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US 2025/0154293 A1Published application
Photocurable (meth)acrylate compositions
AssigneeHenkel AG & Co. KGaA
InventorsShuhua Jin, Chih-Min (Stone) Cheng
Life of this patent
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Abstract
Photocurable (meth)acrylate compositions for forming features on the surfaces of membranes, and particularly, on membranes used in osmosis and reverse-osmosis applications, such as membrane filters.
Claims23
A photocurable composition comprising:
- a) a (meth)acrylate-functionalized urethane component wherein the (meth)acrylate-functionalized urethane component is a polyether urethane acrylate oligomer or a polyester urethane acrylate;
- b) a (meth)acrylate monomer;
- and
- c) a photoinitiator,
- wherein the (meth)acrylate-functionalized urethane component comprises isocyanate functionality and/or the photocurable composition further comprises:
- d) an isocyanate-functionalized adhesion promoter, and
- wherein when deposited on a polyamide surface of a substrate and exposed to UV or visible light the curable composition forms a cured reaction product on the polyamide surface of the substrate and the cured reaction product demonstrates an adhesion to the polyamide surface of the substrate characterized by:
- 1) substrate failure after immersion in acidic, aqueous (pH=1.5) conditions for about 1 week at a temperature of about 50° C.;
- and/or
- 2) substrate failure after immersion in basic, aqueous (pH=12.5) conditions for about 1 week at a temperature of about 50° C.;
- and/or
- 3) substrate failure after immersion in neutral, aqueous (pH=7.0) conditions for about 1 week at a temperature of about 50° C.,
- wherein the substrate is a reverse osmosis membrane.
10 more elements
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A method of a producing a cured reaction product comprising the steps of:
- a) providing a curable composition comprising:
- i) a (meth)acrylate-functionalized urethane component wherein the (meth)acrylate-functionalized urethane component is a polyether urethane acrylate oligomer or a polyester urethane acrylate;
- ii) a (meth)acrylate monomer;
- and
- iii) a photoinitiator;
- wherein the (meth)acrylate-functionalized urethane component comprises isocyanate functionality and/or the photocurable composition further comprises:
- iv) an isocyanate-functionalized adhesion promoter, and
- b) exposing the curable composition to a source of UV or visible light to form a cured reaction product,
- wherein when deposited on a polyamide surface of a substrate and exposed to UV or visible light the curable composition forms a cured reaction product on the polyamide surface of the substrate and the cured reaction product demonstrates an adhesion to the polyamide surface of the substrate characterized by:
- 1) substrate failure after immersion in acidic, aqueous (pH=1.5) conditions for about 1 week at a temperature of about 50° C.;
- and/or
- 2) substrate failure after immersion in basic, aqueous (pH=12.5) conditions for about 1 week at a temperature of about 50° C.;
- and/or
- 3) substrate failure after immersion in neutral, aqueous (pH=7.0) conditions for about 1 week at a temperature of about 50° C.,
- wherein the substrate is a reverse osmosis membrane.
12 more elements
Dependencies are inferred from the claim text.