PROCEDE DE POLYMERISATION D'UNE A-OLEFINE

• Main Authors: IKAI SHIGERU, TAMURA MASANORI, INOUE TOKUJI, UENO HARUO, HARUO UENO, TAKEFUMI YANO, TOKUJI INOUE, SHIGERU IKAI, MASANORI TAMURA ET SAKAE YUASA, YUASA SAKAE, YANO TAKEFUMI
• Format: Patent
• Language: French
• Published: 12.06.1981
• 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

LA PRESENTE INVENTION CONCERNE UN PROCEDE DE POLYMERISATION D'UNE A-OLEFINE ET PLUS PARTICULIEREMENT D'UNE A-OLEFINE AYANT AU MOINS TROIS ATOMES DE CARBONE. CE PROCEDE EST CARACTERISE EN CE QUE L'ON MET EN CONTACT, EN PRESENCE D'UN ESTER D'ACIDE ORGANIQUE, UN PRODUIT D'ALIMENTATION CONTENANT AU MOINS UNE A-OLEFINE, AYANT AU MOINS TROIS ATOMES DE CARBONE, AVEC UN CATALYSEUR COMPOSE D'UNE PART D'UN INGREDIENT CATALYTIQUE SOLIDE, QUI A ETE PREPARE DE TELLE MANIERE QUE L'ON FAIT REAGIR UN COMPOSE ALUMINOSILOXY DE FORMULE:(CF DESSIN DANS BOPI)DANS LAQUELLE X REPRESENTE UN ATOME DE CHLORE, DE BROME OU D'IODE, AVEC UN COMPOSE DE GRIGNARD DE FORMULE RMGX(II) DANS LAQUELLE R REPRESENTE UN RADICAL ALKYLE AYANT DE 1 A 8ATOMES DE CARBONE ET X REPRESENTE UN ATOME D'HALOGENE, ON MET EN CONTACT LE PRODUIT REACTIONNEL SOLIDE RESULTANT AVEC UN TETRAHALOGENURE DE TITANE, ON TRAITE LE PRODUIT SOLIDE RESULTANT CONTENANT DU TITANE AVEC UN ESTER D'ACIDE ORGANIQUE, ET ON MET LE PRODUIT SOLIDE AINSI TRAITE EN CONTACT AVEC UN TETRAHALOGENURE DE TITANE, ET, D'AUTRE PART D'UN ALUMINIUM TRIALKYLE. An alpha -olefin polymer having an excellent H.I. is produced with a high yield by bringing, in the presence of an organic acid ester, a feed containing at least one alpha -olefin, having 3 or more carbon atoms, into contact with a catalyst composed of: a solid catalytic ingredient which has been prepared in such a manner that an aluminosiloxy compound of the formula, [1] wherein X1 represents a chlorine atom, a bromine atom or an iodine atom, is reacted with a Grignard compound of the formula R1MgX2[II] wherein R1 represents an alkyl radical having 1 to 8 carbon atoms and X2 represents a halogen atom, the resultant solid reaction product is brought into contact with a titanium tetrahalide, the resultant titanium-containing solid product is treated with an organic acid ester, and the treated solid product is brought into contact with a titanium tetrahalide; and a trialkyl aluminum.