Abstract New compositions of matter are provided which are substantially inorganic in composition and which are strongly resistive to deterioration by the action of light, air and/or water. The compositions are anhydrous mixtures of a silicate ester and a hydraulic cement, and such mixtures may contain a catalyst. The silicate ester may be an ethyl polysilicate and the moisture reactive filler may be a material such as portland cement. The alkaline catalyst may be a material such as an alkali metal alkoxide. The ingredients are uniformly blended and in use the mixture is exposed to air in the form desired, usually a thin coating. Upon exposure to the moisture in air, drying occurs with the formation of very hard finishes which are highly crack resistant.
A composition in accordance with claim 1 in which said filler is present in amounts of about 25% to about 90% based on the total weight of said mixture.
Claim 2
Dependent Claim
28 words
A composition in accordance with claim 2 in which said filler is present in amounts about 50% to about 80% based on the total weight of said mixture.
Claim 3
Dependent Claim
15 words
A composition in accordance with claim 1 which also contains zinc as a filler component.
Claim 4
Dependent Claim
21 words
A composition in accordance with claim 4 in which said hydraulic cement forms 5 to 25% of the total filler component.
Claim 5
Dependent Claim
39 words
A composition in accordance with claim 1 which contains a catalyst chosen from the group consisting of organic amines having a pKa greater than 7, alkali metal hydroxides, alkali metal alkoxides, alkaline-earth metal hydroxides and alkaline earth metal alkoxides.
Claim 6
Dependent Claim
28 words
A composition in accordance with claim 6 which contains about 0.1% to about 10% by weight of said catalyst based on the weight of the said polysilicate ester.
Claim 7
Dependent Claim
15 words
A composition in accordance with claim 1 in which said ester is an alkyl polysilicate.
Claim 8
Dependent Claim
15 words
A composition in accordance with claim 8 in which said alkyl polysilicate is ethyl silicate.
Claim 9
Dependent Claim
15 words
A composition in accordance with claim 1 in which said hydraulic cement is portland cement.
Claim 10
Dependent Claim
16 words
A composition in accordance with claim 1 in which said hydraulic cement is calcium aluminate cement.