ADHESIVE RESIN COMPOSITION
To provide an adhesive resin composition having good pot-life property since a polyester resin alone can be cured without a curing agent.SOLUTION: An adhesive resin composition includes a polyester resin (A), and satisfies the following requirements (i)-(v). (i) The acid value of the polyester resin...
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Zusammenfassung: | To provide an adhesive resin composition having good pot-life property since a polyester resin alone can be cured without a curing agent.SOLUTION: An adhesive resin composition includes a polyester resin (A), and satisfies the following requirements (i)-(v). (i) The acid value of the polyester resin (A) is 100 eq/ton or higher. (ii) The content of a curing agent in the adhesive resin composition is less than 1 pts.mass to 100 pts.mass of a solid content of the polyester resin (A). (iii) A diol (a) having two primary hydroxyl groups and no alicyclic structure, and further any or both of a diol (b) having an alicyclic structure, and a diol (c) having one primary hydroxyl group, one secondary hydroxyl group and no alicyclic structure are included as polyol constituents constituting the polyester resin (A). (iv) The polyester resin (A) has a branch structure. (v) The glass transition temperature of the polyester resin (A) is 5-50°C.SELECTED DRAWING: None
【課題】硬化剤を含有せずともポリエステル樹脂単独で硬化できることで、良好なポットライフ性を有する接着剤樹脂組成物。【解決手段】ポリエステル樹脂(A)を含み、次の(i)~(v)の要件を満たす接着剤樹脂組成物。(i)ポリエステル樹脂(A)の酸価が100eq/ton以上である。(ii)接着剤樹脂組成物中の硬化剤の含有量が、固形分換算で、ポリエステル樹脂(A)の固形分100質量部に対して1質量部未満である。(iii)ポリエステル樹脂(A)を構成するポリオール成分として、1級水酸基を2個有しかつ脂環構造を有さないジオール(a)を含み、さらに、脂環構造を有するジオール(b)および1個の1級水酸基と1個の2級水酸基を有しかつ脂環構造を有さないジオール(c)のいずれかまたは両方を含む。(iv)ポリエステル樹脂(A)が分岐構造を有する。(v)ポリエステル樹脂(A)のガラス転移温度が5~50℃である。【選択図】なし |
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