In this paper, the details and preliminary results of the investigations were presented for the use of copolymers of polyamides containing disulfide linkages, sulfhydryl groups and sulfonic acid groups as antistatic agents for nylon 66 filaments. Copoly hexamethylene (3,3'-dithiodipropio-adipo) amide (copoly-HDA) was synthesized from 3,3'-dithiodipropionyl chloride, adipoyl chloride and hexamethylene diamine by an interficial polycondensation method. Conditions for synthesis of the copoly-HDA were discussed. The copoly-HDA and nylon 66 chips were mined in several component ratios and then spun by wet spinning method. The resulting filaments were treated with reducing and oxidizing agents in order to make hygroscopic filaments, Electro-specific resistance of those and nylon 66 filaments were measured in order to discuss their antistaticity. Antistatic effects of copoly-HDA were recognized on those filaments at room temperature, which could be explained by assuming that the disulfide arrangements were made pseudo-conjugated double bond.

The rheological equations for steady-state isothermal spinning of polymer melts are solved by assuming the melts to be viscoelastic material. Spinning velocity equations are derived and discussed for the special limiting cases. When the relaxation time of polymer is small compared with the time for filament flow, the velocity equation becomes expontial, but when the imposed stress is large compared with the modulus, the velocity-spinning way relation becomes nearly linear. Simpler relation was also derived and discussed by assuming radial and shear stresses are nogligible compared with the axial stress.

The effect of PH on the equilibrium adsorption, the rate of adsorption and the dye hydrolysis was studied in buffer solution and with the results the effect of these factors on the reactivity of a monochlorotriazinyl reactive dye with silk fibroin was discussed. The maximum amount of fixed dye on silk fibroin was obtained in neutral condition, in which the dye-fibre bonds are relatively stable and the active dye concentration around the functional groups is high. The rate constant of fixation k' could be calculated and the PH dependency of it showed some what different trend to that of some amino acid residues which are the most important groups reacting with reactive dyes.

The effect of resin treatment, varying in knitted density, use of cotton or wool blended yarn and increase in setting temperature, on the pilling characteristics of acrylic knitted fabric is inverstigated. The treatment of acrylic knitted fabric with anti-static agent is found to be effective in increasing the pilling resistance and to decrease the abrasion resistance. The considerable reduction in the weight of pills is noticed with demised knitted fabrics in spite of increase in the number of pills. It is shown that acrylic fabrics knitted from cotont or wool blened yarn have a slight pilling tendency while those knitted from all acrylic yarn fabrics get more pills as the pilling test time is prolonged. An increase in setting temperature is shown to be uneffective in decreasing pills althought the number of Pills is slightly decreased.