US  10,031,419 B2  216  215  L$_{3 }$ is the same as L$_{1 }$ in General Formula (Ca2) and the  specific examples and the preferable examples thereof are  also the same.  AR represents an aryl group. Rn represents an alkyl  group, a cycloalkyl group, or an aryl group. Rn and AR may  form a non-aromatic ring by bonding with each other.  Specific examples and preferable examples of AR and Rn  include the same as the specific examples and the preferable  examples of AR and Rn in the repeating unit which is  represented by General Formula (BZ) according to para› graphs [0101] to [0131] of JP2012-208447A and the con› tents thereof are included in the present specification.  The content ratio of a repeating unit which is represented  by General Formula (Ca2) described above in the resin (C)  (the total thereof in a case of containing a plurality of types)  is preferably 5 mo! % to 80 mo! % with respect to all of the  repeating units in the resin (C), more preferably 5 mo! % to  60 mo! %, and even more preferably 10 mo! % to 40 mo! %.  In General Formula (Ca3), Ra is the same as Ra in  General Formula (Ca2) and the specific examples and the  preferable examples thereof are also the same.  L$_{2 }$ is the same as L$_{1 }$ in General Formula (Ca2) and the  specific examples and the preferable examples thereof are  also the same.  R$_{14}$ , R 15 , and R $_{16 }$each independently represent an alkyl  group. Two of R$_{14 }$to R$_{16 }$may form a ring by linking with  each other.  An alkyl group ofR$_{14 }$to R$_{16 }$is preferably an alkyl group  with 1 to 4 carbon atoms such as a methyl group, an ethyl  group, an n-propyl group, an isopropyl group, an n-butyl  group, an isobutyl group, and at-butyl group.  Acycloalkyl group which is formed by two ofR$_{14 }$to R$_{16 }$ being bonded with each other is preferably a monocyclic  cycloalkyl group such as a cyclopentyl group and a cyclo› hexyl group, or a polycyclic cycloalkyl group such as a  norbornyl group, a tetracyclodecanyl group, a tetracyclodo- decanyl  group,  and adamantyl group. A monocyclic  cycloalkyl group with 5 or 6 carbon atoms is particularly  preferable.  -continued  Examples of one preferable aspect include an aspect in  which R$_{14 }$is a methyl group or an ethyl group and R$_{15 }$and 55  R$_{16 }$form the cycloalkyl group by bonding with each other.  Each of the groups may have a substituent group and  examples of the substituent group include a hydroxyl group,  a halogen atom (for example, a fluorine atom), an alkyl  group (with 1 to 4 carbon atoms), a cycloalkyl group (with  3 to 8 carbon atoms), an alkoxy group (with 1 to 4 carbon  atoms), a carboxyl group, an alkoxycarbonyl group (with 2  to 6 carbon atoms), and the like, and the number of carbon  atoms is preferably 8 or less.  In General Formula (Ca4), Ra is the same as Ra in 65  General Formula (Ca2) and the specific examples and the  preferable examples thereof are also the same.  Specific examples of the repeating unit which has an  acidic group (x) will be shown below; however, the present  The content of the repeating units which have an acidic  group (x) is preferably 10 mo! % or less with respect to all  of the repeating units in the resin (C) and more preferably 5  mo!% or less and the resin (C) preferably substantially does  not have a repeating unit which has an acidic group (x)  (ideally, the content of the repeating units which have an  acidic group (x) is 0 mo! % with respect to all of the  repeating units in the resin (C), that is, there is no repeating  unit which has an acidic group (x)).  Examples of a repeating unit which has an acidic group  (x) include a repeating unit where an acidic group is directly  bonded with a main chain of a resin such as a repeating unit  using an acrylic acid and a methacrylic acid, a repeating unit  where an acidic group is bonded with the main chain of a  resin via a linking group, or the like, and furthermore, by  using a polymerization initiator or a chain transfer agent  which has an acidic group during polymerization, introduc› tion is also possible to an end of a polymer chain, and any  of these cases is preferable. A repeating unit which has an  acidic group (x) may have at least one of a fluorine atom or  a silicone atom.  Examples of a preferable acidic group include a fluori› nated alcohol group (preferably hexafluoroisopropanol), a  sulfonimide group, a bis(alkyl carbonyl)methylene group.  Examples of acidic groups (x) include a phenolic  hydroxyl group, a carboxylic acidic group, a fluorinated  alcohol group, a sulfonic acidic group, a sulfonamide group,  a sulfonylimide group, an (alkyl sulfonyl) (alkyl carbonyl)  methylene group, an (alkyl sulfonyl) (alkyl carbonyl)imide  group, a bis(alkyl carbonyl)methylene group, a bis(alkyl  carbonyl) imide group, a bis(alkyl sulfonyl)methylene  group, a bis(alkyl sulfonyl)imide group, a tris(alkyl carbo- nyl)methylene group, a tris(alkyl sulfonyl)methylene group,  and the like.  (x) Acidic Groups  (y) Groups which have a Lactone Structure, Acid Anhy› dride Groups, or Acid Imide Groups  Furthermore, the resin (C) may have at least one group  selected from groups of (x) and (y) below.  In a case where the resin (C) has repeating units (Cal) to  (Ca4), the content (the total thereof in a case of containing  a plurality of types) is preferably 5 mo! % to 30 mo! % based  on all of the repeating units of the resin (C) and more  preferably 10 mo!% to 20 mo!%.  Examples of a non-aromatic ring which Rn and AR may  form by bonding with each other also include the same as the  specific examples and the preferable examples of the non› aromatic ring which Rn and AR may form by bonding with  each other in the repeating unit which is represented by  General Formula  (BZ)  according to paragraphs [0101] to  [0131] of JP2012-208447A and the contents thereof are  included in the present specification.  ~(° 