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US 2020/0048446 A1Published application
Rubber composition for torsional damper and torsional damper
AssigneeNok Corporation
InventorTetsuro NEGAMI
Life of this patent
Estimating the term…
Abstract
A rubber composition for a torsional damper has (A) a minimum value of tan δ at −30° C. to 120° C. of 0.140 or more, (B) a ratio of tan δ at −30° C. to tan δ at 60° C. of 3.5 or less, and (C) a ratio of E′ at −30° C. to E′ at 60° C. of 21 or less.
Claims6
A rubber composition for a torsional damper, having:
- (A) a minimum value of tan δ at −30° C. to 120° C. of 0.140 or more;
- (B) a ratio of tan δ at −30° C. to tan δ at 60° C. of 3.5 or less;
- and
- (C) a ratio of E′ at −30° C. to E′ at 60° C. of 21 or less.
1 more element
A torsional damper comprising a rubber composition for a torsional damper, the rubber composition having:
- (A) a minimum value of tan δ at −30° C. to 120° C. of 0.140 or more;
- (B) a ratio of tan δ at −30° C. to tan δ at 60° C. of 3.5 or less;
- and
- (C) a ratio of E′ at −30° C. to E′ at 60° C. of 21 or less.
1 more element
Dependencies are inferred from the claim text.