Fluoropolyether group containing compound and method for producing the same
AssigneeDaikin Industries, Ltd.
InventorsKentarou Hiraga, Akinari Sugiyama, Fumihiko Yamaguchi, Takashi Nomura, Shouta Shibutani, Shingo Okuno
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Abstract
A fluoropolyether-containing compound of the following formula (1a): Ra—R2—R1—Rb (1a) wherein the symbols are as defined in the specification. Also disclosed is a fluoropolyether-containing compound of the following formula (1b): Ra—R2′—R1—Rb (1b), as well as a method for producing a compound of the formula (A): FOC—R2—R1—COOR12 (A) wherein the symbols are as defined in the specification.
Claims10
A fluoropolyether-containing compound of the following formula (1a):
- wherein
- Ra is COF, COOR11, CH2OH, or CHO;
- Rb is COF, COOR11, CH2OH, or CHO;
- wherein Ra and Rb are groups different from each other;
- R11 is each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine;
- R1 is a perfluoroalkylene group having 2 to 10 carbon atoms;
- R5a is CF2CF2CH2;
- R6a is a linear alkylene group having 1 to 9 carbon atoms substituted with fluorine;
- and
- n is an integer of 2 to 200.
A fluoropolyether-containing compound of the following formula (1b):
- wherein
- Ra is COF, COOR11, CH2OH, or CHO;
- Rb is COF, COOR11, CH2OH, or CHO;
- provided that
- if Ra is COF or COOR11, Rb is CH2OH or CHO, or
- if Rb is COF or COOR11, Ra is CH2OH or CHO;
- R11 is each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine;
- R1 is an a perfluoroalkylene group having 2 to 10 carbon atoms;
- R2′ is —R6b—(OR5b)n—O—;
- R5b is CF2CF2CH2;
- R6b is CF2CH2;
- and
- n is an integer of 2 to 200.
A method for producing a compound of the formula (A):
- wherein
- R1 is a perfluoroalkylene group having 2 to 10 carbon atoms;
- R2 is —R6—(OR5)n—O—;
- R5 is a linear alkylene group having 2 to 10 carbon atoms substituted with fluorine;
- R6 is a linear alkylene group having 1 to 9 carbon atoms substituted with fluorine;
- R12 is an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine;
- and
- n is an integer of 2 to 200,
- the method comprising:
- reacting an acid fluoride compound of the formula (a):
- wherein
- R13 is an alkylene group having 1 to 9 carbon atoms optionally substituted with fluorine;
- and
- R12 is an alkyl group having 1 to 6 carbon atoms optionally substituted with fluorine,
- with a cyclic ether compound of the formula (b):
- wherein R15 is a linear alkylene group having 2 to 10 carbon atoms substituted with fluorine.
Dependencies are inferred from the claim text.