PROCESS FOR THE PREPARATION OF BRANCHED POLYBUTADIENE WITH A HIGH CONTENT OF 1,4-CIS UNITS
Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cy-clo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium solu-ble in the process solvent containing a variable quanti...
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| creator | VIOLA, GIAN TOMMASO ZINNA, MARIANNA |
| description | Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cy-clo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium solu-ble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al-Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.
Cette invention concerne un procédé de préparation du polybutadiène par polymérisation de butadiène dans un solvant aliphatique et/ou cycloaliphatique en présence d'un système catalytique préparé in situ qui comprend : (i) un carboxylate de néodyme soluble dans le solvant de procédé contenant une quantité variable d'eau, le rapport molaire H2O/Nd variant de 0,001/1 à 0,50/1 ; (ii) un composé alkyle d'aluminium ; (iii) un composé alkyle d'aluminium contenant au moins une liaison dAl qui est une liaison Al-Cl ; le rapport molaire Al/Nd total variant de 4/1 à 12/1, et le rapport molaire Cl/Nd, de 2/1 à 6/1. |
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Cette invention concerne un procédé de préparation du polybutadiène par polymérisation de butadiène dans un solvant aliphatique et/ou cycloaliphatique en présence d'un système catalytique préparé in situ qui comprend : (i) un carboxylate de néodyme soluble dans le solvant de procédé contenant une quantité variable d'eau, le rapport molaire H2O/Nd variant de 0,001/1 à 0,50/1 ; (ii) un composé alkyle d'aluminium ; (iii) un composé alkyle d'aluminium contenant au moins une liaison dAl qui est une liaison Al-Cl ; le rapport molaire Al/Nd total variant de 4/1 à 12/1, et le rapport molaire Cl/Nd, de 2/1 à 6/1.</description><language>eng ; fre</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><creationdate>2017</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170912&DB=EPODOC&CC=CA&NR=2719728C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170912&DB=EPODOC&CC=CA&NR=2719728C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>VIOLA, GIAN TOMMASO</creatorcontrib><creatorcontrib>ZINNA, MARIANNA</creatorcontrib><title>PROCESS FOR THE PREPARATION OF BRANCHED POLYBUTADIENE WITH A HIGH CONTENT OF 1,4-CIS UNITS</title><description>Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cy-clo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium solu-ble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al-Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.
Cette invention concerne un procédé de préparation du polybutadiène par polymérisation de butadiène dans un solvant aliphatique et/ou cycloaliphatique en présence d'un système catalytique préparé in situ qui comprend : (i) un carboxylate de néodyme soluble dans le solvant de procédé contenant une quantité variable d'eau, le rapport molaire H2O/Nd variant de 0,001/1 à 0,50/1 ; (ii) un composé alkyle d'aluminium ; (iii) un composé alkyle d'aluminium contenant au moins une liaison dAl qui est une liaison Al-Cl ; le rapport molaire Al/Nd total variant de 4/1 à 12/1, et le rapport molaire Cl/Nd, de 2/1 à 6/1.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFyrEKwjAQANAsDqJ-g_cBdmgVqmN6vZiA5EJyRXQpReIkWqj_jwjuTm95c3UNkZFSAsMRxBKESEFHLY49sIEmao-WWgh8ujSd6NaRJzg7saDBuqMFZC_k5bvLza5Al6DzTtJSze7DY8qrnwu1NiRoizy--jyNwy0_87tHXdXloa72uP0_PlUYMFk</recordid><startdate>20170912</startdate><enddate>20170912</enddate><creator>VIOLA, GIAN TOMMASO</creator><creator>ZINNA, MARIANNA</creator><scope>EVB</scope></search><sort><creationdate>20170912</creationdate><title>PROCESS FOR THE PREPARATION OF BRANCHED POLYBUTADIENE WITH A HIGH CONTENT OF 1,4-CIS UNITS</title><author>VIOLA, GIAN TOMMASO ; ZINNA, MARIANNA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA2719728C3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2017</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>VIOLA, GIAN TOMMASO</creatorcontrib><creatorcontrib>ZINNA, MARIANNA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VIOLA, GIAN TOMMASO</au><au>ZINNA, MARIANNA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PROCESS FOR THE PREPARATION OF BRANCHED POLYBUTADIENE WITH A HIGH CONTENT OF 1,4-CIS UNITS</title><date>2017-09-12</date><risdate>2017</risdate><abstract>Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cy-clo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium solu-ble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al-Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.
Cette invention concerne un procédé de préparation du polybutadiène par polymérisation de butadiène dans un solvant aliphatique et/ou cycloaliphatique en présence d'un système catalytique préparé in situ qui comprend : (i) un carboxylate de néodyme soluble dans le solvant de procédé contenant une quantité variable d'eau, le rapport molaire H2O/Nd variant de 0,001/1 à 0,50/1 ; (ii) un composé alkyle d'aluminium ; (iii) un composé alkyle d'aluminium contenant au moins une liaison dAl qui est une liaison Al-Cl ; le rapport molaire Al/Nd total variant de 4/1 à 12/1, et le rapport molaire Cl/Nd, de 2/1 à 6/1.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | PROCESS FOR THE PREPARATION OF BRANCHED POLYBUTADIENE WITH A HIGH CONTENT OF 1,4-CIS UNITS |
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