Water- and oil-repellent fluorourethanes and fluoroureas
OwnerGeorge Moore, Ramesh Kumar +3inventors
InventorsGeorge Moore, Ramesh Kumar, Zai-Ming Qiu, John Clark, Chetan Jariwala
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Abstract
A fluorochemical compound comprises the reaction product of: (a) the reaction product of: (i) at least one fluorochemical alcohol represented by the formula: CnF2n+1—X—OH wherein: n=1 to 6, R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf=CnF2n+1, y=0 to 6, q=1 to 8; and (ii) at least one unbranched symmetric diisocyanate, and (b) at least one co-reactant comprising two or more functional groups that are capable of reacting with an isocyanate group.
Claims30
A fluorochemical compound comprising the reaction product of:
- (a) the reaction product of:
- (i) at least one fluorochemical alcohol represented by the formula:
- CnF2n+1—X—OH
- wherein:
- n=1 to 6,
- R=hydrogen or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf=CnF2n+1,
- y=0 to 6,
- q=1 to 8;
- and
- (ii) at least one unbranched symmetric diisocyanate, and
- (b) at least one co-reactant comprising two or more functional groups that are capable of reacting with an isocyanate group.
A fluorochemical compound comprising the reaction product of:
- (a) at least one fluorinated isocyanate represented by the following general formula:
- CnF2n+1—X—OC(O)NH-A-NCO
- wherein:
- n=1 to 6,
- R=H or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf=CnF2n+1,
- y=0 to 6,
- q=1 to 8, and
- A=an unbranched symmetric alkylene group, arylene group, or aralkylene group;
- and
- (b) at least one co-reactant comprising two or more functional groups that are capable of reacting with an isocyanate group.
A method for making a fluorochemical compound comprising:
- (a) reacting at least one fluorochemical alcohol with at least one unbranched symmetric diisocyanate to form a fluorinated isocyanate, the fluorochemical alcohol being represented by the formula:
- CnF2n+1—X—OH
- wherein:
- n=1 to 6,
- R=hydrogen or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf=CnF2n+1,
- y=0 to 6,
- q=1 to 8;
- and
- (b) reacting the fluorinated isocyanate with at least one compound comprising two or more functional groups that are capable of reacting with an isocyanate group.
A method for making a fluorochemical compound comprising:
- reacting (a) at least one compound comprising two or more functional groups that are capable of reacting with an isocyanate group, and (b) at least one fluorinated isocyanate represented by the formula:
- CnF2n+1—X—OC(O)NH-A-NCO
- wherein:
- n=1 to 6,
- R=H or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf=CnF2n+1,
- y=0 to 6,
- q=1 to 8, and
- A=an unbranched symmetric alkylene group, arylene group, or aralkylene group.
Dependencies are inferred from the claim text.