Mold addition polymerization of norbornene-type monomers...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C526S134000, C526S169100, C526S171000, C526S090000, C526S192000, C526S196000, C526S226000, C526S340300

Reexamination Certificate

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06936672

ABSTRACT:
A catalyst system and a process for the bulk addition polymerization or of polycyclic olefins, such as norbornene, methylnorbornene, ethylnorbornene, butylnorbornene or hexylnorbornene, 1,2,3,4,4a,5,8,8a-octahydro-1,4:5,8-dimethanonapthalene, 5,5′-(1,2-ethanediyl)bisbicyclo[2.2.1]hept-2-ene, and 1,4,4a,4b,5,8,8a,8b-octahydro-1,4:5,8-dimethanobiphenylene are disclosed. The catalyst includes an organonickel or organopalladium transition metal procatalyst and an activator compound. Polymerization can be carried out in a reaction injection molding process to yield thermoplastic and thermoset molded polymeric articles possessing high glass transition temperatures.

REFERENCES:
patent: 4100338 (1978-07-01), Suld et al.
patent: 5071812 (1991-12-01), Kelsey
patent: 5629398 (1997-05-01), Okamoto et al.
patent: 5714556 (1998-02-01), Johnson et al.
Grant & Hackh's Chemical Dictionary, Fifth Edition, McGraw-Hill (1987) 290.
R. Chang, Chemistry Third Edition, McGraw-Hill (1988) 9.

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