A novel class of segmented copolymers, dimethyldiphenylpolysiloxane/poly (oxytetramethylene)-polyurea (PSPEU), was synthesized from α, ω-bis (γ-aminopropyl)
A discussion of the mechanism of nylon 6, 6 dissolving process using CaCl<sub>2</sub>/MeOH as the sol-vent is presented. The calcium chloride forms a complex co