JP2007112889A - キャップ用塗料組成物 - Google Patents
キャップ用塗料組成物 Download PDFInfo
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- JP2007112889A JP2007112889A JP2005305175A JP2005305175A JP2007112889A JP 2007112889 A JP2007112889 A JP 2007112889A JP 2005305175 A JP2005305175 A JP 2005305175A JP 2005305175 A JP2005305175 A JP 2005305175A JP 2007112889 A JP2007112889 A JP 2007112889A
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- 239000004645 polyester resin Substances 0.000 claims abstract description 32
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- -1 fatty acid ester Chemical class 0.000 claims abstract description 29
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 25
- 239000004640 Melamine resin Substances 0.000 claims abstract description 21
- 229920000098 polyolefin Polymers 0.000 claims abstract description 21
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 18
- 239000000194 fatty acid Substances 0.000 claims abstract description 18
- 229930195729 fatty acid Natural products 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims description 35
- 239000011248 coating agent Substances 0.000 claims description 34
- 239000002253 acid Substances 0.000 claims description 18
- 238000002844 melting Methods 0.000 claims description 6
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 239000007787 solid Substances 0.000 abstract description 23
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- 239000002184 metal Substances 0.000 abstract description 20
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- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
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- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000002723 alicyclic group Chemical group 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 150000001412 amines Chemical class 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 2
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- IFDVQVHZEKPUSC-UHFFFAOYSA-N cyclohex-3-ene-1,2-dicarboxylic acid Chemical compound OC(=O)C1CCC=CC1C(O)=O IFDVQVHZEKPUSC-UHFFFAOYSA-N 0.000 description 2
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- XBZSBBLNHFMTEB-UHFFFAOYSA-N cyclohexane-1,3-dicarboxylic acid Chemical compound OC(=O)C1CCCC(C(O)=O)C1 XBZSBBLNHFMTEB-UHFFFAOYSA-N 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
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- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-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
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Abstract
