Use of NIR (Near-Infrared Spectroscopy) in composite production
AssigneeEnigma N.V.
InventorsEugenia Dessipri, Georgios D. Chryssikos, Vassilis Gionis, Alkiviadis Paipetis, George Kalousis
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Abstract
A method for controlling the production of formaldehyde resin compositions in which formaldehyde takes part in a reaction with one or a combination of co resin forming material (of the type phenol, urea, melamine) the method includes monitoring at least one of the formation of the reaction mixture and the course of the reaction by near-infrared (NIR) spectroscopy and adjusting the course of the reaction (when necessary) in accordance with the results of the spectroscopy to obtain optimum conditions for the reaction.
Claims18
A method for controlling the production of formaldehyde resin compositions in which formaldehyde takes part in a reaction with at least one co-resin forming material in an aqueous reaction solution, the method comprising monitoring at least one of the formation of the reaction solution and the course of the reaction in the solution by near-infrared (NIR) spectroscopy and, if necessary, adjusting the course of the reaction in accordance with the results of the spectroscopy to obtain optimum conditions for the reaction.
A method for controlling the production of formaldehyde resin compositions in which formaldehyde takes part in a reaction with at least one co-resin forming material in an aqueous reaction solution, the method comprising monitoring at least one of the formation of the reaction solution and the course of the reaction in the solution by near-infrared (NIR) spectroscopy, and, if necessary, adjusting the course of the reaction in accordance with the results of the spectroscopy to obtain optimum conditions for the reaction, wherein said monitoring is effected by comparing near-infrared spectra obtained periodically from the reaction solution or data computed therefrom with measurements or data calculated previously during calibration of the system.
A method for assessing the performance of a formaldehyde-based resin, the method comprising subjecting an aqueous solution comprising the resin to near-infrared spectroscopy to determine the spectra of the resin and comparing the spectra so determined to a reference spectra of resins of known performance.
Dependencies are inferred from the claim text.