Metal oxide coatings

• US 7,652,157 B2
• Filed: 10/31/2007
• Issued: 01/26/2010
• Est. Priority Date: 06/22/2007
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Yakimov, Aharon, Kniajanski, Sergei
• Primary Examiner(s): Sullivan; Daniel M
• Assistant Examiner(s): Nwaonicha; Chukwuma O
• Application Number:
  US11/931,039
• Publication Number:
  US 20080319212A1
• Time in Patent Office: 818 Days
• Field of Search: 556/400
• US Class Current: 556/10
• CPC Class Codes: C07F 7/0836 Compounds with one or more Si-OH or Si-O-metal linkage
• CPC Class Codes: C07F 9/005 Compounds of elements of Group 5 of the Periodic Table without metal-carbon linkages

Abstract

Compounds of formula I may be hydrolyzed to produce metal oxides

wherein

• • M is Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Cd, In, Sn, Sb, La, Hf, Ta, W, Re, Os, Ir, Pt, Hg, Tl, Pb, Bi, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, U, or Pu;
  • X is O_1/2 or OR;
  • R is alkyl;
  • R¹, R², R³, R⁴, R⁵, R⁶, and R⁷ are independently H, alkoxy, C₁-C₁₀ alkyl, phenyl or

• • R¹⁰, R¹¹, R¹², R¹³, R¹⁴ and R¹⁵ are independently C₁-C₁₀ alkyl or phenyl;
  • n is equal to the the value of the oxidation state of M minus q;
  • m and p are independently 0 or an integer from 1 to 5; and
  • q is 0, 1, 2, or 4;
  • with the proviso that
    • when q is 1, X is OR; and
    • when q is 2, X is O_1/2, and M is V, Cr, Mn, Fe, As, Nb, Mo, Tc, Ru, Sb, Ta, W, Re, Os, Ir, Pt, Bi, Th, U, or Pu; and
    • when q is 4, X is O_1/2, and M is Cr, Mo, W, Ru, Re, Os, U, or Pu.

Articles comprising at least one metal oxide are fabricated by coating a substrate with at least one compounds of formula I before hydrolyzing, and/or heating the compound at a temperature ranging from about 50° C. to about 450° C.

Claims

1. A compound of formula I

2. A compound according to claim 1, wherein a Lewis base is coordinated to M.

3. A compound according to claim 1, wherein m and p are 0.

4. A compound according to claim 1, wherein M is Al, Ga, In, or Sn.

5. A compound according to claim 1, wherein M is Al or In.

6. A compound according to claim 1, wherein R¹, R², R³, R⁴, R⁵, R⁶, and R⁷ are independently H or methyl.

7. A compound according to claim 1, wherein R¹, R², R³, R⁴, R⁵, R⁶, and R⁷ are methyl.

8. A compound according to claim 1, of formula

9. A compound according to claim 1, of formula Sn(OSi(CH₃)₂OSi(CH₃)₃)₄.

10. A compound according to claim 1, of formula Al(OSi(CH₃)₂OSi(CH₃)₃)₃.

11. A compound according to claim 1, of formula In(OSi(CH₃)₂OSi(CH₃)₃)₃.