The color and visual appeal of PES fibers used in the interior of the automobile are important elements of the overall design. To achieve this, selected colorants (pigments and polymer soluble colorants) are added to the fiber or yarn during the melt-spinning process in a method of in-process addition commonly known as mass-coloration.

Car interiors are subject to intense light exposure and high temperatures, which will degrade the fabrics, if they are not protected with appropriate light stabilizers. Performance of polyester seat fabrics can be improved by our light stabilizers Ciba® TINUVIN® 234 and Ciba® TINUVIN® 1577.