Fluoroacrylate-mercaptofunctional copolymers
Assignee3M Innovative Properties Company
InventorsZai-Ming Qiu, John Clark, Ramesh Kumar
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Abstract
A copolymer comprises repeating units derived from at least one co-reactant comprising two or more mercapto functional 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.
Claims21
A copolymer comprising repeating units derived from at least one co-reactant comprising two or more mercapto functional 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.
Dependencies are inferred from the claim text.