Zefran, of the Dow Chemical Co., is an acrylonitrile polymerized with vinyl pyrrolidone or other dye-receptive monomer. The fiber has a molecular structure called a nitrile alloy, with a continuous polyacrylonitrile backbone with close-packed hydrophilic groups which hold the dye molecules. It resists heat to 490°F (254°C). Fostacryl, of the Foster Grant Co., Inc., is a crystal-clear styrene-acrylonitrile copolymer used for molding such articles as dinnerware and food containers. Acrylonitrile-styrene copolymers are also combine with alkyl-substituted phenolic resins to produce hard, glossy, flexible coatings. Itaconic acid, or methylene succinic acid, CH2:CCH(COOH)2, is also polymerized with acrylonitrile to produce fibers. When this acid is polymerized with styrene it produces transparent plastics of good optical properties. For jet aircraft tires an extremely wear-resistant rubber is made of acrylonitrile-butadiene with an organometalic catalyst that has alternating groups in the copolymer.
Acrylonitrile reacts with cellulose to form a wide range of resins from soluble eithers useful for textile finishes to tough, resistant materials useful for fibers. It can be reacted directly with cotton to improve the fiber. Krilium, of the Monsanto Co., and Agrilon, of the Borden Chemical Co., are sodium salts of acrylonitrile used as soil conditioners. They are more efficient than peat moss.
Applications:
· Juicer covers
· Electric fans
· Battery cases
· Musical instruments
· Other transparent components
SAN general
SAN-GF Glass fiber 20~30%
