PRODUCTION METHOD OF FLUORINE RESIN

To provide a fluorine resin reduced in coloration when heating, and a production method of a fluorine resin.SOLUTION: A fluorine resin includes a residue unit represented by the following general formula (1), where a total of contents of chromium, iron, and nickel is 500 mass ppb or less. In the for...

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Hauptverfasser:	SHIMONO TOMOYA, SAKAGUCHI KOTA, IWANAGA KAZUYA, TANABIKI MASAO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a fluorine resin reduced in coloration when heating, and a production method of a fluorine resin.SOLUTION: A fluorine resin includes a residue unit represented by the following general formula (1), where a total of contents of chromium, iron, and nickel is 500 mass ppb or less. In the formula (1), Rf1, Rf2, Rf3, and Rf4 are each independently a linear, branched, or cyclic perfluoroalkyl group which may have a fluorine atom, or a C1-7 ethereal oxygen atom. Further, Rf1, Rf2, Rf3, and Rf4 may be combined with each other to form a perfluoro aliphatic ring which may have a C4-8 ethereal oxygen atom.SELECTED DRAWING: None 【課題】加熱時の着色を低減したフッ素樹脂およびフッ素樹脂の製造方法を提供する。【解決手段】下記一般式（１）で表される残基単位を含み、クロム、鉄及び、ニッケルの含有量の合計が５００質量ｐｐｂ以下であることを特徴とするフッ素樹脂。【化１】JPEG2024054374000015.jpg29140（式（１）中、Ｒｆ１、Ｒｆ２、Ｒｆ３、Ｒｆ４はそれぞれ独立してフッ素原子または炭素数１～７のエーテル性酸素原子を有していても良い直鎖状、分岐状または環状のパーフルオロアルキル基を示す。また、Ｒｆ１、Ｒｆ２、Ｒｆ３、Ｒｆ４は互いに連結して炭素数４以上８以下のエーテル性酸素原子を有していてもよいパーフルオロ脂肪族環を形成してもよい。）【選択図】なし