US2010095705A1PendingUtilityA1

Method for forming a dry glass-based frit

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Individually held — no corporate assignee on recordPriority: Oct 20, 2008Filed: Jul 16, 2009Published: Apr 22, 2010
Est. expiryOct 20, 2028(~2.2 yrs left)· nominal 20-yr term from priority
Inventors:Robert Scott BurkhalterLisa Ann LambersonRobert Michael MorenaShyamala ShanmugamCharlene Marie Smith
H10K 59/8722C03C 3/21C03C 8/16C03C 8/08C03C 8/20C03C 8/24C03C 27/06C03C 3/16H10K 50/8426
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Claims

Abstract

A dry glass-based fit, and methods of making a dry glass fit are disclosed. In one embodiment a dry glass frit comprises vanadium, phosphorous and a metal halide. The halide may be, for example, fluorine or chlorine. In another embodiment, a method of producing a dry glass frit comprises calcining a batch material for the frit, then melting the batch material in an inert atmosphere, such as a nitrogen atmosphere. In still another embodiment, a method of producing a dry glass frit comprises calcining a batch material for the frit, then melting the batch material in an air atmosphere, such as a nitrogen atmosphere

Claims

exact text as granted — not AI-modified
1 . A method of forming a glass frit comprising:
 forming a batch material comprising vanadium and phosphorous;   heating the batch material in a conditioning step to a temperature of between about 450° C. and 550° C. for at least about 1 hour;   melting the batch material after the conditioning step to form a glass melt;   cooling the glass melt to form a glass; and   wherein an outgassed water content of the glass is equal to or less than about 20 ppm.   
   
   
       2 . The method according to  claim 1 , further comprising grinding the glass to form a glass particulate. 
   
   
       3 . The method according to  claim 1 , wherein the glass comprises a O-OH equal to or less than about 0.3 mm −1 . 
   
   
       4 . The method according to  claim 2 , further comprising blending the glass particulate with a coefficient of thermal expansion lowering filler material. 
   
   
       5 . The method according to  claim 1 , wherein the batch material is heated in the conditioning step for a period of at least about 2 hours. 
   
   
       6 . The method according to  claim 1 , wherein the vanadium is V 2 O 5 . 
   
   
       7 . The method according to  claim 1 , wherein the phosphorous is P 2 O 5 . 
   
   
       8 . The method according to  claim 1 , wherein the glass is free of antimony 
   
   
       9 . The method according to  claim 1 , wherein the melting is performed in air. 
   
   
       10 . The method according to  claim 1 , wherein the melting is performed in a nitrogen atmosphere. 
   
   
       11 . The method according to  claim 1 , wherein the melting comprises heating the batch material to a temperature of at least about 1000° C. to melt the batch material. 
   
   
       12 . A glass powder for forming a glass-based frit, wherein the glass powder comprises vanadium, phosphorous and a metal halide. 
   
   
       13 . The glass powder according to  claim 12 , wherein the glass powder is free of antimony. 
   
   
       14 . A glass powder for forming a glass-based frit comprising V 2 O 5 , P 2 O 5  and a metal halide. 
   
   
       15 . The glass powder according to  claim 14 , wherein the metal halide comprises AlF 3 . 
   
   
       16 . The glass powder according to  claim 14 , wherein the glass powder comprises AlCl 3 . 
   
   
       17 . The glass powder according to  claim 14 , wherein the metal halide is selected from a halide of a metal selected from the group consisting of iron, vanadium and aluminum. 
   
   
       18 . The glass powder according to  claim 14 , wherein the glass powder is free of antimony. 
   
   
       19 . A method of forming a glass frit comprising:
 forming a batch material comprising V 2 O 5 , P 2 O 5  and a metal halide;   heating the batch material in a conditioning step to a temperature of between about 450° C. and 550° C. for at least about 1 hour;   melting the batch material after the conditioning step to form a glass melt;   cooling the glass melt to form a glass; and   wherein an OH content of the glass is equal to or less than about 20 ppm.   
   
   
       20 . The method according to  claim 19 , wherein the batch material comprises antimony. 
   
   
       21 . The method according to  claim 19 , wherein the glass comprises a β-OH equal to or less than about 0.3 
   
   
       22 . The method according to  claim 19 , wherein the batch material is heated in the conditioning step for a period of at least about 2 hours 
   
   
       23 . The method according to  claim 19 , wherein the melting is performed in air. 
   
   
       24 . The method according to  claim 19 , wherein the melting is performed in a nitrogen atmosphere.

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