Process for the preparation of aluminum oxide carboxylate polymers
containing at most two percent by weight of ester
    9.
    发明授权
    Process for the preparation of aluminum oxide carboxylate polymers containing at most two percent by weight of ester 失效
    制备含二氧化铈羧酸酯聚合物的方法,以二酯重量百分比计

    公开(公告)号:US5075473A

    公开(公告)日:1991-12-24

    申请号:US521048

    申请日:1990-05-03

    摘要: The invention relates to a novel process for the preparation of aluminum oxide carboxylate polymers containing at most 2% by weight of ester by reacting an aluminum alkoxide of the general formula Al(OR).sub.3, wherein R stands for a C.sub.2-5 alkyl group, dissolved in an aromatic or aliphatic hydrocarbon with a solution of a C.sub.8-22 aliphatic or alicyclic monocarboxylic acid or carboxylic acid mixture and water in a C.sub.2-5 alkanol and removing the alkanol(s).The process according to the invention comprises introducing the solution of the aluminum alkoxide to a tube reactor having a 10 to 200 length/diameter ratio at a temperature exceeding by 15.degree.to 50.degree.C. the boiling point of the higher boiling alkanol among that corresponding to the alkanol component of aluminum alkoxide and that used as solvent; then feeding in the alkanolic solution containing the monocarboxylic acid and water, wherein the aluminum/monocarboxylic acid mole ratio is at least 10:1 and the aluminum/water mole ratio is at least 10:1; removing the alkanol formed in the reaction; returning the reaction mixture into the tube reactor; repeating this operation until the mono-carboxylic acid/aluminum mole ratio reaches 0.95 to 1.05 and the water/aluminum mole ratio reaches 0.9 to 1.0; and then making the product obtained free from alkanol.

    摘要翻译: 本发明涉及通过使通式为Al(OR)3的烷氧基铝反应其中R代表C 2-5烷基的方法制备含有至多2重量%酯的氧化铝羧酸盐聚合物的新方法, 用C8-22脂族或脂环族单羧酸或羧酸混合物和水溶解在C 2-5链烷醇中并除去链烷醇的芳族或脂族烃中。 根据本发明的方法包括在超过15℃至50℃的温度下将烷醇铝溶液引入具有10至200个长度/直径比的管式反应器中,其中相应的沸点高的烷醇的沸点 用作醇溶剂的烷醇成分; 然后进料含有一元羧酸和水的链烷醇溶液,其中铝/一元羧酸摩尔比为至少10:1,铝/水摩尔比为至少10:1; 除去反应中形成的链烷醇; 将反应混合物返回到管式反应器中; 重复该操作直到单羧酸/铝摩尔比达到0.95至1.05,水/铝摩尔比达到0.9至1.0; 然后使得到的产物不含链烷醇。