Method for preparing acrylic acid
First Claim
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1. IN A METHOD OF PREPARING GLACIAL ACRYLIC ACID MONOMER BY DEPOLYMERIZATION AT A TEMPERATURE OF FROM ABOUT 115 TO ABOUT 260*C. OF A HOMOPOLYMER OF BETA-PROPIOLACTONE, THE STEP OF RAPIDLY QUENCHING VAPORS OF ACRYLIC ACID MONOMER BY CONDENSATION WITH SUFFICIENT PRE-COOLED ACRYLIC ACID TO REDUCE THE TEMPERATURE BELOW 70*C.
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1 Claim
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1. IN A METHOD OF PREPARING GLACIAL ACRYLIC ACID MONOMER BY DEPOLYMERIZATION AT A TEMPERATURE OF FROM ABOUT 115 TO ABOUT 260*C. OF A HOMOPOLYMER OF BETA-PROPIOLACTONE, THE STEP OF RAPIDLY QUENCHING VAPORS OF ACRYLIC ACID MONOMER BY CONDENSATION WITH SUFFICIENT PRE-COOLED ACRYLIC ACID TO REDUCE THE TEMPERATURE BELOW 70*C.
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Current AssigneeAnthony J De Paola, Norman C. Wearsch
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Original AssigneeAnthony J De Paola, Norman C. Wearsch
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InventorsWearsch, Norman C., DE PAOLA ANTHONY J
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Application NumberUS03/826,768Time in Patent Office806 DaysField of SearchUS Class Current562/599CPC Class CodesC07C 51/09 from carboxylic acid esters...C07C 57/04 Acrylic acid; Methacrylic acid
