Process for the preparation of 1,2-polybutadiene
Abstract
Abstract A PROCESS FOR THE PREPARATION OF 1,2-POLYBUTADIENE WHICH COMPRISES POLYMERIZING 1,3-BUTADIENE IN THE LIQUID PHASE IN THE PRESENCE OF A CATALYST COMPOSITION COMPOSED OF: (A) A COBALT COMPOUND, (B) AN ORGANOALUMINUM COMPOUND OF THE FORMULA, AIR3, IN WHICH R IS A HYDROCARBON RADICAL OF 1 TO 6 CARBON ATOMS, AND (C) CARBON DISULFIDE, AND OPTIONALLY (D) A NITRILE COMPOUND OF THE FORMULA, R(CN)N IN WHICH R IS AN ALKYL OF 1 TO 10 CARBON ATOMS, AN ARALKYL OF 7 TO 10 CARBON ATOMS, OR AN ARYL OF 6 TO 12 CARBON ATOMS, AND N IS 1 OR 2. SYNDIOTACTIC 1,2-POLYBUTADIENE OBTAINED FROM SUCH PROCESS HAS AN INTRINSIC VISCOSITY (N) MEASURED IN 135*C. TETRALIN OF AT LEAST 0.3, AND A MELTING POINT MEASURED WITH DIFFERENTIAL SCANNING CALORIMETER OF AT LEAST 200*C.
Inventors
- 👤 H Hamada
- 👤 S Sugiura
- 👤 H Ueno
Bibliographic Details
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