Global Patent Index - EP 1478678 B8

EP 1478678 B8 2009-02-18 - PREPOLYMERS FOR NATIVE EPOXIDE RESINS AND METHOD FOR PRODUCING SAID PREPOLYMERS

Title (en)

PREPOLYMERS FOR NATIVE EPOXIDE RESINS AND METHOD FOR PRODUCING SAID PREPOLYMERS

Title (de)

PREPOLYMERE FUER NATIVE EPOXIDHARZE UND VERFAHREN ZU IHRER HERSTELLUNG

Title (fr)

PREPOLYMERES POUR RESINES EPOXY NATIVES ET LEUR PROCEDE DE PRODUCTION

Publication

EP 1478678 B8 (DE)

Application

EP 03709655 A

Priority

  • DE 0300595 W
  • DE 10208545 A

Abstract (en)

[origin: WO03072635A1] The invention relates to prepolymers for native epoxide resins that can be used on an industrial scale or in the various areas of everyday life, e.g. as coating materials or adhesives. The invention also relates to a method for producing these prepolymers. The aim of the invention is to provide substances that are suitable as prepolymers, that are suitable for obtaining native epoxide resins and that can be produced without safety hazards at economical costs. According to the invention, polyhydroxy-polyepoxy fatty acid alkyl ester ethers are used as the prepolymers. They belong to a class of substances that comprises oxirane rings, ether compounds and OH groups, and that therefore correspond to the synthetic resin components to a high degree. According to the inventive method, fatty alkylesters are epoxidized with hydrogen peroxide under the influence of performic acid at a temperature of from 70 DEG C to 90 DEG C. A part of the epoxides produced immediately reacts to polyhydroxyethers. The product mixtures so produced are removed from the acid water at a temperature of approximately 65 DEG C using fine-meshed wire nettings. The remainder of the acid water is removed by vacuum evaporation.

IPC 8 full level (invention and additional information)

C08G 65/22 (2006.01); C07D 301/14 (2006.01); C07D 301/16 (2006.01); C07D 303/42 (2006.01); C08G 59/00 (2006.01); C08G 59/62 (2006.01)

CPC (invention and additional information)

C08G 59/00 (2013.01); C07D 301/14 (2013.01); C07D 301/16 (2013.01); C07D 303/42 (2013.01); C08G 59/62 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

EPO simple patent family

WO 03072635 A1 20030904; AT 332326 T 20060715; AU 2003214013 A1 20030909; DE 10308252 A1 20031016; DE 50304134 D1 20060817; EP 1478678 A1 20041124; EP 1478678 B1 20060705; EP 1478678 B8 20090218

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