Method for preparing a superplasticizer

Details Method for preparing a superplasticizer Method for preparing a superplasticizer

C - Chemistry, Metallurgy

08

G

C08G 81/00 (2006.01) B01F 17/00 (2006.01) C04B 24/24 (2006.01) C08G 81/02 (2006.01)

Patent

CA 2758059

The invention mainly relates to a method for preparing polyalkoxylated polycarboxylates in which is reacted, in the presence of water and a catalyst, at a temperature of 120 to 250°C: at least one polycarboxylic acid produced by polymerizing at least one unsaturated carboxylic acid; and at least one polyether having a free hydroxyl group capable of reacting with a carboxylic function of said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.

L'invention vise principalement un procédé de préparation de polycarboxylates polyalkoxylés dans lequel l'on fait réagir, en présence d'eau et d'un catalyseur, à une température comprise entre 120 et 250 °C : - au moins un acide polycarboxylique obtenu par polymérisation d'au moins un acide carboxylique insaturé; et au moins un polyéther portant un groupe hydroxyle libre capable de réagir avec une fonction carboxylique dudit acide polycarboxylique, caractérisé en ce que le catalyseur est un sel alcalin ou alcalin-terreux d'un acide protique fort.

Affiliated with

Also associated with

Rating

Method for preparing a superplasticizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing a superplasticizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing a superplasticizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2084682