Uriah H Horn

US Patent:

45378622, Aug 27, 1985

Filed:

Apr 27, 1984

Appl. No.:

6/604560

Inventors:

Josef Francel - Toledo OH
Uriah Horn - Toledo OH
Daniel R. Stewart - Maumee OH

Assignee:

Owens-Illinois, Inc. - Toledo OH

International Classification:

C03C 100

US Classification:

501 14

Abstract:

Glass frit compositions are shown that are lead-free, cadmium-free, and zinc-free, the compositions having improved chemical resistance, especially acid resistance (acetic acid) of a loss of generally less than about 1. 9% by weight. The compositions contain B. sub. 2 O. sub. 3, SiO. sub. 2, ZrO. sub. 2 and rare earth oxides, the weight ratio of ZrO. sub. 2 to rare earth oxides being critical and being about 1/1 to 1. 4/1.

US Patent:

44462417, May 1, 1984

Filed:

Jun 28, 1982

Appl. No.:

6/392974

Inventors:

Josef Francel - Toledo OH
Daniel R. Stewart - Maumee OH
Uriah Horn - Toledo OH

Assignee:

Owens-Illinois, Inc. - Toledo OH

International Classification:

C03C 100

US Classification:

501 14

Abstract:

Glass frits for use in glazes or enamels have fiber softening point about 535. degree. -609. degree. C. are free of lead, cadmium and zinc and consist essentially of Li. sub. 2 O-B. sub. 2 O. sub. 3 -SiO. sub. 3 plus 2-23% SnO. sub. 2 +CaO and 2-23% ZrO. sub. 2 +La. sub. 2 O. sub. 3 ; also, Al. sub. 2 O. sub. 3, SrO, BaO, Na. sub. 2 O, F. Low expansion filler, e. g. , B-eucryptite, may be used at 4 to 15% by weight of glass frit.