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    • 2. 发明专利
    • DE69425429D1
    • 2000-09-07
    • DE69425429
    • 1994-02-24
    • IDEMITSU KOSAN CO
    • TAZAKI TOSHINORIMACHIDA SHUJI
    • C08F4/62C08F8/04C08F297/06C08F297/08C08F210/16C08F8/00
    • A propylene block copolymer composed of 50-95 wt.% of a specified propylene polymer block (A) comprising either propylene units only or a combination of propylene units with at most 4 wt.% of C2-C8 olefin units and 50-5 wt.% of an ethylene-propylene copolymer block (B) containing 20-90 wt.% of ethylene units, wherein at least either block (A) or block (B) contains 0.001-15.0 wt.% of diolefinic units and which has a reduced viscosity of 0.01-30 dl/g in 0.05 g/dl of decalin at 135 DEG C; a process for producing the same; and a product of hydrogenation thereof and a modified copolymer produced by introducing functional groups into at least 5 mole % of the unsaturations of the above block copolymer. The above block copolymer is suppressed in gel formation, has an excellent balance between rigidity and impact resistance and a good moldability, and contains unsaturations available for modification. The above modified copolymer is rich in adhesion, printability, hydrophilicity, capability of polymer modification, antistatic effect, and flame retardancy.
    • 5. 发明专利
    • DE69117457D1
    • 1996-04-04
    • DE69117457
    • 1991-12-05
    • IDEMITSU KOSAN CO
    • TANI NORIYUKIMACHIDA SHUJITAZAKI TOSHINORI
    • B32B27/06C08F257/02
    • There is provided a process for producing a styrenic graft copolymer which comprises coplymerizing a styrenic monomer and a styrenic monomer having a hydrocarbon radical with an unsaturated bond in the presence of a catalyst comprising as primary ingredient (A) a transition metal compound and (B) a contact product of an organoaluminum compound and a condensation agent or (C) a compound which produces an ionic complex by reacting with the above-mentioned transition metal compound and subsequently graft polymerizing an ethylenically unsaturated monomer onto the resultant styrenic copolymer. The above-described styrenic graft copolymer is greatly improved in terms of compatibility, adhesivity, coatability and wettability while preserving heat resistance and chemical resistance thereof, and thus effective as a variety of constructional materials and compatibilizing agents. Furthermore, the composition or multi-layer material comprising the above-mentioned styrenic graft copolymer is widely utilized in a variety of application field including film, sheet, especially stampable sheet, container, packaging material, automobile parts, electrical and electronic parts, etc.