Abstract: Disclosed is a surface treatment agent for aqueous ink receiving media such as ink jet recording paper, printing sheets, coating materials and so on. The surface treatment agent according to the invention comprises a water-based resin and a carboxylic acid-containing hydrophilic sulfopolyester which provides superior adhesion and water resistance. With the superior adhesion properties, the surface treatment agent can be directly coated on substrates without the inconvenience of primer coating. The surface treatment agent of the invention is suitable for aqueous ink jet printing, coating, or recording media, particularly those of ink jet printers and ink jet plotters.

Abstract: A crosslinkable aqueous polyester-containing emulsion and a process for preparing the same. The emulsion is obtained by polymerizing unsaturated monomers of acrylic, using a crosslinkable, sulfonated polyester emulsifier having an acid number less than 80 mg KOH/g and an intrinsic viscosity greater than 0.1 dl/g as an emulsifier. The emulsion has the chemical characteristics of both polyester and acrylic resin, i.e. has low volatile organic compounds, good mechanical stability, and good storage stability. Since the emulsion is crosslinkable, a film formed by the emulsion has excellent adhesion, water and heat resistance. Thus, the emulsion is useful for coating and printing on Nylon, PET, OPP films, as well as for high performance industrial surface coating and adhesion for which good heat-, water-, and weather-resistance are required.

Abstract: A continuous manufacturing method is provided by extruding a composite optical fiber from two polymeric solutions containing two different monomers having different refractive indices, and then allowing the monomers to diffuse in a diffusion region such that the two monomers are diffused into each other before the optical fiber is hardened.

Abstract: The invention relates to a process for preparing gas separation membranes or modules. Membrane forming material is cast into a wet membrane which is wound into a spiral module. The spiral module is arranged in a closed circulating apparatus. Exchanging solvents or treating solutions are circulated through the circulating apparatus and the spiral module for an appropriate period of time. The module and circulating apparatus are purged until the membrane is dry, thus producing a gas separation membrane or module.