Polyurethane elastic fiber
OwnerToshihiro TANAKA, Noboru WATANABEinventors
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Abstract
To provide a highly durable polyurethane elastic fiber having high stress during shrinkage, that is, recovery stress, as well as excellent antioxidative properties. A polyurethane elastic fiber comprising a polyurethane having a polyether structure in its backbone and a nitrogen-containing aromatic compound, wherein the polyether structure is represented by the following general formula (1), and the polyurethane elastic fiber contains no less than 0.05% by mass to no more than 2.0% by mass of the nitrogen-containing aromatic compound Formula (I) (R1 is an alkylene group having 2 to 6 carbon atoms, R2 is an alkyl group having 1 to 2 carbon atoms, and l, m, and n satisfy 4≤n/(l+m+n)×100≤50)
Claims9
A polyurethane elastic fiber comprising a polyurethane having a polyether structure in its backbone and a nitrogen-containing aromatic compound, wherein
- the polyether structure is represented by the following general formula (1),
- and the polyurethane elastic fiber contains no less than 0.05% by mass to no more than 2.0% by mass of the nitrogen-containing aromatic compound
- (R1 is an alkylene group having 2 to 6 carbon atoms, R2 is an alkyl group having 1 to 2 carbon atoms,
- and l, m, and n satisfy 4≤n/(l+m+n)×100≤50).
An article comprising a polyurethane elastic fiber having a polyether structure in its backbone and a nitrogen-containing aromatic compound, wherein
- the polyether structure is represented by the following general formula (1),
- and the polyurethane elastic fiber contains no less than 0.05% by mass to no more than 2.0% by mass of the nitrogen-containing aromatic compound
- (R1 is an alkylene group having 2 to 6 carbon atoms, R2 is an alkyl group having 1 to 2 carbon atoms,
- and l, m, and n satisfy 4≤n/(+m+n)×100≤50).
Dependencies are inferred from the claim text.