| 摘要 |
PURPOSE:To obtain the title composition improved in the surface smoothness and lubricity of the obtained molding (such as a film or a fiber), by mixing a polyester with a linear organopolysiloxane having a specified functional group on one molecular end with the other end being blocked. CONSTITUTION:0.01-30 pts.wt. linear organopolysiloxane ot an MW of 500-100000, represented by the formula [wherein RA-B are each a (fluorinated) alkyl or a phenyl, RC is an alkyl, n is 3-1000, and X is an organic group having two functional groups selected from among OH, COOH, NH2 and those derived therefrom or having one epoxy group], having said organic group X on one molecular end and blocked at the other molecular end is added to 100 pts.wt. polyester obtained from a dicarboxylic acid (derivative) and a glycol at an arbitrary point of time (e.g., during polycondensation or during kneading with an extruder). |
