The present invention relates to a pile fabric including an acrylic synthetic fiber at a napped portion, the acrylic synthetic fiber is obtained by spinning a spinning solution including 90 to 99 parts by weight of a polymer A and 1 to 10 parts by weight of a polymer B. The polymer A is a polymer obtained by polymerizing a composition A including 40 to 97 wt % of acrylonitrile, 0 to 5 wt % of a sulfonic acid-containing monomer and 3 to 60 wt % of another copolymerizable monomer. The polymer B is obtained by polymerizing a composition B including 0 to 70 wt % of acrylonitrile, 20 to 90 wt % of acrylic ester and 10 to 40 wt % of a sulfonic acid-containing monomer, and the polymer B is a polymer to be dissolved in a mixed solvent composed of water and at least one organic solvent selected from the group consisting of N,N-dimethylformamide, N,N-dimethylacetamide, dimethylsulfoxide and acetone. The acrylic synthetic fiber forming the napped portion is dyed or discharge-printed at least partially, and the dyed or discharge-printed acrylic synthetic fiber has an apparent specific gravity in a range of 0.8 to 1.1.

The present invention relates to a pile fabric including an acrylic synthetic fiber at a napped portion, the acrylic synthetic fiber is obtained by spinning a spinning solution including 90 to 99 parts by weight of a polymer A and 1 to 10 parts by weight of a polymer B. The polymer A is a polymer obtained by polymerizing a composition A including 40 to 97 wt % of acrylonitrile, 0 to 5 wt % of a sulfonic acid-containing monomer and 3 to 60 wt % of another copolymerizable monomer. The polymer B is obtained by polymerizing a composition B including 0 to 70 wt % of acrylonitrile, 20 to 90 wt % of acrylic ester and 10 to 40 wt % of a sulfonic acid-containing monomer, and the polymer B is a polymer to be dissolved in a mixed solvent composed of water and at least one organic solvent selected from the group consisting of N,N-dimethylformamide, N,N-dimethylacetamide, dimethylsulfoxide and acetone. The acrylic synthetic fiber forming the napped portion is dyed or discharge-printed at least partially, and the dyed or discharge-printed acrylic synthetic fiber has an apparent specific gravity in a range of 0.8 to 1.1.

In one embodiment is provided a polymer blend of poly(vinyl acetate) (PVAc) and poly(acrylic acid) (PAA), wherein the poly(vinylacetate) is present in an amount ranging between about 20 wt % and about 80 wt %, and poly(acrylic acid) is present in an amount ranging between about 80 wt % and about 20 wt %, based on the total weight of the blend. In another embodiment is provided a fiber produced from this polymer blend, and which has cells therein. In another embodiment is provided a flavorant release material comprising the porous fiber disclosed herein, and one or more flavorants disposed in a longitudinally extending core within the fiber. In another embodiment is provided a polymer fiber membrane containing a hollow, porous fiber formed from the polymer blend disclosed herein. In another embodiment is provided a filter containing the fiber described herein. In another embodiment is provided a process for producing the fibers disclosed herein by addition of the polymers to an extruder or blender, and extruding or melt spinning the mixture into a fiber containing cells therein.

In one embodiment is provided a polymer blend of poly(vinyl acetate) (PVAc) and poly(acrylic acid) (PAA), wherein the poly(vinylacetate) is present in an amount ranging between about 20 wt % and about 80 wt %, and poly(acrylic acid) is present in an amount ranging between about 80 wt % and about 20 wt %, based on the total weight of the blend. In another embodiment is provided a fiber produced from this polymer blend, and which has cells therein. In another embodiment is provided a flavorant release material comprising the porous fiber disclosed herein, and one or more flavorants disposed in a longitudinally extending core within the fiber. In another embodiment is provided a polymer fiber membrane containing a hollow, porous fiber formed from the polymer blend disclosed herein. In another embodiment is provided a filter containing the fiber described herein. In another embodiment is provided a process for producing the fibers disclosed herein by addition of the polymers to an extruder or blender, and extruding or melt spinning the mixture into a fiber containing cells therein.

The present invention relates to electrospun fibers comprising i) a hydrophilic polymer that is soluble in a first solvent, ii) a bioadhesive substance that is slightly soluble in said first solvent, iii) optionally, a drug substance.

The present invention relates to electrospun fibers comprising i) a hydrophilic polymer that is soluble in a first solvent, ii) a bioadhesive substance that is slightly soluble in said first solvent, iii) optionally, a drug substance.

In one embodiment is provided a polymer blend of poly(vinyl acetate) (PVAc) and poly(acrylic acid) (PAA), wherein the poly(vinylacetate) is present in an amount ranging between about 20 wt % and about 80 wt %, and poly(acrylic acid) is present in an amount ranging between about 80 wt % and about 20 wt %, based on the total weight of the blend. In another embodiment is provided a fiber produced from this polymer blend, and which has cells therein. In another embodiment is provided a flavorant release material comprising the porous fiber disclosed herein, and one or more flavorants disposed in a longitudinally extending core within the fiber. In another embodiment is provided a polymer fiber membrane containing a hollow, porous fiber formed from the polymer blend disclosed herein. In another embodiment is provided a filter containing the fiber described herein. In another embodiment is provided a process for producing the fibers disclosed herein by addition of the polymers to an extruder or blender, and extruding or melt spinning the mixture into a fiber containing cells therein.

In one embodiment is provided a polymer blend of poly(vinyl acetate) (PVAc) and poly(acrylic acid) (PAA), wherein the poly(vinylacetate) is present in an amount ranging between about 20 wt % and about 80 wt %, and poly(acrylic acid) is present in an amount ranging between about 80 wt % and about 20 wt %, based on the total weight of the blend. In another embodiment is provided a fiber produced from this polymer blend, and which has cells therein. In another embodiment is provided a flavorant release material comprising the porous fiber disclosed herein, and one or more flavorants disposed in a longitudinally extending core within the fiber. In another embodiment is provided a polymer fiber membrane containing a hollow, porous fiber formed from the polymer blend disclosed herein. In another embodiment is provided a filter containing the fiber described herein. In another embodiment is provided a process for producing the fibers disclosed herein by addition of the polymers to an extruder or blender, and extruding or melt spinning the mixture into a fiber containing cells therein.

A composition for producing a fiber, containing (A) a polymer compound containing a unit structure represented by the formula (1) and a unit structure represented by the formula (2), (B) a crosslinking agent, (C) an acid compound, and (D) a solvent

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wherein each symbol in the formulas (1) and (2) is as described in the DESCRIPTION.

An electrospun nanofibrous layer may include an exemplary polymer scaffold made of at least one of nylon, polyester, polyvinyl alcohol, chitosan, and acrylic, an amine-terminated dendritic polymer that may be attached to and distributed within the exemplary polymer scaffold. An exemplary amine-terminated dendritic polymer may include at least one of polyamidoamine, polypropylene imine, and polyethylene imine. An electrospun nanofibrous layer may further include an exemplary volatile aromatic compound that may be encapsulated within the amine-terminated dendritic polymer.