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    Process for the preparation of boron-containing phenol-formaldehyde resins
    2.
    发明授权
    Process for the preparation of boron-containing phenol-formaldehyde resins 失效
    含硼酚醛树脂的制备方法

    公开(公告)号：US4182697A

    公开(公告)日：1980-01-08

    申请号：US9121

    申请日：1979-02-02

    申请人： Manfred Schmidt ,  Dieter Freitag ,  Hermann Fries ,  Erich Esch

    发明人： Manfred Schmidt ,  Dieter Freitag ,  Hermann Fries ,  Erich Esch

    IPC分类号： C08G8/00 ,  C08G8/20 ,  C08G8/28 ,  C08L21/00 ,  C08G8/30 ,  C08G8/32

    CPC分类号： C08G8/28 ,  C08L21/00

    摘要： The invention relates to a process for the preparation of boron-containing phenol/formaldehyde resins be reacting diphenylol alkane novolaks with unsaturated fatty acids or fatty acid esters and boron compounds, characterized in that diphenylol alkane novolaks having a molecular weight of from 400 to 1600 are reacted with from 15 to 35 parts by weight of an unsaturated fatty acid or its esters, accompanied by the azeotropic removal of water, and then with from 20 to 100 parts by weight of a boric acid trialkyl ester containing from 1 to 4 carbon atoms per alkyl group or with 14 to 72 parts by weight of a boric acid alkyl ester anhydride of the general formula (RO).sub.2 B--O--B--(OR).sub.2 with 1 to 4 carbon atoms per alkyl group R or with from 10 to 50 parts by weight, preferably from 15 to 20 parts by weight of boron trioxide or with from 18 to 90 parts by weight, preferably from 25 to 36 parts by weight of boric acid in the presence of a C.sub.1 -C.sub.4 alcohol.

    摘要翻译： 本发明涉及一种制备含硼酚醛树脂的方法，是使二羟甲基烷烃酚醛清漆与不饱和脂肪酸或脂肪酸酯和硼化合物反应，其特征在于分子量为400至1600的二羟甲基烷烃酚醛清漆是 与15至35重量份的不饱和脂肪酸或其酯反应，伴随着共沸除去水，然后与20至100重量份含有1至4个碳原子的硼酸三烷基酯 或具有14至72重量份的通式（RO）2 BOB-（OR）2的硼酸烷基酯酸酐，每个烷基R为1至4个碳原子或10至50重量份 ，优选15至20重量份的三氧化硼或18至90重量份，优选25至36重量份的硼酸，在C1-C4醇的存在下。