Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1986-04-09
1990-06-26
Hollrah, Glennon H.
Chemistry: fertilizers
Processes and products
Forms or conditioning
71 11, 71 32, 71 54, 71 61, 71 67, 71DIG1, A01N 5906, A01N 5920, A01N 5916, A01N 5900
Patent
active
049368982
ABSTRACT:
A method is disclosed for killing moss growing on a moss-covered surface by sprinkling in dry or wet form a moss-killing powder containing an atomized elemental metal which slowly dissolves with water to form a biocidal solution which kills moss. In the preferred embodiment, a moss-killing powder dry or wet consists essentially of finely powdered atomized elemental zinc and copper mixed with a powdered, dispersible carrier material, such as silia clay, to which the metal particles adhere. The moss-killing powder is sprinkled on a wetted moss-covered surface dry or mixed in a slurry of water and sprinkled wet which causes the powder to initially adhere to the surface. Upon contact with rainwater, or tap water or dew the carrier soaks up water and slowly disintegrate, retaining the metal particles in close proximity so that they electrolytically react with the rainwater or tap water or dew to produce a biocidal solution which kills moss. Gradually the carrier disperses or dissolves and disappears. The elemental metal powder and granular material are combined in particle sizes and proportions such that metal ions are gradually released over a long duration, thereby producing a moss-killing effect which continues for at least one year after a single application.
REFERENCES:
patent: 3479130 (1969-11-01), Rapaport
patent: 3494727 (1970-02-01), Rapaport
patent: 3964893 (1976-06-01), Everingham
patent: 4276732 (1981-07-01), Nielsen
Hollrah Glennon H.
Konstas K.
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