Abstract: The paper put forward several cleaning solutions to improve the color fastness of polyestermicrofiber leather, and discussed the reason why leather surface has “yellow spots” after alkalinereduction cleaning. Results showed that the “yellow spots” are closely related to the disperse dyes and PUin the fabric. The combination of non-reduction cleaning and acid reduction cleaning can not only avoid“yellow spots”, but also improve the color fastness to soaping and water of the fabric.

Key words: polyester microfiber leather; cleaning; yellow spots on fabric; color fastness