Temperature indicating paint

Chemistry: analytical and immunological testing – Metal or metal containing – Mn – te – re – fe – ru – os – co – rh – ir – ni – pd – pt

Reexamination Certificate

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Details

C436S073000, C436S072000, C436S164000, C422S082120, C106S400000, C106S403000, C106S404000, C106S480000

Reexamination Certificate

active

06838286

ABSTRACT:
An irreversible temperature indicating paint comprises 29 wt % to 37 wt % cobalt zinc silicon blue phenacite and a frit, 35 wt % to 45 wt % acrylic resin and 20 wt % to 30 wt % silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9 wt % cobalt zinc silicon blue phenacite and a frit, 42.5 wt % acrylic resin and 22.6 wt % silicone resin excluding solvent. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of a gas turbine engine.

REFERENCES:
patent: 5238881 (1993-08-01), Norris
patent: 5747395 (1998-05-01), Smith et al.
patent: 6046121 (2000-04-01), Masuko et al.
patent: 1103059 (1968-02-01), None
patent: 2204874 (1988-11-01), None

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