【発明の名称】超高分子量ポリプロピレン延伸成形体およびその製造方法

Title:

【発明の名称】超高分子量ポリプロピレン延伸成形体およびその製造方法

Document Type and Number:

Japanese Patent JP3070694

Kind Code:

B2

Abstract:

A stretched molded article of ultra-high-molecular-weight polypropylene having an intrinsic viscosity [ eta ] of at least 4 dl/g, which has a degree of orientation of not less than 0.930 when obtained as a degree of orientation by an X-ray diffraction half-width, two or more of peak positions (melting points) within the temperature region of not lower than 180 DEG C when measured by a differential scanning calorimeter, and an amount of output energy of not less than 1 kgfm/g after 10-time repetition under a load of 50% of the breaking strength.

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Inventors:

Masahiro Kamiya
Kazuo Yagi
Akio Fukui
Masahiro Ogawa

Application Number:

JP13905791A

Publication Date:

July 31, 2000

Filing Date:

June 11, 1991

Export Citation:

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Assignee:

Mitsui Chemicals, Inc.
TOYOTA JIDOSHA KABUSHIKI KAISHA

International Classes:

B29C55/02; B29C55/00; D01F6/06; D01F6/46; B29K23/00; (IPC1-7): B29C55/00; D01F6/06; D01F6/46

Domestic Patent References:

JP3255144A
JP3260111A
JP4108108A

Attorney, Agent or Firm:

Shunichiro Suzuki

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