CYCLIC OLEFIN COPOLYMER - JSR CORPORATION

Title:

CYCLIC OLEFIN COPOLYMER

Document Type and Number:

Japanese Patent JP3945309

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To obtain a cyclic olefin copolymer improved in transparency, heat resistance and water resistance (low water absorption) by resolving the problems in conventional transparent resins and further improved in low birefringence and an improved mechanical property (toughness).
SOLUTION: The cyclic olefin copolymer has (A) a structural unit having a cyclic olefin skeleton with a specified structure, (B) a structural unit with an electron attractive unit (excepting the structural unit (A)), and (C) at least one structural unit selected from the group consisting of a structural unit of formula (2) (wherein, R5 and R6 are each independently hydrogen atom or a 1-20C alkyl and at least one of R5 and R6 is the 1-20C alkyl) and a structural unit of formula (3) (wherein, R7 and R8 are each independently hydrogen atom or a 1-20C alkyl and R9 is a 1-20C alkyl).

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Inventors:

Okiwa
Naoyuki Kawashima
Seiji Fukuhara
Yuichi Hashiguchi

Application Number:

JP2002139564A

Publication Date:

July 18, 2007

Filing Date:

May 15, 2002

Export Citation:

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Assignee:

JSR CORPORATION

International Classes:

C08F232/04; C08F216/18; C08F220/12; C08F222/40; (IPC1-7): C08F232/04; C08F216/18; C08F220/12; C08F222/40

Domestic Patent References:

JP2001200016A
JP2000230024A
JP10287713A
JP2001181323A
JP2004512396A

Attorney, Agent or Firm:

Shuji Iwamiya

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