N-cycloalkyl norbornene dicarboximide polymers

Details N-cycloalkyl norbornene dicarboximide polymers N-cycloalkyl norbornene dicarboximide polymers

1990-12-19

1991-09-17

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526259, 525279, C08F12240, C08F12606, C08F27102

Patent

active

050496328

ABSTRACT:
Polymers of N-cycloalkyl norbornene dicarboximides exhibit high glass transition temperature, low moisture pickup and low dielectric permittivity. Poly(N-cyclohexyl norbornene dicarboximide) has a Tg of 280.degree. C., dielectric constant of about 2.5 and boiling water equilibrated weight gain of only about 2%. Monomers have melting point less than 150.degree. C. and are advantageously prepared by melt polymerization with conventional metathesis ring-opening polymerization catalysts.

REFERENCES:
patent: 3959234 (1976-05-01), Kurosawa et al.
patent: 4022954 (1977-05-01), Kurosawa et al.
patent: 4965330 (1990-10-01), Asrar
K. F. Castner and N. Calderon, "Journal of Molecular Catalysis", 15 (1982), 47-59.
C. J. Hardiman, "Metathesis Polymerization Catalyst", (U.S. Ser. No. 07/531,663).
J. Asrar, "Norbornene Dicarboximide Polymers", (U.S. Ser. No. 07/196,992).

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