Process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride
    11.
    发明授权
    Process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride 失效
    异构化甲基-Δ4-四氢邻苯二甲酸酐的方法

    公开(公告)号:US4226779A

    公开(公告)日:1980-10-07

    申请号:US34502

    申请日:1979-04-30

    IPC分类号: C07C61/22 C07D307/89

    CPC分类号: C07C61/22

    摘要: A process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride, which comprises heat-treating it at 60.degree. to 300.degree. C. for 0.1 to 30 hours in the presence of at least one nitrogen-containing compound selected from the group consisting of (a) a quaternary ammonium compound and (b) a compound having a nitrogen atom bonded to the carbon atom of the carbonyl group (e.g., an amide, imide, carbamate, urea or semicarbazide compound). The product is liquid at room temperature, and especially suitable for use as a curing agent for epoxy resins.

    摘要翻译: 一种使甲基-Δ4-四氢邻苯二甲酸酐异构化的方法,其包括在至少一种选自以下的含氮化合物存在下,在60℃至300℃下热处理0.1-30小时( a)季铵化合物和(b)具有与羰基的碳原子键合的氮原子的化合物(例如酰胺,酰亚胺,氨基甲酸酯,脲或氨基脲化合物)。 该产品在室温下为液体,特别适合用作环氧树脂的固化剂。

    Epoxy resin composition
    14.
    发明授权
    Epoxy resin composition 失效
    环氧树脂组合物

    公开(公告)号:US4451637A

    公开(公告)日:1984-05-29

    申请号:US463024

    申请日:1983-02-01

    IPC分类号: C08G59/00 C07C61/29 C08G59/42

    CPC分类号: C07C61/29 C08G59/4223

    摘要: A heat-curable epoxy resin composition comprising (A) an epoxy resin and (B) an acid anhydride curing agent liquid at 20.degree. C. composed of, based on acid anhydride equivalents, of 10 to 70% of a tetrabasic acid anhydride represented by the following formula ##STR1## wherein R.sub.1 represents hydrogen or a methyl group, andR.sub.2 represents hydrogen or a lower alkyl group,and 30 to 90% of a liquid alicyclic dibasic acid anhydride.

    摘要翻译: 一种可热固化的环氧树脂组合物,其包含(A)环氧树脂和(B)在20℃下由基于酸酐当量组成的酸酐固化剂液体,其为10至70%的四碳酸酐,由 其中R 1表示氢或甲基,R 2表示氢或低级烷基,和30〜90%的液体脂环族二元酸酐。