＤＩ＝５０：５
０の比率で配合した他はＮｏ．１と同様にして塗料組成
物を作製して塗膜の評価をおこなった。 「Ｎｏ．３」 Ｎｏ．１において主剤の樹脂組成比をポ
リエステル樹脂３０重量部、アクリル樹脂７０重量部と
し、硬化剤をＨＤＩ：ＩＰＤＩ＝６５：３５の比率で配
合した他はＮｏ．１と同様にして塗料組成物を作製して
塗膜の評価をおこなった。"No. 2" No. 1, the resin composition ratio of the main agent is 40 parts by weight of polyester resin and 60 parts by weight of acrylic resin, and the curing agent is HDI: IPDI = 50: 5.
No. except that it was blended at a ratio of 0 A coating composition was prepared in the same manner as in 1, and the coating film was evaluated. “No. 3” No. No. 1 except that the resin composition ratio of the main agent was 30 parts by weight of polyester resin and 70 parts by weight of acrylic resin, and the curing agent was blended at a ratio of HDI: IPDI = 65: 35. A coating composition was prepared in the same manner as in 1, and the coating film was evaluated.
【００２１】「Ｎｏ．４」 Ｎｏ．３において、硬化剤
をＨＤＩ：ＩＰＤＩ＝３５：６５の比率で配合した他は
Ｎｏ．３と同様の配合により塗料組成物を作製して塗膜
の評価をおこなった。 （比較例） 「Ｎｏ．１０」 実施例のＮｏ．１において主剤の樹脂
組成比をアクリル樹脂１００重量部としてポリエステル
樹脂を配合せず、硬化剤はＨＤＩ：ＩＰＤＩ＝５０：５
０の比率で配合した他はＮｏ．１と同様にして塗料組成
物を作製して塗膜の評価をおこなった。"No. 4" No. No. 3 except that the curing agent was blended at a ratio of HDI: IPDI = 35: 65. A coating composition was prepared with the same composition as in Example 3 and the coating film was evaluated. (Comparative Example) "No. 10" 1, the resin composition ratio of the main agent was 100 parts by weight of the acrylic resin, and the polyester resin was not mixed, and the curing agent was HDI: IPDI = 50: 5.
No. except that it was blended at a ratio of 0. A coating composition was prepared in the same manner as in 1, and the coating film was evaluated.
【００２２】「Ｎｏ．１１」 実施例のＮｏ．１におい
て主剤の樹脂組成比をポリエステル樹脂６０重量部、ア
クリル樹脂４０重量部とし、硬化剤はＨＤＩ：ＩＰＤＩ
＝５０：５０の比率で配合した他はＮｏ．１と同様にし
て塗料組成物を作製して塗膜の評価をおこなった。 （評価方法） 密着性：硬化塗膜に２ｍｍ間隔でごばん目が１００個で
きるようにカッターナイフで傷を入れ、塗膜面にセロハ
ンテープを張りつけて剥離した後、塗板上に残ったごは
ん目の塗膜の数を調べた。１００／１００は剥離なしを
示す。"No. 11" No. 11 of the embodiment. 1, the resin composition ratio of the main agent is 60 parts by weight of polyester resin and 40 parts by weight of acrylic resin, and the curing agent is HDI: IPDI.
= 50:50 except that the compounding ratio was 50.50. A coating composition was prepared in the same manner as in 1, and the coating film was evaluated. (Evaluation method) Adhesion: The cured coating film was scratched with a cutter knife so that 100 eyes could be formed at 2 mm intervals, and cellophane tape was attached to the surface of the coating film to peel it off, and then the rice that remained on the coated plate. The number of coating films was examined. 100/100 indicates no peeling.
【００２３】硬化性：塗装後８０℃で焼付け乾燥後、１
時間経過時の塗膜の表面を鉛筆硬化測定法で判定した。
塗膜面に傷がつかなかった鉛筆の硬度で示した。 不粘着性：焼付け乾燥８０℃、室温にて３時間経過後の
塗膜表面にガーゼを乗せて加圧し一定時間後にガーゼを
剥離して塗膜の付着剥離の度合いを調べた。 ポットライフ性：主剤と硬化剤を混合後の粘度と、２０
℃で２４時間後の粘度の増粘幅（秒）をフォードカップ
Ｎｏ．４にて測定した。Curability: After coating, baking at 80 ° C. and drying, 1
The surface of the coating film after the passage of time was judged by the pencil curing measurement method.
The hardness of a pencil that did not scratch the coating surface was shown. Non-tackiness: After baking and drying at 80 ° C. and room temperature for 3 hours, a gauze was placed on the surface of the coating and pressed, and after a certain time, the gauze was peeled off to examine the degree of adhesion and peeling of the coating. Pot life property: viscosity after mixing the main agent and the curing agent, 20
Ford cup No. 4 was measured.
