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    • 4. 发明授权
    • Weather-resistant epoxy resin system
    • 耐候环氧树脂系统
    • US08436079B2
    • 2013-05-07
    • US12094422
    • 2006-10-26
    • Christian Beisele
    • Christian Beisele
    • C08G59/34C08G59/18C08G59/20C08L63/00B32B27/18B32B27/38B32B33/00
    • C08K5/3435Y10T428/31511C08L63/00
    • A curable epoxy resin composition of an epoxy resin (a) and a combination (b) of an antioxidant (b1) and a UV absorber (b2). The UV absorber (b2) is a benzotriazole. The antioxidant (b1) is a compound of general formula I: wherein: R1=—H, —OH, —O—C1-18 alkyl, —C1-18 alkyl, —C5-12 cycloalkyl being unsubstituted or being substituted with C1-6 alkyl or C1-6 alkoxy, or —CH2—C5-12 cycloalkyl being unsubstituted or being substituted with C1-6 alkyl or C1-6 alkoxy; R2,3,4,5=independent from each other —C1-6 alkyl; and R6=a bivalent aliphatic, cycloaliphatic or aromatic residue. The weight ratio of (a) to (b) is from 90.0:10.0 to 98.5:1.5, with the proviso that the weight portion of (b1) is at least 0.5. The cured product has very good weather resistance after curing by polyaddition with a polycarboxylic acid anhydride or by homopolymerization. The cured product is suitable as an electrical insulation material.
    • 环氧树脂(a)和抗氧化剂(b1)和紫外线吸收剂(b2)的组合(b))的可固化环氧树脂组合物。 紫外线吸收剂(b2)是苯并三唑。 抗氧化剂(b1)是通式I的化合物:其中:R1 = -H,-OH,-O-C1-18烷基,-C1-18烷基,-C5-12环烷基是未取代的或被C1- 6烷基或C 1-6烷氧基,或未被取代或被C 1-6烷基或C 1-6烷氧基取代的-CH 2 -C 5-12环烷基; R2,3,4,5 =彼此独立地-C 1-6烷基; 并且R6 =二价脂族,脂环族或芳族残基。 (a)至(b)的重量比为90.0:108至98.5:1.5,条件是(b1)的重量份至少为0.5。 固化产物通过用聚羧酸酐加聚固化或通过均聚固化后具有非常好的耐候性。 固化产品适合作为电绝缘材料。