Process for bonding tiles to substrate using magnesium phosphate comprising activator prepared by mixing inert porous material with liquid P.sub.2 O.sub.5 material
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United States of America Patent
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-
Mar 12, 1991
Issued Date -
N/A
app pub date -
Oct 3, 1986
filing date -
Aug 11, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fast-setting magnesium phosphate one-component adhesive/grout is used to bond tiles, e.g. ceramic tiles, to a substrate, e.g. sheet-rock. The grout comprises an activator prepared by e.g., mixing diatomaceous earth with at least a sufficient amount of an ammonium phosphate solution to form a paste then heating the paste to coat the pores of the diatomaceous earth and result in a dry solid which is then milled to yield the activator, magnesium oxide, diammonium phosphate, boric acid, and sufficient water to form a paste. This grout is applied to the surfaces to be bonded which are then brought together to form a composite which is allowed to set at ambient temperatures forming a durable bond in about three hours.
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