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US 11,780,993 B2Granted
NBR composition for rubber laminated metal
AssigneeNok Corporation
InventorsIsao Watanabe, Daiki Takekawa
Life of this patent
Estimating the term…
Abstract
An NBR composition for rubber laminated metal having 1 to 3 parts by weight of sulfur and 1 to 15 parts by weight of a disulfide compound such as 4,4′-dithiodimorpholine or dithiodicaprolactam represented by the general formula RN—S—S—NR (wherein RN is a cyclic linking group formed together with the N atom bonded to the S atom), based on 100 parts by weight of NBR. The rubber composition that can improve the protrusion properties of a rubber layer when used for, for example, a gasket or a brake shim material that is a laminated composite metal laminated with another metal plate.
Claims2
A brake shim material, comprising:
- a vulcanizate layer of NBR composition laminated with a first metal plate and another metal plate;
- wherein the NBR composition comprises:
- 1 to 3 parts by weight of sulfur and
- 1 to 15 parts by weight of 4,4′-dithiodimorpholine or dithiodicaprolactam, based on 100 parts by weight of the NBR.
1 more element
Dependencies are inferred from the claim text.