Continuous preparation of alkyl esters of (meth)acrylic acid

C - Chemistry – Metallurgy – 07 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C 69/54 (2006.01) C07C 67/08 (2006.01)

Patent

CA 2196917

In the process for the continuous preparation of alkyl esters of (meth)acrylic acid by reacting (meth)acrylic acid with monohydric alkanols having from 1 to 8 carbon atoms in the presence of an acid esterification catalyst in a reaction zone, there is discharged from the reaction zone a product mixture which comprises the alkyl (meth)acrylate formed, the catalyst and the by-products formed during the course of the esterification having boiling points higher than that of the alkyl (meth)acrylate, and from which the alkyl (meth)acrylate is separated by distillation in a separation zone. The product mixture discharged from the reaction zone is fed to a rectification unit (I), in this unit the product mixture discharged is separatedby rectification into at least one product (I) comprising the alkyl ester of (meth)acrylic acid and a product (II) comprising the catalyst, the product (I) is fed to a further rectification unit (II) and in this the alkyl ester of (meth)acrylic acid is separated off by rectification.

Dans la préparation en continu d'esters alkyliques de l'acide (méth)acrylique par réaction de cet acide avec des alcools monohydriques de 1 à 8 atomes de carbone, en présence d'un catalyseur d'estérification d'acides dans la zone de réaction, un mélange est évacué de cette zone, lequel renferme le (méth)acrylate d'alkyle formé, le catalyseur et les produits secondaires formés au cours de l'estérification, dont les points d'ébullition sont supérieurs à ceux du (méth)acrylate d'alkyle; les produits secondaires sont séparés du (méth)acrylate d'alkyle par distillation dans une zone de séparation. Le mélange évacué de la zone de réaction est dirigé vers une unité de rectification (I), où il est fractionné par rectification en au moins un produit (I) renfermant l'ester alkylique de l'acide (méth)acrylique, et un produit (II) renfermant le catalyseur; le produit (I) est dirigé vers une autre unité de rectification (II), où l'ester alkylique de l'acide (méth)acrylique est séparé par rectification.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Continuous preparation of alkyl esters of (meth)acrylic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous preparation of alkyl esters of (meth)acrylic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous preparation of alkyl esters of (meth)acrylic acid will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1570072

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.