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US 7,887,716 B2Granted
Barrier sealant of phenylene oxetane and cationic initiator
AssigneeHenkel AG & Co. KGaA
InventorsShengqian Kong, Stijn Gillissen
Life of this patent
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Abstract
This invention relates to cationically curable sealants that provide low moisture permeability and good adhesive strength after cure. The composition consists essentially of an electrophoretic device containing an oxetane compound and a photoinitiating system comprising and photoinitiator and optionally a photosensitizer.
Claims9
An electrophoretic device sealed with a barrier sealant in which the barrier sealant comprises a cationic initiator and an oxetane compound selected from the group consisting of;
An electrophoretic device sealed with a barrier sealant in which the barrier sealant consists essentially of
- (a) an oxetane compound;
- (b) a cationic initiator,
- (c) one or more fillers, and
- (d) one or more adhesion promoters, or one or more epoxy resins;
- wherein said oxetane compound has the structure:
- in which
- R7, R8, R9, R10, and R11 are independently selected from the group consisting of hydrogen, alkyl, haloalkyl, alkoxy, aryloxy, aryl, alkyloyl and aryloyl groups;
- n is 0, 1, 2, 3, or 4;
- Z is a cationically reactive functionality selected from the group consisting of
- hydroxyl
- —OH
- vinyl ether
- —O—CH═CH—R12
- aliphatic epoxy
- glycidyl ether
- cycloaliphatic epoxy
- in which
- R12 is independently selected from the group consisting of hydrogen, alkyl, haloalkyl, alkoxy, aryloxy, aryl, alkyloyl and aryloyl groups;
- and
- R13 is a linking group selected from the group consisting of alkyl, haloalkyl, aryl, ether, thio-ether, ester, thio-ester, silane, carbonate, and ketone.
17 more elements
Dependencies are inferred from the claim text.