Examples of 'perfluoroalkyl group' in a sentence
Meaning of "perfluoroalkyl group"
perfluoroalkyl group - a group of man-made chemicals that are used in various industrial and consumer products. They are known for their water- and grease-resistant properties but have raised environmental and health concerns
How to use "perfluoroalkyl group" in a sentence
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perfluoroalkyl group
By perfluoroalkyl group is meant a saturated branched or linear carbon chain.
Rf group is preferably a perfluoroalkyl group.
Most preferably the perfluoroalkyl group is a perfluorobutylethyl group or the like.
The fluoroalkyl portion of the fluoroalkylating agent refers to a partially fluorinated or perfluoroalkyl group.
The perfluoroalkyl group includes trifluoromethyl group and pentafluoroethyl group.
The organic polymer preferably contains at least one of a perfluoroalkyl group and a silicone group.
A perfluoroalkyl group is an alkyl group in which all H have been replaced with fluorine.
By " perluoroalkylated " is meant that the surfactant contains a perfluoroalkyl group.
R F is a perfluoroalkyl group comprising between one and eight carbon atoms.
The method according to claim 8, wherein the perfluoroalkyl group is a trifluoromethyl radical.
The perfluoroalkyl group here has an average chain length of 8 to 9 fluorinated carbon atoms.
Compound according to claim 7, wherein the perfluoroalkyl group is the trifluoromethyl radical.
Also, perfluoroalkyl group may be one containing an oxygen atom in the carbon chains.
A preferable example thereof is a perhalogenoalkyl group, and a particularly preferable example thereof is a perfluoroalkyl group.
Most of all, a perfluoroalkyl group is preferable.
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The halogenated monovalent hydrocarbon group is preferably a fluoroalkyl group, particularly preferably a perfluoroalkyl group.
A carbon number of the perfluoroalkyl group is therefore recommended to be less than 8.
The coloured solution according to claims 8 and 9, wherein each R independently represents a generic perfluoroalkyl group.
The vinyl monomer having the perfluoroalkyl group may be another fluorine-containing monomer.
Additional exemplary reactive fluorochemicals include those having a C4-C18 perfluoroalkyl group.
Preferably, the perfluoroalkyl group is linear, although compositions containing branched-chain perfluoroalkyl groups are suitable.
Preferred are perfluoro alkyl ethyl methacrylates wherein the perfluoroalkyl group contains 4-20 carbon atoms.
The carbon number of a perfluoroalkyl group or a polyfluoroperhaloalkyl group as Rf is preferably at most 5.
The polyfluoropolyethers of claim 13 wherein R ⁷ is a perfluoroalkyl group.
R F is chosen from a fluorine atom and a perfluoroalkyl group containing between 1 and 8 carbon atoms.
A perfluoroalkyl group having from 2 to 6 carbon atoms.
An example of a common perfluoroalkyl group is -CF3.
With a view to increasing solubility in the polymer ( A ), the compound ( B ) preferably contains a perfluoroalkyl group.
That is, the perfluoroalkyl group is a perfluoroalkyl group expressed by,.
It is noted that R13 can also be a perfluoroalkyl group.
Specific examples of the C1-3 perfluoroalkyl group are a trifluoromethyl group and a pentafluoroethyl group.
In the formula ( I ), the Rf group is preferably a perfluoroalkyl group.
Represents F or a perfluoroalkyl group having from 1 to 8 carbon atoms ;.
In one embodiment of formulae ( I or II ), Rf is a perfluoroalkyl group.
Rf is a perfluoroalkyl group having 3 to 8 carbon atoms, or a perfluoroheteroalkyl group having 3 to 50 carbon atoms ;.
In one embodiment of formulae ( I or II ), Rf is a perfluoroalkyl group having a C6 carbon skeleton.
RF is a perfluoroalkyl group having from 4 to 22 carbon atoms ;.
When 2m + 1 is equal to x, the monovalent fluoroalkyl group is a perfluoroalkyl group.
The carbon number of the perfluoroalkyl group is preferably from 2 to 20, particularly preferably from 6 to 16.
The copolymer of Claim 2, wherein Rf in monomer ( a ) is a perfluoroalkyl group.
Rf-Z-R2-OH wherein, Rf is a perfluoroalkyl group or a perfluoroheteroalkyl group as defined above ;.
To R 9 represent, independently of each other, a hydrogen atom, a halogen atom, a perfluoroalkyl group.
The perfluoroalkyl group is preferably a C1-20 perfluoroalkyl group.
In one embodiment of formulae ( I or II ), n is 0, and Rf is a perfluoroalkyl group.
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Examples of using Perfluoroalkyl
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Also suitable are perfluoroalkyl acrylates and methacrylates
Substituted polymers advantageously comprise perfluoroalkyl chains
Is chosen from perfluoroalkyl radicals and perfluoroaryl radicals
