Patent ID: 7235612

Claim:
A method for manufacturing a polymer alloy, comprising the step of: melt blending at least two resins, which are miscible under a shear rate of 100 to 10000 sec −1 and are separated into phases under no shear flow, and making the resins miscible; and subsequently inducing spinodal decomposition and forming a co-continuous structure with a wavelength of concentration fluctuation of 0.001 to 0.5 μm or a dispersed structure with a distance between particles of 0.001 to 0.5 μm; wherein said at least two resins are selected from a combination of a polycarbonate (PC) and styrene-acrylonitrile copolymer, a combination of PC and polybutylene terephthalate (PBT), a combination of PC and polyethylene terephthalate, a combination of PC and polypropylene terephthalate, a combination of polystyrene and polyvinyl methyl ether, a combination of polystyrene and polyisoprene, a combination of polystyrene and polyphenylmethylsiloxane, a combination of ethylene-vinyl acetate copolymer and chlorinated polyethylene, a combination of poly(butyl acrylate) and chlorinated polyethylene, a combination of polymethyl methacrylate and styrene-acrylonitrile copolymer, a combination of polypropylene and ethylene-α-olefin copolymer, a combination of polypropylene and ethylene-polypropylene copolymer, a combination of polypropylene and styrene-butadiene copolymer, a combination of PC and styrene-butadiene copolymer, a combination of PC and the hydrogenation product of styrene-butadiene copolymer, a combination of PBT and styrene-butadiene copolymer, and a combination of PBT and the hydrogenation product of styrene-butadiene copolymer.