A fabrication method and application of topological elastomers with highly branched structures, low modulus and high elasticity. The topological elastomers comprise dendritic macromolecules. The fabrication method includes direct crosslinking, post-crosslinking, grafting, and copolymerization. The performance of the elastomer can be easily tuned via changing the topology of the polymer network. The breakthrough of this invention lies in that these topological elastomers with highly branched structures are having low modulus and high elasticity, which would expand its application in the field of elastomer. Notably, the variety of topological elastomers, the versatility of curing chemistries, the availability of a wide variety of monomers, and the various polymerization methods are enabling the fabrication of topological elastomers with feasibility and efficiency.

Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.

A method of forming a three-dimensional object, wherein said three-dimensional object is an insert for use between a helmet and a human body, is described. The method may use a polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object, comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from said first component.

A method of forming a three-dimensional object, wherein said three-dimensional object is an insert for use between a helmet and a human body, is described. The method may use a polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object, comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from said first component.

A method of forming a three-dimensional object (e.g. comprised of polyurethane, polyurea, or copolymer thereof) is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid comprising a mixture of: (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid blocked polymer scaffold and advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, with the intermediate containing the second solidifiable component; and then (d) contacting the three-dimensional intermediate to water to form the three-dimensional object.

A method of forming a three-dimensional object (e.g. comprised of polyurethane, polyurea, or copolymer thereof) is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid comprising a mixture of: (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid blocked polymer scaffold and advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, with the intermediate containing the second solidifiable component; and then (d) contacting the three-dimensional intermediate to water to form the three-dimensional object.

A thermoplastic polymer film comprising a multilayer film having an interpenetrating polymer network (IPN) layer and a polymer layer is provided. The multilayer thermoplastic polymer film may possess beneficial and desirable properties useful in protecting surfaces from harmful environmental conditions or elements, such as for example, stain and scratch resistance as well as high gloss. Methods of making the multilayer film with interpenetrating polymer network are also provided.

Disclosed herein is a coating composition obtained by mixing a resin and/or hardener; a sagging control agent (SCA) reactive to resin and/or hardener; and a catalyst. Further disclosed herein are methods of preparing 1K and 2K coating compositions and using the coating compositions in an automotive to form a clearcoat.

Disclosed herein is a coating composition obtained by mixing a resin and/or hardener; a sagging control agent (SCA) reactive to resin and/or hardener; and a catalyst. Further disclosed herein are methods of preparing 1K and 2K coating compositions and using the coating compositions in an automotive to form a clearcoat.

A biomaterial resin is a combination of a thiourethane oligomer, at least one (meth)acrylate monomer, with a photoinitiator. The thiourethane oligomer comprises the addition product of at least one thiol monomer and at least one isocyanate monomer. The biomaterial resin can be converted into a biomaterial device that is the 3D-printed biomaterial network. This biomaterial network can be further processed thermally and/or photochemically to increase the network's crosslinking density with or without an imposed crosslinking density gradient. The biomaterial network can be used in a biomaterial device such as a tendon substitute.