| 摘要 |
PURPOSE:To obtain a highly concentrated homogeneous solution of super-MW PE, by heating a specified super-MW PE and a solvent under agitation to wet the PE with the solvent and further heating the mixture under agitation. CONSTITUTION:100ptswt. super-MW PE (A) of an intrinsic viscosity of 5-30dl/g and 25-2,000ptswt. solvent (B) in which component A is soluble (e.g., n-nonane) are mixed together for at least 5min while the mixture is being heated so that it falls within a temperature range of from the lowest wetting temperature of the mixed system of components A and B to the m.p. of component A to wet component A with component B, and the mixture is heated under agitation to a temperature higher than the m.p. of component A to form a solution. EFFECT:It is possible to obtain a super-MW PE solution excellent in storage stability and moldability. USE:Filaments, tapes, and films. |
