| abstract |
LAMINATE STRUCTURE IN THE FORM OF AT LEAST TWO LAYERS ASSEMBLED WITH AN ADHESIVE CONSISTING ESSENTIALLY OF A POLYESTER PREPARED FROM A MOLE OF TEREPHALIC ACID OR A MIXTURE OF DICARBOXYLIC ACIDS CONTAINING AT LEAST 85MOLES OF ACID TEREPHTHALIC, FROM 0.65 TO 0.97MOLES OF 1,4-BUTANE-DIOL OR OF A MIXTURE OF POLYMETHYLENE-GLYCOLS CONTAINING AT LEAST 80 MOLES OF 1,4-BUTANE-DIOL AND 0.035 TO 0.35MOLES OF A POLYETHYLENE -GLYCOL OF MOLECULAR WEIGHT 150 TO 550, THE TOTAL QUANTITY OF THE DIOL COMPONENTS REPRESENTING A MOLE, LEDIT POLYESTER PRESENTING A CRYSTALLINITY NOT LESS THAN 25 AND BEING IN A STATE PRACTICALLY FREE OF SPHEROLITES. |