Partially hydrolyzed chlorosulfonated polyolefin elastomers
AssigneeDuPont Performance Elastomers L.L.C.
InventorRoyce E. Ennis
Life of this patent
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Abstract
At least partially hydrolyzed chlorosulfonated polyolefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared from low density polyethylene or from linear ethylene/alpha-olefin copolymer base resins having a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) less than 3.5.
Claims11
A chlorosulfonated polyolefin composition comprising at least one chlorosulfonated polyolefin having 0.5 to 10 weight percent chlorine, 0.25 to 5 weight percent sulfur, based on total weight of said chlorosulfonated polyolefin, and a plurality of —SO3H groups, and wherein said chlorosulfonated polyolefin is produced from a polyolefin base resin selected from the group consisting of i) a low density polyethylene and ii) a linear copolymer comprising copolymerized units of 45 to 80 weight percent ethylene and 55 to 20 weight percent, based on total weight of said linear copolymer, of an alpha-olefin having 3 to 20 carbon atoms, said linear olefin copolymer having a ratio of Mw/Mn less than 3.5.
Dependencies are inferred from the claim text.