A process for treating a recycled polyolefin with an emulsion comprising aqueous and organic phases, as well as the use of said process and/or emulsion for the at least partial removal of volatile organic compounds.

The present invention relates to a multilayer structure at least an outer layer and an inner layer which contain a polypropylene resin as a main component, a barrier resin layer containing an ethylene-vinyl alcohol copolymer as a main component, and a metal deposited layer containing aluminum as a main component; a packaging material for a retort therewith; a method for recovering the multilayer structure; and a recovered composition comprising a recovered material of the multilayer structure. There is provided a multilayer structure exhibiting excellent recyclability and excellent appearance, gas barrier ability and shading performance both before and after retorting treatment, and a packaging material for a retort therewith.

A door assembly. The door assembly may include at least one door panel and a door frame having a plurality of frame members including a header and a pair of side jambs. The invention may also be considered a frame member. The frame member may include a core; and a two-piece top piece adjoining the core to form a structural member. The core and the top piece may be a composite of cellulosic material and at least one other material. The door assembly may further include at least one adjacent panel. Also disclosed are door jamb frame members and mullion frame members.

Provided is a molded product in which blocking is reduced without impairing printability. Provided is a resin composition including: a polyolefin-based resin and an inorganic substance powder in a mass ratio of 50:50 to 10:90, in which the inorganic substance powder comprises calcium carbonate, the calcium carbonate comprises a first calcium carbonate having an average particle diameter of 0.5 μm or more and less than 2.0 μm measured by an air permeation method in accordance with JIS M-8511 and a second calcium carbonate having an average particle diameter of 2.0 μm or more and less than 9.0 μm measured by the air permeation method in accordance with JIS M-8511, and a mass ratio of the first calcium carbonate and the second calcium carbonate is 90:10 to 98:2.

A method for producing a foamed particle molded article provided with a skin, includes: forming a hollow molded article; filling a hollow part of the hollow molded article with polypropylene-based resin foamed particles; and heating and fusing the particles to each other. A melt elongation at 190° C. of the polypropylene-based resin forming the hollow molded article is 100 m/min or more. A half-crystallization time at 100° C. of the polypropylene-based resin is between 25 to 80 seconds. In heat flux differential scanning calorimetry, a melting peak temperature of the polypropylene-based resin is between 130 to 155° C., a partial heat of fusion at 140° C. or more of the polypropylene-based resin is between 20 to 50 J/g, and a ratio of the partial heat of fusion of the polypropylene-based resin to the total (partial heat of fusion/total heat of fusion) is between 0.2 to 0.8.

Methods of depolymerizing polyolefin-based material into useful petrochemical products using metal oxides and heat are described. The metal oxides improve the depolymerization reaction by decreasing the onset temperature for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

A novel method for producing an olefinic resin porous material is provided. The method for producing an olefinic resin porous material disclosed herein includes the steps of preparing a single phase in which an olefinic resin and a solvent are mixed each other, in a pressure-resistant container, introducing high pressure carbon dioxide into the pressure-resistant container, and releasing the pressure in the pressure-resistant container. In this method, introducing the high pressure carbon dioxide is carried out such that the pressure in the pressure-resistant container reaches 6 MPa or higher.

A polyolefin foam having improved light-transmittance comprises an average cell size of about 70 microns to about 500 microns; a total cell wall thickness to gauge ratio of between about 0.15 to about 0.55; a basis weight of about 0.00005 lb/in.sup.2 to about 0.00050 lb/in.sup.2; an L color solid value of about 95 to about 45; and a light transmittance of about 10% to about 50% according to JIS K 7361-1. A process for producing a polyolefin foam having improved light-transmittance comprises extruding a foamable sheet at a pressure from about 1 psi to about 55 psi, and foaming the foamable sheet with a foaming agent having an average diameter of about 10 to about 25 microns to produce a foam having a light transmittance of about 10% to about 50% according to JIS K 7361-1.

A gas barrier film includes a substrate containing polypropylene as a main component, a gas barrier layer on a first surface of the substrate, and a coating layer on the gas barrier layer. Infrared spectroscopy of the first surface indicates a peak intensity (I1) at 1360 to 1390 cm.sup.−1 and a peak intensity (I2) at 1440 to 1480 cm.sup.−1 in a ratio satisfying the formula: (I1)/I(2)≤1.65.

The present invention relates to a liquid composition comprising at least one dialkyl peroxide, in liquid form at ambient temperature, at a content comprised within a range of from 75 to 77% by weight relative to the total weight of the composition, and at least one mineral oil with viscosity greater than 15 mPa.Math.s, measured at a temperature of 10° C. and at a shear rate of 1000 s.sup.−1. Furthermore, the invention relates to the use of said composition to modify the melt rheology of the polypropylene.