Composition for insertion auxiliary tube, insertion auxiliary tube, set of insertion auxiliary tube and endoscope, endoscope apparatus, and method for producing insertion auxiliary tube

A combination of an insertion auxiliary tube and an endoscope, wherein the insertion auxiliary tube comprises:

• a tubular substrate a;
• and
• a layer b disposed on at least one of an inside or an outside of the tubular substrate a,
• wherein the layer b includes a polymer
• that includes at least one of an acrylic acid component, an acrylic acid ester component, an acrylamide component, or a styrene component as a constituent component, and has at least one of a hydroxy group, a carboxy group, an amino group, an isocyanate group, an oxazolinyl group, an epoxy group, a sulfanyl group, an azide group, a trialkoxysilyl group, or an acid anhydride structure in a molecule thereof,
• wherein the polymer includes a structural unit represented by formula (1) below and includes at least one of a structural unit represented by formula (2) below a structural unit represented by formula (3) below, or a structural unit represented by formula (4) below,
• wherein R1 to R6 represent a hydrogen atom or an organic group, L1 represents a single bond or a divalent linking group, and n1 represents 3 to 10,000,
• wherein R7 and Ra represent a hydrogen atom or an organic group,
• wherein R8, Rb1, and Rb2 represent a hydrogen atom or an organic group, and
• wherein R9 represents a hydrogen atom or an organic group, and Rc1 to Rc5 represent a hydrogen atom, a halogen atom, or an organic group, and
• wherein the insertion auxiliary tube is designed such that at least a part of the endoscope can be inserted through the insertion auxiliary tube and into a body cavity.