Thermoplastic resin composition

Abstract

Abstract PURPOSE:To improve heat resistance, rigidity, resistance to chemicals and solvent, dielectric properties, dimensional stability, impact strength, and thermal aging properties by compounding a flexible polymer with a specific cyclic olefin random copolymer. CONSTITUTION:60-5 pts.wt. flexible polymer having a glass transition point of 0 deg.C or lower, an intrinsic viscosity of 0.01-10dl/g, and a degree of crystallization of 0-10% (e.g. an ethylene-propylene random copolymer) is compounded with 40-95wt.% random copolymer having an intrinsic viscosity of 0.05-10dl/g and a softening point of 70 deg.C or higher and comprising ethylene and a cyclic olefin selected from the group consisting of cyclic olefins of formula I (wherein (l) is 0 or a positive integer; R<1> to R<18> are each H, halogen, or a hydrocarbon group provided that R<15> to R<18> may combine with each other to form a mono- or polycyclic group optionally having a double bond; and R<15> may combine with R<16> and R<11> with R<12> each to form an alkylidene group), formula II, formula III (wherein (m) and (n) are each (l); and R<1> to R<18> are each H, halogen, or a hydrocarbon group provided that R<9> may combine with R<18> and R<11> with R<12> each to form an alkylidene group), and formula IV (wherein (p) is 0 or a positive integer; and R<1> to R<15> are each H, halogen, or an aliph. or arom. hydrocarbon group provided that R<5> or R<6> may combine with R<9> or R<7> directly or through 1-3C alkylene group).

Inventors

• 👤 Yozo Yamamoto
• 👤 陽造 山本

Bibliographic Details