Pre-treating a waste polyester material with dichloromethane (DCM) produces a purified polyester for reuse. The purified polyester can be recycled via any chemical or mechanical recycling process. Where the waste polyester material includes non-polyester contaminants, the DCM-treated polyester material produces a slurry that includes the DCM, a solid component that includes a polyester monomer product for reuse, and a waste liquid component where the non-polyester contaminants can be filtered from the top of the liquid component.

The present invention is directed at poly(ethylene terephthalate)-poly(ethylene naphthalate (PET-PEN) copolymer extruded sheet that is thermoformable and particularly suitable for medical device packaging, as well as medical device packaging made from such PET-PEN sheet material.

A method for manufacturing a polyester film for embossing is provided. A polyester composition is prepared from a recycled polyester material. The polyester composition includes a physically regenerated polyester resin and a chemically regenerated polyester resin. The polyester composition is melted and extruded so as to form a base layer. The base layer is stretched in a machine direction. A surface coating paste is coated onto the base layer. The base layer with the surface coating paste is heated and stretched in a transverse direction, such that the surface coating paste turns into a surface coating layer, and a polyester film for embossing is obtained.

Disclosed are foam articles comprising a thermoplastic, closed-cell foam having at least a first surface and comprising: (i) thermoplastic polymer cell walls comprising at least about 0.5% by weight of ethylene furanoate moieties and optionally one or more co-monomer moieties; (ii) blowing agent contained in at least a portion of said closed cells; and a material different than said thermoplastic, closed-cell foam attached to and/or integral with at least a portion of said first foam surface.

A method for preparing a biogenic guanidine complex, the method including: mixing dimethyl sulfoxide (DMSO) with water in a volume ratio thereof of 1:1 to yield a solvent DMSO-H.sub.2O; adding organic guanidine (G) and a compound MX.sub.2 in a molar ratio G/MX.sub.2=1:1 or 2:1 to the solvent DMSO-H.sub.2O, where the organic guanidine (G) is selected from arginine (Arg), guanidinoacetic acid (Gaa), creatine (Cra), creatinine (Cran), guanine (Gua), and agmatine (Agm); M represents Fe.sup.2+, Mg.sup.2+, or Zn.sup.2+; and X represents Cl.sup.−, CH.sub.3COO.sup.−, or CH.sub.3CH(OH)COO.sup.−; stirring the solvent DMSO-H.sub.2O containing the organic guanidine and the compound MX.sub.2; recycling the solvent DMSO-H.sub.2O through vacuum distillation and obtaining a solid; transferring the solid to a Buchner funnel, and washing the solid with deionized water and ethanol consecutively; and removing the deionized water and ethanol through vacuum filtration, and drying the solid. Biogenic guanidine complex can be used for production of Polyethylene terephthalate or Poly(ethylene isophthalate-co-terephthalate).

A keyboard having a total recycled and renewable content of equal to or greater than 35 wt. %, based on the total weight of the keyboard is described. The keyboard contains a key cap containing a mechanically recycled polycarbonate polymer or a chemically recycled cellulose based polymer, a pair of cross arms forming a scissor-shaped structure containing a polymeric composition containing 60 wt. % to 100 wt. % of a polyoxymethylene polymer, and 0 wt. % to 40 wt. % of a filler containing glass, and a back light module containing a renewably source polycarbonate polymer or a chemically recycled polyester polymer.

The embodiments relate to a polyester film, to a process for preparing the same, and to a process for regenerating a polyethylene terephthalate (PET) container using the same. The polyester film has excellent seaming characteristics and recyclability by virtue of controlled crystallinity, whereby clumping rarely occurs even if it is thermally treated for a long period of time in the regeneration process.

The present invention relates to: a liquid crystal polyester resin composition which contains a liquid crystal polyester resin and carbon fibers with a sizing agent; and a method for producing this liquid crystal polyester resin composition. The content of the carbon fibers with a sizing-agent is from 5 parts by mass to 120 parts by mass relative to 100 parts by mass of the liquid crystal polyester resin. With respect to the carbon fibers with a sizing-agent, the adhesion amount of the sizing agent with respect to the carbon fibers is from 0.1 parts by mass to 1.2 parts by mass relative to 100 parts by mass of the carbon fibers. If the carbon fibers with a sizing agent are heated from 25° C. to 400° C. in the air at a heating rate of 50° C./min, the mass loss rate within the range from 300° C. to 400° C. is less than 0.8% by mass.

The present invention relates to an injection molded product including a thermoplastic resin and a fibrous filler, wherein the thermoplastic resin includes at least 10% by mass of at least one selected from the group consisting of polypropylene and liquid crystal polyesters based on the total amount of the thermoplastic resin, the proportion of the fibrous filler having a fiber length of 1 mm or less in the injection molded product is 40% by mass or less based on the total amount of the fibrous filler, and a vertical-horizontal plane area of a test piece after ashing, which is determined by a specific ashing test, is at least 3.5 times the vertical-horizontal plane area of the test piece before ashing.

The present invention relates to a liquid crystal polyester resin molded article containing a thermoplastic resin comprising a liquid crystal polyester and a fibrous filler, in which the liquid crystal polyester resin molded article contain the fibrous filler in an amount of equal to or greater than 1 part by mass and equal to or smaller than 120 parts by mass with respect to 100 parts by mass of the thermoplastic resin, the proportion of the liquid crystal polyester with respect to 100 mass % of the thermoplastic resin is equal to or greater than 75 mass % and equal to or smaller than 100 mass %, and a length-weighted average fiber length of the fibrous filler is equal to or greater than 0.7 mm.