The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 1980
Filed:
Apr. 13, 1978
Applicant:
Inventors:
Donald N Hunter, Bognor Regis, GB;
Lesley J Wyatt, Bognor Regis, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 85 ;
Abstract
A process for preparing a heat-settable casting or moulding composition comprises forming a mixture of a refractory oxide, preferably alumina, and a polyvalent metal polyphosphate, the polyvalent metal being preferably magnesium, aluminium, cobalt or zinc. The mixture is preferably formed by precipitating the polyvalent metal polyphosphate from an aqueous solution of an alkali metal polyphosphate in the presence of the refractory oxide by the addition of a water soluble polyvalent metal salt to the solution. The compositions are useful in making encapsulated or 'potted' components such as resistance thermometers and thermocouples.