NO743567L
A method of preparing a phenolaldehyde foamed plastic which involves mixing (1) a phenolaldehyde oligomer, such as a resol-type resin, or a mixture of such a resol-type resin with a novolac-type resin, (2) an acidic catalyst, such as an oligomeric product obtained by the treatment of an aromatic sul...
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| creator | BARANOV VSEVOLOD V VALGIN VASILY D MURASHOV JURY S NOVAK VIKTOR A |
| description | A method of preparing a phenolaldehyde foamed plastic which involves mixing (1) a phenolaldehyde oligomer, such as a resol-type resin, or a mixture of such a resol-type resin with a novolac-type resin, (2) an acidic catalyst, such as an oligomeric product obtained by the treatment of an aromatic sulphoacid with formaldehyde, or an oligomeric product obtained by the treatment of an aromatic sulphoacid with formaldehyde and a nitrogen-containing compound, such as urea, aniline, and 4.4-diaminodiphenolmethane, (3) a compound of a complex-forming metal, such as cobalt, magnesium, manganese, vanadium, chromium, nickel, copper, iron, titanium, and lead, in the form of its oxide, hydroxide, salt, or mixtures thereof, (4) a surfactant, and (5) a foaming agent. The resulting mixture is foamed and cured at a temperature up to 100 DEG C. Introduction of the complex-forming metal insures improved water-resistance of the resulting foamed plastic. |
| format | Patent |
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The resulting mixture is foamed and cured at a temperature up to 100 DEG C. 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The resulting mixture is foamed and cured at a temperature up to 100 DEG C. 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The resulting mixture is foamed and cured at a temperature up to 100 DEG C. Introduction of the complex-forming metal insures improved water-resistance of the resulting foamed plastic.</abstract><edition>2</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | NO743567L |
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