The present invention provides a water-soluble film having high solubility in cold water and high extensibility. The present invention also provides a method for simply producing such a water-soluble film with particularly preferred features. The present invention relates to a water-soluble film including a grafted polymer and a water-soluble resin, and also relates to a water-soluble film including a grafted polymer. The present invention also relates to a method for producing a water-soluble film containing a grafted polymer and a water-soluble resin including mixing the grafted polymer and the water-soluble resin.

The invention relates to a method for preparing vinyl chloride graft copolymers by emulsion polymerization and to a method for preparing blends of such graft copolymers. The invention also relates to transparent molded articles prepared by using the graft copolymers according to the invention and their blends, respectively.

The invention relates to a method for preparing vinyl chloride graft copolymers by emulsion polymerization and to a method for preparing blends of such graft copolymers. The invention also relates to transparent molded articles prepared by using the graft copolymers according to the invention and their blends, respectively.

A thermoplastic starch composition acquired from compounding a mixture comprises starch-containing agricultural waste in 45 to 70% by weight of total composition that the agricultural waste contains starch content less than 50% in dry weight; thermoplastic synthetic polymer in 25 to 50% by weight of total composition; plasticizer in 1 to 10% by weight of total composition; and coupling agent in 1 to 5% by weight of total composition; wherein the compounding is performed at a first temperature which is higher than room temperature.

The invention relates to a thermoplastic molding composition which comprises at least one copolymer component made of styrene monomers and nitrile monomers, and also at least one graft copolymer based on an acrylate rubber. The invention also relates to thermoplastic moldings produced from the thermoplastic molding composition, and the use thereof.

Polymeric-based building materials are disclosed. The polymeric-based building materials can include opposing inner and outer surfaces, with a recessed portion on the inner surface that is positioned between a first contacting portion and a second contacting portion. The surface of the second contacting portion can be angled with respect to the surface of the first contacting portion.

Coated floors comprising (1) a flooring substrate, and (2) a solid coating of a Releasable SCC Polymer Composition which (i) is adjacent to the substrate, (ii) can be triggered by heat and (iii) comprises (a) a sidechain crystalline polymer (SCC polymer) which has an onset of melting temperature, T.sub.0, which is higher than any temperature to which the substrate will be exposed during normal use and a peak melting temperature (Tp) which is less than any temperature which will damage the substrate, preferably a Tp of at most 120 C. and (b) a matrix polymer.

A thermoplastic starch composition acquired from compounding a mixture comprising starch-containing agricultural byproducts in 45 to 70% by weight of total composition, the agricultural byproducts having a starch content less than 50% dry weight; thermoplastic synthetic polymer in 25 to 50% by weight of total composition; plasticizer in 1 to 10% by weight of total composition; and coupling agent in 1 to 5% by weight of total composition; the compounding performed at a first temperature which is higher than room temperature.

The invention relates to blends of vinyl chloride graft copolymers as well as to a method for preparing such vinyl chloride graft copolymers and their blends. The invention also relates to molded articles manufactured by using the blends according to the invention.

A method for manufacturing an optical film includes molding a sheet-shaped rubber-containing thermoplastic resin composition discharged in a molten state from a die outlet of an extruder by inserting the composition between a pair of smoothing rollers including an elastic roller, wherein a melt viscosity of the rubber-containing thermoplastic resin composition as measured at a temperature of the rubber-containing thermoplastic resin composition during the discharge from a die and a shear velocity of 122 sec.sup.1 is 600 Pa.Math.sec or more but 2000 Pa.Math.sec or less; a surface temperature of the elastic roller is Tg70 C. or higher but Tg20 C. or lower; and V/P is 5000 or less, wherein V represents a line velocity (m/min) and P represents a pressure applied by the elastic roller (kgf/cm).