Process for preparing shaped article having thick section

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material

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264237, 2643282, 2643286, 26432816, 26432617, 26432818, 26433112, 26433113, 26433115, 26433117, 525290, 526283, B29C 4578, C08F 3200

Patent

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049523481

ABSTRACT:
Process for preparing a pore-free polynorbornene product by bulk polymerizing a monomer charge containing at least one norbornene monomer having tricyclic or higher cyclic structure with a metathesis catalyst by controlling maximum exotherm temperature to a level of 160.degree. C. or below or by controlling the temperature difference to 80.degree. C. or below between the inner and exterior temperatures during the cooling period of said product from the maximum exotherm to the glass transition temperature of said product.

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patent: 4380617 (1983-04-01), Minchak et al.
patent: 4426502 (1984-01-01), Minchak
patent: 4440340 (1983-08-01), Klosiewicz
patent: 4481344 (1984-11-01), Newburg
patent: 4507453 (1985-03-01), Tom
patent: 4598102 (1986-07-01), Leach
patent: 4657981 (1987-04-01), Klosiewicz
patent: 4661575 (1987-04-01), Tom
patent: 4708969 (1987-11-01), Leach
patent: 4748216 (1988-05-01), Tom

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