JP6582318B2 - フレキシブルプラスチックフィルム用コーティング組成物 - Google Patents
フレキシブルプラスチックフィルム用コーティング組成物 Download PDFInfo
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Description
3〜6官能性アクリレート系バインダー;
7〜20官能性ウレタンアクリレート系バインダー;
光開始剤;並びに
d50が20〜35nmの第1無機微粒子群およびd50が40〜130nmの第2無機微粒子群を含むことでバイモーダル(bi−modal)粒子分布を有する無機微粒子;を含む、コーティング組成物を提供する。
3官能のアクリレート系バインダーのトリメチロールプロパントリアクリレート(TMPTA)(製造会社:Cytec、Mw=296g/mol、アクリレート基当量=99g/mol)30g、9官能のウレタンアクリレート系バインダーのMU9800(製造会社:MIWON、Mw=3500g/mol、アクリレート基当量=389g/mol)40g、10官能のウレタンアクリレート系バインダーのMU9020(製造会社:MIWON、Mw=4500g/mol、アクリレート基当量=450g/mol)30g、光開始剤Irgacure184(製造会社:Ciba)1g、メチルエチルケトン(MEK)15gを混合して、アクリレート溶液を製造した。
実施例1において、S2分散溶液を83.3gとし、別途のメチルエチルケトン溶媒を含まないことを除けば、実施例1と同様の方法でコーティング層を形成した。
実施例1において、メチルエチルケトンを25gとし、S2分散溶液50gの代わりに、シリカ粒子S3(d10=108nm、d50=119nm、d90=131nmであり、アクリレートシランカップリング剤で表面改質される)がMEKに40重量%分散している溶液(以下、S3分散溶液)37.5gを混合して、コーティング組成物を製造した。
TMPTA(製造会社:Cytec、Mw=296g/mol、アクリレート基当量=99g/mol)20g、MU9800(製造会社:MIWON、Mw=3500g/mol、アクリレート基当量=389g/mol)40g、MU9020(製造会社:MIWON、Mw=4500g/mol、アクリレート基当量=450g/mol)40g、光開始剤Irgacure184(製造会社:Ciba)1g、メチルエチルケトン(MEK)12gを混合して、アクリレート溶液を製造した。
TMPTA(製造会社:Cytec、Mw=296g/mol、アクリレート基当量=99g/mol)30g、MU9020(製造会社:MIWON、Mw=4500g/mol、アクリレート基当量=450g/mol)30g、15官能のウレタンアクリレート系バインダーのSC2152(製造会社:MIWON、Mw=20,000g/mol、アクリレート基当量=1,333g/mol)40g、光開始剤Irgacure184(製造会社:Ciba)1g、メチルエチルケトン(MEK)42gを混合して、アクリレート溶液を製造した。
実施例1において、メチルエチルケトンを55gとし、コーティング組成物にシリカ粒子を含まないことを除けば、実施例1と同様にしてコーティング層を形成した。
実施例1において、メチルエチルケトンを12gとし、シリカ粒子S4(d10=12nm、d50=17nm、d90=21nmであり、アクリレートシランカップリング剤で表面改質される)がMEKに40重量%分散している溶液(以下、S4分散溶液)のみを112.5g用いたことを除けば、実施例1と同様にしてコーティング層を形成した。
実施例1において、メチルエチルケトンを35gとし、S1分散溶液のみを110g含むことを除けば、実施例1と同様にしてコーティング層を形成した。
実施例1において、S3分散溶液を125g、S4分散溶液を25g用い、別途のメチルエチルケトン溶媒を含まないことを除けば、実施例1と同様の方法でコーティング層を形成した。
比較例3において、MU9800とMU9020を用いず、6官能のポリエステルアクリレート系バインダーのPS610(製造会社:MIWON、Mw=5,400g/mol、アクリレート基当量=900g/mol)70gを用いたことを除けば、残りの工程は比較例3と同様にしてコーティング層を形成した。
鉛筆硬度測定器を用いて、測定標準JIS K5400−5−4により750gの荷重、45度の角度で3回往復した後、キズのない最大硬度を確認した。
分光光度計(機器名:COH−400)を用いて、透過率およびヘイズを測定した。
測定標準JIS K5600−5−1の方法により各フィルムを多様な直径の円筒形マンドレルに挟んで巻いた後、長さ3mm以上のクラックが発生しない最小直径を測定した。
