ADHESIVENESS-IMPARTING AGENT, ADHESIVENESS-IMPARTING AGENT FOR MEDICAL OR INDUSTRIAL APPLICATIONS, ADHESIVE/COHESIVE AGENT FOR MEDICAL OR INDUSTRIAL APPLICATIONS, ADHESIVE/COHESIVE SHEET FOR MEDIAL OR INDUSTRIAL APPLICATIONS, AND ADHESIVE TAPE FOR MEDIAL OR INDUSTRIAL APPLICATIONS

摘要

Provided is a resin acid ester-type of adhesiveness-imparting agent which has good compatibility with synthetic rubber elastomers, can have a decreased melt viscosity, and can impart excellent adhesion/cohesion properties. As the adhesiveness-imparting agent, an ester composition is used, which contains a resin acid ester represented by general formula (1) in an amount of 70 wt% or more and has a ratio of the proton integration value (S'NMR) in a range from 6 to 8 ppm to the total proton integration value (SNMR) in 1H-NMR spectra (i.e., an S'NMR/ SNMR ratio) of at least 6%.