公开(公告)号：US3985711A

公开(公告)日：1976-10-12

申请号：US555431

申请日：1975-03-05

申请人： Choua Cohen ,  Bruno Durif-Varambon ,  Robert Salle ,  Bernard Sillion

发明人： Choua Cohen ,  Bruno Durif-Varambon ,  Robert Salle ,  Bernard Sillion

IPC分类号： C07C273/18 ,  C07C275/42 ,  C08G18/38 ,  C08G18/46 ,  C08G63/685 ,  C08L67/00 ,  H01B3/42 ,  C08G63/18

CPC分类号： H01B3/42 ,  C07C273/1827 ,  C08G18/3821 ,  C08G18/4653 ,  C08G63/6854 ,  C08L67/00 ,  A61H2201/10 ,  A61N2/00

摘要： A dicarboxylic compound complying with one of the general formulae: ##SPC1##In which R is a divalent radical selected from the aliphatic, alicyclic and aromatic radicals, the aliphatic containing 1-20 carbon atoms and the other containing from 5 to 20 carbon atoms, R.sup.1 is selected from the hydrogen atom and the alkyl and cycloalkyl groups containing from 1 to 10 carbon atoms and R.sup.2 is selected from the alkyl and cycloalkyl groups containing from 1 to 10 carbon atoms, the polyester resins derived therefrom being usable as enamelling composition, particularly for coating metal wires.

摘要翻译： 符合以下通式之一的二羧酸化合物：

公开(公告)号：US5545746A

公开(公告)日：1996-08-13

申请号：US367859

申请日：1995-01-03

申请人： Jacques Benzaria ,  Francois Dawans ,  Bruno Durif-Varambon ,  Jean-Bernard Gaillard

发明人： Jacques Benzaria ,  Francois Dawans ,  Bruno Durif-Varambon ,  Jean-Bernard Gaillard

IPC分类号： C07C29/09 ,  C07C51/09 ,  C07C51/41 ,  C07C67/48

CPC分类号： C07C51/09 ,  C07C29/095 ,  C07C51/41

摘要： An improved method for recovery of alkali metal or alkaline-earth metal terephthalate and of alkylene glycol, from polyalkylene terephthalate, in particular from polyethylene terephthalate (P.E.T.), alkylene glycol, in particular ethylene glycol produced in the form of vapor during the saponification reaction, initiated by the action of intensive kneading of polyalkylene terephthalate and the alkaline reagent at a temperature of 100.degree. to 200.degree. C. The alkylene glycol is recovered in gaseous form by entrainment by an inert gas or by extraction under low pressure. The alkaline terephthalate or alkaline-earth terephthalate is obtained in solid or powder form; it can easily be stored, transported and redissolved, in order to be purified and possibly transformed into terephthalic acid or ester.

摘要翻译： 聚对苯二甲酸亚烷基酯，特别是聚对苯二甲酸乙二醇酯（PET），亚烷基二醇，尤其是在皂化反应过程中以蒸汽形式生产的乙二醇，回收碱金属或碱土金属对苯二甲酸酯和亚烷基二醇的改进方法， 由聚对苯二甲酸亚烷基酯和碱性试剂在100至200℃的温度下强烈捏合的作用引发。亚烷基二醇通过惰性气体的夹带或低压萃取而以气态回收。 碱性对苯二甲酸酯或碱土类对苯二甲酸酯以固体或粉末形式获得; 它可以容易地储存，运输和重新溶解，以便被纯化并可能转化成对苯二甲酸或酯。