| 摘要 |
PURPOSE:To carry out coloring of the titled resin with a specified relation between a polyamide resin as the matrix and polytetramethylene adipamide resin kept in terms of the relative viscosity, without causing color non-uniformity and inadequate dispersion, so as to be good in balance of the physical properties and be suitable for automobile exterior trim parts, etc. CONSTITUTION:The objective coloring can be accomplished by mixing (A) a color concentrate composition prepared by homogeneously blending (i) as the matrix, a polyamide resin with a relative viscosity etac (determined at 30 deg.C using a 97% sulfuric acid solution containing 1g of said resin per 100ml of sulfuric acid) 2.5-4.5 and (ii) a colorant and (B) a polytetramethylene adipamide resin with a relative viscosity etaa so as to satisfy the relationship: etaa>etac. |
