Patent application number | Description | Published |
20110045251 | GAS-BARRIER FILM AND PROCESS FOR PRODUCING THE SAME - Provided is a gas barrier film including a layer of a resin composition (C) on at least one side of a substrate (D), wherein the resin composition (C) contains a water soluble or water dispersible polymer (A) and a swellable inorganic layered silicate (B), where the swellable inorganic layered silicate (B) satisfying expressions (1) and (2) below is used. 11.0≧D≧2.0 μm (1), σ≧1.8 μm (2), wherein D and a are a logarithmic average particle diameter of the swellable inorganic layered silicate (B) measured by laser diffraction and standard deviation of a particle size distribution thereof, respectively. This provides a gas barrier film including a resin composition layer, with a swellable inorganic layered silicate dispersed therein, having an extremely excellent gas barrier property and a method of producing a multilayer barrier film having the resin composition layer with extremely less irregularities on a surface thereof. | 02-24-2011 |
20110091734 | RESIN COMPOSITION AND MULTILAYER STRUCTURE USING SAME - A resin composition, comprising: apolyolefin (A); a saponified ethylene-vinyl acetate copolymer (EVOH) (B) having an ethylene content of 20 to 65 mol % and having a degree of saponification of vinyl acetate units of 96% or more; a higher fatty acid metal salt (C) having 8 to 22 carbon atoms; a conjugated polyene compound (D) having a boiling point of 20° C. or higher; an ethylene-vinyl acetate copolymer (E); and a saponified ethylene-vinyl acetate copolymer (F) having an ethylene content of 68 to 98 mol % and having a degree of saponification of vinyl acetate units of 200 or more, wherein the mass ratio (A:B) of the polyolefin (A) and the EVOH (B) is 60:40 to 99.9:0.1, the amount of the higher fatty acid metal salts (C) is in the range of 0.0001 to 10 parts by mass per 100 parts by mass of the total of the polyolefin (A) and the EVOH (B), the amount of conjugated polyene compound (D) is in the range of 0.000001 to 1 part by mass, and the total amount of the ethylene-vinyl acetate copolymer (E) and the saponified ethylene-vinyl acetate copolymer (F) is 0.3 part by mass or more. This enables improvement of poor appearance of a molded article caused by insufficient dispersion of the EVOH (B) at the time of melt molding a resin composition comprising the polyolefin (A) and the EVOH (B). | 04-21-2011 |
20120009431 | RESIN COMPOSITION AND MULTILAYERED STRUCTURE USING THE SAME - A resin composition comprising: a polyolefin (A); a saponified ethylene-vinyl acetate copolymer (B) having an ethylene content of 20 to 65 mol % and having a degree of saponification of vinyl acetate units of 96% or more; a higher fatty acid metal salt (C) having 8 to 22 carbon atoms; and a conjugated polyene compound (D) having a boiling point of 20° C. or higher; wherein the mass ratio (A:B) of the polyolefin (A) and the saponified ethylene-vinyl acetate copolymer (B) is 60:40 to 99.9:0.1, the amount of the higher fatty acid metal salts (C) is in the range of 0.0001 to 10 parts by mass per 100 parts by mass of the total of the polyolefin (A) and the saponified ethylene-vinyl acetate copolymer (B), and the amount of conjugated polyene compound (D) is in the range of 0.000001 to 1 part by mass per 100 parts by mass of the total of the polyolefin (A) and the saponified ethylene-vinyl acetate copolymer (B). This enables suppression of formation of aggregations at a micro-scale level, which serves to improve the dispersibility of EVOH. As a result, the occurrence of poor appearance such as wavy patterns on the molded article surface caused by flow anomalies due to the aggregates is suppressed, and thus, it is possible to obtain molded articles with good appearance. | 01-12-2012 |