Kigale A4 Designated state s: Ref legal jls code: The ratio of the modifier resin to be used is usually about 10 to about 50 parts by weight, relative to parts by weight of chlorinated polyolefin. The melamine resins may be hydrophobic or hydrophilic; especially suitable are low-condensation hydrophilic melamine resins that are etherified with methanol and have a number average molecular weight of about 3, or less, preferably about to 1, An aluminum nitride sintered body, comprising metal elements of contents of not more than ppm for each metal element except for aluminum and assuming black color of a lightness of not more than N 4 according to the definition of JIS Z GB Free format text: Double-sided pressure sensitive adhesive tapes for the his and bonding of LC displays with light-absorbing properties. Table 3 shows the test results of the coating films of the aqueous white primers formed in Examples 1 to 6. Lapsed in a contracting state announced via postgrant inform.
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Kazikus Method for producing joined body of a1n substrates and joining agent used for the joining. The polyester resin may also contain carboxyl groups in addition to the hydroxyl groups, and generally has a weight-average molecular weight of about 1, to about , preferably about 1, to about 70, Lightness V is based on non-colors wherein the lightness of ideal black is taken as 0 and the lightness of ideal white is taken as 10 and the lightness between the ideal black and the ideal white is divided into 10 lightnesses of an equal spacing of the sense of sight for a lightness of a color so as to express the lightness of the color by a symbol between N 0 — N Especially preferable is a water-dispersed self-emulsifying polyurethane resin with an average particle diameter of about 0.
The sintered body obtained at this condition shows a further progressing of the sintering and some further development of the crystal grains and a further low lightness as compared with Example 2. In order to improve coating film performance such as water resistance etc. As seen from these results, in case of the heat treatment at ambient pressure, excessive sintering was not occurred if the heat treatment was effected in a relatively short period of time, jia, development of the crystal grains occurred, and hence the color tone of the sintered body turned gray.
Particularly, in semiconductor production processes, it has no afraid of affecting a serious adverse influence on semiconductor wafers and the production apparatuses theirselves.
The white pigment is used usually in an amount of about 50 to about parts by weight, and preferably about 70 to about parts by weight, per parts by weight of solids of the resin component containing chlorinated polyolefin and optional modifier resin.
Bulk density was measured by Archimedes method. With the coating film of the primer being highly white, a light-colored multilayer coating film can be successfully formed having a lightness value N value of about 8. After coating, the coating film may also be optionally set.
A1 Designated state s: Another object of the invention is to provide a method for forming a coating film on a plastic substrate, wherein a light-colored multilayer coating film with a high degree of lightness can be In order to impart water dispersibility to the chlorinated polyolefin, it is possible to carry out the graft polymerization of the chlorinated polyolefin by a known method with at least one kind of hydrophilic monomer such as polymerizable unsaturated dicarboxylic acids or anhydrides thereof.
However, lightness of the sintered body was 5. Particularly, there is no afraid that an adverse influence is incurred on the semiconductor wafers and the production apparatus itself. The thus obtained aluminum nitride sintered bodies of Examples 2 — 5 were measured in the same manner as described above. The particle form of the electrically conductive fillers is usually powdery, acicular, fibrous or spherical.
The coating film obtained in step 1 was left to stand at room temperature for 10 seconds for setting. The obtained polymer preferably has an epoxy equivalent of about 20 to about 2, particularly about 30 to about and a number average molecular weight of about 3, to about , particularly about 4, to about 50, Aluminum nitride sintered bodies were produced in the same manner as in Comparative Examples 1 — 3.
These amine compounds can be used singly ji in combination of two or more. The aluminum nitride sintered body has preferably a relative density of at least The method of producing an aluminum nitride sintered body of claim 6, wherein the sintering of the powder of aluminum nitride is effected for at least 2 hrs but not more than 5 hrs. Y 2 O 3 Addition Amount. In order to impart jid solubility or water dispersibility to the chlorinated polyolefin subjected to graft polymerization with the polymerizable unsaturated dicarboxylic acid or anhydride thereof, it nis preferable to neutralize some or all of the carboxyl jos contained in the molecules of the chlorinated polyolefin with an amine compound.
The aluminum nitride sintered body of the present invention has a large radiation heat amount and a superior heating property, so that it is suited most to substrates of heating members of ceramic heaters, susceptors and the like. The method for forming a coating film according to the above item 1, wherein the aqueous white primer A comprises a chlorinated polyolefin, white pigment and water.
Other methods can also be used in combination. The amounts of the components in Jix 1 are expressed on a solids basis parts by weight. DE Ref legal event code: The aqueous white primer A is used to adjust the water content of the coating film within a specific range and thereby to provide the electrical conductivity required for electrostatically coating the primer film with a coating composition. JIS Z Electroconductive coating composition and method for electrostatic coating of plastic substrate.
Examples of such monomers are carboxyl-containing monomers such as meth acrylic acid, maleic acid and the like; epoxy-containing monomers such ijs glycidyl meth acrylate and the jiz meth acrylamide; acrylonitrile; styrene; jia acetate; vinyl chloride; and so on.
Acrylic resins that can be preferably used as the modifier resin are hydroxyl-containing acrylic resins. Examples of the usable organic solvent are ketone solvents such as methyl ethyl ketone, methyl isobutyl ketone and the like; ester solvents such as ethyl acetate, butyl acetate and the like; ether solvents such as ethylene glycol monobutyl ether and the like; alcohol solvents such as isopropyl alcohol, n-butyl alcohol, isobutyl alcohol and the like; aliphatic hydrocarbon solvents such as n-heptane, n-hexane, isooctane and the like; aromatic hydrocarbon solvents such as toluene, xylene and the like; and other solvents such as N-methyl-pyrrolidone, etc.
The method for forming a coating film of present invention provides the following remarkable effects:. Lapsed in a contracting state announced via postgrant inform. The copolymerization of these monomers can be performed by known methods.
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