Thermoplastic elastomer composition with high resistance to thermal deterioration
AssigneeMitsui Chemicals, Inc.
InventorsYuichi Itoh, Akira Uchiyama
Life of this patent
Estimating the term…
Abstract
This invention relates to a thermoplastic elastomer composition which includes and comprises 10 to 60 parts by weight of a polyolefin (A), 30 to 87 parts by weight of a crosslinked rubber (B), 3 to 50 parts by weight of a softening agent (C) [the total amount of (A), (B) and (C) being 100 parts by weight] and 0.02 to 0.3 part by weight of a phenolic heat stabilizer (D) and which retains an elongation value at break by 80% or more, after aging for 500 hours in an air oven of 130° C., of the value before the aging; and relates to a manufacturing method thereof.
Claims15
A thermoplastic elastomer composition which comprises 10 to 60 parts by weight of a polyolefin (A), 30 to 87 parts by weight of a crosslinked rubber (B), 3 to 50 parts by weight of a softening agent (C) wherein the total amount of (A), (B) and (C) is 100 parts by weight and 0.02 to 0.3 part by weight of a phenolic heat stabilizer (D) and which retains an elongation value at break by 80% or more, after aging for 500 hours in an air oven to 130° C., of the value before the aging, wherein the polyolefin (A) is selected from the group consisting of isotactic polyolefins and syndiotactic polyolefins.
Dependencies are inferred from the claim text.