Prodn. of bonding agent for solid objects

摘要

The resistance to hydrocarbons of a bonding agent is improved by dispersion over 10-60 mins. in the rubbery mass at 100-200 deg.C, of the resin constits. and a special resin consisting of a sequenced co-polyether-ester-amide. This is a polycondensn. prod. of an alpha-omega dicarboxylic (co)polyamide of mol.wt. 300-15000, in amt. of 90-5 wt.%, with an aliphatic alpha-omega di-hydroxyl polyoxyalkylene cpd. of mol.wt. 100-6000, in amt. of 10-95 wt.%. The polycondensn. prod. has a softening pt. of 80-210 deg.C and viscosity in molten state of 10-20000 Pa at 200 deg.C.