Abstract: A method for recycling polyethylene terephthalate, including obtaining flakes of polyethylene terephthalate which are re-polymerized using heat and/or a chain extender combined with an anti-yellowing agent to yield an average molecular weight of at least 40,000 Da and a tunable intrinsic viscosity of approximately 0.5 dl/g to 0.8 dl/g. Polyethylene terephthalate pellets are produced having a color deviation of approximately 2.5 or less from the re-polymerized 100 percent post-consumer polyethylene terephthalate flakes as raw material for formation of polyethylene terephthalate products. When compared to available rPET bottles, CIELAB color values show indiscernible color differences with the high quality rPET produced. Consequently, the high-quality rPET pellets produced are capable manufacturing PET bottles with 100% PCR content and a high number of repeated recycling cycles.

Abstract: The present invention provides a germ-repellent silicone rubber comprising: a silicone rubber substrate and a germ-repellent active ingredient incorporated therein; wherein, the silicone rubber substrate includes polydimethylsiloxane; the germ-repellent active ingredients include poly(ethylene oxide) and silicone oil or their derivatives. The disclosed germ-repellent silicone rubber reduces the bacterial growth by inhibiting their adherence to the surface instead of killing them, does not contribute to super bacteria formation nor cause skin irritation.

Abstract: The present invention provides a non-porous, breathable and waterproof transparent plastic film on a plastic substrate and methods for fabricating the same. The film includes a thermoplastic polyester resin, an amphiphilic modifier having a hydrophilic segment that acts as a channel for water vapor transmission through the film connected to a hydrophobic segment that anchors the amphiphilic modifier to a portion of the polyurethane base resin and a compatibilizer. The resultant non-porous, breathable and waterproof transparent plastic film has a water vapor transmission rate (WVTR) or breathability of not less than 250 g/m2/24 hr according to ASTM E96B, and having at least 90% of the transmittance. They are also resistant to liquid penetration and micro-contaminants such as bacteria and virus, making them suitable for broad applications in medical, healthcare and food packaging industries.

Abstract: The present invention provides a non-porous, breathable and waterproof transparent elastomer film and methods for fabricating the same. The film includes a polyurethane (PU) and an amphiphilic modifier having a hydrophilic segment that acts as a channel for water vapor transmission through the film connected to a hydrophobic segment that anchors the amphiphilic modifier to a portion of the polyurethane base resin. The resultant non-porous, breathable and waterproof transparent elastomer film has a water vapor transmission rate (WVTR) or breathability of not less than 300 g/m2/24 hr according to ASTM E96B, and having at least 90% of the transmittance. The film is also resistant to liquid penetration and micro-contaminants such as bacteria and virus, making it suitable for broad applications in medical, healthcare and food packaging industries.

Abstract: A master batch composition for a weight-reduced plastic product includes a carrier resin, a core-shell foaming agent, and at least one lubricant. The core-shell foaming agent includes at least one outer polymeric shell and at least one inner foaming agent core. The outer polymeric shell encapsulates the inner foaming agent core. The inner foaming agent core includes alkane. The master batch composition is configured to be integrated into the weight-reduced plastic product by extrusion blow molding with a base plastic resin to create a foamed plastic having a foaming pore size from 10 to 80 ?m.

Abstract: A biocide-free, germ-repellent, crosslinked thermoset elastomer is provided. The elastomer base is a thermoset elastomer base selected from natural rubber, synthetic rubber, solid or liquid silicone rubber, or mixtures thereof. At least one germ-repelling modifier is selected from one or more of polyethylene glycol, a polyethylene glycol derivative, alcohol ethoxylate, a polymer including an isocyanate group, a polymer including an allyloxy group, siloxane, polyether modified silicone, polysorbates and copolymers or mixtures thereof. The germ-repelling modifier is permanently bonded to the thermoset elastomer base through a chemical reaction during extrusion, molding, or curing. This chemical reaction also crosslinks the thermoset elastomer base.

