Amorphous polyether glycols based on bis-substituted oxetane monomers
AssigneesAerojet-General Corporation, OMNOVA Solutions Inc.
InventorsAslam Malik, Thomas Archibald, Roland Carlson, Kenneth Wynne, Edward Kresge
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Abstract
This invention is directed to mono- and bis-substituted oxetane monomers having fluorinated alkoxymethylene side chains, hydroxy-terminated prepolymers derived from these mono- and bis-substituted oxetane monomers and tetrahydrofuran (THF), and polymers produced from these prepolymers, as well as the synthesis processes associated with each, and the use of the monomers, prepolymers and ultimate polymers, both directly and as components of numerous compositions.
Claims24
1-59. (canceled)
A fluorinated polyurethane elastomer having FOX/THF segments and comprising a mixture of monomeric units having the general formulae:
- wherein:
- n is independently selected and is 1 to 3;
- Rf1 and Rf2 are independently selected from the group consisting of linear and branched perfluorinated alkyls having 1-20 carbon atoms, and oxaperfluorinated polyethers having from about 4-20 carbon atoms;
- R1 is a divalent hydrocarbyl radical;
- x is 1-250;
- z is 1-250;
- and
- w is 1-250.
A fluorinated polyurethane elastomer comprising a mixture of monomeric units having the general formulae:
- wherein:
- n is independently selected and is 1 to 3;
- R is selected from the group consisting of methyl and ethyl;
- Rf1, Rf2 and Rf3 are independently selected from the group consisting of linear and branched perfluorinated alkyls having 1-20 carbon atoms, and oxaperfluorinated polyethers having from about 4-20 carbon atoms;
- R1 is a divalent hydrocarbyl radical;
- x is 1-250;
- y is 1-250;
- z is 1-250;
- and
- w is 1-50.
A bis-substituted fluorinated oxetane monomer, said bis-substituted fluorinated oxetane monomer having the general formula:
- wherein:
- each n is independently selected and is 1 to 3;
- and
- Rf1 and Rf2 are independently selected from the group consisting of linear perfluorinated alkyl, linear perfluorinated isoalkyl, branched chain perfluorinated alkyl, branched chain perfluorinated isoalkyl, and oxaperfluorinated polyether having from 4 to about 60 carbons, said linear and branched alkyls and isoalkyls having from 1 to 20 carbons;
- with the proviso that Rf1 and Rf2 are different.
Dependencies are inferred from the claim text.