The present invention discloses a method of enabling the easy separation of labels, including wrap around labels and sleeve labels, particularly shrink sleeve labels, from containers during recycling through the use of a specially formulated coating to be applied in the seam area. The coatings ensure proper bonding, and shrink properties, of the labels, and have been designed to help de-bonding of the seam in a hot caustic wash step, or a solvent wash step. The method does not rely on floatation separation and therefore may be applied to any container/label material combination regardless of their specific gravity differences.

Processing reinforcing fiber products to recover reinforcing fibers by removing other material, such fiber sizing material and/or matrix material from the reinforcing fibers. The processing includes cosolvent treating the reinforcing fiber product with a cosolvent composition including a normally-liquid first solvent portion and a normally-gaseous second solvent portion under conditions of temperature and pressure at which the cosolvent composition is in the form of a single fluid phase that is a liquid or a supercritical fluid. The processing may be performed in a continuous manner to recover the continuous reinforcing fibers in a continuous form.

The invention relates to a process and an installation to produce a monovinylaromatic polymer (3) comprising post-consumer recycled polystyrene (PCR-PS) wherein the process comprises the steps of mixing the PCR-PS (5) and the monovinylaromatic monomer (7) within a dissolver (9) to dissolve the PCR-PS (5) in the monovinylaromatic monomer (7) so as to produce a polymerization mixture (13); and a step of filtering the polymerization mixture (13) that includes continuously redirecting at least a part of the stream of the filtered polymerization mixture (17) back to the dissolver (9) and mixing it with the polymerization mixture (13) so as to continuously reduce the content of insoluble material in the polymerization mixture (13) contained in the dissolver (9).

To provide a flame retardant resin composition having excellent flame retardancy and excellent resin physical properties.

There is provided a flame retardant resin composition, including: an aromatic polycarbonate resin; an inorganic filler; a phosphate ester flame retardant; an organic sulfonic acid flame retardant; a drip preventing agent; and a polyorganosiloxane-containing graft copolymer, in which a content of the aromatic polycarbonate resin is 40 to 95 pts.mass to 5 to 60 pts.mass of the inorganic filler, and a content of the phosphate ester flame retardant, a content of the organic sulfonic acid flame retardant, a content of the drip preventing agent, and a content of the polyorganosiloxane-containing graft copolymer are respectively 1 to 30 pts.mass, 0.01 to 2.5 pts.mass, 0.05 to 1.5 pts.mass, and 0 to 10 pts.mass to the total 100 pts.mass of the aromatic polycarbonate resin and the inorganic filler.

The invention concerns a method for decoloring of a textile material, the method comprising the steps of: providing a textile material; providing an alkaline solution containing one or more anionic polyelectrolytes; treating the textile material in the alkaline solution during a treatment period; and recovering at least some of the textile material from the alkaline solution.

A method for causing used tires to recycle themselves involves chopping used tires to create a feedstock, placing the feedstock within a recycling vessel able to withstand heat and pressure, introducing a caustic agent which will isolate and neutralize or precipitate hazardous substances such as carcinogens and heavy metals, introducing a non-aliphatic hydrocarbon supercritical reactant, raising the interior of the recycling vessel to a desired temperature and pressure to cause the supercritical reactant to enter a supercritical state and effuse into the feedstock where it chemically reacts with the used tire feedstock to release hydrocarbons and other materials from the used tire feedstock, and precipitously dropping pressure within the recycling vessel so that the supercritical reactant exits the used tire feedstock so quickly that it mechanically breaks the used tire feedstock material apart. Temperature within the recycling vessel can be increased by inductively heating the used tire feedstock. Hydrocarbon vapors and liquids which exit the used tire feedstock can be used to fuel a generator which provides electricity to heating by electrical induction. The hydrocarbon vapors and liquids can also be combusted to heat the recycling vessel or to preheat and dewater the used tire feedstock. Other than heavy metal contaminants and carcinogens, the used tire material can be re-used in new products.

Method of treating complex films, comprising at least a first single sheet of a polymer, preferably PET, a second single sheet of a polymer, preferably PE, and at least one layer of adhesive, preferably EVA or acrylic. The sheets are in flake form and are separated by subjecting them to a first stirring bath in hot water with at least one dicarboxylic acid and at least one fatty acid, preferably oxalic acid and oleic acid; plus a second stirring bath with a caustic agent, preferably caustic soda, and a surfactant. The PE and PET films are separated by at least one densifying bath. The PET films are then treated by means of a stirring bath, a drying silo and a foreign particle separation machine. After each bath, except between the two densifying baths, the flakes are passed through a centrifuge.

The invention provides a deinking method including a step of peeling off and removing, from a plastic substrate having an ink layer, the ink layer by using a deinking agent that contains (a) 20 mass % or more of a water-soluble solvent and (b) 0.1 mass % to 10 mass % of an inorganic base. According to the invention, it is possible to provide a deinking method that can easily peel off an ink layer printed on a plastic substrate, a deinking agent that can be used in the deinking method, and a plastic substrate recovery method using the same.

A method for manufacturing a carbon fiber is provided which involves: (1) immersing a carbon fiber composite material (CFC) in an acidic aqueous solution to elute at least a part of a resin component of the CFC, to thereby obtain a substantially fibrous product; and (2) immersing the substantially fibrous product obtained in step (1) in an alkaline aqueous solution to elute at least a part of a resin component of the substantially fibrous product, to thereby obtain a fibrous product. A method for manufacturing a carbon fiber reinforced resin composition is provided which involves manufacturing a carbon fiber by the above method and manufacturing a carbon fiber reinforced resin composition using the resulting carbon fiber. Using these methods, it is possible to recover and recycle a carbon fiber from a carbon fiber composite material (CFC) at a low cost without deteriorating the carbon fiber.

A method for separating and recovering a layered film laminated and adhered with a reactive adhesive, the method including a step 1 of immersing the layered film in an alkaline solution while stirring the layered film with heating at 20? C. to 90? C. or ultrasonically vibrating the layered film and a step 2 of recovering separated single-layered films that constitute the respective layers of the layered film. The reactive adhesive is preferably a reactive adhesive containing a polyisocyanate composition and a polyol composition and more preferably a reactive adhesive containing a polyisocyanate composition, a polyol composition, and a compound having an acidic group.