发明授权
US3646110A Bis-(4-hydroxy-3 5-dialkylbenzyl) carboxylic acid esters 失效
BIS-(4-羟基-3,5-二烷基苄基)羧酸酯

Bis-(4-hydroxy-3 5-dialkylbenzyl) carboxylic acid esters
摘要:
BIS - (4 - HYDROXY -3,5 - DIALKYLBENZYL) CARBOXYLIC ACID ESTERS, PARTICULARLY THOSE OF CYANOACETIC AND MOLONIC ACID, ARE STABILIZERS FOR RESINS. THEY ARE PREPARED BY REACTING 2 MOLES OF THE CORRESPONDING BENZYL HALIDES OR MANNICH BASES WITH 1 MOLE OF CARBOXYLIC ACID ESTER.
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