US2005170944A1PendingUtilityA1

High performance blue glass

47
Priority: Jan 29, 2004Filed: Jan 29, 2004Published: Aug 4, 2005
Est. expiryJan 29, 2024(expired)· nominal 20-yr term from priority
Inventors:Mehran ArbabRobert B. HeithoffLarry J. ShelestakDennis Smith
C03C 3/091C03C 3/087C03C 4/02C03C 3/095
47
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A glass composition for forming a blue colored glass is disclosed. The glass composition is made up of a base glass portion, iron oxide, and at least one first additive compound selected from Nd 2 O 3 in an amount up to 1 weight percent and/or CuO in an amount up to 0.5 weight percent. The base glass portion has the following components: SiO 2 from 66 to 75 weight percent; Na 2 O from 10 to 20 weight percent; CaO from 5 to 15 weight percent; MgO from 0 to 5 weight percent; Al 2 O 3 from 0 to 5 weight percent; B 2 O 3 from 0 to 5 weight percent; and K 2 O from 0 to 5 weight percent. The total iron in the glass composition ranges from 0.3 to 1.2 weight percent, and the glass composition has a redox ratio ranging from 0.15 to 0.65.

Claims

exact text as granted — not AI-modified
1 . A glass composition for forming a blue colored glass comprising a base glass portion comprising: 
 a. SiO 2  from 66 to 75 weight percent;    b. Na 2 O from 10 to 20 weight percent;    c. CaO from 5 to 15 weight percent;    d. MgO from 0 to 5 weight percent;    e. Al 2 O 3  from 0 to 5 weight percent;    f. B 2 O 3  from 0 to 5 weight percent; and    g. K 2 O from 0 to 5 weight percent;    and additives consisting essentially of:    total iron from about 0.3 to 1.2 weight percent;    at least one first additive compound selected from Nd 2 O 3  in an amount up to 1 weight percent, CuO in an amount up to 0.5 weight percent, and combinations thereof; and    optionally one or more second additive compounds selected from CoO, Cr 2 O 3 , V 2 O 5 , CeO 2 , H 2 O, SO 3 , TiO 2 , ZnO, MoO 3 , NiO, Se, La 2 O 3 , WO 3 , Er 2 O 3 , SnO 2 , and MnO 2 ,    wherein the redox ratio of the composition ranges from 0.15 to 0.65 and the glass has a color characterized by a dominant wavelength up to 500 nm and an excitation purity no greater than 18 percent at a thickness of 0.154 inches.    
     
     
         2 . The glass composition of  claim 1 , wherein the redox ratio ranges from 0.25 to 0.5.  
     
     
         3 . The glass composition of  claim 2 , wherein the redox ratio ranges from 0.35 to 0.40.  
     
     
         4 . The glass composition of  claim 1 , wherein the total iron ranges from 0.4 to 0.8 weight percent.  
     
     
         5 . The glass composition of  claim 1 , wherein the glass has an LTA of at least 70%, an ISO Tuv no greater than 45%, an SAE Tuv no greater than 60%, an SAE Tsol no greater than 60%, and a TSIR no greater than 45% at a thickness of 0.154 inches.  
     
     
         6 . The glass composition of  claim 1 , wherein the glass has a color characterized by a dominant wavelength up to 495 nm and an excitation purity up to 15 percent at a thickness of 0.154 inches.  
     
     
         7 . The glass composition of  claim 5 , wherein the glass has an ISO Tuv no greater than 43% at a thickness of 0.154 inches.  
     
     
         8 . The glass composition of  claim 5 , wherein the glass has an SAE Tuv no greater than 58% at a thickness of 0.154 inches.  
     
     
         9 . The glass composition of  claim 5 , wherein the glass has an SAE Tsol no greater than 57% at a thickness of 0.154 inches.  
     
     
         10 . The glass composition of  claim 5 , wherein the glass has a TSIR no greater than 35% at a thickness of 0.154 inches.  
     
     
         11 . The glass composition of  claim 1 , wherein Nd 2 O 3  is present as the first additive compound.  
     
     
         12 . The glass composition of  claim 11 , wherein Nd 2 O 3  is present in an amount up to 0.7 weight percent based on the total weight of the glass composition.  
     
     
         13 . The glass composition of  claim 1 , wherein CuO is present as the first additive compound.  
     
     
         14 . The glass composition of  claim 13 , wherein CuO is present in an amount up to 0.3 weight percent based on the total weight of the glass composition.  
     
     
         15 . The glass composition of  claim 1  wherein the first additive compound comprises CuO and Nd 2 O 3 .  
     
