Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1976-06-17
1977-08-02
Garvin, Patrick P.
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
106296, 106299, C09C 136, C09C 104
Patent
active
040393470
ABSTRACT:
Zinc orthotitanate (Zn.sub.2 TiO.sub.4) suitable for use as a pigment for spacecraft thermal control coatings is prepared by heating a slightly zinc-deficient reaction mixture of precipitated oxalates of zinc and titanium. The reaction mixture can be formed by co-precipitation of zinc and titanium oxalates from chloride solution or by mixing separately precipitated oxalates. The mixture is first heated to 400.degree. to 600.degree. C to remove volatiles and is then rapidly heated at 900.degree. to 1200.degree. C. Zinc orthotitanate produced by this method exhibits the very fine particle size needed for thermal control coatings as well as stability in a space environment.
REFERENCES:
patent: 2140235 (1938-12-01), Lederle et al.
patent: 3337358 (1967-08-01), Vossen
patent: 3607338 (1971-09-01), Webb
Fletcher James C. Administrator of the National Aeronautics and Space
Gates Daniel W.
Gilligan John E.
Harada Yoshiro
Logan William R.
Beumer Joseph H.
Garvin Patrick P.
Howard J. V.
Manning John R.
Wofford, Jr. L. D.
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