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US 9,809,670 B2Granted
Nitrile rubber and method of preparing the same
AssigneeLG Chem, Ltd.
InventorsSe Eun Lee, Dong Jo Ryu, Seon Hee Han, Jeong Heon Ahn, Hee Jung Jeon, Jeong Hoon Jo
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Abstract
Disclosed are nitrile rubber and a method of preparing the same. The nitrile rubber contributing to an excellent polymerization rate and vulcanization rate and having advantageous processability during vulcanization, and a method of preparing the same are disclosed.
Claims9
A nitrile rubber consisting of
- 18 to 29 wt % of at least one α,β-unsaturated nitrile monomer,
- 82 to 71 wt % of at least one conjugated diene monomer,
- 0.5 to 5 parts by weight of a fatty acid based on 100 parts by weight of the nitrile rubber;
- 0.01 to 10 parts by weight of alkyl thiol based on 100 parts by weight of the nitrile rubber;
- and
- 0.01 to 1 part by weight of oil-soluble peroxide based on 100 parts by weight of the nitrile rubber
- wherein the α,β-unsaturated nitrile monomer is at least one selected from acrylonitrile, methacrylonitrile, fumaronitrile, α-chloronitrile or α-cyanoethyl acrylonitrile,
- wherein the conjugated diene monomer is at least one selected from 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene, or isoprene,
- wherein ΔACN ranges from 2 to 3, and Mooney stress-relaxation rate (MSR) of the nitrile rubber measured with a shearing-disc viscometer according to ISO 289-4:2003 E at 100° C. is in the range of 0.35 to 0.383.
6 more elements
Dependencies are inferred from the claim text.