Asandei
Alexandru Asandei, Vernon, CT US
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20140054816 | Process for Particleboard Manufacture - Improved particleboard and methods for fabricating improved particleboard (e.g., natural fiber/material-based particleboard) are disclosed. More particularly, the present disclosure provides systems/methods for fabricating particleboard (e.g., formaldehyde-free particleboard) utilizing natural fibers/materials (e.g., lignocellulosic materials), wherein the particleboard has improved performance characteristics and/or mechanical properties. Methods for fabricating fiber-reinforced biocomposites (e.g., natural fiber-reinforced wheat gluten biocomposites) are disclosed. For example, systems/methods for fabricating particleboard from lignocellulosic materials (e.g., coconut materials), along with a binder material (e.g., wheat gluten), are provided. In general, the fiber or lignocellulosic material is treated with sodium hydroxide and/or a silane coupling agent as an adhesion promoter to enhance interfacial adhesion between the fiber and the binder. For example, (3-triethoxysilylpropyl)-t-butylcarbamate (MISO) (a masked isocyanate functional silane) was utilized to improve interfacial adhesion between the binder and the natural fibers. | 02-27-2014 |
Alexandru D. Asandei, Vernon, CT US
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20130225712 | MANGANESE CATALYZED PHOTOPOLYMERIZATION OF FLUORINATED MONOMERS - The disclosure discloses initiating systems for the radical polymerization of alkenes, and especially fluorine substituted alkenes. The polymerization is catalyzed by a metal carbonyl, preferably manganese carbonyl. The polymerization is initiated directly from alkyl halides at room temperature under visible white light. The polymers also allow the synthesis of block copolymers. The process comprises polymerizing at least one alkene monomer in the presence of a halide radical initiator, carbonyl catalyst and a solvent, under reaction conditions and for a time sufficient to polymerize the at least one alkene monomer to form a polymer. The present disclosure provides a method for living polymerization of alkene monomers which provides a high level of macromolecular control over the polymerization process and which leads to uniform and controllable polymeric products. This disclosure also provides a method for activating any halide (Cl, Br, I) chain ends of such polymers for the synthesis of block copolymerizations. | 08-29-2013 |
20130225775 | FREE RADICAL AND CONTROLLED RADICAL POLYMERIZATION PROCESSES USING HYPERVALENT IODIDE RADICAL INITIATORS - A process is described comprising polymerizing at least one unsaturated monomer (e.g., fluorine substituted alkene monomer) in the presence of a hypervalent iodide radical initiator and a solvent, under reaction conditions and for a time sufficient to polymerize the at least one unsaturated monomer to form a polymer. The present disclosure provides a method for living polymerization of unsaturated monomers (e.g., fluorine substituted alkene monomers), which provides a high level of macromolecular control over the polymerization process and which leads to uniform and controllable polymeric products. The present disclosure also provides a method of functionalization of organic substrates with a CF | 08-29-2013 |
20150057419 | FREE RADICAL AND CONTROLLED RADICAL POLYMERIZATION PROCESSES USING AZIDE RADICAL INITIATORS - A process is described comprising polymerizing at least one unsaturated monomer (e.g., fluorine substituted alkene monomer) in the presence of an azide radical initiator and a solvent, under reaction conditions and for a time sufficient to polymerize the at least one unsaturated monomer to form a polymer. The present disclosure provides a method for the synthesis of polymers with 100% azide chain end functionality, for living/controlled radical polymerization of unsaturated monomers (e.g., fluorine substituted alkene monomers) and for the synthesis of complex polymer architectures, using azide click reactions. | 02-26-2015 |
Alexandru Dragos Asandei, Vernon, CT US
Patent application number | Description | Published |
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20080234433 | CATALYZED MULTIPLE GRAFTING POLYMERIZATIONS - Methods of preparing a graft copolymer comprising a plurality of different grafts wherein the methods employ an epoxide macroinitiator and an early transition metal radical ring opening catalyst without the need for any epoxide protection/deprotection steps. Such a process results in graft copolymers having complex polymer architectures. | 09-25-2008 |
20080249255 | RING-OPENING POLYMERIZATION OF CYCLIC ESTERS, POLYESTERS FORMED THEREBY, AND ARTICLES COMPRISING THE POLYESTERS - Cyclic esters are polymerized in the presence of a catalytic amount of a Group 4 transition metal hydride. The method is capable of producing high molecular weight polyesters with low polydispersities. These high molecular weight polyesters exhibit improved mechanical properties and are useful in a variety of product applications. | 10-09-2008 |
20100069598 | RING-OPENING POLYMERIZATION OF CYCLIC ESTERS, POLYESTERS FORMED THEREBY, AND ARTICLES COMPRISING THE POLYESTERS - Cyclic esters are polymerized in the presence of a catalytic amount of a Group 4 transition metal hydride. The method is capable of producing high molecular weight polyesters with low polydispersities. These high molecular weight polyesters exhibit improved mechanical properties and are useful in a variety of product applications. | 03-18-2010 |