ES304268A1 - A procedure for the continuous preparation of a solution of formaldehyde. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the continuous preparation of a solution of formaldehyde. (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Stamicarbon BV
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Stamicarbon BV
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Priority to ES0304268ApriorityCriticalpatent/ES304268A1/en
Publication of ES304268A1publicationCriticalpatent/ES304268A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for the continuous preparation of a formaldehyde solution by gas feed for the synthesis of formaldehyde to a system comprising two or more stages of absorption in the first of which the synthesis gas is washed with a circulating mixture of formaldehyde and alcohol, which contains water, and which runs countercurrently, and in the latter of which the gas, which is then largely free of formaldehyde, is washed countercurrently with water or a diluted alcohol solution; the solution resulting from the absorption in the stage or in each of the stages after the first one is used in conjunction with part of the solution produced in a preceding stage as a washing liquid in said step, while substitution alcohol is supplied to the system and part of the solution produced in the first stage, which is not recirculated, is discharged from the system as a final solution, the respective regime of water, alcohol and steam formaldehyde being maintained in the system and the discharge regime of the solution final in a balance such that the final solution contains from 5 to 40% by weight of water and no more than 5 moles of formaldehyde per mole of alcohol. (Machine-translation by Google Translate, not legally binding)
ES0304268A1964-09-221964-09-22A procedure for the continuous preparation of a solution of formaldehyde. (Machine-translation by Google Translate, not legally binding)
ExpiredES304268A1
(en)
Latently reactive, storage-stable mixture that polymerizes under the influence of ambient moisture without the addition of further components, as well as process for the production thereof