The present invention relates to a process for producing a stretched molding which comprises stretching a straight chain random copolymer having:
a repeating unit (A) represented by the formula:
CH₂-CH₂
and a repeating unit (B) represented by the formula:
the proportion of said repeating unit (B) being 0.01 to 10 mol%; and
an intrinsic viscosity [η] as measured at 135°C in decalin of at least 5 dℓ/g.
A stretched molding obtained by the present invention has mechanical properties equivalent or superior to those of the conventional super high molecular weight polyethylene stretched molding and is excellent in adhesive properties, dyeability, printability and so on, and thus is greatly useful as an industrial material required to have high strength and further good adhesive properties and printability.
本发明涉及一种拉伸成型的生产工艺,该工艺包括拉伸直链无规共聚物,直链无规共聚物具有:
由以下式子表示的重复单元 (A)
CH₂-CH₂
和一个重复单元 (B),其代表式为:CH₂-CH₂:
所述重复单元(B)的比例为 0.01 至 10 摩尔%;以及
在 135°C 的
癸醛中测得的固有粘度[η]至少为 5 dℓ/g。
本发明得到的拉伸模塑物具有与传统
超高分子量聚乙烯拉伸模塑物同等或更优越的机械性能,并且在粘合性、染色性、印刷性等方面也非常出色,因此作为要求具有高强度、进一步良好的粘合性和印刷性的工业材料非常有用。