Rubber composition
AssigneeBridgestone Corporation
InventorKentaro Kayashima
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Abstract
Provided is a rubber composition for a sealant which can be vulcanized at low temperature and is suitable in a retentivity, an adhering property, followability and a fluidity and which is excellent in a sealing property, wherein the rubber composition is prepared by blending 100 parts by mass of a rubber component containing butyl rubber and/or EPDM, 2 to 10 parts by mass of zinc oxide, 1 to 5 parts by mass of a thiuram vulcanization accelerator, satisfying the thiuram vulcanization accelerator: the zinc oxide=1:1 to 1:3, and 150 parts by mass or more of liquid polybutene or a process oil.
Claims17
A rubber composition prepared by blending:
- 100 parts by mass of a rubber component consisting of butyl rubber;
- 2 to 10 parts by mass of zinc oxide;
- 1 to 5 parts by mass of a thiuram vulcanization accelerator, satisfying the thiuram vulcanization accelerator:
- the zinc oxide =1:1 to 1:3;
- and
- 150 parts by mass or more of liquid polybutene or a process oil as a plasticizer, satisfying the thiuram vulcanization accelerator:
- the plasticizer =1:30 to 1:250,
- wherein the rubber component consists of bromobutyl rubber as the butyl rubber.
Dependencies are inferred from the claim text.