Patent ID: 8013090

Claim:
A film comprising: a norbornene compound addition polymer (I) essentially consisting of repeating units derived from norbornene compound monomers, wherein a sum of the following repeating unit (A1) and the following repeating unit (A2) is 70% by mol or more based on the total repeating units derived from norbornene compound monomers in the norbornene compound addition polymer (I); a ratio, [{(A1)+(A2)}/(B)], of a total molar number of a molar number of the repeating unit (A1) and a molar number of the repeating unit (A2) to a molar number of the following repeating unit (B) in the norbornene compound addition polymer (I) is in the range of from 70/30 to 100/0; a ratio, [(A1)/(A2)], of a molar number of the repeating unit (A1) to a molar number of the repeating unit (A2) in the norbornene compound addition polymer (I) is in the range of from 10/90 to 98/2; and a weight average molecular weight of the norbornene compound addition polymer (I) is from 50,000 to 1,000,000, or a norbornene compound addition polymer (II) essentially consisting of the following repeating unit (A1) and the following repeating unit (B), wherein a ratio, [(A1)/(B)], of a molar number of the repeating unit (A1) to a molar number of the repeating unit (B) in the norbornene compound addition polymer (II) is in the range of from 70/30 to 98/2; a weight average molecular weight of the norbornene compound addition polymer (II) is from 300,000 to 700,000; and a number average molecular weight of the norbornene compound addition polymer (II) is from 80,000 to 350,000: Repeating unit (A1): a repeating unit derived from a norbornene compound monomer consisting of carbon atoms and hydrogen atoms with all the carbon atoms being involved in constitution of a condensed ring skeleton, Repeating unit (A2): a repeating unit derived from a norbornene compound monomer having a structure where a part of hydrogen atoms of a norbornene compound monomer, consisting of carbon atoms and hydrogen atoms with all the carbon atoms being involved in constitution of a condensed ring skeleton, is substituted with only a hydrocarbon group having 2 or less carbon atoms, Repeating unit (B): a repeating unit derived from a norbornene compound monomer having a structure where a part of hydrogen atoms of a norbornene compound monomer, consisting of carbon atoms and hydrogen atoms with all the carbon atoms being involved in constitution of a condensed ring skeleton, is substituted with only a functional group having 2 or less carbon atoms, or substituted with only a functional group having 2 or less carbon atoms and a hydrocarbon group having 2 or less carbon atoms.