METHOD FOR PRODUCING CARBOXYLIC ACID ESTERS AND THE USE THEREOF AS PLASTICIZERS
申请人:BASF SE
公开号:US20160264509A1
公开(公告)日:2016-09-15
The present invention relates to a process for the production of carboxylic esters by reaction of carboxylic acids and/or carboxylic anhydrides with at least one alcohol selected from alkanols having at least 5 carbon atoms, cycloalkanols, and alkoxy-alkanols, in the presence of an acidic esterification catalyst. The invention further relates to the use of the resultant carboxylic esters as plasticizers or in a plasticizer composition for thermoplastic polymers and elastomers.
[EN] THE USE OF CARBOXYLIC ACID ESTERS AS LUBRICANTS<br/>[FR] UTILISATION D'ESTERS D'ACIDE CARBOXYLIQUE EN TANT QUE LUBRIFIANTS
申请人:BASF SE
公开号:WO2014005932A1
公开(公告)日:2014-01-09
The presently claimed invention is directed to the use of carboxylic acid esters which are obtained by reacting aliphatic dicarboxylic acids and a mixture of structurally different monoalcohols having 10 carbon atoms as lubricants and a process for their preparation.
The invention relates to a process for preparing a C
8
-C
24
alkyl(meth)acrylate by transesterification of methyl(meth)acrylate with a C
8
-C
24
alkanol, said process comprising the steps of:
(i) reacting methyl(meth)acrylate with the C
8
-C
24
alkanol in the presence of a tin-comprising catalyst and a stabilizer in the presence of an entraining agent which forms an azeotrope with methanol,
(ii) continuously distilling off the azeotrope of entraining agent and methanol wherein steps (i) and (ii) are carried out simultaneously until the C
8
-C
24
alkanol has been substantially completely reacted,
(iii) washing with an aqueous alkaline washing solution the C
8
-C
24
alkyl (meth)acrylate-comprising product mixture obtained in steps (i) and (ii) to remove from the product mixture the tin-comprising catalyst and at least some of the stabilizer,
(iv) distilling off unconverted methyl(meth)acrylate and entraining agent from the product mixture,
(v) distilling off water from the product mixture
wherein a product having a by-product content of <
0.5
% by weight is obtained after step (v) and step (iv) may also be carried out before step (iii) and steps (iv) and (v) may also be carried out in one distillation step.
PROCESS FOR PREPARING (METH)ACRYLATES OF C10-ALCOHOL MIXTURES
申请人:Meisenburg Uwe
公开号:US20100317887A1
公开(公告)日:2010-12-16
Process for preparing (meth)acrylates of C
10
-alcohol mixtures, by reacting (meth)acrylic acid with an isomer mixture of C
10
-alcohols composed of 2-propylheptanol as the main isomer and at least one of the C
10
-alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol and/or 2-propyl-4,4-dimethylpentanol, in the presence of at least one acidic catalyst and of at least one polymerization inhibitor and in the presence of a solvent which forms an azeotrope with water, the azeotrope is distilled off and condensed, and the condensate splits into an aqueous phase and an organic phase, wherein
a) the esterification is performed in a reactor with a circulation evaporator and
b) in the presence of a solvent, and
c) the crude product is purified by subsequent purifying distillation.
CONTINUOUS PROCESS FOR PREPARING (METH)ACRYLATES OF C10-
ALCOHOL MIXTURES
申请人:BASF SE
公开号:US20140135523A1
公开(公告)日:2014-05-15
A continuous process for preparing (meth)acrylates of C
10
-alcohol mixtures by reaction of glacial (meth)acrylic acid with an isomer mixture of C
10
-alcohols composed of 2-propylheptanol as the main isomer and at least one of the C
10
-alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol and/or 2-propyl-4,4-dimethylpentanol, and the use of a diester of dicarboxylic acids which have been esterified with N-oxyl-containing compounds as polymerization inhibitors in such a process.