“Spandyer102” is a newly-developedinterface modifier，it can replace some ethylenediamine in the Spandex synthetic reaction.it can enhance the dyeing power of spandex，promotethe affinityof synthetic leather with acid dyesand direct dyes . Using the traditional application can substantiallyreducesynthetic leatherstrength，but spandyer96 can not affectthe strengthof synthetic leather.