Reactive liquid ceramic binder resin

Abstract

A reactive liquid ceramic binder suitable for the production of ceramic products from ceramic powders is provided. The reactive liquid ceramic binder contains organo-modified siloxane compounds, wherein the liquid organo-modified siloxane compounds contain organoalkoxysiloxane units according to general formula (I) wherein R 1 =alkyl radical and/or aryl radical, R 2 =H and/or alkyl radical with 1 to 4 carbon atoms, a≧0 and ≦2, and b>0 and ≦3, with the proviso that a+b≧1 and ≦4.

What is claimed as new is: 
     
         1 . A process for the production of shaped dimensionally stable ceramic products which comprises:
 a) mixing a ceramic binder with a ceramic powder to create a molding mix, said ceramic binder comprising at least one liquid organo-modified siloxane compound, wherein the at least one organo-modified siloxane compound contains organoalkoxy-siloxane units according to general formula (I)   
       
         
           
           
               
               
           
         
         wherein
 R 1 =an alkyl radical, an aryl radical or a mixture thereof, 
 R 2 =H, an alkyl radical with 1 to 4 carbon atoms or a mixture thereof, 
 a≧0 and ≦2, and 
 b>0 and ≦3, 
 with the proviso that a+b≧1 and ≦4; and 
 
         b) consolidating the molding mix obtained from step a) by one of pressure treatment and heat treatment, whereby a dimensionally stable ceramic product is obtained. 
       
     
     
         2 . The process as claimed in  claim 1 , wherein said ceramic binder is contained in the molding mix in a weight proportion of 0.01 wt. % to 70 wt. % based on the total weight of the ceramic powder. 
     
     
         3 . The process as claimed in  claim 1 , wherein the molding mix obtained from step a) is applied onto a dimensionally stable support. 
     
     
         4 . The process as claimed in  claim 1 , wherein a further additive substance and/or binder is added to the ceramic powder. 
     
     
         5 . The process as claimed in  claim 1 , wherein the consolidating comprises
 drying at a temperature of 50° C. to <200° C.; and/or   annealing at a temperature of ≧200° C. to <1,000° C.; and/or   firing at a temperature of ≧1,000° C.   
     
     
         6 . A process for the production of unshaped ceramic products comprising the following steps:
 a) mixing a reactive liquid ceramic binder with a ceramic powder, said reactive liquid ceramic comprises at least one liquid organo-modified siloxane compound, wherein the at least one organo-modified siloxane compound contains organoalkoxy-siloxane units according to general formula (I)   
       
         
           
           
               
               
           
         
         wherein
 R 1 =an alkyl radical, an aryl radical or a mixture thereof, 
 R 2 =H, an alkyl radical with 1 to 4 carbon atoms or a mixture thereof, 
 a≧0 and ≦2, and 
 b>0 and ≦3, 
 
         with the proviso that a+b≧1 and ≦4; 
         b) optionally adding additives, auxiliary agents and/or additive substance and/or other binders; and 
         c) manufacturing a ceramic mix. 
       
     
     
         7 . The process as claimed in  claim 6 , wherein the reactive liquid ceramic binder is contained in the ceramic material in a weight proportion of 0.01 wt. % to 70 wt. % based on the total weight of the ceramic powder.