 Dynamic double action valve |
| It is the object of this invention to have a valve in which a small angular rotation of the handle ... |
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| Valve assembly and disassembly device |
| Accordingly, one object of this invention is to provide a novel valve assembly and disassembly ... |
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| Gate valve |
| According to the present invention and forming primary objectives thereof, a gate valve is provided ... |
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| Valve for controlling liquid flow |
| We claim: 1. A valve for controlling the fluid flow from an inlet of a closed valve housing to an ... |
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| Solenoid actuator with bleed screw |
| OF THE SHOWN EMBODIMENT Referring to the drawing more particularly by reference numbers, number 10 ... |
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| Photoelectric single handle faucet |
| This invention relates to an interior mechanism for a faucet suitable for basin, bath tub, and ... |
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| Diaphragm stop for sensor-operated, battery-powered flush valve |
| The present invention relates to diaphragm operated toilet room flush valves and in particular to ... |
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| Automatic controlling valve for maintaining the rate of fluid flow at a constant value |
| The valve according to one embodiment of the present invention is an automatic constant-flow fluid ... |
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| Bi-directional flow control system |
| What is claimed as invention is: 1. A bi-directional pipeline pressure control system comprising: a ... |
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| Electrical plug connector lock |
| We claim: 1. A locking assembly for retaining together a pair of mutually engaging plug connectors ... |
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Phosphor paste compositions and phosphor coatings obtained therefrom
| Details |
Inventors: Osaka, Norihisa; Ikegami, Yukihiro;
Assignee: Mitsubishi Rayon Co., Ltd. (Tokyo, JP)
Primary Examiner: Medley; Margaret
Assistant Examiner: Diamond; Alan D.
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt
A phosphor paste composition is disclosed, which uses as an organic binder an acrylic polymer obtained by copolymerizing an alkyl methacrylate as a principal component with a specific amount of at least one monomer selected from unsaturated carboxylic acids and hydroxyalkyl (meth)acrylates. Also disclosed is a phosphor paste composition making use of a phosphor having a volume average particle size in a range of 1-7 .mu.m, with particles having a particle size of 1-9 .mu.m accounting for at least 60 wt.%. These phosphor paste compositions have excellent firing characteristics and provide phosphor coatings excellent in both light-emitting characteristics and resolution. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An acrylic polymer is preferred as the organic resin binder for the phosphor paste composition according to this invention, although a conventionally-known resin such as an alkyd resin, ethylcellulose or phenol resin can also be used.
As a particularly preferable acrylic polymer, may be mentioned an acrylic polymer (A) obtained by copolymerizing (a) 52-99.
9 wt.
% of an alkyl methacrylate, (b) at least 0.
1 wt.
% of at least one monomer selected from unsaturated carboxylic acids and hydroxyalkyl (meth)acrylates with the proviso that the total proportion of the one or more unsaturated carboxylic acids if contained is not greater than 8 wt.
% and that the total proportion of the one or more hydroxylalkyl (meth)acrylates if contained is not greater than 40 wt.
%, and (c) 0-20 wt.
% of another vinyl monomer copolymerizable with the above monomer.
It is essential that 52-99.
9 wt.
% of the alkyl methacrylate be copolymerized in the acrylic polymer (A).
If the proportion of the alkyl methacrylate is smaller than 52 wt.
%, the acrylic polymer (A) has insufficient burning-away property.
On the other hand, proportions greater than 99.
9 wt.
% lead to an acrylic polymer having insufficient compatibility with the phosphor, thereby failing to provide any phosphor paste consistent with the objects of this invention.
Specific examples of the alkyl methacrylate include C.
sub.
1-8 -alkyl methacrylates such as methyl methacrylate, ethyl methacrylate, n-butyl methacrylate and isobutyl methacrylate.
One or more of these monomers may be chosen as desired in view of their firing conditions such as burning starting temperatures, complete burning-away temperatures, volume reducing rates upon firing, and the desired degree of improvement to the thixotropy of a phosphor paste containing the acrylic polymer.
However, it is particularly preferred to use ethyl methacrylate or isobutyl methacrylate as the principal alkyl methacrylate.
It is necessary for the acrylic polymer (A)used in this invention that at least one compound selected from unsaturated carboxylic acids and hydroxylalkyl (meth)acrylates be copolymerized in a proportion of at least 0
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Metal Working 
