Method for catalytic polymerization of substituted acrylates

Details Method for catalytic polymerization of substituted acrylates Method for catalytic polymerization of substituted acrylates

1993-02-26

1994-05-17

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526128, 526134, 526160, 526170, 526185, 526190, 526328, 5263297, 5263031, 5263183, C08F 416

Patent

active

053128818

ABSTRACT:
The synthesis, and use as catalysts of chiral organolanthanide complexes for polymerization of substituted acrylates are disclosed, having the structure [(C.sub.5 R'.sub.4-x R*.sub.x) A (C.sub.5 R".sub.4-y R'''.sub.y) M Q.sub.p ].sup.m, where x and y represent the number of unsubstituted locations on the cyclopentadienyl ring; R', R", R''', and R* represent substituted and unsubstituted alkyl groups having 1-30 carbon atoms and R* is a chiral ligand; A is a fragment containing a Group 13, 14, 15, or 16 element of the Periodic Table; M is a Group 3, 4, 5, or lanthanide metal of the Periodic Table; and Q is a hydrocarbyl radical, aryl, hydrogen, amide radical, or halogen radical, with 3.gtoreq.p.gtoreq.o; and m=o or +1.

REFERENCES:
Pinazzi, et al, "Polymerization of Methylenecyclobutane, Synthesis of an Isopolyisoprene," Die Makromolekulare Chemie 122 (1969), pp. 105-122.
Takemoto, et al., "Vinylpolymerisation," Die Makromolekulare Chemie 109 (1967), pp. 81-86.
Rossi, et al., "On the Ring-Opening Polymerization of Methylenecyclobutane," Macromolecules, vol. 5, No. 3, (1972), pp. 247-249.
Pinazzi, et al., "Polymerisation du methyleneeyclobutane Obtention de l'isocaoutchouc," Die Makromolekulare Chemie 147 (1971), pp. 15-33.
Hiraguri, et al., "Radical Polymerization of 3-Substituted-1-Methylenecyclobutanes," Journal of Polymer Science, vol. 26 (1988), pp. 381-384.

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