Product Name: Dimethyl-5-Sulfoisophthalate Sodium Salt CAS number: 3965-55-7 EC number: 223-578-8 Molecular formula: C10H9O7SNa Molecular weight: 296.23 SIPM is widely used as the third monomer of cationic dyeable polyester (CDP), while CDP is a kind of modified Dacron. Dacron, chemical name polyethylene terephthalate (PET), is a kindof polyester fiber. Dacron fabrics are very popular in the market because of they are beautiful and easy to wash and dry. However, non-modified Dacron is difficult to dye because of its highcrystallization, high orientability and non polar group. CDP as a kind of modified Dacron is produced by introducing a third monomer SIPM. Since there is sulfonic group in CDP, it has good affinity performance to cationic dyes. So it’s moreeasily to dye and the dyed fibers have a bright and lasting color. CDP is easy for wool blend, so it is suitable for winter men and women clothing fabrics. Properties of SIPM: Good affinity performance to cationic dyes; Super dyeability Information provided by Sundow Polymers Co., Ltd |