Patent application number | Description | Published |
20090312489 | DEVICE FOR PRODUCING DISPERSIONS AND METHOD OF PRODUCING DISPERSIONS - The instant invention is a device for producing dispersions and method of producing dispersions. The device for producing dispersions includes a first stator, a second stator, a shell encasing the first stator and the second stator, a rotor being disposed therebetween the first stator and the second stator thereby forming a first chamber and a second chamber, at least one first inlet port into the first chamber, and at least one outlet port out of the second chamber. The device may optionally include at least one additional second inlet port into the second chamber. The method of producing a polyurethane dispersion includes the following steps: (1) providing a device for producing a dispersion including a first stator, a second stator, a shell encasing the first stator and the second stator, a rotor being disposed therebetween the first stator and the second stator thereby forming a first chamber and a second chamber, at least one first inlet port into the first chamber, at least one outlet port out of the second chamber; and optionally one or more additional second inlet ports into the second chamber; (2) introducing a prepolymer phase and an aqueous phase into the first chamber via the first inlet ports; (3) emulsifying the prepolymer phase in the aqueous phase; (4) thereby producing a prepolymer emulsion; (5) introducing a chain extender agent into the emulsion in the second chamber via the second inlet port; (6) chain extending the prepolymer; and (7) thereby producing a polyurethane dispersion. | 12-17-2009 |
20110228630 | Reduced Transit Static Mixer Configuration - Excessive residence time in the conduits located between the outlet of a static mixer and a reactor/separator reservoir can lead to undesired by-products, formation of solids, and conduit fouling. This disclosure relates to an improved configuration for a static mixer with reduced transitory time to help reduce the creation of undesired by-products and fouling during the process of mixing, and more particularly to a phosgene reactor comprising a short or very short conduit for reducing the transit time from the static mixer to a reactor/separator reservoir to one second or less. | 09-22-2011 |
20110230679 | Reactive Static Mixer - This disclosure relates to a static phosgene mixer, and more generally, to an apparatus for mixing of fluid components such as phosgene and amine during an highly reactive, chemical reaction that is vulnerable to the creation of undesired by-products, and equipment fouling. A guide element is disposed in the static mixer to divert the incoming flow of phosgene around the guide element and create an annular mixing passage in the static mixer. This allows for the use of an increased external radius of the effective phosgene flow while maintaining phosgene velocity by creating a blockage of the flow. The same flow, when transformed from a circular configuration to an annular configuration has an increased external radius, and a greater quantity of MDA jets can be placed along the increased radius, thus increasing the overall homogeneity of the mixture. Further, the cross-sectional area of the annular passage section of phosgene defined around the guide element controls the velocity of phosgene which facilitates the mixing of MDA injected through the jets into the phosgene. | 09-22-2011 |
20110242930 | REACTIVE STATIC MIXER - This disclosure relates to a static phosgene mixer, and more generally, to an apparatus for mixing of fluid components such as phosgene and amine during an highly reactive, chemical reaction that is vulnerable to the creation of undesired by-products, and equipment fouling. A guide element is disposed in the static mixer to divert the incoming flow of phosgene around the guide element and create an annular mixing passage in the static mixer. This allows for the use of an increased external radius of the effective phosgene flow while maintaining phosgene velocity by creating a blockage of the flow. The same flow, when transformed from a circular configuration to an annular configuration has an increased external radius, and a greater quantity of MDA jets can be placed along the increased radius, thus increasing the overall homogeneity of the mixture. Further, the cross-sectional area of the annular passage section of phosgene defined around the guide element controls the velocity of phosgene which facilitates the mixing of MDA injected through the jets into the phosgene. | 10-06-2011 |
20120327739 | DEVICE FOR PRODUCING DISPERSIONS AND METHOD OF PRODUCING DISPERSIONS - The instant invention is a device for producing dispersions. The device for producing dispersions includes a first stator, a second stator, a shell encasing the first stator and the second stator, a rotor being disposed therebetween the first stator and the second stator thereby forming a first chamber and a second chamber, at least one first inlet port into the first chamber, and at least one outlet port out of the second chamber. The device may optionally include at least one additional second inlet port into the second chamber. | 12-27-2012 |
20130172604 | PROCESS FOR THE PRODUCTION OF METHYLENE DIPHENYL DIISOCYANATE ISOMER MIXTURES WITH SPECIFIC ISOMER DISTRIBUTIONS AND NEW PRODUCTS DERIVED - The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content and a high 2,4′-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4′-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications. | 07-04-2013 |
20130176814 | REACTIVE FLOW STATIC MIXER WITH CROSS FLOW OBSTRUCTIONS - Embodiments of the present invention relate to a mixing apparatus. Particularly, embodiments of the present invention provide a mixing apparatus for mixing fluid components such as phosgene and amine during a highly reactive chemical reaction. One embodiment provides a mixing conduit ( | 07-11-2013 |
20140264163 | PROCESS FOR THE PRODUCTION OF METHYLENE DIPHENYL DIISOCYANATE ISOMER MIXTURES WITH HIGH 2,4'- METHYLENE DIPHENYL DIISOCYANATE PURITY - The present invention includes a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content and a high 2,4′-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4′-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications. | 09-18-2014 |
20140338843 | PROCESS AND APPARATUS FOR FORCED CIRCULATION EVAPORATIVE CRYSTALLIZATION WITH LARGE DEPOSIT INVENTORY - Disclosed are processes and apparatuses for producing a crystalline product. The processes and apparatuses may extend the operational time of an evaporative crystallizer by providing an internal volume or large deposit inventory for fouling deposits to reside without impacting the unit operation. | 11-20-2014 |
20150018575 | HIGHLY SEGREGATED JET MIXER FOR PHOSGENATION OF AMINES - Embodiments of the present invention provide a mixing conduit ( | 01-15-2015 |
20150078113 | Radial-Flow Rotor-Stator Mixer and Process to Produce Polymeric Froths - Modified radial-flow rotor-stator mixers | 03-19-2015 |