Shielding coatings are applied to polymer substrates for selective metallization of the substrates. The shielding coatings include a primer component and a hydrophobic top coat. The primer is first applied to the polymer substrate followed by application of the top coat component. The shielding coating is then selectively etched to form an outline of a desired current pattern. A catalyst is applied to the patterned polymer substrate followed by electroless metal plating in the etched portions. The portions of the polymer substrate which contain the shielding coating inhibit electroless metal plating. The primers contain polyamines and the top coat contains hydrophobic alky organic compounds.

A composition for recyclate verification is produced by adding a predetermined quantity of one or more verification compounds to a base resin. Each of the verification compounds is thermally stable over a range of temperatures that includes the maximum processing temperature of the base resin but is less than the degradation temperature of the base resin. In some embodiments, a thermoplastic material provided for verification as a recyclate is analyzed to detect the presence (and, optionally, the loading level) of one or more verification compounds associated with the base resin of the thermoplastic material. In some embodiments, a computer-implemented method for recyclate verification is performed using a computer program product. In some embodiments, a thermoplastic material verified as a recyclate is heated to drive off the verification compound(s), then a known quantity of the verification compound(s) is added to the recyclate, which is then blended with virgin base resin material.

A process for application of metal on a substrate surface comprises applying a mixture of a solvent, a polymerizable monomer, and a photoinitiator on a substrate surface, wherein the photoinitiator does not form two phases together with the monomer and the solvent, i.e. it forms an amorphous mixture without any crystals. The monomer is able to polymerize to a polymer comprising at least one carboxylic group. Thereafter the solvent is evaporated. Polymerization is induced by irradiating the applied dried mixture. Ions are applied and reduced to metal and thereafter further metal can be deposited. The method can be used in industrial processes, both 2D and 3D surfaces can be coated with metal. Materials sensitive to standard grafting chemicals and/or polymers containing halogen atoms can be coated.

A method of recycling and reusing a tap water-soluble sulfonated polymer material from a structural component made using an additive manufacturing process comprises dissolving the structural component in water to disperse the sulfonated polymer material into the water. The sulfonated polymer material is precipitated from the water and recovered; then dried and reformed into a form suitable for subsequent use as a consumable feedstock in a subsequent additive manufacturing process.

A method of recycling plastic e-waste material and products made from recycled e-waste involves one or more separate streams of different plastic waste which are reduced to small granular form, blended together or separately or used separately before insertion into a compounder which reduces the small sized plastic particles to a semi-molten emulsion. The emulsion is placed in a press and molded to a final product shape. The final product is finished and inspected. The products from the recycled plastic e-waste can be used as substrates on road signs.

Provided is a method for preparing a recycled ABS resin including: preparing an extrusion feed including an acrylonitrile butadiene styrene (ABS) base resin including polyurethane and a metal carboxylic acid salt or a hydrate of the metal carboxylic acid salt, and supplying the extrusion feed to an extruder to perform a depolymerization reaction of the polyurethane and extrude the extrusion feed, wherein a master index (M) value satisfies 0.2M0.6.

Described herein are composite materials composed of ceramic particles coated with a surfactant incorporated within a polymer matrix, methods of making same, filaments composed of the same, and articles printed using the filaments. The composite materials and articles described herein have desirable electronic and thermal properties for use in radio frequency (RF) and millimeter wave devices and demonstrate reliable performance at elevated humidity levels.

The present disclosure provides a polymeric composition including a thermoplastic polymer and an ionic liquid compound, wherein the ionic liquid compound improves the melt flow rate of the polymeric composition. The present disclosure also provides a method of preparing a polymeric composition with improved melt flow rate by mixing an ionic liquid compound with a thermoplastic polymer to obtain the polymeric composition. In some aspects, the polymeric composition includes a recycled polymer.

The thermoplastic ABS molding composition comprises at least one thermoplastic copolymer matrix A, at least one ABS-copolymer B, optionally one or more polymers C, and one or more additives D, wherein, in the thermoplastic ABS molding composition, in particular after thermoplastic processing by extrusion, thermoforming and/or injection molding, the grafted rubber of component B is present in form of small particles.

Polymeric compositions, methods of making the compositions, and composites, such as computer chassis containing the compositions are described. The polymeric compositions can contain 10 wt. % to 70 wt. % of a post-consumer recycled information technology and telecommunications equipment (ITE) waste derived PC/ABS blend; 5 wt. % to 30 wt. % of a filler, wherein at least a portion of the fillers are obtained from a post-consumer recycled ITE waste; and 5 wt. % to 30 wt. % of a flame retardant obtained from a renewable source. In some instances, the polymeric compositions have a total recycled content of 50 wt. % to 90 wt. %.