Alkali metal silicate-zinc hydroxychloride coating composition

Compositions: coating or plastic – Coating or plastic compositions – Contains fireproofing or biocidal agent

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106 74, 106 84, 106105, 106287S, C09D 514

Patent

active

039986446

ABSTRACT:
An aqueous, alkaline, inorganic composition, comprising water-soluble alkali metal silicate and zinc hydroxychloride, is used to coat substrates normally infested by algae, such as silicate-containing building material, e.g., concrete roofing tiles, to prevent or minimize algal infestation on said substrates, said algae otherwise imparting a dark, unsightly appearance thereto.

REFERENCES:
patent: 1321429 (1919-11-01), Galley
patent: 1923769 (1933-08-01), Wood
patent: 2091991 (1937-09-01), Jewett
patent: 2310128 (1943-02-01), Smith
patent: 2769716 (1956-11-01), Rankin
patent: 2952553 (1960-09-01), Ilenda et al.
patent: 3507676 (1970-04-01), McMahon

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