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VICTOR ALEXEEVICH NOVAK JURY S
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VICTOR ALEXEEVICH NOVAK JURY S
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Application filed by VICTOR ALEXEEVICH NOVAK JURY SfiledCriticalVICTOR ALEXEEVICH NOVAK JURY S
Priority to ES434172ApriorityCriticalpatent/ES434172A1/en
Publication of ES434172A1publicationCriticalpatent/ES434172A1/en
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
(AREA)
Abstract
A method of preparing phenolaldehyde foamed plastics comprising mixing a phenol-aldehyde oligomer, a low-boiling foaming agent, an acid catalyst containing sulfonic groups in the aromatic ring, and auxiliary additives, and foaming and then curing the resulting mixture without heat supply from the outside or with a moderate heating, characterized by using, as an auxiliary additive, a metal complexing compound in the form of oxides, hydroxides, salts or mixtures thereof. (Machine-translation by Google Translate, not legally binding)
ES434172A1975-01-271975-01-27A method of preparing foamed plastics of phenolaldehyde. (Machine-translation by Google Translate, not legally binding)
ExpiredES434172A1
(en)
A new method for the preparation of (3-trifluorometilfenoxi) (4-chlorofenil) acetate of 2-acetamidoetilo. (Machine-translation by Google Translate, not legally binding)