Solutia Incorporated

Other

Mitsubishi Rayon Company, Limited

Gary J Capone

Hajime Itoh

Hiroshi Hosokawa

Yasuyuki Fujii

Yoshihiro Nishihara

Seizo Oishi

Naoto Ohsuga

Masako Iwamoto

C Wayne Emerson

Hiroaki Ohnishi

Charles W Emerson

Bruce Edward Wade

Danny W Carter

Henry Gook Chin

An acrylic fiber having cotton-like properties with modified, internal void structure and optical characteristics, the acrylic fiber comprising a BYK Gardner Luster (BYL) reflectance measurement of less than about 44.

Low density acrylic fiber

The present invention is directed to chitosan-containing acrylic fibers having a total chitosan content of 0.05 to 2% by weight and an extractable chitosan content of not less than 0.03% by weight to less than the total chitosan content. The antimicrobial activity of the chitosan-containing acrylic fibers of the present invention can persist for a long period of time and is not deteriorated even when subjected to posttreatments, such as dyeing and bleaching of fibers, and treatments in usual service environments of fiber products, such as washing and ironing.

Chitosan-containing acrylic fibers and process for preparing the same

Process of making chitosan-containing acrylic fibers

The present invention relates to a method for exchanging derivatizing agents onto ionic functional groups, preferably sulfate, sulfonate, and carboxylate functional groups, in a polymer, and then thereby holding these derivatizing agents in place by strong ionic bonds. The ionic functional groups are those currently used in industry to enhance dyeability, and therefore do not present a problem with textile treatments normally encountered in the industry. Polyacrylonitrile polymer is synthesized with an ionic comonomer to obtain a number of dye sites above that required for dying. The sodium or other cation that is ionically bound to the ionic comonomer, as well as the sulfonate and sulfate end groups, is then exchanged with a derivatizing agent. The preferred derivatizing agents comprise a quaternary ammonium compound. Protonated amines, such as tetramethyl ammonium quaternary salt, tetrabutyl ammonium quaternary salt, a quaternary ammonium salt of a dimethyl fatty acid amine, and the protonated primary amines contained in chitosan biopolymer, are successfully exchanged with the counterions on the available sulfate and sulfonate functional groups in acrylic polymers. The derivatizing agent imparts antimicrobial activity to the polymer and can improve rheological properties.

Polyacrylonitrile polymer treatment

An acrylic fiber exhibiting improved brightness and proccessability is disclosed. The fiber includes a synergistic combination of a delustrant and an optical brightener and is specifically useful in the manufacture of 'terry' knitted athletic socks.

Acrylic fiber with high optical brightness

A process for making acrylic fibers in which control of polymer composition and spin bath composition provide improved product properties.

Acrylonitrile filament process

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Decatur, AL, United States of America

Gary J Capone