【００２４】耐酸性：１０％硫酸を約１ｃｃ塗膜面に滴
下し、２０℃で２４時間放置後、水洗いして塗膜面の浸
食などの有無の有無を観察した。 耐候性：サンシャインウエザオメーターによる加速試験
２００時間経過後の塗膜面６０°グロス（光沢）の変化
を測定し変化のないものを合格とした。Acid resistance: 10% sulfuric acid was dripped onto the surface of the coated film of about 1 cc, left at 20 ° C. for 24 hours, washed with water and observed for erosion of the coated surface. Weather resistance: The change in 60 ° gloss (gloss) of the coating surface after 200 hours of acceleration test by a sunshine weatherometer was measured, and the change was accepted.
【００２５】[0025]
【表１】 [Table 1]
【００２６】表１に示すように実施例（Ｎｏ．１〜４）
の主剤の樹脂成分のアクリル樹脂とポリエステル樹脂と
の比率が８０／２０〜６０／４０の範囲であると、塗料
は通常の硬化性を保持してポットライフが長くなり使用
可能時間が延長できる。さらに形成される塗膜は密着
性、不粘着性を示し、耐酸性、耐候性も従来のものであ
る比較例と同じレベルを保持している。Examples (Nos. 1 to 4) as shown in Table 1
When the ratio of the acrylic resin and the polyester resin of the resin component of the main component is in the range of 80/20 to 60/40, the paint retains normal curability and the pot life becomes long and the usable time can be extended. Further, the formed coating film exhibits adhesiveness and non-adhesiveness, and has the same level of acid resistance and weather resistance as those of the conventional comparative examples.
【００２７】比較例Ｎｏ．１０のアクリル樹脂だけで構
成された主剤では、Ｎｏ．１と同じ組成の硬化剤を用い
た場合は、不粘着性は良いがポットライフが短くゲル化
し使用期間が短い。またＮｏ．１１のポリエステル樹脂
がアクリル樹脂より多いとポットライフは標準時間より
多少改善されるが、塗膜の硬化が遅く不粘着性が満足で
きないレベルであった。Comparative Example No. No. 10 is the main agent composed of acrylic resin of No. 10 only. When a curing agent having the same composition as that of No. 1 is used, the non-tackiness is good, but the pot life is short, gelation occurs, and the period of use is short. In addition, No. When the polyester resin of No. 11 was more than the acrylic resin, the pot life was slightly improved from the standard time, but the coating film was slow to cure and the tackiness was unsatisfactory.
【００２８】[0028]
【発明の効果】本発明のプラスチック用塗料組成物によ
れば、２液型であっても主剤に特定量のポリエステル樹
脂を配合することにより、所定期間のポットライフを有
し、かつ塗装皮膜の硬化性にすぐれ焼付け直後において
も硬化塗膜が粘着性を示さず、塗装品の重ね合わせなど
の取扱いが容易となる。また耐候性、耐酸性にも優れプ
ラスチック成形品の外観の向上、耐久性を向上させるこ
とができる。EFFECTS OF THE INVENTION According to the plastic coating composition of the present invention, even if it is a two-pack type, by mixing a specific amount of the polyester resin with the main component, it has a pot life of a predetermined period and a coating film It has excellent curability, and the cured coating film does not show tackiness immediately after baking, which makes it easy to handle coated products such as overlapping. It also has excellent weather resistance and acid resistance, and can improve the appearance and durability of the plastic molded product.
Claims (1)
主剤に配合されて該樹脂成分と架橋硬化する架橋成分を
含む硬化剤とからなる２液型のプラスチック用塗料組成
物において、 該樹脂成分は、アクリル系樹脂とポリエステル樹脂との
混合物からなりその配合比率がアクリル系樹脂：ポリエ
ステル樹脂＝９５：５〜５０：５０の範囲であることを
特徴とするプラスチック用塗料組成物。1. A two-component plastic coating composition comprising a main component containing a resin component as a main component, and a curing agent containing a crosslinking component that is mixed with the main component and crosslinks and cures with the resin component. The component is a mixture of acrylic resin and polyester resin, and the compounding ratio thereof is acrylic resin: polyester resin = 95: 5 to 50:50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4363492A JPH05239407A (en) | 1992-02-28 | 1992-02-28 | Coating composition for plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4363492A JPH05239407A (en) | 1992-02-28 | 1992-02-28 | Coating composition for plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05239407A true JPH05239407A (en) | 1993-09-17 |
Family
ID=12669301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4363492A Pending JPH05239407A (en) | 1992-02-28 | 1992-02-28 | Coating composition for plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05239407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402268B1 (en) * | 2001-06-05 | 2003-10-17 | 대한비케미칼주식회사 | Paint Composition For Plastics |
| JP2022510789A (en) * | 2018-12-20 | 2022-01-28 | シーカ テクノロジー アクチェンゲゼルシャフト | Two-component polyurethane composition |
-
1992
- 1992-02-28 JP JP4363492A patent/JPH05239407A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402268B1 (en) * | 2001-06-05 | 2003-10-17 | 대한비케미칼주식회사 | Paint Composition For Plastics |
| JP2022510789A (en) * | 2018-12-20 | 2022-01-28 | シーカ テクノロジー アクチェンゲゼルシャフト | Two-component polyurethane composition |
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