EXPANDABLE PARTICLES OF STYRENE-MALEIC ANHYDRIDE COPOLYMER AND METHOD OF MOLDING THESE PARTICLES

摘要

THE INVENTION RELATES TO EXPANDABLE STYRENE-MALEIC ANHYDRIDE COPOLYMER PARTICLES IN WHICH THE BASIC COPOLYMER IS CHEMICALLY MODIFIED USING A HYDROXYLIC COMPOUND SUCH AS 1,4-BUTANEDIOL, DIETHYLENE GLYCOL, GLYCOL PHENOL, USEFUL FOR THE PREPARATION OF VARIOUS ARTICLES IN THE FORM OF FOAM HAVING A LOW DENSITY WITHOUT OVERLOADING OF THE PARTICLES AND ALSO HAVING GOOD THERMAL STABILITY.