Mar. 2, 2017  83  US 2017 /0059990 Al  6.  The radiation-sensitive or actinic ray-sensitive resin  composition according to claim  1,  represents a single bond or a divalent linking group, X  represents a hydrogen atom or an organic group, n  represents an integer of  1  or greater, and in a case where  n represents an integer of 2 or greater, a plurality of  R/s, a plurality ofR/s, and a plurality of X’s may be  the same as or different from each other, respectively.  9.  The radiation-sensitive or actinic ray-sensitive resin  composition according to claim  6,  7.  The radiation-sensitive or actinic ray-sensitive resin  composition according to claim  5,  10.  The radiation-sensitive or actinic ray-sensitive resin  composition according to claim  7,  8.  The radiation-sensitive or actinic ray-sensitive resin  composition according to claim  1,  in the formula, R$_{1 }$ and R$_{2 }$ each independently represent an  alkyl group, a cycloalkyl group, or an aryl group, B$_{2 }$ represents a single bond or a divalent linking group, X  represents a hydrogen atom or an organic group, n  represents an integer of  1  or greater, and in a case where  n represents an integer of 2 or greater, a plurality of  R/s, a plurality ofR/s, and a plurality of X’s may be  the same as or different from each other, respectively.  in the formula, R$_{1 }$ and R$_{2 }$ each independently represent an  alkyl group, a cycloalkyl group, or an aryl group, B$_{2 }$ wherein the repeating unit (b) is represented by the  following Formula (I-2),  in the formula, R$_{4 }$ represents a hydrogen atom, an organic  group, or a halogen atom, D$_{1 }$ represents a single bond  or a divalent linking group, Ar$_{2 }$ represents an aromatic  ring group, and m$_{1 }$ represents an integer of  1  or greater.  wherein the repeating unit (b) is represented by the  following Formula (I-2),  in the formula, R$_{1 }$ and R$_{2 }$ each independently represent an  alkyl group, a cycloalkyl group, or an aryl group, B$_{2 }$ represents a single bond or a divalent linking group, X  represents a hydrogen atom or an organic group, n  represents an integer of  1  or greater, and in a case where  n represents an integer of 2 or greater, a plurality of  R/s, a plurality ofR/s, and a plurality of X’s may be  the same as or different from each other, respectively.  wherein the polymer compound (A) further contains a  repeating unit ( c) that is represented by the following  Formula (II), and  in the formula, R$_{4 }$ represents a hydrogen atom, an organic  group, or a halogen atom, D$_{1 }$ represents a single bond  or a divalent linking group, Ar$_{2 }$ represents an aromatic  ring group, and m$_{1 }$ represents an integer of  1  or greater.  wherein the repeating unit (b) is represented by the  following Formula (I-2),  wherein the polymer compound (A) further contains a  repeating unit ( c) that is represented by the following  Formula (II), and  (II)  (II)  (1-2)  (1-2)  (1-2) 