ES225583A1 - A procedure for the selective polymerization of alpha-olefins. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the selective polymerization of alpha-olefins. (Machine-translation by Google Translate, not legally binding)
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Montedison SpA
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Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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Transition And Organic Metals Composition Catalysts For Addition Polymerization
(AREA)
Abstract
A process for the selective polymerization of alpha-olefins (R-CH-CH2), containing at least 3 carbon atoms by means of a catalyst consisting of a solid compound of one of the metals of the first subgroup of groups IV , V and VI of the periodic system, with an atomic index greater than 22, said catalyst containing at least the surface bonds between alkyl groups and polyvalent metals, which comprises carrying out the polymerization in a more selective way towards the production of polymers Linear elevations of regular structure, with the asymmetric carbons of the main chain oriented in the same way ("isotactic"), which generally have a high tendency to crystallize, using the catalyst in the solid, sparse form and towards the production of amorphous high polymers (substantially unbranched by longer branches than the R group attached to the monomer) using the catalyst in high state dispersion, preferably in suspension in a solvent for the olefin. (Machine-translation by Google Translate, not legally binding)
ES0225583A1954-12-161955-12-15A procedure for the selective polymerization of alpha-olefins. (Machine-translation by Google Translate, not legally binding)
ExpiredES225583A1
(en)
Procedure for the production of polymers of alfaolephines of elevated molecular weight substantially linear, solid and crystalline (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of polymers of high molecular weight of acetylene hydrocarbons (Machine-translation by Google Translate, not legally binding)