METHOD OF PRODUCTION OF THE CARBAMIDE-FORMALDEHYDE FOAMED PLASTICS Russian patent published in 2007 - IPC C08J9/12 C08L61/24

Abstract RU 2307131 C1

FIELD: chemical industry; methods of production of the carbamide-formaldehyde foamed plastics.

SUBSTANCE: the invention is pertaining to the method of production of the carbamide-formaldehyde foamed plastics, The method provides for injection of the water solution of the carbamide-formaldehyde oligomer in the water solution of the surface-active substances and the curing agent, saturation of the produced solution with the gas under the choronomic excessive pressure up to 10 atmospheres. At that the foaming action is conducted by putting off of the choronomic excess pressure with release of the gas phase. The produced foamed plastics is characterized by the improved heat-insulating and mechanical properties.

EFFECT: the invention ensures production of the foamed plastics with the improved heat-insulating and mechanical properties.

3 cl, 2 dwg, 1 tbl

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RU 2 307 131 C1

Authors

Velikanov Aleksandr Vladimirovich

Mazejkin Roman Evgen'Evich

Dates

2007-09-27—Published

2006-05-29—Filed