Abstract: A three-dimensional printing method is provided. The method comprises selectively forming a three-dimensional structure from a polymer composition. The polymer composition comprises a thermotropic liquid crystalline polymer and exhibits a complex viscosity of from about 50 to about 1,000 Pa-s, as determined by a parallel plate rheometer at an angular frequency of 0.63 radians per second, constant strain amplitude of 1%, and temperature 15° C. above the melting temperature of the polymer composition.

Abstract: A three-dimensional printing method is provided. The method comprises selectively forming a three-dimensional structure from a polymer composition. The polymer composition comprises a thermotropic liquid crystalline polymer and exhibits a complex viscosity of from about 50 to about 1,000 Pa-s, as determined by a parallel plate rheometer at an angular frequency of 0.63 radians per second, constant strain amplitude of 1%, and temperature 15° C. above the melting temperature of the polymer composition.

Abstract: A three-dimensional printing method is provided. The method comprises supplying a polymer composition to an extruder system and selectively dispensing the polymer composition through an extruder nozzle to form a three-dimensional structure. The polymer composition comprises a plurality of reinforcing fibers embedded and distributed within a thermoplastic polymer matrix, wherein the thermoplastic polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition and the reinforcing fibers constitute from about 10 wt. % to about 80 wt. % of the composition.

Abstract: A three-dimensional printing method is provided. The method comprises selectively forming a three-dimensional structure from a polymer composition. The polymer composition comprises a polyarylene sulfide and an impact modifier.

Abstract: A three-dimensional printing method is provided. The method comprises selectively fusing a powder within a powder bed, wherein the powder comprises a plurality of polyarylene sulfide microparticles having a volume-based median particle size of from about 0.5 to about 200 micrometers.

Abstract: A three-dimensional printing method is provided. The method comprises selectively forming a three-dimensional structure from a polymer composition. The polymer composition comprises a thermally conductive particulate material distributed within a thermoplastic polymer matrix, and further wherein the polymer composition exhibits a through-plane thermal conductivity of about 0.10 W/m-K or more.

Abstract: A process for producing an acrylate product, the process comprising the steps of (a) providing a crude product stream comprising the acrylate product and an alkylenating agent; (b) cooling the crude product stream to form a cooled crude product stream having a temperature less than 100° C.; (c) absorbing the cooled stream to form an absorbent stream and an absorbed product stream; and (d) separating at least a portion of the absorbed product stream to form an alkylenating agent stream comprising at least 1 wt % alkylenating agent and an intermediate product stream comprising acrylate product.

Abstract: In one embodiment, the invention is to process for producing acrylics. The process includes the steps of contacting a crude product stream with an extraction agent mixture at a temperature less than 50° C.

Abstract: In one embodiment, the invention is to a process for producing an acrylate product. The process comprises the step of dehydrating a crude alkylenating agent stream to form a dehydrated alkylenating agent stream and a water stream. The process further comprises reacting acetic acid with at least a portion of the dehydrated alkylenating agent stream to form a crude acrylate product stream comprising acrylate product and alkylenating agent stream. The dehydrating of the crude alkylenating stream is accomplished using at least one evaporator or at least one distillation column.

Abstract: In one embodiment, the invention is to a process for producing an acrylate product. The process comprises the step of providing a crude product stream comprising the acrylate product and an alkylenating agent. The process further comprises the step of separating at least a portion of the crude product stream to form an alkylenating agent stream and an intermediate product stream. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate product.

Abstract: The invention relates to a process for producing an acrylate product comprising the step of reacting a reaction gas mixture A comprising methanol and oxygen to form a product gas mixture A. The process may further comprise the step of combining at least a portion of the product gas mixture A and acetic acid to form a reaction gas mixture B. The process may further comprise the step of reacting at least a portion of the acetic acid in the reaction gas input mixture B with at least a portion of the formaldehyde in the reaction gas input mixture B to form a product gas mixture B. The process may further comprise the step of separating at least a portion of the product gas mixture B to form an alkylenating agent stream comprising at least 1 wt % alkylenating agent and an intermediate acrylate product stream comprising acrylate product.

