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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montedison SpA
Original Assignee
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Montecatini Societa Generale per lIndustria Mineraria e Chimica SpAfiledCriticalMontecatini Societa Generale per lIndustria Mineraria e Chimica SpA
Publication of ES282018A1publicationCriticalpatent/ES282018A1/en
C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
C07C45/78—Separation; Purification; Stabilisation; Use of additives
C07C45/86—Use of additives, e.g. for stabilisation
Landscapes
Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Compositions Of Macromolecular Compounds
(AREA)
Abstract
A process for preparing stable and formaldehyde aqueous solutions, characterized in that it consists of adding the stabilizer in batches to the folmaldehyde solution, at a temperature of 20 to 100º c, and preferably of 40 to 70º c, at a ph of 3.0 to 5, 0 and mixing for a time of 10 minutes to 10 hours. (Machine-translation by Google Translate, not legally binding)
ES282018A1961-10-181962-10-17
A PROCEDURE TO PREPARE AQUEOUS AND STABLE FORMALDEHYDE SOLUTIONS
ExpiredES282018A1
(en)
Procedure to obtain a composition to prepare solutions for the treatment of metal surfaces. (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of alpha-escina by isomerization of beta-escina in aqueous solution. (Machine-translation by Google Translate, not legally binding)
Procedimine for the obtaining of concentrated and stable aqueous solutions of furanocromonas (Machine-translation by Google Translate, not legally binding)