Polyorganometallosiloxane-2- or -4-pyridine coatings
AssigneeAssociated Universities, Inc.
InventorToshifumi Sugama
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Abstract
A new family of polyorganometallosiloxane-2- or -4-pyridine compounds are provided for corrosion resistant coatings on light metals such as aluminum, magnesium, zinc, steel and their allows. The novel compounds contain backbones modified by metal alkoxides, metallocenes and metallophthalocyanates where the metal is Zr, Ti, Mo, V, Hf, Nb, Si, B and combinations thereof. Methods of making the new compounds are also provided.
Claims17
A compound comprising an organometallic polymer having a repeating monomer of the formula ##STR7## wherein M is a metal derived from an organometallic moiety, said organometallic moiety selected from the group consisting of a metal alkoxide, a metallocene and a metallophtalocyanine, R is CH.sub.3, C.sub.2 H.sub.5 or C.sub.3 H.sub.7, x is 0, 1 or 2 and n is equal to or greater than 100.
A method of making an organometallic polymer having a repeating monomer unit of the formula ##STR9## wherein M is a metal derived from an organometallic moiety, in which said moiety is selected from the group consisting of a metal alkoxide, a metallocene and a metallophthalocyanine, R is CH.sub.3, C.sub.2 H.sub.5 or C.sub.3 H.sub.7, x is 0, 1 or 2 and n is equal to or greater than 100 which comprises:
- reacting a sol solution of .beta.-trimethoxysilylethyl-2-pyridine or .beta.-trimethoxysilylethyl-4-pyridine and a water-soluble organic solvent solution of a compound selected from the group consisting of
- (i) a metal alkoxide having the formula M(OR).sub.q, wherein R is selected from the group consisting of CH.sub.3, C.sub.2 H.sub.5 and C.sub.3 H.sub.7 and q is 2, 3 or 4;
- (ii) metallocene dihalide;
- and
- (iii) phtalocyaninedihalidemetals
- under hydrolysis-condensation conditions at temperatures from about 25.degree. C. to about 150.degree. C.
Dependencies are inferred from the claim text.