Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material
Patent
1988-09-12
1990-08-28
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling heat transfer with molding material
264237, 2643282, 2643286, 26432816, 26432617, 26432818, 26433112, 26433113, 26433115, 26433117, 525290, 526283, B29C 4578, C08F 3200
Patent
active
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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Chono Koji
Ishimaru Yoshiharu
Yamato Motoyuki
Kap George A.
Nippon Zeon Co. Ltd.
Shust Nestor W.
Tentoni Leo B.
Thurlow Jeffery
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