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US 8,557,351 B2Granted
Method for adhering materials together
AssigneeMolecular Imprints, Inc.
InventorFrank Y. Xu
Life of this patent
Estimating the term…
Abstract
The present invention provides a method adhering a layer to a substrate that features defining first and second interfaces by having a composition present between the layer and the substrate that forms covalent bonds to the layer and adheres to the substrate employing one or more of covalent bonds, ionic bonds and Van der Waals forces. In this manner, the strength of the adhering force of the layer to the composition is assured to be stronger than the adhering force of the layer to the composition formed from a predetermined adhering mechanism, i.e., an adhering mechanism that does not include covalent bonding.
Claims15
A method of adhering a layer to an imprint lithography substrate, said method comprising:
- (i) depositing a composition comprising a cross-linker and a multi-functional reactive compound upon said imprint lithography substrate, wherein the multi-functional reactive compound comprises:
- (a) an organic backbone group;
- and
- (b) a first functional group and a second functional group coupled to opposing ends of the organic backbone group, wherein the functional groups are different, and wherein the first functional group is acrylate and the second functional group is selected from the group consisting of a carboxylic group and an epoxy group;
- (ii) thermally curing said composition, wherein thermally curing comprises:
- (a) forming interactions between the imprint lithography substrate and the multi-functional reactive compound through the second functional group;
- (b) forming interactions between the substrate and the second functional group of the multi-functional reactive compound through the cross-linker;
- and
- (c) forming covalent or ionic bonds between the cross-linker and the multi-functional reactive compound through the second functional group;
- (iii) depositing a polymerizable material on said thermally cured composition to form said layer;
- and
- (iv) exposing the polymerizable material to actinic energy to polymerize the polymerizable material, wherein polymerizing the polymerizable material comprises forming covalent bonds between the polymerizable material and the multi-functional reactive compound in the thermally cured composition through the first functional group.
9 more elements
A method of adhering a layer to an imprint lithography substrate, said method comprising:
- (i) depositing a composition comprising a cross-linker and a multi-functional reactive compound upon said imprint lithography substrate, wherein the multi-functional reactive compound comprises:
- (a) an organic backbone group;
- and
- (b) a first functional group and a second functional group coupled to opposing ends of the organic backbone group, wherein the first functional group is an acrylate group and the second functional group is selected from the group consisting of a carboxylic group and an epoxy group;
- (ii) solidifying said composition to form a solidified composition adhered to the imprint lithography substrate, wherein solidifying comprises:
- (a) forming an interaction between the second functional group and the imprint lithography substrate, and wherein the interaction is selected from the group consisting of covalent bonds, ionic bonds, and van der Waals forces;
- and
- (b) forming interactions between the substrate and the second functional group of the multi-functional reactive compound through the cross-linker;
- and
- (c) forming covalent or ionic bonds between the cross-linker and the multi-functional reactive compound through the second functional group;
- (iii) depositing discrete drops of a polymerizable material upon said solidified composition;
- (iv) contacting the polymerizable material with an imprint lithography mold;
- (v) polymerizing the polymerizable material, wherein polymerizing comprises forming covalent bonds between the polymerizable material and the first functional groups in the solidified composition during polymerization of the polymerizable material;
- and
- (vi) separating the imprint lithography mold from the polymerized material.
12 more elements
A method of adhering a layer to an imprint lithography substrate, said method comprising:
- (i) depositing a composition comprising an organic multi-functional reactive compound upon said imprint lithography substrate, wherein the multi-functional reactive compound comprises:
- (a) an organic backbone group;
- and
- (b) a first functional group and a second functional group coupled to opposing ends of the organic backbone group, wherein the functional groups are different, and wherein the first functional group is an acrylate group and the second functional group is selected from the group consisting of a carboxylic group and an epoxy group;
- (ii) thermally curing said composition, wherein thermally curing comprises forming interactions between the imprint lithography substrate and the multi-functional reactive compound through the second functional group;
- (iii) depositing a polymerizable material on said thermally cured composition to form said layer;
- and
- (iv) exposing the polymerizable material to actinic energy to polymerize the polymerizable material, wherein polymerizing the polymerizable material comprises forming covalent bonds between the polymerizable material and the multi-functional reactive compound in the thermally cured composition through the first functional group.
5 more elements
A method of adhering a layer to an imprint lithography substrate, said method comprising:
- (i) depositing a composition comprising an organic multi-functional reactive compound upon said imprint lithography substrate, wherein the multi-functional reactive compound comprises:
- (a) an organic backbone group;
- and
- (b) a first functional group and a second functional group coupled to opposing ends of the organic backbone group, and wherein the first functional group is an acrylate group and the second functional group is selected from the group consisting of a carboxylic group and an epoxy group;
- (ii) solidifying said composition to form a solidified composition adhered to the imprint lithography substrate, wherein solidifying comprises forming an interaction between the second functional group and the imprint lithography substrate, and wherein the interaction is selected from the group consisting of covalent bonds, ionic bonds, and van der Waals forces;
- (iii) depositing discrete drops of a polymerizable material upon said solidified composition;
- (iv) contacting the polymerizable material with an imprint lithography mold;
- (v) polymerizing the polymerizable material, wherein polymerizing comprises forming covalent bonds between the polymerizable material and the first functional groups in the solidified composition during polymerization of the polymerizable material;
- and
- (vi) separating the imprint lithography mold from the polymerized material.
7 more elements
Dependencies are inferred from the claim text.