Claims
- 1. A phosphor-coating composition which is to be coated on an inner surface of a fluorescent lamp, said composition comprising:
- halophosphate phosphor particles;
- a water-soluble organic binder comprising polyethylene oxide in an amount sufficient to provide the composition with a viscosity of about 20 to 60 centipoises;
- a water-soluble adhesive material for increasing the adhesive strength between said phosphor particles and the inner surface of the lamp, said adhesive material comprising at least one water-soluble lanthanum compound or a derivative thereof in an amount of from 0.001 to 5% by weight in terms of a corresponding lanthanum oxide, based on the total weight of said halophosphate phosphors; and
- an aqueous medium dissolving said organic binder and said lanthanum compound or derivative thereof, and dispersing said halophosphate particles therein.
- 2. The composition according to claim 1, wherein said lanthanum compound is selected from lanthanum nitrate, lanthanum chloride, and lanthanum acetate.
Priority Claims (5)
Number |
Date |
Country |
Kind |
2-266077 |
Oct 1990 |
JPX |
|
3-025323 |
Jan 1991 |
JPX |
|
3-025324 |
Jan 1991 |
JPX |
|
3-025325 |
Jan 1991 |
JPX |
|
3-025326 |
Jan 1991 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/767,805, filed Sep. 30, 1991, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
56-047479 |
Apr 1981 |
JPX |
2082618 |
Mar 1982 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
767805 |
Sep 1991 |
|