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Aromatic-polyamide-fiber-polyester-fiber-blended-spun-yarn-fabric

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Aromatic polyamide fiber-polyester fiber-blended spun yarn fabric

Details

Inventors: Tanaka, Makoto; Nakayama, Genji; Takimoto, Noboru; Hosoyama, Koichi;
Assignee: Teijin Limited (Osaka, JP)
Primary Examiner: Cannon; James C.
Assistant Examiner:
Attorney, Agent or Firm: Burgess, Ryan & Wayne

A fiber fabric useful for flame-resistant garment is composed of yarns comprising a blend of 65 to 95% by weight of an aromatic polyamide fiber-containing fiber component with 5 to 40% by weight of a polyester fiber component; the aromatic polyamide fiber-containing fiber component comprising 50 to 100% by weight of aromatic polyamide fibers and 0 to 50% by weight of cellulose fibers and the fiber fabric having a limiting oxygen index of 26 or more.

DETAILED DESCRIPTION We claim: 1.
An aromatic polyamide fiber-polyester fiber-blended spun yarn fabric, comprising a fabric made of spun yarns consisting essentially of a uniform blend of: (A) 60 to 95% by weight of a first fiber component consisting of aromatic polyamide; and (B) 5 to 40% by weight of a second fiber component consisting of polyester fibers, the fabric having a limiting oxygen index of at least 26.
2.
The aromatic polyamide fiber-polyester fiber-blended spun yarn fabric as claimed in claim 1, wherein the aromatic polyamide fibers comprise 80 to 100% by weight of meta-type aramid fibers and 0 to 20% by weight of copolymerized para-type aramid fibers.
3.
The aromatic polyamide fiber-polyester fiber-blended spun yarn fabric as claimed in claim 2, wherein the meta-type aramid fibers are selected from: (a) polymetaphenyleneisophthalamide fibers and, (b) fibers comprising a mixture of polymetaphenyleneisophthalamide with at least one member selected from the group consisting of: (i) a polycondensation reaction product of an amine component comprising 35 to 100 molar % of xylenediamine and 0 to 65 molar % of at least one aromatic diamine with an acid component comprising at least one aromatic dicarboxylic acid; (ii) a polycondensation reaction product of a diamine component comprising at least one phenylenediamine compound having a phenylene group substituted with at least one alkyl group having 1 to 4 carbon atoms and at least one unsubstituted aromatic diamine compound, with an acid component comprising at least one aromatic dicarboxylic acid, and (iii) a polycondensation reaction product of a diamine component comprising 40 to 100 molar % of at least one penylenediamine compound having a phenylene group substituted with 1 to 4 halogen atoms and 0 to 60 molar % of at least one unsubstituted aromatic diamine compound, with an acid component comprising at least one aromatic dicarboxylic acid.
4.
The aromatic polyamide fiber-polyester fiber-blended spun yarn fabric as claimed in claim 2, wherein the copolymerized para-type aramid comprises recurring units of the formula (I): ##STR2## and recurring units of the formula (II): --NH--Ar

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