ANIONIC POLYMERIZATION INITIATOR, ELASTOMER OBTAINED USING THE SAME, AND ELASTOMER PRODUCT

• Main Authors: TORISUTORAMU DABURIYUU BESEA, UIRIAMU ERU HAAGENROZAA, JIYON EMU DOSHIYAKU
• Format: Patent
• Language: English
• Published: 05.11.1992
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

PURPOSE:To obtain an anionic polymerization initiator useful for obtaining low-hysteresis polymers by mixing an initiator with a reaction product obtained by reacting a specific organotin compound with Li metal in predetermined proportions in the presence of a suitable solvent. CONSTITUTION:An anionic polymerization initiator which comprises a reaction product obtained by reacting about 93-99wt.% organotin compound selected from tin halides each substituted with three organic groups and ditin compounds each having a tin-tin bond and substituted with six organic groups (e.g. tributyltin chloride) with about 1-7wt.% Li metal in the presence of a suitable solvent (e.g. tetrahydrofuran).