Dope additive and fiber
OwnerToshihiro TANAKA, Kazuki NAESHIROinventors
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Abstract
To provide an additive and the like. An additive is configured by a polyurethane (A) having a value of V2/V1 of 1 or more when: a viscosity of when dissolved in dimethylacetamide (DMAc) at 20% by mass at 40° C. is set to be V1; and a viscosity after 24 hours have additionally elapsed at 40° C. after dissolution is set to be V2.
Claims37
A dope additive comprised of a polyurethane (A), wherein, when:
- a viscosity when dissolved in 20% by mass dimethylacetamide at 40° C. is set to be V1;
- and a viscosity after 24 hours have additionally elapsed at 40° C. after dissolution is set to be V2, the value of V2/V1 value is 1 or more.
An additive, which is a dope additive and comprised of the polyurethane (A) having the amino group at a proportion of 0.1 to 50 meq/kg.
An additive, which is a dope additive and comprised of the polyurethane (A) having the amino group at a proportion of 1 to 30 meq/kg.
Dependencies are inferred from the claim text.