| abstract |
The invention relates to a process for reducing degradation in the spinning of fiber-forming polyesters by adding to the polyester granules before spinning compounds of the general formula IN WHICH HYDROGEN ATOMS MAY BE REPLACED BY ALKYL OR ARYL RADICALS. These compounds react with the carboxyl end groups of the polyester, whereby in addition to the lesser degradation, a reduction of the number of free carboxyl end groups in the fiber is also obtained. |