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US 2022/0033654 A1Published application
Thermally stable and electrically isolating barrier film
AssigneeCorning Incorporated
InventorsArthur Winston Martin, Shawn Michael O'Malley
Life of this patent
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Abstract
A thermoset barrier film including: a reaction product of the formulas (I), (II), (III), (IV), or a mixture thereof, as defined herein. Also disclosed are methods of making and using the thermoset barrier film, and devices incorporating the thermoset barrier film.
Claims20
A thermoset barrier film, comprising:
- a reaction product comprising:
- a fluorinated polyimide oligomer having anhydride end caps, in from 50 to 90 wt %;
- a cross-linker, in from 1 to 40 wt %, comprising a polyhedral oligomeric silsesquioxane having at least one pendant group selected from an epoxy group, a di-aryl group, an acrylate group, or mixtures thereof;
- a tie agent having at least one of each of an acrylate group and an epoxy group, in from 0.1 to 20 wt %;
- an epoxy silane adhesion promoter, in from 0.1 to 3 wt %;
- and
- an initiator, in from 1 to 20 wt %, based on a total of 100 wt % of the barrier film, wherein the barrier film is electrically isolating and has a voltage breakdown of from 300 to 1900 volts per micron,
- wherein the barrier film is thermally stable up to at least 250° C. with no loss in mass below 250° C., and
- further wherein the barrier film has a water contact angle of from 89 degrees to 112 degrees.
6 more elements
A pourable formulation for a thermoset barrier film, comprising:
- a solvent or a liquid vehicle;
- and
- a reaction product dissolved in the solvent or suspended in the liquid vehicle,
- wherein the reaction product comprises:
- a fluorinated polyimide oligomer having anhydride end caps, in from 50 to 90 wt %;
- a cross-linker, in from 1 to 40 wt %, comprising a polyhedral oligomeric silsesquioxane having at least one pendant group selected from an epoxy group, a di-aryl group, an acrylate group, or mixtures thereof;
- a tie agent having at least one of each of an acrylate group and an epoxy group, in from 0.1 to 20 wt %;
- an epoxy silane adhesion promoter, in from 0.1 to 3 wt %;
- and
- an initiator, in from 1 to 20 wt %, based on a total of 100 wt % of the barrier film.
7 more elements
A method of making a thermoset barrier film, comprising:
- combining a reaction product, the reaction product comprising:
- a fluorinated polyimide oligomer having anhydride end caps, in from 50 to 90 wt %;
- a cross-linker, in from 1 to 40 wt %, comprising a polyhedral oligomeric silsesquioxane having at least one pendant group selected from an epoxy group, a di-aryl group, an acrylate group, or mixtures thereof;
- a tie agent having at least one of each of an acrylate group and an epoxy group, in from 0.1 to 20 wt %;
- an epoxy silane adhesion promoter, in from 0.1 to 3 wt %;
- and
- an initiator, in from 1 to 20 wt %, based on a total of 100 wt % of the thermoset barrier film;
- initiating a reaction of the reaction product after the combining step for a time using radiation, heat or a combination thereof;
- and
- coating the reaction product on a substrate after the initiating step to form a thermoset barrier film on the substrate.
7 more elements
Dependencies are inferred from the claim text.