FIELD: chemistry.
SUBSTANCE: invention relates to compositions for hermetic seals for containers, as well as to hermetic seals for containers for carbonated drinks, which contain said compositions and which are designed such that, their cap can be easily turned. Composition for sealing crown caps contains from 20 to 70 wt % thermoplastic rubber, which is a linear copolymer of 70/30 butadiene and styrene, polymerised in solution, and from 80 to 30 wt % thermoplastic polymer. Thermoplastic polymer is chosen from a group consisting of polypropylene and a mixture of polyethylene and ethylene vinyl acetate copolymer.
EFFECT: improved holding of internal pressure, easier removal of hermetic seal when using the container.
18 cl, 10 ex
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