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US 12,291,646 B2Granted
Photocurable (meth)acrylate compositions
AssigneeHenkel AG & Co. KGaA
InventorsShuhua Jin, Chih-Min Cheng
Life of this patent
Estimating the term…
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.
Claims26
A photocurable composition comprising:
- a) a (meth)acrylate-functionalized polyether urethane component, wherein the (meth)acrylate-functionalized polyether urethane component is present in an amount of about 20% to about 60% by weight based on the total weight of the curable composition;
- b) a (meth)acrylate monomer;
- c) an organic filler;
- and
- d) a photoinitiator,
- wherein when exposed to UV or visible light the curable composition forms a cured reaction product, the cured reaction product demonstrates a loss of mass of:
- 1) less than 2% when exposed to acidic, aqueous conditions of a pH=1.5 for about 4 weeks at a temperature of about 50° C. and/or 2) less than 3% when exposed to basic, aqueous conditions of a pH=12.5 for about 4 weeks at a temperature of about 50° C.
4 more elements
A method of a producing a hydrolytically stable cured reaction product comprising the steps of:
- a) providing a curable composition comprising:
- i) a (meth)acrylate-functionalized polyether urethane component, wherein the (meth)acrylate-functionalized polyether urethane component is present in an amount of about 20% to about 60% by weight based on the total weight of the curable composition;
- ii) a (meth)acrylate monomer;
- iii) an organic filler;
- and
- iv) a photoinitiator, and
- b) exposing the curable composition to a source of UV or visible light to form a cured reaction product,
- wherein hydrolytic stability is demonstrated when the cured reaction product demonstrates a loss of mass of:
- 1) less than 2% when exposed to acid, aqueous conditions of a pH=1.5 for about 4 weeks at a temperature of about 50° C. or 2) less than 3% when exposed to basic, aqueous conditions of a pH=12.5 for about 4 weeks at a temperature of about 50° C.
6 more elements
Dependencies are inferred from the claim text.