Paraffin wax compositions and rubber compositions into which paraffin wax compositions are incorporated
AssigneeBridgestone Corporation
InventorsNobumasa Ikeda, Masanori Tajima
Life of this patent
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Abstract
A paraffin wax composition comprises straight-chain saturated hydrocarbons, wherein the content of each of the straight-chain hydrocarbons having the number of carbons being 22 to 44, respectively, is not less than 2% by weight relative to the entire straight-chain saturated hydrocarbons. A rubber composition is also disclosed, which comprises a rubber and this paraffin wax composition, wherein 1 to 10 parts by weight of the above paraffin wax composition is blended relative to 100 parts by weight of a diene rubber.
Claims4
A paraffin wax composition comprising straight-chain saturated hydrocarbons,
- wherein the content of each of the straight-chain saturated hydrocarbons having 31 to 44 carbon atoms, respectively, is not less than 2% by weight and the total amount of straight-chain saturated hydrocarbons having 31-44 carbon atoms is at least 28%,
- and further wherein the content of each of the straight-chain saturated hydrocarbons having 22 to 30 carbon atoms, respectively, is not less than 4% by weight, and the total amount of straight-chain saturated hydrocarbons having 22 to 30 carbon atoms is at least 36%, relative to the entire straight-chain saturated hydrocarbons.
A rubber composition comprising a diene rubber and a paraffin wax composition, said paraffin wax composition comprising straight-chain saturated hydrocarbons,
- in which the content of each of the straight-chain saturated hydrocarbons having 31 to 44 carbon atoms, respectively, is not less than 2% by weight, and the total amount of straight-chain saturated hydrocarbons having 31-44 carbon atoms is at least 28%,
- and further in which the content of each of the straight-chain saturated hydrocarbons having 22 to 30 carbon atoms, respectively, is not less than 4% by weight, and the total amount of straight-chain saturated hydrocarbons, having 22 to 30 carbon atoms is at least 36, relative to the entire straight-chain saturated hydrocarbons, wherein 1 to 10 parts by weight of the above paraffin wax composition is blended relative to 100 parts by weight of said diene rubber.
Dependencies are inferred from the claim text.