【課題】 金属製素材との密着性、加工性、耐食性、加工性、キャップの開栓性及びライナーとの付着性に優れた塗膜を形成するキャップ用塗料組成物を見出すこと。
【解決手段】 1.水酸基含有ポリエステル樹脂(A)70〜95質量部とメラミン樹脂(B)5〜30質量部の固形分合計100質量部に対して、酸化ポリオレフィン(C)を1〜15質量部及び脂肪酸エステル(D)を0.5〜10質量部含有することを特徴とするキャップ用塗料組成物。
2.メラミン樹脂(B)が、メチルエーテル化メラミン樹脂である1項に記載のキャップ用塗料組成物。
【選択図】 なし
Description
従来、ライナーと金属製王冠との接着方法に関する発明で、エポキシ系樹脂組成物をプライマーとして用いたポリオレフィンライナーと金属製王冠との接着方法が開示されている(特許文献1)。しかし、特許文献1のエポキシ系樹脂組成物のプライマーを塗装してなる塗膜は、ライナーとの付着性が不十分であった。
ポリエステル樹脂は、多塩基酸と多価アルコールとのエステル化反応により調製することができる。多塩基酸は1分子中に2個以上のカルボキシル基を有する化合物であり、例えば、無水フタル酸、イソフタル酸、テレフタル酸、ヘキサヒドロフタル酸、ヘキサヒドロイソフタル酸、ヘキサヒドロテレフタル酸、ヘキサヒドロトリメリット酸、テトラヒドロフタル酸、メチルヘキサヒドロフタル酸、テトラヒドロ無水フタル酸、ヘキサヒドロ無水フタル酸、コハク酸、フマル酸、アジピン酸、セバシン酸、無水マレイン酸等の二塩基酸;二塩基酸の低級アルキルエステル;無水トリメリット酸、メチルシクロヘキセントリカルボン酸、無水ピロメリット酸などの3価以上の多塩基酸又は無水物などが挙げられ、これらの中、1分子中に1もしくは2個の4〜6員環程度の脂環式構造と少なくとも2個以上のカルボキシル基を有する脂環式多塩基酸、例えば、ヘキサヒドロフタル酸、ヘキサヒドロイソフタル酸、ヘキサヒドロテレフタル酸、ヘキサヒドロトリメリット酸、テトラヒドロフタル酸、メチルヘキサヒドロフタル酸及びそれらの無水物が挙げられる。この中でもシクロヘキサン−1,4−ジカルボン酸が好ましい。また、必要に応じて、上記多塩基酸に、安息香酸、クロトン酸、p−t−ブチル安息香酸などの一塩基酸を、分子量調整などの目的で、上記多塩基酸を、例えば、安息香酸、クロトン酸、p−t−ブチル安息香酸などの一塩基酸と併用することができる。更に、ヤシ油脂肪酸、脱水ひまし油脂肪酸等の油脂肪酸を併用することも可能である。
メラミン樹脂としては、例えば、メチロール化メラミンのメチロール基の一部又は全部を炭素数1〜8の1価アルコール、例えば、メチルアルコール、エチルアルコール、n−プロピルアルコール、i−プロピルアルコール、n−ブチルアルコール、i−ブチルアルコール、2−エチルブタノール、2−エチルヘキサノール等で、エーテル化した部分エーテル化又はフルエーテル化メラミン樹脂があげられる。
本発明の本キャップ用塗料組成物は、金属製素材との密着性やキャップ開栓性及びライナーの付着性向上を目的として、酸化ポリオレフィン(C)を配合する。酸化ポリオレフィン(C)は、乾燥状態で粉砕したもの、あるいは溶剤中で加熱溶解させた後冷却して溶剤中に樹脂粒子を析出させた分散体で、樹脂粒子の最大粒子径は100μm以下、好ましくは50μm以下、酸価は0.5〜40mgKOH/g、融点は100〜140℃の範囲のものが挙げられる。具体的には、酸化ポリエチレン、エチレン−アクリル酸共重合物、カルボン酸グラフト変性ポリオレフィン等を例示できる。
方法(2):水酸基含有ポリエステル樹脂(A)及びメラミン樹脂(B)の一部を、酸化ポリオレフィン(C)と加熱混合して混合物とし、次に該混合物を水酸基含有ポリエステル樹脂(A)とメラミン樹脂(B)と混合してキャップ用塗料組成物とする方法、が挙げられる。
本発明のキャップ用塗料組成物は、キャップ開栓性を向上させる目的で脂肪酸エステル(D)を配合する。脂肪酸エステル(D)は、凝固点20℃以下、特に10℃以下であることがキャップ開栓性の為にも好ましい。
製造例1 ポリエステル樹脂溶液No.1の製造例
TP−290(日本合成社製、ポリエステル樹脂、数平均分子量17,000、水酸基価5.5mgKOH/g、酸価1.5mgKOH/g、ガラス転移温度10℃)を混合溶剤a(注2)にて希釈して、固形分40%のポリエステル樹脂溶液No.1を得た。
(注2)混合溶剤a:ソルベッソ150(エッソ石油社製、高沸点芳香族炭化水素系溶剤)/シクロヘキサノン=70/30
バイロンGK−880(東洋紡績社製、ポリエステル樹脂、数平均分子量22,000、水酸基価4.5mgKOH/g、酸価1.0mgKOH/g、ガラス転移温度84℃)を混合溶剤a(注2)にて希釈して、固形分40%のポリエステル樹脂溶液No.2を得た。
P−440(三菱化学社製、ポリ塩化ビニル樹脂、重合度1,500)を混合溶剤b(注3)にて分散して、固形分40%のビニル樹脂溶液を得た。
(注3)混合溶剤b:ソルベッソ150/エチレングリコールモノブチルエーテル=50/50
ARALDITE ECN1299(旭チバ社製、エポキシ樹脂、エポキシ当量230)を混合溶剤a(注2)にて溶解して、固形分40%のエポキシ樹脂溶液を得た。
フラスコにて、TP−290(日本合成社製、水酸基含有ポリエステル樹脂)30部、サイメル303(日本サイテック社製、メチルエーテル化メラミン樹脂)20部(固形分50部)、ペトロライトE−2020(東洋ペトロライト社製、酸化ポリエチレン、酸価22mgKOH/g、融点116℃)50部、混合溶剤a(注2)を加えて、80℃にて1時間加熱混合して、固形分10%の変性ポリエチレン溶液を得た。
