| abstract |
THE INVENTION RELATES TO A TEREPHTHALIC-TYPE COPOLYESTER AND THE RESULTING FIBERS AND STOFFS. IN COPOLYESTER, OVER 80 MOLES PERCENT OF CARBOXYLIC ACID-TYPE CONSTITUENTS COME FROM TEREPHTHALIC ACID AND OVER 80 MOLES PERCENT OF GLYCOL-TYPE CONSTITUENTS COME FROM ETHYLENE-GLYCOL, TETRAMETHYLENE AND 1,4- GLYCOL CYCLOHEXANE-DIMETHANOL, HOWEVER 1 TO 10 ARE FROM A GLYCOL: HO (CHO) R - O - CHO) H (I) R: HYDROCARBON ALIPHATIC DIVALENT GROUP HAVING 4 TO 20CARBONS; K AND L: 2 A 4; M AND N: WHOLE NUMBERS; L M N 10. THE FIBERS OBTAINED RETAIN GOOD MECHANICAL STRENGTH; THEY CAN DAIN WELL, ESPECIALLY USING DISPERSED OR BASIC DYES, GIVING SOLID DYES TO LIGHT. |