Curable aqueous silicate composition, uses thereof, and coatings

Details Curable aqueous silicate composition, uses thereof, and coatings Curable aqueous silicate composition, uses thereof, and coatings

1981-02-26

1982-08-31

Lusignan, Michael R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

106 74, 106 84, 4273884, 427393, 4273933, 4273936, 4273978, 428446, 428450, 524 8, 524417, B32B 904, B32B 906, B05D 302

Patent

active

043472850

ABSTRACT:
The disclosed aqueous binder system has a pot life of more than 15 minutes at room temperature and is normally stored as a two-part system. The first part comprises an alkali metal silicate, and the second part comprises a coreactant metal salt of marginal water solubility (at room temperature and neutral pH) which provides reactive divalent metal ions. A rubber latex is normally included in one or both parts, preferably the coreactant (second) part. Preferred coreactants are metal salts of Group II, A or B of the Periodic Table, particularly phosphates, carbonates, or borates of magnesium and zinc. A preferred method of application involves blending the two-part system, spraying it onto a surface, and permitting the sprayed material to cure to a water-resistant layer having a Barcol hardness of at least 10. A low density inorganic filler can be incorporated into the coating to reduce its density below 0.4 g/cc and to provide better insulative properties.

REFERENCES:
patent: 4267089 (1981-05-01), Brown

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