摘要:
The invention provides a process for preparing 1-alkoxy-2-methyl-1-oxopropan-2-yl(meth)acrylate, e.g. 1-methoxy-2-methyl-1-oxopropan-2-yl(meth)acrylate, by transesterifying alkyl α-hydroxyisobutyrates. Copolymerization of such monomers in the preparation of poly(meth)acrylate-based moulding materials improves the heat distortion resistance thereof.
摘要:
Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where R1 is H or CH3 and R2 is an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.
摘要:
Process for preparing bicyclic or tricyclic (meth)acrylates by reacting (meth)acrylic acid with a bicyclic or tricyclic hydrocarbon which contains at least one double bond using montmorillonite as catalyst.
摘要:
Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where R1 is H or CH3 and R2 is an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.
摘要:
The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.