Provided herein are systems and processes to control multiple temperatures in additive manufacturing. Such temperature control adjusts polymer properties and facilitates processing of materials to form 3D objects. The systems and processes disclosed herein also facilitate the processing of typically difficult-to-process materials and deliver such materials to a photocuring zone configured to photopolymerize materials into 3 dimensional objects with a layer-by-layer process. Such processes can include the steps of heating a resin to a flowable temperature, applying the resin to a carrier, cooling the film to increase viscosity or to solidify the resin, and applying the film containing the resin onto an area being printed, then photocuring the film. Also provided herein are resins and related polymer materials having properties that are tunable with exposure to more than one temperature zone. The formed polymers can include multiple regions of polymer material, each independently having distinct properties. Processes and systems are also provided herein that are configured to produce polymeric materials having multiple regions with distinct properties from a single-component formulation.

A vehicle bond filler formulation is provided that includes a part A having curable resin and a monomer reactive diluent. A part B storage-separate, cure initiator package contains a free-radical cure initiator. At least one color changing dye adapted to change color upon mixing the part A and the part B and within ±5 minutes of cure of the curable resin to a sandable condition is present in either the part A or a separate part C, a guide coat colorant, or a combination thereof. A process of for repairing a vehicle body is also provided that includes mixing a part A containing the at least one color changing dye with the part B to form an internal guide coat mixture applied to a substrate of the vehicle body in need of repair. The mixture cures causing the color changing dye to the terminal change color within ±5 minutes of cure of the curable resin to a sandable condition.

A vehicle bond filler formulation is provided that includes a part A having curable resin and a monomer reactive diluent. A part B storage-separate, cure initiator package contains a free-radical cure initiator. At least one color changing dye adapted to change color upon mixing the part A and the part B and within ±5 minutes of cure of the curable resin to a sandable condition is present in either the part A or a separate part C, a guide coat colorant, or a combination thereof. A process of for repairing a vehicle body is also provided that includes mixing a part A containing the at least one color changing dye with the part B to form an internal guide coat mixture applied to a substrate of the vehicle body in need of repair. The mixture cures causing the color changing dye to the terminal change color within ±5 minutes of cure of the curable resin to a sandable condition.

Provided herein are compositions, devices and systems comprising thermoresponsive, biodegradable elastomeric materials, and methods of use and manufacture thereof.

An adhesive composition may include, but is not limited to: at least one of an alkyl acrylate monomer and a methacrylate monomer; and at least one of a polyester alkyd polymer and a vinyl ester alkyd polymer.

Process for curing a thermoset resin comprising the step of contacting said resin with (i) an imine of the structure C(R.sup.2)(R.sup.3)═N—R.sup.1 wherein R.sup.1 is selected from hydrogen, hydroxyl, linear or branched alkyl having 1-22 carbon atoms, cycloalkyl having 3-22 carbon atoms, aryl having 6 to 15 carbon atoms, and aralkyl having 7 to 22 carbon atoms, which alkyl, cycloalkyl, aryl, and aralkyl groups may be optionally substituted with one or more groups containing heteroatoms selected from S, O, P, and/or Si. R.sup.2 is selected from C(R.sup.6)(R.sup.5)—C(═O)—R.sup.4, —C(R.sup.6)(R.sup.5)—C(═S)—R.sup.4, and —C(R.sup.6)(R.sup.5)—C(═N)—R.sup.4, wherein R.sup.4, R.sup.5, and R.sup.6 are selected from hydrogen, linear or branched alkyl having 1-6 carbon atoms, cycloalkyl having 3-12 carbon atoms, aryl, aralkyl, alkoxy having 1-6 carbon atoms, and aryloxy. R.sup.3 is selected from linear or branched alkyl having 1-22 carbon atoms, 1 cycloalkyl having 3-22 carbon atoms, aryl having 6 to 15 carbon atoms, and aralkyl having 7 to 22 carbon atoms, and (ii) methyl isopropyl ketone peroxide.

Process for curing a thermoset resin comprising the step of contacting said resin with (i) an imine of the structure C(R.sup.2)(R.sup.3)═N—R.sup.1 wherein R.sup.1 is selected from hydrogen, hydroxyl, linear or branched alkyl having 1-22 carbon atoms, cycloalkyl having 3-22 carbon atoms, aryl having 6 to 15 carbon atoms, and aralkyl having 7 to 22 carbon atoms, which alkyl, cycloalkyl, aryl, and aralkyl groups may be optionally substituted with one or more groups containing heteroatoms selected from S, O, P, and/or Si. R.sup.2 is selected from C(R.sup.6)(R.sup.5)—C(═O)—R.sup.4, —C(R.sup.6)(R.sup.5)—C(═S)—R.sup.4, and —C(R.sup.6)(R.sup.5)—C(═N)—R.sup.4, wherein R.sup.4, R.sup.5, and R.sup.6 are selected from hydrogen, linear or branched alkyl having 1-6 carbon atoms, cycloalkyl having 3-12 carbon atoms, aryl, aralkyl, alkoxy having 1-6 carbon atoms, and aryloxy. R.sup.3 is selected from linear or branched alkyl having 1-22 carbon atoms, 1 cycloalkyl having 3-22 carbon atoms, aryl having 6 to 15 carbon atoms, and aralkyl having 7 to 22 carbon atoms, and (ii) methyl isopropyl ketone peroxide.

An in-mold coating includes graphene and a base material including an unsaturated polyester and/or a vinyl ester monomer. A part includes a main body formed of a polymeric sheet molding compound and an in-mold coating disposed on the main body, where the in-mold coating includes graphene and a base material that comprises an unsaturated polyester and/or a vinyl ester monomer. A method of creating an in-mold coating includes providing a base material comprising at least one of an unsaturated polyester and a vinyl ester monomer, and the method further includes adding graphene to the base material.

An in-mold coating includes graphene and a base material including an unsaturated polyester and/or a vinyl ester monomer. A part includes a main body formed of a polymeric sheet molding compound and an in-mold coating disposed on the main body, where the in-mold coating includes graphene and a base material that comprises an unsaturated polyester and/or a vinyl ester monomer. A method of creating an in-mold coating includes providing a base material comprising at least one of an unsaturated polyester and a vinyl ester monomer, and the method further includes adding graphene to the base material.

An in-mold coating includes graphene and a base material including an unsaturated polyester and/or a vinyl ester monomer. A part includes a main body formed of a polymeric sheet molding compound and an in-mold coating disposed on the main body, where the in-mold coating includes graphene and a base material that comprises an unsaturated polyester and/or a vinyl ester monomer. A method of creating an in-mold coating includes providing a base material comprising at least one of an unsaturated polyester and a vinyl ester monomer, and the method further includes adding graphene to the base material.