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Application filed by Crc Chem Res CofiledCriticalCrc Chem Res Co
Priority to IES940807priorityCriticalpatent/IES940807A2/en
Publication of IES62633B2publicationCriticalpatent/IES62633B2/en
Publication of IES940807A2publicationCriticalpatent/IES940807A2/en
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
(AREA)
Abstract
The invention relates to a process for the manufacture of urea formaldehyde foams of the type used in mining or tunnel construction. The process comprises: (a) mixing a solution of urea formaldehyde resin with a foaming agent; and (b) curing the mixture; characterized in that, from 3 to 12% by weight of the total composition of urea is added to the urea formaldehyde resin or the foaming agent or both immediately prior to the mixing of the components in step (a).
IES9408071994-10-041994-10-04Process for the manufacture of urea formaldehyde foams
IES940807A2
(en)