Title:
POLYOLEFIN RESIN MATERIAL, LAYERED PRODUCT COMPRISING THE SAME, PROCESS FOR PRODUCING THE SAME, AND MOLDED OBJECT OBTAINED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2003/031512
Kind Code:
A1
Abstract:
A polyolefin resin material which is excellent in adhesion strength, tear strength, impact resistance, low−temperature heat sealability, transparency, and moldability and is suitable for use in the field of polyolefin containers&sol packaging materials for foods, medical materials, and electronic materials. The polyolefin resin material comprises: (A) 100 to 10 wt.% ethylene (co)polymer in which (a) the density is 0.86 to 0.97 g&sol cm3, (b) the MFR is 0.01 to 200 g&sol 10 min, (c) the molecular−weight distribution is 1.5 to 4.5, (d) the components soluble in o−dichlorobenzene at 23°C have a weight−average molecular weight of 8,000 to 30,000, and (e) the (co)polymer satisfies the relationship T75−T25≤−670xd&plus 644 (1), wherein T75−T25 is the difference between the temperature T25 at which 25% of the whole (co)polymer dissolves away and the temperature T75 at which 75% of the whole (co)polymer dissolves away and d is the density, T25 and T75 being determined from the integral elution curve obtained from an elution temperature−elution amount curve obtained by the continuously temperature−rising elution fractionation method (TREF)&semi and (B) 0 to 90 wt.% other polyolefin resin. It contains substantially no additives.
Inventors:
WAKAYAMA MASAHIRO (JP)
KASAHARA HIROSHI (JP)
SAITOH YOSHIMASA (JP)
KAGAYA IPPEI (JP)
SAKO KANJIRO (JP)
KAMIYA TATSUYUKI (JP)
ORIKASA YUICHI (JP)
KASAHARA HIROSHI (JP)
SAITOH YOSHIMASA (JP)
KAGAYA IPPEI (JP)
SAKO KANJIRO (JP)
KAMIYA TATSUYUKI (JP)
ORIKASA YUICHI (JP)
Application Number:
PCT/JP2002/002654
Publication Date:
April 17, 2003
Filing Date:
March 20, 2002
Export Citation:
Assignee:
JAPAN POLYOLEFINS CO LTD (JP)
WAKAYAMA MASAHIRO (JP)
KASAHARA HIROSHI (JP)
SAITOH YOSHIMASA (JP)
KAGAYA IPPEI (JP)
SAKO KANJIRO (JP)
KAMIYA TATSUYUKI (JP)
ORIKASA YUICHI (JP)
WAKAYAMA MASAHIRO (JP)
KASAHARA HIROSHI (JP)
SAITOH YOSHIMASA (JP)
KAGAYA IPPEI (JP)
SAKO KANJIRO (JP)
KAMIYA TATSUYUKI (JP)
ORIKASA YUICHI (JP)
International Classes:
C08L23/04; C08F210/16; C08L23/02; (IPC1-7): C08L23/04; B32B27/32; B65D77/06; C08F10/02
Domestic Patent References:
| WO1999065957A1 | 1999-12-23 |
Foreign References:
| JP2001191452A | 2001-07-17 | |||
| JP2000326463A | 2000-11-28 | |||
| JP2000327860A | 2000-11-28 |
Attorney, Agent or Firm:
Shiga, Masatake (2-3-1 Yaesu Chuo-ku, Tokyo, JP)
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