ethylene is an important basic building block of the petrochemical industry. the production and recovery of large quantities of olefins from petroleum refinery off-gases first started with the advent of catalytic cracking. rapid growth in the demand for petrochemicals necessitated the setting up of...
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when the researchers obtained a product (polymerized amide, from which the name polyamide) by condensation of molecules presenting two reactive aminic groups (hexamethylenediamine) with molecules characterized by two carboxylic reactive groups (adipic acid). in order to be differentiated from other polymers...
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