A respiratory protection composite facepiece is disclosed and includes a polymeric rigid facepiece body portion having a first surface and a second surface and a silicone sealing facepiece element chemically bonded at least one of the first surface or the second surface. The first and second surfaces can be opposing major surfaces. A second silicone element is chemically bonded to at least one of the first surface or the second surface. Methods of making the same are also disclosed.

An embodiment relates to a polymerizable composition for a plastic lens. The polymerizable composition for a plastic lens according to the embodiment comprises a nonhalogenated tin-based catalyst and a diketone compound as a low-temperature reaction rate controlling agent. Accordingly, the polymerizable composition has a more stable pot life so that the polymerization rate can be appropriately controlled, thereby improving the reactivity and the workability, and that the generation of bubbles are prevented, thereby improving the transparency of the resin.

A water dispersible sulfopolymer for use as a material in the layer-wise additive manufacture of a 3D part made of a non water dispersible polymer wherein the water dispersible polymer is a reaction product of a metal sulfo monomer, the water dispersible sulfo-polymer being dispersible in water resulting in separation of the water dispersible polymer from the 3D part made of the non water dispersible polymer.

An insert molding method includes: integrally molding a thermoplastic resin with an insert component, by setting the insert component, which is a metal conductor, in a mold; clamping the mold; and injection-filling the thermoplastic resin in a cavity. The insert component is made of copper or a copper alloy. Prior to injection molding, a thin film layer mainly made of a chlorosulfonated polyethylene is formed on a surface of a portion of the insert component to be covered with the thermoplastic resin, and the thin film layer is crosslinked in the mold during injection molding.

A multi-functional battery separator comprises two or more active separator layers deposited from different polymer solutions to form a multilayered unitary structure comprising a free-standing film, a multiplex film on one side of a porous substrate, or separate films or multiplex films on opposite sides of a porous substrate. In a preferred embodiment, the cascade coating method is used to simultaneously deposit the active separator layers wet so that the physical, electrical and morphological changes associated with the polymer drying out process are avoided or minimized. The multi-functional separator is inexpensive to fabricate, exhibits enhanced ionic conductivity and ionic barrier properties, and eliminates gaps between individual layers in a separator stack that can contribute to battery failure.

Disclosed are processes for preparing a copolymer, a copolymer prepared by the process, a sulfur-crosslinkable rubber mixture, and the use of the sulfur-crosslinkable rubber mixture for production of motor vehicle tires. In one embodiment, the monomer has the formula: A-SP, wherein A is a chemical group containing at least one aliphatic double bond, S is a sulfur atom, and P is a protecting group.

A composite powder includes a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix and methods of making thereof. Various articles can be manufactured from such composite powders.

A method of processing a water-dispersible, polymer-based material in a bath of a water-based solution includes providing a molten water-dispersible polymer material having monovalent cations. The water-dispersible polymer is introduced into a water bath comprising multivalent salt dissociated in the water bath into multivalent cations and anions. The water-dispersible polymer is retained within the water bath with the dissociated multivalent cations to quench the water-dispersible, polymer-based material while the monovalent cations proximate a surface of the water-dispersible polymer are exchanged with multivalent cations to form a barrier that temporarily resists dispersion of the water-dispersible, polymer-based material within the water bath. The method includes removing the water-dispersible polymer from water bath after the exchange step.

Disclosed is a process whereby diverse classes of materials can be 3D printed and fully integrated into device components with active properties. An exemplary embodiment shows the seamless interweaving of five different materials, including (1) emissive semiconducting inorganic nanoparticles, (2) an elastomeric matrix, (3) organic polymers as charge transport layers, (4) solid and liquid metal leads, and (5) a UV-adhesive transparent substrate layer, demonstrating the integrated functionality of these materials. Further disclosed is a device for printing these fully integrated 3D devices.

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.