Synthesis and three dimensional pattern finishing properties of blocked isocyanate prepolymers

Two kinds of blocked isocyanate prepolymers (BIPs), BIP-S and BIP-H, were synthesized, and three dimensional pattern (3D) finishing properties of BIPs were investigated with several techniques. As a result, the BIP-H exhibited higher glass transition temperature, tensile strength, and tensile modulus than did BIP-S. The combination of two kinds of antioxidants resulted in good performance that prevented yellowing at high temperature and exposure to sunlight. 3D pattern finished cotton fabrics coated with BIP-S showed a higher transparency than that of non-coated cotton fabrics. Both cotton fabrics coated with BIP-S and those coated with BIP-H showed excellent repellency to alkali solution.