Silicate-containing antifreeze with phosphonate silane stabilize

Details Silicate-containing antifreeze with phosphonate silane stabilize Silicate-containing antifreeze with phosphonate silane stabilize

1987-05-06

1988-09-20

Wax, Robert

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

252 783, 252 785, 528 30, 556405, C09K 500

Patent

active

047724080

ABSTRACT:
A silicone/silicate containing antifreeze characterized by dilute aqueous stability includes phosphonate silanes characterized by the following formula: ##STR1## wherein a is 0 or 1, b is 1 or 2, c is 0 or 1, R.sup.1 and R.sup.3 are selected from the group consisting of hydrogen, monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals, R.sup.2 is a divalent hydrocarbon radical selected from the group consisting of alkylene, arylene and alicyclic radicals, Z is a hydrolyzable moeity attached to silicon, and X is a member selected from the group consisting of hydrogen, monovalent hydrocarbon radicals, substituted monovalent hydrocarbon radicals, and a monovalent cation, the phosphonate silane having an appropriate hydrophile/hydrophobe balance and being present in an amount sufficient to stabilize the silicate.

REFERENCES:
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patent: 2995594 (1961-08-01), Fekete
patent: 3198820 (1965-08-01), Pines et al.
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patent: 4333843 (1982-06-01), Wing et al.
patent: 4367154 (1983-01-01), Jernigan
patent: 4370255 (1983-01-01), Plueddemann
patent: 4629602 (1986-12-01), Gousetis et al.

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