METHODS FOR SYNTHESIZING HIGH PURITY EPOXY COMPOUNDS AND PRODUCTS OBTAINED THEREFROM

    公开(公告)号:US20190322653A1

    公开(公告)日:2019-10-24

    申请号:US16475759

    申请日:2018-01-03

    Abstract: A process for preparing a diglycidyl ether of formula (1) to (9) with epichlorohydrin and a catalyst, for a time and at a temperature to provide a first reaction mixture comprising a dichlorohydrin of formula (1-d) to (9-d); adding a base to the first reaction mixture to provide a second reaction mixture over a period of 15 minutes to 3 hours; and agitating the second reaction mixture for 2 to 5 hours at 40 to 60° C., to provide an as-synthesized diglycidyl ether of formula (1) to (9) having a purity of 96 to 99% or greater as determined by high performance liquid chromatography is provided. An as-synthesized or isolated diglycidyl ether of formula (1) to (9) made by the provided process is provided. A cured composition comprising the cured product of the provided diglycidyl ether, and an article comprising the same are provided.

    HOMOGENEOUS AMORPHOUS HIGH HEAT EPOXY BLEND COMPOSITE COMPOSITIONS, ARTICLES, AND USES THEREOF

    公开(公告)号:US20190270844A1

    公开(公告)日:2019-09-05

    申请号:US16333099

    申请日:2017-03-13

    Abstract: A high heat epoxy prepreg, comprising a substrate; a high heat epoxy composition comprising: a hardener; a high heat epoxy mixture comprising: a high heat epoxy compound and an auxiliary epoxy compound different from the high heat epoxy compound; wherein the high heat epoxy mixture has a glass transition temperature between −10 C and 62 C, wherein the prepreg comprises 40 to 80 volume % substrate, and 60 to 20 volume % of the high heat epoxy composition, wherein the prepreg comprises 12 to 45 volume % of the high heat epoxy compound; wherein the high heat epoxy composition comprises 50 to 75 wt % of the high heat epoxy compound; and a cured, laminated sample of the prepreg has a maximum tensile stress of 800 MPa or greater, measured as per ASTM D 3039, and a modulus of 70 GPa or greater measured as per ASTM D 3039; and a cured sample of the high heat epoxy composition has a glass transition temperature greater than 200 C.

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