| 摘要 |
PROBLEM TO BE SOLVED: To provide a mouthguard composition high in durability and shock- absorption, and preventing gypsum from sticking to the fingers at the time of working of preparation/adjustment. SOLUTION: A mouse guard composition is made of the followings. a) Styrene block copolymer of 40 to 80 wt.%. b) Alicyclic saturated hydrocarbon resin and/or ester gum of 20 to 60 wt.%. c) Organopolysiloxane of 0.1 to 10 wt.% in which at least one out of the organic groups directly bonded with silicon atoms in one molecule is phenyl group, methyl styrene group, and alkyl group having 7 to 30 carbons.
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