     
         16 . The glass composition of  claim 1 , wherein CoO is present as a second additive compound in an amount up to 40 PPM.  
     
     
         17 . The glass composition of  claim 1 , wherein Cr 2 O 3  is present as a second additive compound in an amount up to 100 PPM.  
     
     
         18 . The glass composition of  claim 1 , wherein CeO 2  is present as a second additive compound in an amount up to 3.0 weight percent based on the total weight of the glass composition.  
     
     
         19 . A glass composition comprising a base glass portion comprising: 
 a. SiO 2  from 66 to 75 weight percent;    b. Na 2 O from 10 to 20 weight percent;    c. CaO from 5 to 15 weight percent;    d. MgO from 0 to 5 weight percent;    e. Al 2 O 3  from 0 to 5 weight percent;    f. B 2 O 3  from 0 to 5 weight percent; and    g. K 2 O from 0 to 5 weight percent;    and additives consisting essentially of:    total iron from about 0.3 to 1.2 weight percent;    at least one first additive compound selected from the group Nd 2 O 3  in an amount up to 1 weight percent, CuO in an amount up to 0.5 weight percent, and combinations thereof; and    optionally one or more second additive compounds selected from CoO, Cr 2 O 3 , V 2 O 5 , CeO 2 , H 2 O, SO 3 , TiO 2 , ZnO, MoO 3 , NiO, Se, La 2 O 3 , WO 3 , Er 2 O 3 , SnO 2 , and MnO 2 ,    wherein the redox ratio of the composition ranges from 0.15 to 0.65, and wherein the glass composition at a thickness of 0.154 inches has an LTA of at least 70%, an ISO Tuv no greater than 45%, an SAE Tuv no greater than 60%, an SAE Tsol no greater than 60%, and a TSIR no greater than 45%.    
     
     
         20 . The glass composition of  claim 19 , wherein the glass has an ISO Tuv no greater than 43% at a thickness of 0.154 inches.  
     
     
         21 . The glass composition of  claim 19 , wherein the glass has an SAE Tuv no greater than 55% at a thickness of 0.154 inches.  
     
     
         22 . The glass composition of  claim 19 , wherein the glass has an SAE Tsol no greater than 55% at a thickness of 0.154 inches.  
     
     
         23 . The glass composition of  claim 19 , wherein the glass has a TSIR no greater than 40% at a thickness of 0.154 inches.  
     
     
         24 . The glass composition of  claim 19 , wherein the glass has a color characterized by a dominant wavelength no greater than 500 nm and an excitation purity no greater than 18 percent at a thickness of 0.154 inches.  
     
     
         25 . The glass composition of  claim 19  wherein the redox ratio ranges from 0.25 to 0.50.  
     
     
         26 . The glass composition of  claim 24 , wherein the glass has a color characterized by a dominant wavelength up to 495 nm and an excitation purity up to 15 percent at a thickness of 0.154 inches.  
     
     
         27 . A glass composition comprising a base glass portion comprising: 
 a. SiO 2  from 66 to 75 weight percent;    b. Na 2 O from 10 to 20 weight percent;    c. CaO from 5 to 15 weight percent;    d. MgO from 0 to 5 weight percent;    e. Al 2 O 3  from 0 to 5 weight percent;    f. B 2 O 3  from 0 to 5 weight percent; and    g. K 2 O from 0 to 5 weight percent;    and additives consisting essentially of:    total iron from about 0.3 to 1.2 weight percent; and    at least one first additive compound selected from Nd 2 O 3  in an amount up to 1 weight percent, CuO in an amount up to 0.5 weight percent, and combinations thereof,    wherein the redox ratio of the composition ranges from 0.15 to 0.65 and the glass composition has an LTA of at least 70%, an ISO Tuv no greater than 45%, an SAE Tuv no greater than 60%, an SAE Tsol no greater than 60%, and a TSIR no greater than 45% at a thickness of 0.154 inches.    
     
     
         28 . A glass composition according to  claim 27 , wherein the glass has a color characterized by a dominant wavelength no greater than 500 nm and an excitation purity no greater than 18 percent at a thickness of 0.154 inches.  
     
     
         29 . A method for making blue colored glass comprising 
 a. mixing a glass composition according to  claim 1;  and    b. melting the glass composition.    
     
     
         30 . The method of  claim 29 , wherein the made glass comprises at least one piece of glass in an automobile windshield.  
     
     
         31 . The method of  claim 29 , wherein the made glass comprises at least one piece of glass in an architectural structure.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.