Polymerization initiators

• US 3,157,604 A
• Filed: 10/24/1960
• Issued: 11/17/1964
• Est. Priority Date: 10/24/1960
• Status: Expired due to Term

• Current Assignee: Charles W. Strobel
• Original Assignee: Charles W. Strobel
• Inventors: Strobel, Charles W.
• Application Number:
  US04/064,278
• Time in Patent Office: 1,485 Days
• US Class Current: 502/156
• CPC Class Codes: C07C 2/406 with hydrides or organic compounds
• CPC Class Codes: C07C 2523/04 Alkali metals
• CPC Class Codes: C07C 2531/02 containing organic compounds or metal hydrides
• CPC Class Codes: C07F 1/02 Lithium compounds
• CPC Class Codes: C08C 19/44 of polymers containing metal atoms exclusively at one or both ends of the skeleton
• CPC Class Codes: C08F 36/04 conjugated
• CPC Class Codes: C08F 4/12 of boron, aluminium, gallium, indium, thallium or rare earths
• CPC Class Codes: C08F 4/488 at least two lithium atoms in the same molecule

Claims

1. A METHOD OF PREPARING A POLYMERIZATION INITIATOR COMPOSITION WHICH COMPRISES CONTACTING LITHIUM WITH A MONOMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES HAVING 4 TO 12 CARBON ATOMS PER MOLECULE AND VINYLIDENE-SUBSTITUTED BENZENE AND NAPHTHALENE COMPOUNDS HAVING OTHER HYDROCARBON SUBSTITUENTS TOTALING UP TO 12 CARBON ATOMS IN A MEDIUM OF ETHER HAVING THE FORMULA R-O-R WHEREIN EACH R IS AN ALKYL GROUP CONTAINING FROM 2 TO 12 CARBON ATOMS IN THE PRESENCE OF ABOUT 0.005 TO 2 MOLES PER MOLE OF SAID MONOMER OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF POLYCYCLIC AROMATIC COMPOUNDS AND POLYARYL-SUBSTITUTED ETHYLENES CONTAINING FROM 2 TO 4 ARYL GROUPS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND NAPHTHYL AT ABOUT -40 TO 170*F. FOR AT LEAST ABOUT 10 MINUTES, THE AMOUNT OF SAID ETHER BEING ABOUT 1 TO 20 MOLES PER MOLE OF SAID MONOMER, AND THE RATIO OF LITHIUM TO MONOMER BEING AT LEAST ABOUT 1 GRAM ATOM OF LITHIUM PER MOLE OF MONOMER.