RESIN COMPOSITION FOR COATING AND COATING MATERIAL

To provide a resin composition from which a coated film excellent in suppression of cracking under outdoor environment and impact resistance can be obtained.SOLUTION: A resin composition for coating contains a main agent (A) containing an amino group-containing acrylic resin (a1) and a siloxane olig...

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Bibliographische Detailangaben
Hauptverfasser: UJII TAKAHIRO, TOMITA RIE, YOSHIMOTO YUICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a resin composition from which a coated film excellent in suppression of cracking under outdoor environment and impact resistance can be obtained.SOLUTION: A resin composition for coating contains a main agent (A) containing an amino group-containing acrylic resin (a1) and a siloxane oligomer (a2), and a curing agent (B) containing a polyepoxide (b1) and a curing catalyst (b2), wherein (a1) has an amine value of 8 mgKOH/g or more and 90 mgKOH/g or less, (b1) has an epoxy equivalent of 100 g/eq or more and 1,500 g/eq or less, in (a1), a reactive group capable of reacting with a silanol group does not exist or the number of the reactive groups is less than 11% of the number of the amino groups in (a1), and in (b1), the reactive group does not exist, or the number of the reactive groups is less than 10% of the number of the epoxy groups in (b1).SELECTED DRAWING: None 【課題】屋外環境下でのクラックの発生抑制および耐衝撃性に優れる塗膜が得られる樹脂組成物を提供する。【解決手段】塗料用樹脂組成物は、アミノ基含有アクリル樹脂(a1)とシロキサンオリゴマー(a2)とを含む主剤(A)およびポリエポキシド(b1)と硬化触媒(b2)とを含む硬化剤(B)を含み、(a1)は8mgKOH/g以上90mgKOH/g以下のアミン価を有し、(b1)は100g/eq以上1,500g/eq以下のエポキシ当量を有し、(a1)において、シラノール基と反応し得る反応性基が存在しないか、前記反応性基の数が、(a1)におけるアミノ基の数の11%未満であり、(b1)において、前記反応性基が存在しないか、前記反応性基の数が、(b1)におけるエポキシ基の数の10%未満である。【選択図】なし