公开(公告)号：EP1992658A4

公开(公告)日：2011-04-06

申请号：EP07708398

申请日：2007-02-15

Applicant: MITSUI CHEMICALS INC ,  PRIME POLYMER CO LTD

Inventor： FUKUSHI KEIKO ,  IWAMASA KENJI ,  OKAMOTO MASAHIKO

IPC: C08K5/13 ,  C08F10/02 ,  C08F297/08 ,  C08L23/00

CPC classification number: C08K5/13 ,  C08F110/02 ,  C08F210/16 ,  C08F297/08 ,  C08F297/083 ,  C08L23/06 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/13 ,  C08F210/14

Abstract: Disclosed is an environmental stress cracking resistance improver that is composed of a compound that has in the molecule thereof a structure represented by the following general formula (I) and a molecular weight of from 200 to 2,000. Also disclosed are a method for improving environmental stress cracking resistance properties that uses the environmental stress cracking resistance improver, and a resin composition with improved environmental stress cracking resistance properties that contains the environmental stress cracking resistance improver. In the above general formula, R 1 and R 2 are each a hydrocarbon group having 1 to 6 carbon atoms, and may be the same or different from each other.

公开(公告)号：EP2105464A4

公开(公告)日：2011-01-12

申请号：EP08703237

申请日：2008-01-15

Applicant: PRIME POLYMER CO LTD ,  MITSUI CHEMICALS INC

Inventor： HIRASE YOSHIYUKI ,  IWAMASA KENJI

IPC: C08L23/04 ,  B29C49/00 ,  B29C49/22 ,  B29K23/00 ,  B29L22/00 ,  B65D1/00

CPC classification number: B29C49/0005 ,  B29C49/04 ,  B29C49/22 ,  B29K2023/06 ,  B29K2023/086 ,  B29K2995/0083 ,  B29K2995/0089 ,  B29L2031/7172 ,  C08L23/04 ,  C08L2205/02 ,  C08L2314/00 ,  Y10T428/1352 ,  C08L2666/02

公开(公告)号：EP1632505A4

公开(公告)日：2007-07-25

申请号：EP04733978

申请日：2004-05-19

Applicant: MITSUI CHEMICALS INC

Inventor： MATSUURA SADAHIKO ,  MATSUKAWA NAOTO ,  MITANI MAKOTO ,  SAITO JUNJI ,  FUJITA TERUNORI ,  TOHI YASUSHI ,  ENDO KOJI ,  IWAMASA KENJI ,  FUKUSHI KEIKO

IPC: C08F210/02 ,  B65D1/00 ,  C08F4/645 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/16 ,  F16L9/12

CPC classification number: C08F210/16 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65927 ,  C08F10/00 ,  C08F4/65904 ,  C08F4/64048 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/11 ,  C08F2500/20 ,  C08F2500/14 ,  C08F2500/04

Abstract: An ethylene/C3-10 α-olefin copolymer which has (i) a melt flow rate MFR (190°C, 2.16 kg) of 0.01 to 10 g/10min, (ii) a melt tension MT satisfying MT≥3.2×MFR-0.55, (iii) a flow activation energy Ea satisfying Ea

公开(公告)号：EP1992649A4

公开(公告)日：2009-04-22

申请号：EP07714199

申请日：2007-02-14

Applicant: MITSUI CHEMICALS INC ,  PRIME POLYMER CO LTD

Inventor： FUKUSHI KEIKO ,  IWAMASA KENJI ,  OKAMOTO MASAHIKO

IPC: C08F10/02 ,  B65D1/00 ,  C08L23/04 ,  C08L23/06

CPC classification number: C08F210/16 ,  C08L23/06 ,  C08L23/0815 ,  C08L2203/10 ,  Y10T428/1397 ,  C08L2666/06 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/13 ,  C08F2500/12 ,  C08F2500/07

Abstract: Disclosed is an ethylene resin which satisfies all of the following requirements [a] to [c]: [a] the environmental stress cracking resistance (ESCR) T as measured at 50˚C in accordance with ASTM-D-1693 is 500 hours or longer when the flexural modulus is 1000 to 1500 MPa and 100 hours or longer when the flexural modulus is 1500 to 2000 MPa; [b] the melt tension as measured at 190˚C is 50 (mN) or greater; and [c] the crack speed under melt drawing is 90 (m/min) or less. The ethylene resin is excellent in strength and moldability and can be used suitably for a blow-molded article (a hollow molded article).

公开(公告)号：EP1788006A4

公开(公告)日：2008-07-30

申请号：EP05780409

申请日：2005-08-12

Applicant: MITSUI CHEMICALS INC

Inventor： OKAMOTO MASAHIKO ,  KASAI TETSUJI ,  TOHI YASUSHI ,  ENDO KOJI ,  OTSUZUKI SHIRO ,  AKASHI TAKAHIRO ,  IWAMASA KENJI ,  HIRASE YOSHIYUKI ,  FUKUSHI KEIKO ,  NAGANO SHINICHI

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65927 ,  C08F210/08 ,  C08F2500/13 ,  C08F2500/19 ,  C08F2500/11 ,  C08F2500/07 ,  C08F210/14

Abstract: An ethylene polymer which contains 0.02-1.50 mol% structural units derived from a C6-10 α-olefin and has a density of 945 to 975 kg/m3 and which satisfies both of the following requirements [1] and [2]. The ethylene polymer is excellent in flowability and moldability and gives a molding having excellent mechanical strength. [1] In CFC, all the components having a molecular weight of 100,000 or higher are eluted at temperatures not lower than 85°C. [2] The components eluted at temperatures not higher than 80°C account for up to 5% of all the components eluted in CFC.