製造例1で得た固形分40%のポリエステル樹脂溶液No.1を200質量部(固形分80質量部)に、サイメル303(注4)20質量部(固形分20質量部)、ペトロライトE−2020(注6)5質量部、サンソフトNo.O-30B(注8)3質量部(固形分3質量部)及びNacure5925(注9)0.5質量部(固形分0.125質量部)を混合し、混合溶剤a(注2)を加えて固形分30%のキャップ塗料組成物No.1を得た。
(注4)サイメル303:日本サイテック社製、(完全)メチルエーテル化メラミン樹脂
(注5)サイメル370:日本サイテック社製、メチルエーテル化メラミン樹脂
(注6)ペトロライトE−2020:東洋ベトロライト社製、酸化ポリエチレン
(注7)4202E:三井化学社製製、酸化ポリエチレン
(注8)サンソフトNo.O-30B:太陽化学社製 、グリセリンと不飽和脂肪酸の合成油
(注9)Nacure5925:米国、キングインダストリイズ社製、ドデシルベン
ゼンスルホン酸のアミン中和物である硬化触媒
製造例2で得た固形分40%のポリエステル樹脂溶液No.2を200質量部(固形分80質量部)に、サイメル303(注4)20質量部(固形分20質量部)、ペトロライトE−2020(注6)5質量部、サンソフトNo.O-30B(注8)3質量部(固形分3質量部)及びNacure5925(注9)0.5質量部(固形分0.125質量部)を混合し、混合溶剤a(注2)を加えて固形分30質量%のキャップ用塗料組成物No.2を得た。
表1に示す配合とする以外は、実施例1と同様に行って固形分30質量%の各キャップ用塗料組成物を得た。
表2に示す配合とする以外は、実施例1と同様に行って固形分30%の各キャップ用塗料組成物を得た。
実施例及び比較例で得た塗料を厚さ0.24mmの#3105アルミニウム板に、乾燥膜厚が4μmとなるように塗装し、風速3m/秒の熱風で素材到達最高温度(PMT)が180℃となる条件で10分間焼き付けて各試験塗板を得た。得られた各試験塗板については、下記の試験方法に基づいて試験を行った。試験結果を表3、表4に示す。
○:塗面にハジキ、凹み、曇りなどの塗面異常の認められない
△:塗面にハジキ、凹み、曇りなどの塗面異常のいずれかが認められる
×:塗面にハジキ、凹み、曇りなどの塗面異常が著しい。
○:塗膜の剥離が全く認められない。
△:塗膜が僅かに剥離するが、マス目は90個以上残存。
×:塗膜がかなり剥離し、マス目の残存数は90個未満。
○:塗膜の剥離が全く認められない。
△:塗膜の剥離が僅かに認められる。
×:著しい塗膜の剥離が認められる。
◎:動摩擦係数が0.025以下
○:動摩擦係数が0.025を越えて、かつ0.04未満
△:動摩擦係数が0.04を越えて、かつ0.06未満
×:動摩擦係数が0.06以上。
◎:引っ張り強度が60N以上
○:引っ張り強度が30N以上でかつ60N未満
△:引っ張り強度が5N以上でかつ30N未満
×:引っ張り強度が5N未満
2.瓶断面
3.金属基材
4.ライナー用塗料組成物
5.ライナー
6.塗装板
7.ヒーター
8.外力を加える
Claims (5)
- 水酸基含有ポリエステル樹脂(A)70〜95質量部とメラミン樹脂(B)5〜30質量部の固形分合計100質量部に対して、酸化ポリオレフィン(C)を1〜15質量部及び脂肪酸エステル(D)を0.5〜10質量部含有することを特徴とするキャップ用塗料組成物。
- メラミン樹脂(B)が、メチルエーテル化メラミン樹脂である請求項1に記載のキャップ用塗料組成物。
- 酸化ポリオレフィン(C)の酸価が、0.5〜40mgKOH/gである請求項1又は2に記載のキャップ用塗料組成物。
- 酸化ポリオレフィン(C)の融点が、100〜140℃である請求項1〜3のいずれか1項に記載のキャップ用塗料組成物。
- 請求項1〜4のいずれか1項に記載のキャップ用塗料組成物を塗装してなるキャップ。
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CN116042061A (zh) * | 2021-10-28 | 2023-05-02 | 关西涂料株式会社 | 涂料组合物 |
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JPS63248877A (ja) * | 1986-11-20 | 1988-10-17 | Toyo Ink Mfg Co Ltd | 塗料用潤滑剤組成物 |
JPS6481867A (en) * | 1987-09-24 | 1989-03-28 | Toyo Ink Mfg Co | Aqueous dispersion composition |
JPS6481865A (en) * | 1987-09-24 | 1989-03-28 | Toyo Ink Mfg Co | Lubricating paint composition |
JPH1160860A (ja) * | 1997-08-15 | 1999-03-05 | Shin Etsu Chem Co Ltd | 軟質塩化ビニル系樹脂組成物及びその成形品 |
JP2000336319A (ja) * | 1999-05-26 | 2000-12-05 | Taiho Ind Co Ltd | 車両塗装面用処理剤 |
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JP2004255575A (ja) * | 2003-02-24 | 2004-09-16 | Kansai Paint Co Ltd | 意匠性金属缶 |
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CN116042061A (zh) * | 2021-10-28 | 2023-05-02 | 关西涂料株式会社 | 涂料组合物 |
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