Method of preparing esters of acrylic acid and methacrylic acid by
transesterification
    4.
    发明授权
    Method of preparing esters of acrylic acid and methacrylic acid by transesterification 失效
    通过酯交换制备丙烯酸和甲基丙烯酸的酯的方法

    公开(公告)号:US4745213A

    公开(公告)日:1988-05-17

    申请号:US745486

    申请日:1985-06-17

    CPC分类号: C07C69/54 C07C67/03

    摘要: A method of preparing an ester of (meth)acrylic acid by transesterification with an alcohol, comprising, reacting a (meth)acrylic acid ester formed from an alcohol of 1 to 4 carbon atoms with a transesterifying alcohol, which is not a polybasic alcohol and which is different from the alcohol portion of said (meth)acrylic acid ester, in the presence of a catalyst system comprised of compounds A+B, wherein compound A is Li.sub.n Y, wherein Y is a halide, chlorate, carbonate, carboxylate of 1 to 6 carbon atoms, an alkoxide of 1 to 4 carbon atoms, hydroxide or oxide, and n is 1 or 2, depending on the valence of Y; and compound B is CaX.sub.q, wherein X is oxide or chloride and q is 1 or 2, depending on the valence of X, with the provision that at least one of the two anionic components Y and X is oxygen-containing.

    摘要翻译: 一种通过醇的酯交换制备(甲基)丙烯酸酯的方法,其包括使由1至4个碳原子的醇形成的(甲基)丙烯酸酯与不是多元醇的酯交换反应醇反应,和 其与所述(甲基)丙烯酸酯的醇部分在由化合物A + B组成的催化剂体系存在下,其中化合物A为LinY,其中Y为卤化物,氯酸盐,碳酸盐,羧酸盐,其为1至 6个碳原子,1至4个碳原子的醇盐,氢氧化物或氧化物,n为1或2,这取决于Y的化合价; 并且化合物B是CaXq,其中X是氧化物或氯化物,q是1或2,这取决于X的化合价,条件是两个阴离子组分Y和X中的至少一个是含氧的。

    Method for preparing esters of acrylic acid and methacrylic acid by
transesterification
    5.
    发明授权
    Method for preparing esters of acrylic acid and methacrylic acid by transesterification 失效
    通过酯交换法制备丙烯酸和甲基丙烯酸的酯的方法

    公开(公告)号:US4672105A

    公开(公告)日:1987-06-09

    申请号:US745485

    申请日:1985-06-17

    CPC分类号: C07C67/03

    摘要: A method for preparing an ester of (meth)acrylic acid with a polyhydric alcohol comprising, transesterifying a (meth)acrylic acid ester derived from an alcohol of 1-4 carbon atoms with a transesterifying polyhydric alcohol in the presence of at least one metal compound catalyst system, said catalyst system being comprised of compounds A or a combination of compounds A+B, wherein A represents at least one compound of the formula: Li.sub.n Y, wherein Y is halide, chlorate, carbonate, carboxylate of 1 to 6 carbon atoms, an alkoxide of 1 to 4 carbon atom, hydroxide or oxide and n is 1 or 2, and wherein B is the compound: CaX.sub.q, wherein X is oxide or chloride, and q is 1 or 2; with the provision that at least one of the two anionic components Y and X is oxygen-containing.

    摘要翻译: 一种制备(甲基)丙烯酸与多元醇的酯的方法,该方法包括在至少一种金属化合物的存在下,酯交换衍生自1-4个碳原子的醇的(甲基)丙烯酸酯与酯交换多元醇 催化剂体系,所述催化剂体系由化合物A或化合物A + B的组合组成,其中A表示至少一种下式的化合物:LinY,其中Y为1至6个碳原子的卤化物,氯酸盐,碳酸盐,羧酸盐, 1〜4个碳原子的烷氧基,氢氧化物或氧化物,n为1或2,其中B为化合物:CaXq,其中X为氧化物或氯化物,q为1或2; 其中两个阴离子组分Y和X中的至少一个是含氧的。