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US4808472A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluoropolyethers containing end groups endowed with anchoring capacity

Assignee: Montedison SpA
•
Filing: 1987-10-23
•
Granted: 1989-02-28
•
Expires: 2007-10-23
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Abstract

Abstract Compounds suitable for being used as lubricants, having general formula: RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L, (I) or R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O) z--CFX--L , (II) where R=--CF 3 , --C 2 F 5 , --C 3 F 7 X=F, --CF 3 R"=F, --CF 3 , --C 2 F 5 m=an integer from 3 to 100 n=a finite integer, or=zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 to 20 and R is preferably=CF 3 , if n=zero, R is preferably --C 2 F 5 or --C 3 F 7 x=a finite integer, or=zero y, z=finite integers, such that x+y+z ranges from 5 to 200, while (x+z)/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.05 and y+z ranges from 5 to 200 n while X is preferably F, and R"=L L=group A--Y, where A=--CH 2 O--, --CH 2 --O--CH 2 , --CF 2 , --CF 2 O, Y=an organic radical covered by one of the following formulas: ##STR1## R 1 , R 2 =alkyls C 1 -C 3 , E=CHR 3 or --CH 2 --CHR 3 B=H or a radical OR 3 , R 3 =H or an alkyl C 1 -C 3 .

Inventors

  • 👤 Gerardo Caporiccio
  • 👤 Ezio Strepparola
  • 👤 Mario A. Scarati

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 12:40
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/38; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/225; C07D; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/54; C08; C08G; C08G65/00; C08G65/002; C08G65/005; C08G65/007; C08G65/02; C08G65/32; C08G65/329; C08G65/337; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/71; G11B5/72; G11B5/725; G11B5/7253; G11B5/7257; C10M2213/00; C10M2213/04; C10M2213/06; C10N; C10N2040/00; C10N2040/02; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 258 words
Magnetic recording media provided with a coating on the whole surface thereof having a thickness of from a few tens to a few thousands of Angstrom units, and comprising at least one compound selected from the class of compounds having the formula: RO(C.sub.3 F.sub.6).sub.m --(CFXO).sub.n --CFX--L, (I) and R"CFXO--(C.sub.3 F.sub.6 O).sub.x --(CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L, (II) where R=--CF 3 , --C 2 F 5 , --C 3 F 7 , X=F, --CF 3 , R"=F, --CF 3 , --C 2 F 5 , m=an integer from 3 to 100, n=an integer, either finite or equal to zero, where m+n ranges from 3 to 100, provided that, if n is finite, then m/n ranges from 5 to 20 and R is preferably --CF 3 , while if n=zero, R is preferably --C 2 F 5 or --C 3 F 7 , x=an integer, either finite or equal to zero, y,z=finite integers, such that x+y+z ranges from 5 to 200, while x+z ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200, while x is preferably F, and R"=L, L=a group of A--Y, where A=--CH 2 O--, --CH 2 --O--CH 2 , --CF 2 , --CF 2 O--, Y=an organic radical having one of the following formulas: ##STR7## where R 1 , R 2 =C 1 -C 3 alkyl, E=--CHR 3 -- or --CH 2 --CHR 3 --, R 3 =H or an alkyl C 1 -C 3 , and B=H or a radical --OR 3 .
Claim 2
Dependent Claim 258 words
Magnetic recording media provided with a coating on the whole surface thereof having a thickness of from a few tens to a few thousands of Angstrom units, and comprising at least one compound selected from the class of compounds having the formula: RO(C.sub.3 F.sub.6).sub.m --(CFXO).sub.n --CFX--L, (I) and R"CFXO--(C.sub.3 F.sub.6 O).sub.x --(CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L, (II) where R=--CF 3 , --C 2 F 5 , --C 3 F 7 , X=F, --CF 3 , R"=F, --CF 3 , --C 2 F 5 , m=an integer from 3 to 100, n=an integer, either finite or equal to zero, where m+n ranges from 3 to 100, provided that, if n is finite, then m/n ranges from 5 to 20 and R is preferably --CF 3 , while if n=zero, R is preferably --C 2 F 5 or --C 3 F 7 , x=an integer, either finite or equal to zero, y,z=finite integers, such that x+y+z ranges from 5 to 200, while x+z ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200, while x is preferably F, and R"=L, L=a group of A--Y, where A=--CH 2 O--, --CH 2 --O--CH 2 , --CF 2 , --CF 2 O--, Y=an organic radical having one of the following formulas: ##STR7## where R 1 , R 2 =C 1 -C 3 alkyl, E=--CHR 3 -- or --CH 2 --CHR 3 --, R 3 =H or an alkyl C 1 -C 3 , and B=H or a radical --OR 3 .
Claim 3
Dependent Claim 42 words
A mixture including at least one of the compounds according to claim 1 and at least one neutral perfluoropolyether having perfluoroalkyl end groups, said perfluoropolyether being present in the mixture in an amount of from about 50% to about 99% by weight.

References Cited (Backward Citations)

US4268556A Cited
US4267238A Cited
US4696845A Cited
US4692378A Cited
US4722859A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-02-28 1992-08-29 1993-02-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-02-28 1996-08-29 1997-02-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-02-28 2000-08-29 2001-02-28 $7700.00 Window Closed / Lapsed

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