Process for continuously preparing acetals of alpha, beta-dicarbonyl compounds
申请人:DEGUSSA AG
公开号:US20040186304A1
公开(公告)日:2004-09-23
The present invention relates to a process for preparing acetals of &agr;,&bgr;-dicarbonyl compounds of the general formula
(R″O)
2
CRCR′(OR″)
2
which are obtained by continuous reaction of &agr;,&bgr;-dicarbonyl compounds R—CO—CO—R′ with alcohols R″OH or HO—X—OH in countercurrent.
Verfahren zur kontinuierlichen Herstellung von Acetalen von alpha, beta-Dicarbonylverbindungen
申请人:Degussa AG
公开号:EP1460052A1
公开(公告)日:2004-09-22
Die vorliegende Erfmdung betrifft ein Verfahren zur Herstellung von Acetalen von α,β-Dicarbonylverbindungen der allgemeinen Formel
(R"O)2CRCR'(OR")2
wobei man diese durch kontinuierliche Reaktion von α,β-Dicarbonylverbindungen R-CO-CO-R' mit Alkoholen R"OH oder HO-X-OH im Gegenstrom erhält.
BINDEMITTELSYSTEM AUF POLYURETHANBASIS ZUR HERSTELLUNG VON KERNEN UND GIESSFORMEN UNTER VERWENDUNG CYCLISCHER FORMALE, FORMSTOFFMISCHUNG UND VERFAHREN
申请人:ASK Chemicals GmbH
公开号:EP2598550B1
公开(公告)日:2014-12-31
Novel adhesives comprising diacetals
申请人:Pizzi Antonio
公开号:US20060194918A1
公开(公告)日:2006-08-31
A glue with high-mechanical resistance, comprising a diacetal which is linear or cyclic, which can be prepared from C
2
-C
6
aldehydes and C
1
-C
12
alcohols from agricultural waste, compositions of wood, papers or stratified cardboard containing said resin or glue or prepared using said glue and products prepared with the aid of said paper or stratified cardboard, and a method for glueing mineral fibres wherein the fibres are glued with the aid of a resin or the above-mentioned glue.