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PROCEDURE FOR THE MANUFACTURE OF ACROLEIN AND ACRYLSYLIC acid, METACROLENE AND ACRYLSYLIC acid OR METACROLENE, METACRYLIC acid AND 1,3-BUTADIA BY CATALYTICAL OXIDATION IN THE GAS FACE OF A REPEATED COAL OF 3-4 COLATOMES
PROCEDURE FOR THE MANUFACTURE OF ACROLEIN AND ACRYLSYLIC acid, METACROLENE AND ACRYLSYLIC acid OR METACROLENE, METACRYLIC acid AND 1,3-BUTADIA BY CATALYTICAL OXIDATION IN THE GAS FACE OF A REPEATED COAL OF 3-4 COLATOMES