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US 11,267,922 B2Granted
Fluorinated block copolymers derived from nitrile cure-site monomers
Assignee3M Innovative Properties Company
InventorsMichael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Abstract
There is provided a curable composition comprising a fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least a fluorinated monomer; and (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units that comprises at least a fluorinated monomer and a nitrile-containing cure-site monomer.
Claims18
A curable composition comprising:
- a fluorinated block copolymer having
- (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride;
- and
- b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units derived from hexafluoropropylene, vinylidene fluoride, and a nitrile-containing cure-site monomer,
- wherein the fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C. as measured at a strain of 1% and a frequency of 1 Hertz.
2 more elements
Dependencies are inferred from the claim text.