Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1998-08-11
1999-12-28
Zitomer, Fred
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
526173, 526174, 526328, 5263285, 560205, 560234, C07C 6702, C08F 2010
Patent
active
060084049
ABSTRACT:
The present invention relates to a process to prepare alkyl (meth)acrylate esters from corresponding alkyl/methacrylate esters using an alkali metal alkoxide as an ester interchange catalyst to produce an alkyl (meth)acrylate ester monomer product C ##STR1## The present invention further relates to the use of bromide and iodide salts as free radical polymerization inhibitors. The present invention further relates to the use of a noninterfering alcohol or polyol that prevents anionic polymerization reactions of reactant ester B and/or alkyl (meth)acrylate product C. The present invention further relates to a process for inhibiting polymerization of (meth)acrylates being synthesized in a transesterification or ester-ester interchange reaction system.
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Miller Timothy M.
Pondicherry Narayanan
Trapasso Louis E.
van de Sande Aaron
Ciba Specialty Chemicals Corporation
Crichton David R.
Zitomer Fred
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