Method of polymerizing exo-methylene cyclic organic compounds us

Details Method of polymerizing exo-methylene cyclic organic compounds us Method of polymerizing exo-methylene cyclic organic compounds us

1992-10-16

1994-04-05

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526170, 526308, C03G 6106, C08F 464

Patent

active

053005988

ABSTRACT:
The regiospecific (1,2-Me.sub.2 C.sub.5 H.sub.3).sub.2 ZrMe.sup.+ MeB(C.sub.6 F.sub.5).sub.3.sup.- mediated ring-opening polymerization of methylenecyclobutane and its copolymerization with ethylene to polyolefins of microstructure--{CH.sub.2 CH.sub.2 CH.sub.2 C(CH.sub.2)]--.sub.n and {--[CH.sub.2 CHR]--.sub.x [CH.sub.2 CH.sub.2 CH.sub.2 C(CH.sub.2)]--.sub.y }.sub.n' respectively, is disclosed.

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 methyleneyclobutane 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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