実施例および比較例の各フィルムに対して裁断するが、エッジ(edge)部位の微細クラックを最小化するように、80x140mmの大きさにレーザ裁断した。測定装備上にレーザ裁断されたフィルムを載せて、折り畳まれる部位の間隔が4mmとなるようにして、常温でフィルムの両側を底面に対して90度に折り畳んだり広げたりを連続動作(フィルムが折り畳まれる速度は1.5秒あたり1回)で1万回繰り返した。
曲げ耐久性テストにおけるのと同様に、実施例および比較例の各フィルムに対して裁断するが、エッジ(edge)部位の微細クラックを最小化するように、80x140mmの大きさにレーザ裁断した。
フィルムの回復性を測定するために、曲げ耐久性および安定性の物性を測定したフィルムをそれぞれ常温で1時間放置後、5)曲げ安定性テスト方法により再び浮き上がった高さZの最大値を測定し、折り畳まれた部分の外観の変化を肉眼観察した。
Claims (7)
- 3〜6官能性アクリレート系バインダー;
7〜20官能性ウレタンアクリレート系バインダー;
光開始剤;並びに
d50が20〜35nmの第1無機微粒子群およびd50が40〜130nmの第2無機微粒子群を含むことでバイモーダル(bi−modal)粒子分布を有する無機微粒子;
を含む、
コーティング組成物であって、
前記3〜6官能性アクリレート系バインダーのアクリレート当量(equivalent weight)が50〜300g/molであり、
前記7〜20官能性ウレタンアクリレート系バインダーのアクリレート当量は、
200〜1,500g/molである、
コーティング組成物。 - 前記3〜6官能性アクリレート系バインダーおよび7〜20官能性ウレタンアクリレート系バインダーの重量比は、
1:9〜4:6である、
請求項1に記載のコーティング組成物。 - 前記コーティング組成物の固形分100重量部に対して、
前記3〜6官能性アクリレート系バインダーを10〜40重量部、
前記7〜20官能性ウレタンアクリレート系バインダーを40〜70重量部、
前記第1無機微粒子群を5〜40重量部、
前記第2無機微粒子群を5〜40重量部、
前記光開始剤を0.1〜5重量部含む、
請求項1に記載のコーティング組成物。 - 前記第1無機微粒子群および第2無機微粒子群は、
それぞれ独立に、同一または異なって、
(メタ)アクリルシラン((meth)acrylsilane)、メタクロキシシラン(methacroxysilane)、ビニルシラン(vinylsilane)、エポキシシラン(epoxysilane)、およびメルカプトシラン(mercaptosilane)からなる群より選択されるいずれか1つ以上のシランカップリング剤で表面が改質処理されたものである、
請求項1から3のいずれか1項に記載のコーティング組成物。 - 前記第1無機微粒子群のd10は、10〜19nmであり、
d90は、25〜40nmであり、
前記第2無機微粒子群のd10は、25〜110nmであり、
d90は、60〜150nmである、
請求項1から4のいずれか1項に記載のコーティング組成物。 - 前記第1無機微粒子群および第2無機微粒子群の重量比は、
9:1〜3:7である、
請求項1から5のいずれか1項に記載のコーティング組成物。 - フレキシブル(flexible)プラスチックフィルムの製造に使用される、
請求項1から6のいずれか1項に記載のコーティング組成物。
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US20180208793A1 (en) | 2018-07-26 |
KR20170016298A (ko) | 2017-02-13 |
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EP3315569A4 (en) | 2018-06-27 |
KR102107737B1 (ko) | 2020-05-07 |
US11161951B2 (en) | 2021-11-02 |
EP3315569B1 (en) | 2020-10-28 |
KR20200044780A (ko) | 2020-04-29 |
US20200216713A1 (en) | 2020-07-09 |
CN107849389A (zh) | 2018-03-27 |
KR102294400B1 (ko) | 2021-08-26 |
KR102107736B1 (ko) | 2020-05-07 |
KR20190129813A (ko) | 2019-11-20 |
US10626292B2 (en) | 2020-04-21 |
JP2018525476A (ja) | 2018-09-06 |
EP3315569A1 (en) | 2018-05-02 |
CN107849389B (zh) | 2020-08-14 |
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