Thermoplastic elastomer composition and medical rubber product

摘要

The present invention aims to provide a dynamically-crosslinked thermoplastic elastomer composition that can provide a molded product exhibiting low compression set especially in the case of being cooled under stress. The present invention relates to a thermoplastic elastomer composition, including a dynamically-crosslinked butyl rubber and a thermoplastic resin; and having a thermoplastic resin content of not more than 8% by mass. The dynamically-crosslinked butyl rubber is preferably a halogen-containing butyl rubber.

主权项

1. A process for preparing a thermoplastic elastomer composition comprising a dynamically-crosslinked butyl rubber and a thermoplastic resin, which process comprises
dynamically crosslinking 100 parts by mass of a butyl rubber, in the presence of
a thermoplastic resin having a content of not more than 6% by mass,0.1 to 10 parts by mass of a triazine derivative, and0 to 80 parts by mass of a softener, thereby reducing the amount of the thermoplastic resin and the softener.