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A fluorine-containing thermoplastic resinous polymer which consist essentially of a group (a) of repeating units of a cyclic structure to be represented by the following general formula: [Figure] (where: n is an integer of 1 to 2); the polymer having a molecular weight such that the intrinsic viscos

A fluorine-containing thermoplastic resinous polymer which consist essentially of a group (a) of repeating units of a cyclic structure to be represented by the following general formula: [Figure] (where: n is an integer of 1 to 2); the polymer having a molecular weight such that the intrinsic viscosity thereof may become at least 0.1. A fluorine-containing thermoplastic resinous polymer which consists essentially of: (i) a group (a) of repeating units to be represented by the following general formula: [Figure] (where: n is an integer of 1 or 2), and (ii) a group (b) of repeating units to be represented by the following general formula: －CF2－CFX)－ (where: X is selected from fluorine, chlorine. O－CF2CF2CF3, O－CF2CF(CF3)OCF2CF2SO2F, and O－CF2CF2CF2COOCH3) the polymer containing therein at least 80% by weight of the group of repeating units (a), and having a molecular weight such that the intrinsic viscosity thereof may be become at least 0.1.

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A fluorine-containing thermoplastic resinous polymer which consists essentially of (a) of repeating units of a cyclic structure represented by the following general formula: [Figure] where n is an integer of 1 or 2, said polymer having a molecular weight such that the intrinsic viscosity of the pol

A fluorine-containing thermoplastic resinous polymer which consists essentially of (a) of repeating units of a cyclic structure represented by the following general formula: [Figure] where n is an integer of 1 or 2, said polymer having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.