Fluoroacrylate-multifunctional acrylate copolymer compositions
Assignee3M Innovative Properties Company
InventorsZai-Ming Qiu, George G. I. Moore, John C. Clark, Ramesh C. Kumar
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Abstract
A composition comprises a copolymer comprising repeating units derived from at least one co-reactant comprising two or more acrylate groups and repeating units derived from a fluoroacrylate comprising the reaction product of: (a) at least one fluorochemical alcohol represented by the formula: C4F9—X—OH wherein: R=hydrogen or an alkyl group of 1 to 4 carbon atoms, m=2 to 8, Rf═CnF2n+1, n=1 to 5, y=0 to 6, and q=1 to 8; (b) at least one unbranched symmetric diisocyanate; and (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion; wherein the composition is coatable.
Claims23
A composition comprising a copolymer comprising the reaction product of
- (a) a fluoroacrylate represented by the following general formula:
- C4F9—X—OC(O)NH-A-HNC(O)O—(CpH2p)(O)COC(R′)═CH2
- wherein:
- R═H or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf═CnF2n+1,
- n=1 to 5,
- y=0 to 6,
- q=1 to 8,
- A=an unbranched symmetric alkylene group, arylene group, or aralkylene group,
- p=2 to 30, and
- R′═H, CH3, or F;
- and
- (b) at least one co-reactant comprising two or more acrylate groups;
- wherein the composition is coatable.
A method of making a coatable composition comprising reacting a fluoroacrylate with at least one co-reactant comprising two or more acrylate groups, and optionally at least one chain transfer agent, in a reaction solvent to form a copolymer;
- wherein the fluoroacrylate, co-reactant, and chain transfer agent are present in an amount up to about 35 weight percent, the weight percent being based upon the total weight of the monomers and the solvent;
- and wherein the fluoroacrylate is represented by the following general formula:
- C4F9—X—OC(O)NH-A-HNC(O)O—(CpH2p)(O)COC(R′)═CH2
- wherein:
- R═H or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf═CnF2n+1,
- n=1 to 5,
- y=0 to 6,
- q=1 to 8,
- A=an unbranched symmetric alkylene group, arylene group, or aralkylene group,
- p=2 to 30, and
- R′═H, CH3, or F.
A method of making a coatable composition comprising:
- reacting at least one co-reactant comprising two or more acrylate groups with a fluoroacrylate comprising the reaction product of:
- (a) at least one fluorochemical alcohol represented by the formula:
- C4F9—X—OH
- wherein:
- R=hydrogen or an alkyl group of 1 to 4 carbon atoms,
- m=2 to 8,
- Rf═CnF2n+1,
- n=1 to 5,
- y=0 to 6, and
- q=1 to 8;
- (b) at least one unbranched symmetric diisocyanate;
- and
- (c) at least one hydroxy-terminated alkyl (meth)acrylate or 2-fluoroacrylate monomer having 2 to about 30 carbon atoms in its alkylene portion.
Dependencies are inferred from the claim text.