| 摘要 |
PURPOSE:The titled composition, containing cis-1,4-polyisoprene rubber, a tackifier resin, a polyethyleneimine oligomer, etc. having improved cohesive force, and capable of saving a solvent in the preparation thereof with a high solid content. CONSTITUTION:An adhesive mass composition prepared by incorporating 100pts.wt. solid cis-1,4-polyisoprene rubber with a cis-1,4-bond content >=88% having a molecular weight >=250,000, e.g. natural rubber, with 30-250pts.wt., preferably 50-150pts.wt., tackifier resin, e.g. rosin resin, and 0.05-10pts.wt., preferably 0.1-5pts.wt., polyethyleneimine oligomer or polyamide oligomer having a number-average molecular weight of 250-10,000 in a small amount of a solvent, e.g. isopentane. |