Abstract: The present invention provides a master batch composition for environmentally degrading conventional plastics including a carrier resin, at least one oxidative degradant, at least one nature biodegradable degradant and at least one foaming agent. The present invention also provides a plastic product which is environmentally degradable at a very low cost versus conventional bio-sourced plastics, and has broad applications for single-use disposable applications or for short-lived products that are discarded within two years of manufacture.

Abstract: The present invention provides a germ-repellent silicone rubber comprising: a silicone rubber substrate and a germ-repellent active ingredient incorporated therein; wherein, the silicone rubber substrate includes polydimethylsiloxane; the germ-repellent active ingredients include poly(ethylene oxide) and silicone oil or their derivatives. The disclosed germ-repellent silicone rubber reduces the bacterial growth by inhibiting their adherence to the surface instead of killing them, does not contribute to super bacteria formation nor cause skin irritation.

Abstract: The present invention provides a master batch composition for environmentally degrading conventional plastics including a carrier resin, at least one oxidative degradant, at least one nature biodegradable degradant and at least one foaming agent. The present invention also provides a plastic product which is environmentally degradable at a very low cost versus conventional bio-sourced plastics, and has broad applications for single-use disposable applications or for short-lived products that are discarded within two years of manufacture.

Abstract: The present invention provides a method for preparing a uniform-sized core-shell foaming agent includes: providing a SPG membrane having a pore size ranging approximately from 0.5 to 50 ?m; preparing a dispersed phase liquid including at least one shell material, at least one initiator, at least one cross-linker and at least one blowing agent; preparing a continuous phase liquid including at least one solvent, at least one salt, and at least one stabilizer; delivering a first pressurized gas to dispense the dispersed phase liquid to the continuous phase liquid through the SPG membrane; stirring until the uniform-sized emulsion being homogenous; initiating the polymerization of the uniform-sized emulsion to form microspheres; drying the microspheres to form the uniform-sized core shell foaming agent.

Abstract: The present invention provides a germ-repellent elastomer comprising: a base polymer selected from latex, synthetic rubber, thermoplastic elastomers, or copolymers or mixtures thereof; and at least one germ-repelling modifier selected from one or more polyethoxylated non-ionic surfactants such that a highly hydrophilic moiety is imparted from the at least one germ-repelling modifier to the base polymer either by physical or reaction extrusion.

Abstract: Disclosed herein is a monofilament bristle made of modified polytrimethylene terephthalate (PTT) composition, comprising: (a) 85-95 wt. % of a polytrimethylene terephthalate, and (b) 5-15 wt. % of a polyethylene-alkyl acrylate copolymer, having a flexural modulus of 2500 MPa or lower, a tensile modulus of 2600 MPa or lower, and an elongation at break % of 20% or lower.

Abstract: Disclosed herein is a monofilament bristle made of modified polytrimethylene terephthalate composition having s a flexural modulus of 2500 MPa or lower, measured according to ISO178:2001, a tensile modulus of 2600 MPa or lower, and an elongation at break % of about 20% or lower, measured respectively according to ISO527-2:1993, wherein the composition comprises: (a) 65-95 wt. % of at least a polytrimethylene terephthalate, and (b) 5-35 wt. % of at least a copolyether-ester having a Shore Hardness of 55 or higher measured according to ISO868. The invention also discloses brushes comprising the monofilament bristle.

Abstract: Disclosed is a method for preparing an antimicrobial composition for making filament for brushes. The method comprises steps in the following order: (1) mechanically pulverizing a polymer to obtain a polymer powder; (2) blending the polymer powder obtained in step (1) with an antimicrobial agent comprising phosphate, or glass, micropowder loaded with silver, zinc, or a silver-zinc composite.

Abstract: The present invention relates to a brush filament for industrial applications and a brush made with the same. The brush filament comprises a matrix resin, a hydrolytic stabilizer and/or an acid-absorbing agent, and an antioxidant. The brush filament of the invention is suitable for industrial applications, in particular, for grinding, polishing and cleaning of marbles and/or metals after they have been cut.