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Machine translation
1. (WO1981003025) UREA FORMALDEHYDE DISPERSIONS MODIFIED WITH HIGHER ALDEHYDES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003025    International Application No.:    PCT/US1981/000474
Publication Date: 29.10.1981 International Filing Date: 13.04.1981
IPC:
C05C 9/02 (2006.01), C08G 12/12 (2006.01), C08J 3/03 (2006.01)
Applicants:
Inventors:
Priority Data:
143367 24.04.1980 US
Title (EN) UREA FORMALDEHYDE DISPERSIONS MODIFIED WITH HIGHER ALDEHYDES
(FR) DISPERSIONS DE FORMALDEHYDE-UREE MODIFIEES AVEC DES ALDEHYDES SUPERIEURS
Abstract: front page image
(EN)A process for the preparation of neutralized, urea aldehyde polymeric dispersions by acid catalyzed reaction of urea and formaldehyde plus a higher aldehyde, having from two to four carbon atoms, wherein the mole ratio of formaldehyde to the higher aldehyde is at least 2:1 and the function of the higher aldehyde is to act as an inhibitor of further polymerization. The dispersions are further stabilized against settling by the addition of thickener-suspending agents. The products of the process are useful as sources of nitrogen which continue to fertilize plants, especially grasses for long periods of time after applied by means of conventional spraying equipment.
(FR)Procede de preparation de dispersions polymeres neutralisees d'aldehyde-uree au moyen d'une reaction catalysee par un acide entre l'uree et le formaldehyde auxquels on ajoute un aldehyde superieur, possedant de deux a quatre atomes de carbone, dans laquelle le rapport molaire entre le formaldehyde et l'aldehyde superieur est au moins egal a 2:I et la fonction de l'aldehyde superieur consiste a agir en temps qu'agent inhibiteur d'une polymerisation ulterieure. Les dispersions sont en outre stabilisees contre la decantation par l'adjonction d'agents d'epaississement et de suspension. Les produits de ce procede sont utiles com me sources d'azote qui continuent a fertiliser les plantes, notamment des graminees, pendant de longues periodes de temps apres leur application au moyen d'un equipement de pulverisation conventionnel.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)