FULVENT BINDER COMPOSITION, PROCESS FOR PREPARING THE SAME AND APPLICATION THEREOF AS FOUNDRY BINDER

摘要

THE BINDER COMPOSITION ACCORDING TO THE INVENTION CONTAINS A FULVENE OF FORMULA: BR/ (CF DRAWING IN BOPI) BR/ IN WHICH R AND R EACH REPRESENT A HYDROGEN ATOM OR A REMAINDER OF HYDROCARBON IN CC, OR A REMAINDER OF HYDROCARBON CONTAINING ONE OR MORE OXYGEN BRIDGES IN ITS CHAIN OR A FURYL GROUP, OR R AND R ARE LINKED TOGETHER TO FORM A CYCLIC GROUP, R, R, R AND R EACH REPRESENT A HYDROGEN ATOM OR A GROUP METHYL, PROVIDED THAT AT THE MAXIMUM SINGLE OF THESE R, R, R AND R REMAINS IS A METHYL GROUP AND, WHEN AN ALDEHYDE OR KETONE IS USED IN THE PREPARATION OF VULVENE, R OR R MAY HAVE THE STRUCTURE: BR / (CF DRAWING IN BOPI) BR/ OR ITS POLYMER OR THEIR MIXTURES, AND A CATALYTIC QUANTITY OF A METAL SALT AS A CATALYST, IN WHICH THE METAL OF SAID SALT MAY EXIST IN AT LEAST TWO STATES OF VALENCIA.