Abstract: The invention is to a process for producing an acrylate product. The process includes the steps of contacting an alkanoic acid and an alkylenating agent over a catalyst composition under conditions effective to produce the acrylate product. The catalyst composition comprises vanadium, bismuth and titanium. Preferably, the catalyst comprises 0.3 wt % to 30 wt % vanadium, 0.1 wt % to 69 wt % bismuth and 0.1 wt % to 61 wt % tungsten, in an active phase.

Abstract: A process for producing a crude product stream including an acrylate product and an alkylenating agent and separating at least a portion of the crude product stream to form alkylenating agent and intermediate product streams. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate products in high concentration. The crude product stream is formed by contacting acetic acid and formaldehyde in the presence of at least one aldol condensation catalyst under conditions effective to form the stream. Catalysts which are particularly useful are multielement oxide active materials of the general formula V1PbFecX1dX2eOn.

Abstract: In one embodiment, the invention is to a process for producing an acrylate product. The process includes the steps of contacting an alkanoic acid and an alkylenating agent over a catalyst composition under conditions effective to produce the acrylate product. The catalyst composition comprises a metal phosphate matrix containing vanadium and bismuth. Preferably, the catalyst comprises, in an active phase, vanadium to bismuth at a molar ratio of at least 0.02:1. Preferably, the catalyst composition is substantially free of titanium.

Abstract: The invention relates to a process for producing an acrylate product comprising the step of reacting a reaction gas mixture A comprising methanol and oxygen to form a product gas mixture A. The process may further comprise the step of combining at least a portion of the product gas mixture A and acetic acid to form a reaction gas mixture B. The process may further comprise the step of reacting at least a portion of the acetic acid in the reaction gas input mixture B with at least a portion of the formaldehyde in the reaction gas input mixture B to form a product gas mixture B. The process may further comprise the step of separating at least a portion of the product gas mixture B to form an alkylenating agent stream comprising at least 1 wt % alkylenating agent and an intermediate acrylate product stream comprising acrylate product.

Abstract: In one embodiment, the present invention is directed to a process for producing an acrylate product. The process comprises the step of reacting, optionally in a reaction zone, a reaction mixture comprising an alkanoic acid and an alkylenating agent under conditions effective to form a crude acrylate product. The crude acrylate product comprises acrylate product and acetic acid. The process further comprises the step of reacting, in a separation zone, at least a portion of the acrylate product and at least a portion of the acetic acid to form an intermediate acrylate product. The intermediate acrylate product comprises a Michael addition by-product, e.g., 3-acetoxypropionic acid and/or 3-acetoxypropanoic acid. The process further comprises the step of separating at least a portion of the intermediate acrylate product to form a by-product stream and a purified acrylate product stream.

Abstract: A process for producing a crude product stream including an acrylate product and an alkylenating agent and separating at least a portion of the crude product stream to form alkylenating agent and intermediate product streams. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate products in high concentration. The crude product stream is formed by contacting acetic acid and formaldehyde in the presence of at least one aldol condensation catalyst under conditions effective to form the stream. Catalysts which are particularly useful are multielement oxide active materials of the general formula V1PbFecX1dX2eOn.

Abstract: In one embodiment, the invention is to a catalyst composition, comprising vanadium and titanium. Preferably, the molar ratio of vanadium to titanium in an active phase of the catalyst composition is greater than 0.5:1.

Abstract: In one embodiment, the invention is directed to a process for producing an acrylate product. The process comprises the step of reacting in a reactor a reaction mixture comprising an alkanoic acid and a liquid alkylenating agent source comprising methanol in an amount less than 0.5 wt. % over a catalyst and under conditions effective to form a crude acrylate product comprising acrylate product and alkylenating agent. The process further comprises the step of separating at least a portion of the crude acrylate product to form at least one alkylenating agent stream and at least one purified acrylate product stream comprising acrylate product.

Abstract: In one embodiment, the invention is to a catalyst composition, comprising vanadium and titanium. Preferably, the molar ratio of vanadium to titanium in an active phase of the catalyst composition is greater than 0.5:1.