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公开(公告)号：US4205188A
公开(公告)日：1980-05-27
申请号：US940698
申请日：1978-09-08
CPC分类号： C07C37/72
摘要： A process is provided for the production of hydroxybenzyl alcohols, comprising condensing phenol with formaldehyde in an alkaline solution to form a mixture of ortho- and para-hydroxymethyl phenols, and solvent extracting unreacted phenol from the resulting alkaline hydroxybenzyl alcohol condensate solution. The phenol-reduced hydroxybenzyl alcohol condensate solution is particularly suited for treatment with excess caustic and subsequent oxidation of the resulting aqueous solution of ortho- and para-hydroxybenzyl alcohols-sodium salt to yield the corresponding ortho- and para-hydroxybenzaldehydes-sodium salt.
摘要翻译： 提供了用于生产羟基苄醇的方法，其包括在碱性溶液中将苯酚与甲醛缩合以形成邻羟基甲酯和对羟甲基苯酚的混合物，以及从所得碱性羟基苄醇缩合物溶液中萃取未反应的苯酚。 苯酚还原的羟基苄醇缩合物溶液特别适合用过量苛性碱处理，随后氧化得到的邻 - 和对 - 羟基苄基醇 - 钠盐水溶液，得到相应的邻 - 和对 - 羟基苯甲醛 - 钠盐。
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公开(公告)号：US4694064A
公开(公告)日：1987-09-15
申请号：US834993
申请日：1986-02-28
IPC分类号： C08G73/00 , C08G63/44 , C08G65/28 , C08G65/38 , C08G69/00 , C08G69/02 , C08G73/02 , C08G75/00 , C08G75/02 , C08G75/20 , C08G83/00 , C08G69/10
CPC分类号： C08G83/003 , C08G73/02 , Y10S424/16
摘要： Rod-shaped dendrimers having a plurality of dendritic branches emanating from an essentially linear core are prepared by first reacting a linear polyfunctional core compound such as a polyethyleneimine with a first dendritic branching reactant such as an ester of an unsaturated carboxylic acid, e.g., methyl acrylate, and then successively reacting the resulting product with a second dendritic branching reactant such as ethylenediamine and then with the first or another dendritic branching reactant.The rod-shaped dendrimers are useful in the production of molecular composites and as crystallinity modifiers for polymeric materials.
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