High dielectric graft copolymer
First Claim
1. A high dielectric graft polymer which is prepared by graft-polymerizing a fluorine-containing polymer selected from the group consisting of vinylidene fluoride, hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, pentafluoropropylene, and perfluoromethyl vinyl ether with a cyanoethylated (meth) acrylic monomer of the formula (II):
- ##STR3## wherein x is an integer of 2 to 4, y is a number satisfying the equation;
1≦
y≦
x-1, R4 is H or CH3, and R5 is a member selected from the group consisting of --CH2 CH2 --, --CH(CH3)CH2-, --CH2 CH(CH3)CH2-, --CH2 CH2 CH(CH3)-, --CH2 CH2 CH2 CH2 CH2 CH2-, --CH2 C(CH3)2 CH2-, --CH2 CH2 OCH2 CH2-, --CH2 CH(CH3)OCH2 CH (CH3)--, --CH2 CH2 OCH2 CH2 OCH2 CH2-, ##STR4##
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Abstract
This invention provides an organic dispersion-type electroluminescence (abbreviated as "EL") element comprising a backing electrode, a reflective insulating layer, a luminescent layer, and a transparent electrode, wherein said reflective insulating layer comprises a high dielectric binder resin, an inorganic high dielectric material (i.e. powdery barium titanate), an impurity ion killer, and/or a hydrophobic hydrocarbon group-containing alkoxysilane compound, which is effective for inhibiting or preventing undesirable deterioration of dielectric properties and shortening of durability induced by the impurity ions present in the powdery barium titanate, and further a high dielectric graft polymer composition which is useful as a high dielectric binder resin used in the preparation of the reflective insulating layer and luminescent layer in said EL element. Said dispersion-type EL element has usually used as a back-lighting, for example, in liquid crystal display (LCD) element in word processing machines or note-type personal computer.
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Citations
6 Claims
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1. A high dielectric graft polymer which is prepared by graft-polymerizing a fluorine-containing polymer selected from the group consisting of vinylidene fluoride, hexafluoropropylene, chlorotrifluoroethylene, tetrafluoroethylene, pentafluoropropylene, and perfluoromethyl vinyl ether with a cyanoethylated (meth) acrylic monomer of the formula (II):
- ##STR3## wherein x is an integer of 2 to 4, y is a number satisfying the equation;
1≦
y≦
x-1, R4 is H or CH3, and R5 is a member selected from the group consisting of --CH2 CH2 --, --CH(CH3)CH2-, --CH2 CH(CH3)CH2-, --CH2 CH2 CH(CH3)-, --CH2 CH2 CH2 CH2 CH2 CH2-, --CH2 C(CH3)2 CH2-, --CH2 CH2 OCH2 CH2-, --CH2 CH(CH3)OCH2 CH (CH3)--, --CH2 CH2 OCH2 CH2 OCH2 CH2-, ##STR4## - View Dependent Claims (2, 3, 4, 5, 6)
- ##STR3## wherein x is an integer of 2 to 4, y is a number satisfying the equation;
Specification
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- Resources
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Current AssigneeSunstar Giken Kabushiki Kaisha (Hosei Gijuku Luxembourg SA)
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Original AssigneeSunstar Giken Kabushiki Kaisha (Hosei Gijuku Luxembourg SA)
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InventorsNishikawa, Satoshi, Aoyama, Mihoko
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Primary Examiner(s)HENDERSON JR, CHRISTOPHER A
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Application NumberUS08/558,776Time in Patent Office965 DaysField of Search525/295, 525/293US Class Current525/295CPC Class CodesC08F 259/08 on to polymers containing f...C08F 265/04 on to polymers of esters
