Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1992-09-15
1995-01-17
Thibodeau, Paul J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
428404, 428689, 428699, 428701, 428702, B32B 516
Patent
active
053824750
ABSTRACT:
Long-term algicidal granules show improved color fastness over previously known granules. The granules have a ceramic coating comprising three layers, the first two of which have a copper compound such as cuprous oxide therein at relatively equal amounts. The ceramic coating further includes a third layer having pigment, a borate compound, and zinc oxide having an average particle size less than about 0.13 micrometer. In particular it has been found that the use of cuprous oxide allows conversion to black cupric oxide, which is more insoluble than cuprous oxide and black in color, allowing the algae-resistant granules to retain their original color for loger periods of time under weathering conditions. Methods of producing such ceramic-coated granular materials are also disclosed.
REFERENCES:
patent: 1720708 (1922-04-01), Young
patent: 2001448 (1935-05-01), Beasley
patent: 2054317 (1936-09-01), Gundlach
patent: 2070359 (1937-02-01), Hillers
patent: 2111131 (1938-03-01), Weygrandt
patent: 2120773 (1938-06-01), Wright
patent: 2225867 (1940-12-01), Hurd
patent: 2981636 (1957-02-01), Lodge et al.
patent: 3046188 (1962-07-01), Gaudian et al.
patent: 3255031 (1966-06-01), Lodge et al.
patent: 3420690 (1969-01-01), Beyard et al.
patent: 3479201 (1969-11-01), Sloan
patent: 3484267 (1969-12-01), Salder, III
patent: 3507676 (1970-04-01), McMahon
patent: 3528842 (1970-09-01), Skadulis
patent: 3598627 (1971-08-01), Klimboff
patent: 3752696 (1973-08-01), Beyard et al.
patent: 3826825 (1974-07-01), Dowd et al.
patent: 3888176 (1975-06-01), Horai et al.
patent: 3888682 (1975-06-01), Nelson
patent: 3888683 (1975-06-01), Horai et al.
patent: 3888684 (1975-06-01), Little
patent: 3894877 (1975-07-01), Nelson
patent: 3985540 (1976-10-01), Fein et al.
patent: 4092441 (1978-05-01), Meyer et al.
patent: 4359505 (1982-11-01), Joodicke
patent: 4378408 (1983-03-01), Joodicke
Kirk-Othmer, Encyclopedia of Chemica Technology, vol. 24, 3rd Ed., John Wiley & Sons (New York) pp. 854-863.
Griswold Gary L.
Kirn Walter N.
Le H. Thi
Minnesota Mining and Manufacturing Company
Thibodeau Paul J.
LandOfFree
Pigmented algae-resistant granular materials and composites shee does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pigmented algae-resistant granular materials and composites shee, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pigmented algae-resistant granular materials and composites shee will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-746383