Institutul Naţional De Cercetare -Dezvoltare Pentru Chimie Şi Petrochimie - Icechim
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institutul Naţional De Cercetare -Dezvoltare Pentru Chimie Şi Petrochimie - IcechimfiledCriticalInstitutul Naţional De Cercetare -Dezvoltare Pentru Chimie Şi Petrochimie - Icechim
Priority to RO93-01292ApriorityCriticalpatent/RO111776B1/en
Publication of RO111776B1publicationCriticalpatent/RO111776B1/en
Procedeul pentru obţinerea bloc-copolimerilor cu secvenţe acrilice şi oxiranice, utilizaţi în electronică, microelectronică, industrie de automobile, aviaţie, conform invenţiei, constă în aceea că monomerul acrilic şi oxiranic se supune polimerizării ionic-coordinative, în prezenţă de catalizator organo-aluminiu amidic de tipul RAl(NR), în care R = alchil Cşi R = alchil Csauaril C, în mediu nepolar, la temperaturi cuprinse între -30 şi +25°C, urmată de dezactivarea şi stabilizarea soluţiei de polimer, îndepărtarea solventului şi uscarea polimerului.The process for obtaining block copolymers with acrylic and oxiranic sequences used in the electronics, microelectronics, automotive, aviation industry according to the invention consists in that the acrylic and oxiranic monomers undergo ionic-coordinating polymerization in the presence of an organo-aluminum amide catalyst of the type RA1 (NR), wherein R = alkyl C and R = Csauaryl C alkyl in non-polar medium at temperatures between -30 and + 25 ° C, followed by deactivation and stabilization of the polymer solution, removal of the solvent and drying of the polymer.
RO93-01292A1993-09-291993-09-29Preparation process for block-copolymers with acrylic and oxyranic sequences
RO111776B1
(en)
Metallocene compounds, catalyst system, processes for the preparation of such compounds and for the preparation of an olefin polymer, molded article and application of said compounds
METHOD OF OBTAINING SYNTHETIC POLYMERIZATES WITH A VERY LOW CONTENT OF THE RESIDUAL MONOMER, PRODUCTS OBTAINED ACCORDING TO THIS METHOD AND THEIR APPLICATION
METAL COMPLEXES CONTAINING CYCLOPENTADIENYL SUBSTITUTED BY HETEROATOMES IN POSITION 2, CATALYST SYSTEMS INCLUDING SUCH COMPLEXES; PROCESS TO POLYMERIZE OLEFINS BY APPLYING SUCH SYSTEMS; OLEFINS POLYMERIZATION PRODUCTS OBTAINED WITH SUCH PROCESS; THE
Catalyst for olefin polymerization, components of the catalyst, olefin polymerization method by the catalyst, film and injection molded article by the polyolefin