公开(公告)号：US5917059A

公开(公告)日：1999-06-29

申请号：US969775

申请日：1997-11-13

Applicant: Bernd Bruchmann ,  Karl Haberle ,  Helmut Gruner ,  Michael Hirn

Inventor： Bernd Bruchmann ,  Karl Haberle ,  Helmut Gruner ,  Michael Hirn

IPC: C07D317/20 ,  C07D317/12 ,  C07D319/06

CPC classification number: C07D317/20

Abstract: Cyclic acetals or ketals are prepared by reacting a polyol with the appropriate aldehydes or ketones, with part of the aldehyde or ketone being distilled out during the reaction.

Abstract translation: 通过使多元醇与合适的醛或酮反应制备环状缩醛或缩酮，部分醛或酮在反应期间被蒸馏掉。

公开(公告)号：US6063957A

公开(公告)日：2000-05-16

申请号：US64001

申请日：1998-04-21

Applicant: Rainer Koniger ,  Wolfgang Reich ,  Erich Beck ,  Helmut Gruner

Inventor： Rainer Koniger ,  Wolfgang Reich ,  Erich Beck ,  Helmut Gruner

IPC: C08G65/32 ,  C07C67/08 ,  C08G18/83 ,  C08G59/00 ,  C08G59/16 ,  C08G59/42 ,  C08G63/21 ,  C08G63/47 ,  C08G63/52 ,  C08G63/78 ,  C08G63/91 ,  C08G65/332 ,  C08G65/48 ,  C07C67/48

CPC classification number: C08G65/3322 ,  C07C67/08 ,  C08G18/831 ,  C08G59/00 ,  C08G59/1461 ,  C08G59/42 ,  C08G63/21 ,  C08G63/47 ,  C08G63/918 ,  C08G2650/16 ,  C08G2650/20 ,  C08L2312/00

Abstract: A process for preparing esters E of low residual acid content from .alpha.,.beta.-monoethylenically unsaturated C.sub.3 -C.sub.6 mono- and dicarboxylic acids S and hydroxyl-containing polycondensates P, wherea) the acid S and the polycondensate P or the monomeric and/or oligomeric and/or polymeric components which form the polycondensate P, are reacted in the presence or absence of a solvent and/or of an esterification catalyst and/or of further additives, with removal of the water which forms, andb) the unreacted acid S is removed by distillation,comprises adding water for the distillative removal of the acid S in step b).

Abstract translation: 从α，β-单烯属不饱和C3-C6单羧酸和二羧酸S和含羟基的缩聚物P制备低残留酸含量的酯E的方法，其中a）酸S和缩聚物P或单体和/或 形成缩聚物P的低聚物和/或聚合物组分在存在或不存在溶剂和/或酯化催化剂和/或其它添加剂的情况下反应，除去形成的水，和b）未反应的酸 通过蒸馏除去S，包括在步骤b）中加入用于蒸馏除去酸S的水。

公开(公告)号：US20070129564A1

公开(公告)日：2007-06-07

申请号：US10588488

申请日：2005-02-16

Applicant: Reinhold Schwalm ,  Barbel Meyer ,  Helmut Gruner ,  Thomas Daniel ,  Ulrich Riegel ,  Dieter Hermeling

Inventor： Reinhold Schwalm ,  Barbel Meyer ,  Helmut Gruner ,  Thomas Daniel ,  Ulrich Riegel ,  Dieter Hermeling

IPC: C07C69/00

CPC classification number: C07C67/08 ,  C07C67/62 ,  C07C69/54

Abstract: Process for preparing (meth)acrylic esters, in which chromanol derivatives are used as stabilizers against polymerization, and the use of the thus obtainable (meth)acrylic esters.

Abstract translation: 用于制备（甲基）丙烯酸酯的方法，其中色氨酸衍生物用作聚合反应的稳定剂，以及由此得到的（甲基）丙烯酸酯的用途。