US5053536A
Expired / Lapsed
US
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Fluorination of acetals, ketals and orthoesters
Assignee: Exfluor Research Corp
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Filing: 1989-09-28
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Granted: 1991-10-01
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Expires: 2009-09-28
Abstract
Abstract This invention pertains to perfluoropolyethers and perhalogenated chlorofluoroether polymers that can be prepared by fluorinating polymers made by the polymerization of acetals, ketals, polyacetals, polyketals and orthoesters with elemental fluorine.
Inventors
- 👤 Thomas R. Bierschenk
- 👤 Timothy Juhlke
- 👤 Hajimu Kawa
- 👤 Richard J. Lagow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/30; C07; C07C; C07C41/00; C07C41/48; C07C41/60; C07C43/00; C07C43/30; C07C43/313; C07C43/315; C08G2/00; C08G2/30; C08G4/00; C08G65/002; C08G65/005; C08G65/007; C08G65/32; C08G65/321; C08G65/323; C08G65/3233; C08G65/3236; C08G65/34; C08G65/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
258 words
A perhalogenated polyether having an average formula: ##STR25## wherein Y and Y' are the same or different and are selected from the group consisting of linear and branched perfluoroalkylenes having at least 2 carbon atoms; perfluoroalkylenehypheratehereoxyalkylene and perfluoropoly(alkyleneoxyalkylene) each having alkylene groups containing at least two carbon atoms wherein in Y or Y' one or more of the fluorine atoms may be substituted by a halogen atom other than fluorine; wherein X and Z are the same or different and are selected from the group consisting of --(CF 2 ) r COF, --(CF 2 ) r OCF 3 , --(CF 2 ) r COOH and C r F 2r+1-q Cl q , wherein r is an integer from 1 to 12 and q is an integer from 0 to 25; wherein R 1 , R 2 , R 3 and R 4 are the same or different and are selected from the group consisting of --F, --Cl, --CF 2 Cl, --CFCl 2 , --CCl 3 , perfluoroalkyl of one to ten carbon atoms and perfluoroalkoxyalkyl of one to ten carbon atoms wherein one or more of the fluorine atoms may be substituted by a halogen atom other than fluorine; wherein n is an integer from 2 to 1,000; and wherein m is an integer from 0 to 1,000; provided that when R 1 , R 2 , R 3 and R 4 together are F, then Y or Y' comprises an ethylene group having at least one fluorine atom which is substituted by a halogen other than fluorine.
Claim 2
Dependent Claim
258 words
A perhalogenated polyether having an average formula: ##STR25## wherein Y and Y' are the same or different and are selected from the group consisting of linear and branched perfluoroalkylenes having at least 2 carbon atoms; perfluoroalkylenehypheratehereoxyalkylene and perfluoropoly(alkyleneoxyalkylene) each having alkylene groups containing at least two carbon atoms wherein in Y or Y' one or more of the fluorine atoms may be substituted by a halogen atom other than fluorine; wherein X and Z are the same or different and are selected from the group consisting of --(CF 2 ) r COF, --(CF 2 ) r OCF 3 , --(CF 2 ) r COOH and C r F 2r+1-q Cl q , wherein r is an integer from 1 to 12 and q is an integer from 0 to 25; wherein R 1 , R 2 , R 3 and R 4 are the same or different and are selected from the group consisting of --F, --Cl, --CF 2 Cl, --CFCl 2 , --CCl 3 , perfluoroalkyl of one to ten carbon atoms and perfluoroalkoxyalkyl of one to ten carbon atoms wherein one or more of the fluorine atoms may be substituted by a halogen atom other than fluorine; wherein n is an integer from 2 to 1,000; and wherein m is an integer from 0 to 1,000; provided that when R 1 , R 2 , R 3 and R 4 together are F, then Y or Y' comprises an ethylene group having at least one fluorine atom which is substituted by a halogen other than fluorine.
Claim 3
Dependent Claim
60 words
A perhalogenated polyether of claim 1, wherein Y and Y' are selected from the group consisting of --C 2 F 4 --; --C 3 F 6 --; --C 4 F 8 --; --C 5 F 10 --; C 6 F 12 --; --CF 2 CF(CF 3 )--; --CF 2 CF(C 2 F 5 )--; and --CF 2 CF(CF 2 Cl)--.
Claim 4
Dependent Claim
209 words
A perhalogenated polyether having an average formula: ##STR26## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and are selected from the group consisting of --F, --Cl, --CF 2 Cl, --CFCl 2 , --CCl 3 , perfluoroalkyl of one to ten carbon atoms and perfluoroalkoxyalkyl of one to ten carbon atoms wherein one or more of the fluorine atoms may be substituted by a halogen atom other than fluorine; wherein X and Z are the same or different and are selected from the group consisting of --(CF 2 ) r COF, --(CF 2 ) r OCF 3 , --(CF 2 ) r COOH and C r F 2r+1-q Cl q wherein r is an integer from 1 to 12 and q is an integer from 0 to 25; wherein n is an integer from 2 to 1000; m is an integer from 0 to 1000; p and t are the same or different and are integers from 1 to 50, provided that when p and t are one and R 1 , R 2 , R 3 and R 4 together are F, then R 5 or R 6 is a group other than fluorine.
Claim 5
Dependent Claim
209 words
A perhalogenated polyether having an average formula: ##STR26## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and are selected from the group consisting of --F, --Cl, --CF 2 Cl, --CFCl 2 , --CCl 3 , perfluoroalkyl of one to ten carbon atoms and perfluoroalkoxyalkyl of one to ten carbon atoms wherein one or more of the fluorine atoms may be substituted by a halogen atom other than fluorine; wherein X and Z are the same or different and are selected from the group consisting of --(CF 2 ) r COF, --(CF 2 ) r OCF 3 , --(CF 2 ) r COOH and C r F 2r+1-q Cl q wherein r is an integer from 1 to 12 and q is an integer from 0 to 25; wherein n is an integer from 2 to 1000; m is an integer from 0 to 1000; p and t are the same or different and are integers from 1 to 50, provided that when p and t are one and R 1 , R 2 , R 3 and R 4 together are F, then R 5 or R 6 is a group other than fluorine.
Claim 6
Dependent Claim
30 words
A perhalogenated polyether of claim 3, wherein m is zero; R 1 , R 2 , and R 5 are F and p is an integer between 2 and 50.
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