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US4836944A
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Halogen-containing polyether and its use
Assignee: Daikin Industries Ltd
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Filing: 1988-06-01
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Granted: 1989-06-06
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Expires: 2008-06-01
Abstract
Abstract A halogen-containing polyether which comprises a repeating unit structure of the formula: --(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a --(CHClCF.sub.2 CF.sub.2 O).sub.b --(CCl 2 CF 2 CF 2 O) c --(CHFCF 2 CF 2 O) d --(CFClCF 2 CF 2 O) e --(CF 2 CF 2 CF 2 O) f --(I) wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations: 2≦a+b+c+d+e+f≦200 and 1≦a+c+d+f and at least one terminal group selected from the group consisting of groups represented by the formulas: --CH.sub.2 OH, --COOR.sup.1, --CONR.sup.1.sub.2, --COOOR.sup.2 Ph and --R 2 Ph wherein R 1 is a hydrogen atom, a C 1 -C 5 alkyl group or an aromatic group, R 2 is a divalent organic group and Ph is an aromatic group, which has good lubricating properties.
Inventors
- 👤 Takashi Tohzuka
- 👤 Sueyoshi Ishikawa
- 👤 Katsuyoshi Kubo
- 👤 Yoshitaka Honda
- 👤 Yukio Ohmure
- 👤 Norio Kataoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:13
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/002; C08G65/005; C08G65/02; C08G65/32; C10; C10M; C10M107/00; C10M107/38; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/71; C10M2213/00; C10M2213/04; C10M2213/06; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/175; C10N2040/18; C10N2040/185; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A halogen-containing polyether which comprises a repeating unit structure of the formula: --(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a --(CHClCF.sub.2 CF.sub.2 O).sub.b --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c --(CHFCF.sub.2 CF.sub.2 O).sub.d --(CFClCF.sub.2 CF.sub.2 O).sub.e --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --(I) wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations: 2≦a+b+c+d+e+f≦200 and 1≦a+c+d+f and at least one terminal group selected from the group consisting of groups represented by the formulas: --CH.sub.2 OH, --COOR.sup.1, --CONR.sub.2.sup.1, --COOOR.sup.2 Ph and --R.sup.2 Ph wherein R 1 is a hydrogen atom, a C 1 -C 5 alkyl group or an aromatic group, R 2 is a divalent organic group and Ph is an aromatic group.
Claim 2
Dependent Claim
114 words
A halogen-containing polyether which comprises a repeating unit structure of the formula: --(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a --(CHClCF.sub.2 CF.sub.2 O).sub.b --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c --(CHFCF.sub.2 CF.sub.2 O).sub.d --(CFClCF.sub.2 CF.sub.2 O).sub.e --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --(I) wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations: 2≦a+b+c+d+e+f≦200 and 1≦a+c+d+f and at least one terminal group selected from the group consisting of groups represented by the formulas: --CH.sub.2 OH, --COOR.sup.1, --CONR.sub.2.sup.1, --COOOR.sup.2 Ph and --R.sup.2 Ph wherein R 1 is a hydrogen atom, a C 1 -C 5 alkyl group or an aromatic group, R 2 is a divalent organic group and Ph is an aromatic group.
Claim 3
Dependent Claim
29 words
The halogen-containing polyether according to claim 1, wherein the repeating unit structure consists of the repeating units of the formula: --(CF 2 CF 2 CF 2 O) a --.
Claim 4
Dependent Claim
35 words
The halogen-containing polyether according to claim 1, wherein the repeating unit structure consists of the repeating units of --(CF 2 CF 2 CF 2 O) a -- and --(CHFCF 2 CF 2 o) d --.
Claim 5
Dependent Claim
10 words
A lubricant comprising a halogen-containing polyether according to claim 1.
Claim 6
Dependent Claim
15 words
A lubricant for a magnetic recording medium comprising a halogen-containing polyether according to claim 1.
Claim 7
Dependent Claim
58 words
A composition comprising 0.01 to 0.5% by weight of a halogen-containing polyether according to claim 1 and 99.99 to 99.5% by weight of a mixed solvent consisting of 1 to 10 parts by weight of trichlorotrifluoroethylene and 10 to 1 parts by weight of at least one solvent selected from the group consisting of tetrachlorodifluoroethane, tetrachlorohexafluorobutane and dichlorooctafluorobutane.
References Cited (Backward Citations)
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