TETRAFLUOROETHYLENE POLYMER AND AQUEOUS DISPERSION THEREOF

Title:

TETRAFLUOROETHYLENE POLYMER AND AQUEOUS DISPERSION THEREOF

Document Type and Number:

WIPO Patent Application WO/2007/119829

Kind Code:

A1

Abstract:

A TFE polymer capable of giving a stretch film excellent in homogeneity. It is a tetrafluoroethylene polymer which has stretchability, is processable in a nonmelted state, and has a normal specific gravity of 2.140-2.165. The tetrafluoroethylene polymer is characterized in that when an unburned sample of the polymer which has not been heated to a temperature of 300°C or higher is analyzed with a differential scanning calorimeter at a heating rate of 2 °C/min, it gives a heat-of-fusion curve in which the ratio of the endotherm S2 (mJ/mg) in the range of from the temperature (T0 °C) which is lower by 2.5°C than the temperature Tp (°C ) corresponding to a maximum (provided that 340≤Tp≤345) to 350°C to the endotherm S1 (mJ/mg) in the range of from 320°C to T0 (°C), [S2/S1], is 0.90 or higher.

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Inventors:

KASAI SHUNJI (JP)
ONO MAKOTO (JP)
YAMANAKA TAKU (JP)
SAWADA YASUHIKO (JP)

Application Number:

PCT/JP2007/058189

Publication Date:

October 25, 2007

Filing Date:

April 13, 2007

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
KASAI SHUNJI (JP)
ONO MAKOTO (JP)
YAMANAKA TAKU (JP)
SAWADA YASUHIKO (JP)

International Classes:

C08F14/26; C08L27/18

Foreign References:

JP2002201218A	2002-07-19
JP2002201217A	2002-07-19
JPH1053624A	1998-02-24
JP2000143727A	2000-05-26
JP2002201217A	2002-07-19
US4576869A	1986-03-18
JPS5839443A	1983-03-08

Other References: