Fibers comprising copolymers containing structures derived from 4,4 diamino diphenyl sulfone and a plurality of acid monomers and methods of making same
AssigneeE.I. du Pont de Nemours and Company
InventorVlodek Gabara
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Abstract
The invention concerns a fiber, obtainable by spinning a copolymer from the polymerization solution, derived from 4,4′diaminodiphenyl sulfone amine monomer and a plurality of acid monomers, wherein the plurality of acid monomers has 55 to 85 mole percent of the monomer containing a para-oriented aromatic group and 15 to 45 mole percent of the monomer containing a meta-oriented aromatic group; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments.
Claims8
A staple fiber having a macroscopically homogeneous body comprising a copolymer having a structure derived from the reaction of an amine monomer and a plurality of acid monomers, wherein
- i) the amine monomer is at least 80 mole percent 4,4′diaminodiphenyl sulfone;
- and
- ii) the plurality of acid monomers include those having a structure of
- Cl—CO—Ar1—CO—Cl & Cl—CO—Ar2—CO—Cl
- wherein the plurality of acid monomers has 55 to 85 mole percent of the monomer containing aromatic group Ar1 and 15 to 45 mole percent of the monomer containing the aromatic group Ar2;
- and
- wherein the aromatic group Ar1 is aromatic group having para-oriented linkages and the aromatic group Ar2 is a an aromatic group having meta-oriented linkages.
Dependencies are inferred from the claim text.