초록 ▼

Thermoplastic elastomers useful in formulating certain pressure-sensitive hot-melt adhesives are normally very tacky and thus are hard to handle. The present invention relates to a method of eliminating problems due to this tackiness by dusting the elastomer pellets with a friable polymer resin havi

Thermoplastic elastomers useful in formulating certain pressure-sensitive hot-melt adhesives are normally very tacky and thus are hard to handle. The present invention relates to a method of eliminating problems due to this tackiness by dusting the elastomer pellets with a friable polymer resin having a ring and ball softening point of at least 95°C. Selection of a polymer resin which is normally used in adhesive formulations allows one to overcome tackiness without having detrimental effects on the ultimate adhesive properties of formulations based on the elastomer.

대표청구항 ▼

A method of preparing free-flowing elastomeric polymer pellets consisting essentially of coating the surface of a strand of normally tacky elastomeric polymer with up to 2% by weight of a dusting agent and then cutting the strands into pellets; said dusting agent consisting of a friable polymer havi

A method of preparing free-flowing elastomeric polymer pellets consisting essentially of coating the surface of a strand of normally tacky elastomeric polymer with up to 2% by weight of a dusting agent and then cutting the strands into pellets; said dusting agent consisting of a friable polymer having a ball and ring softening point of at least 95°C. and normally used in compounding of adhesives based on said elastomeric polymer, whereby the dusting agent does not interfere with the normal use of the pellets in adhesive formulations.