Leucite-containing porcelains and method of making same

Details Leucite-containing porcelains and method of making same Leucite-containing porcelains and method of making same

1976-09-01

1978-07-18

Douglas, Winston A.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 35, C04B 3514, C04B 3300, C04B 3324

Patent

active

041013301

ABSTRACT:
A ceramic raw material essentially contains a pre-formed leucite filler which is obtained by reacting alumina, silica and potassium carbonate and/or oxide at a temperature of at least 1149.degree. C, and nepheline syenite. A leucite-nepheline syenite ceramic raw material which is useful as a dental porcelain powder contains 14 percent by weight of sodium-, potassium-, and lithium carbonates and 86 percent by weight of a 5 percent leucite/95 percent nepheline syenite mixture.
Upon fusing of the ceramic raw material of the invention, ceramic bodies are formed which have a crystalline leucite phase dispersed in a matrix of a glassy nepheline phase and any other constituents of the ceramic. The leucite provides the ceramic bodies with desirable properties of controlled thermal expansion and high strength.

REFERENCES:
patent: 2334319 (1943-11-01), Erdle
patent: 3585056 (1971-06-01), Bish
patent: 3651184 (1972-03-01), Everhart et al.

Affiliated with

Also associated with

Rating

Leucite-containing porcelains and method of making same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Leucite-containing porcelains and method of making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leucite-containing porcelains and method of making same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-337072