Gas permeable windows composed of amorphous crosslinked fluorinated copolymers and methods of making and using thereof
AssigneeChromis Fiberoptics, Inc.
InventorsChristopher P. Junk, Whitney Ryan White
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Abstract
Described herein are optically transparent and semipermeable windows composed of at least one layer of an amorphous crosslinked fluorinated copolymer. Also disclosed are a process and apparatus for three-dimensional continuous liquid interface production (CLIP) printing using the windows described herein. The amorphous crosslinked fluorinated copolymers have improved mechanical properties, thereby reducing the susceptibility of the window to brittle failures such as cracking and crack propagation. The gas permeable windows have superior durability and reliability compared with other available structures and compositions.
Claims49
A window comprising (a) a semipermeable and optically transparent substrate having a first surface and a second surface and (b) a layer comprising an amorphous crosslinked fluorinated copolymer adjacent to at least one of the first surface or the second surface,
- wherein the amorphous crosslinked fluorinated copolymer comprises a plurality of first copolymers and a plurality of crosslinker units covalently bonded to the first polymers,
- wherein the first copolymer comprises a plurality of fluorinated ring units,
- wherein the fluorinated ring unit is at least a five membered ring, and
- wherein the first copolymer has a Mw of from 100,000 g/mol to 3,000,000 g/mol.
A window comprising (a) a semipermeable and optically transparent substrate having a first surface and a second surface and (b) a layer comprising an amorphous crosslinked fluorinated copolymer adjacent to at least one of the first surface or the second surface,
- wherein the amorphous crosslinked fluorinated copolymer is produced by (a) copolymerizing one or more fluorinated ring monomers in the amount of 1 mol % to 99.5 mol %, wherein the fluorinated ring monomer is at least a five membered ring, and a crosslinker in the amount of from 0.2 mol % to 40 mol % to produce a first copolymer and (b) crosslinking the first copolymer to produce the amorphous crosslinked fluorinated copolymer,
- wherein the crosslinker comprises a perfluorinated olefinic compound comprising at least one crosslinkable group, and the crosslinkable group comprises an alkyl ester group or a cyano group.
Dependencies are inferred from the claim text.