Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1976-05-10
1978-02-21
McCarthy, Helen M.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 40V, 106 734, 106 735, 427215, 428428, 429104, 429193, C03C 308
Patent
active
040750256
ABSTRACT:
An aqueous slurry comprising an intimate mixture of colloidal silica, (preferably an amorphous, precipitated, hydrated silica), caustic potash, boric acid and alumina is first prepared and then dried. The dried aggregates are thereafter crushed, calcined and rapidly quenched. It is preferred to dry the slurry in a spray drier and thereafter omit crushing after drying and to calcine the dried admixture by means of a plasma arc so that the mixture is rapidly quenched after calcination. The calcined mixture is introduced into a crusher, such as a ball mill, with a carbonaceous cellulating agent and reduced to a fine pulverulent material. The pulverulent material is then cellulated in a cellulating furnace to form cellular borosilicate bodies. Where desired, the calcined material may be utilized as a ceramic frit.
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Dislich, H. - "Preparation of Multicomponent Glasses without Fluid Melts" - Glastechnische Berichte, vol. 44, No. 1, Jan. 1971, pp. 1-8.
Adams John M.
McCarthy Helen M.
Pittsburgh Corning Corporation
Price, Jr,. Stanley J.
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