US 2019/0330434 A1 · METHODS FOR GRAFTING LIQUID CRYSTALLINE COATINGS ONTO POLYMER SURFACES

Abstract

Methods of grafting a liquid crystalline coating onto a substrate, and articles comprising a substrate with a liquid crystalline coating are disclosed. The liquid crystalline coatings can be formed by (a) applying a primer layer comprising a Type II photoinitiator to a surface of the substrate, then (b) applying a coating mixture that comprises one or more liquid crystalline monomers to the surface of the substrate, and then (c) irradiating the coating mixture to form the liquid crystalline coating. The coating mixture can further comprise a second amount of a Type II photoinitiator. The methods can be performed in open air, at room temperature, or at ambient pressure, and the resulting liquid crystalline coatings can exhibit improved adhesive properties to the substrate.

Claims25

Dependent claims

A method of grafting a liquid crystalline coating onto a substrate, the method comprising:

applying a first primer layer comprising a solution comprising 0.001 wt % to 20 wt % of a Type II photoinitiator based on the total weight of the solution and a solvent onto a first surface area of the substrate;
wherein the Type II photoinitiator comprises at least one of a benzophenone, a thioxanthone, a xanthone, or a quinone and wherein the solvent comprises at least one of an alcohol or an alkane;
evaporating the solvent from the first primer layer;
after the evaporating, applying a first coating layer comprising at least one liquid crystalline monomer onto the first surface area of the substrate;
and
irradiating the first coating layer to form a first liquid crystalline layer;
wherein the liquid crystalline coating includes the first liquid crystalline layer.

4 more elements

Dependencies are inferred from the claim text.

Methods for grafting liquid crystalline coatings onto polymer surfaces

Life of this patent

Methods for grafting liquid crystalline coatings onto polymer surfaces

Life of this patent

Abstract

Claims25