US2005215715A1PendingUtilityA1

Blends of high temperature resins suitable for fabrication using powdered metal or compression molding techniques

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Individually held — no corporate assignee on recordPriority: Dec 19, 2003Filed: Dec 9, 2004Published: Sep 29, 2005
Est. expiryDec 19, 2023(expired)· nominal 20-yr term from priority
Inventors:Mark SchmeckpeperTimothy D. Krizan
B29C 43/003B29K 2079/08B29C 43/006C08L 79/08B29C 43/00C08L 79/00
45
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Claims

Abstract

The invention relates to a resin blend comprising at least two dry blended, non-melt processible resin particulates, wherein the at least two dry blended, non-melt processible resin particulates are molded by compression molding. The invention also relates to a process for producing a resin blend comprising mixing at least two non-melt processible resin particulates by dry blending and molding the mixture by compression molding. Another aspect of the invention is a resin blend comprising at least two blended, non-melt processible polyimide resin particulates, wherein the at least two blended, non-melt processible resin particulates are molded by compression molding.

Claims

exact text as granted — not AI-modified
1 . A resin blend comprising at least two dry blended, non-melt processible resin particulates, wherein the at least two dry blended, non-melt processible resin particulates are molded by compression molding.  
     
     
         2 . The resin blend of  claim 1  having a moisture pickup level less than an expected moisture pickup level of the at least two dry blended, non-melt processible resin particulates.  
     
     
         3 . The resin blend of  claim 1  or  2 , wherein at least one dry blended, non-melt processible resin particulate is a polyimide resin particulate.  
     
     
         4 . The resin blend of  claim 3 , wherein the polyimide resin particulate is present in an amount of from about 5 weight percent to about 95 weight percent of the total resin blend.  
     
     
         5 . The resin blend of  claim 1  or  2 , wherein the at least two dry blended, non-melt processible resin particulates are polyimide resin particulates.  
     
     
         6 . The resin blend of  claim 1  or  2 , wherein the at least two dry blended, non-melt processible resin particulates have an average particle size of from about 5 μm to about 500 μm.  
     
     
         7 . The resin blend of  claim 1  or  2 , further comprising at least one encapsulated filler.  
     
     
         8 . The resin blend of  claim 7 , wherein the at least one encapsulated filler is present in an amount of from about 1 weight percent to about 70 weight percent of the total resin blend.  
     
     
         9 . The resin blend of  claim 1  or  2 , further comprising at least one unencapsulated filler.  
     
     
         10 . The resin blend of  claim 9 , wherein the at least one unencapsulated filler is present in an amount of from about 1 weight percent to about 15 weight percent of the total resin blend.  
     
     
         11 . A compression molded article comprising the resin blend of any of claims  1 - 10 .  
     
     
         12 . A method of producing a compression molded article comprising: 
 (a) mixing at least two non-melt processible resin particulates by dry blending; and    (b) molding the mixture of step (a) by compression molding.    
     
     
         13 . The method of  claim 12 , wherein at least one non-melt processible resin particulate is a polyimide resin particulate.  
     
     
         14 . The method of  claim 12 , wherein the at least two non-melt processible resin particulates are polyimide resin particulates.  
     
     
         15 . The method of  claim 12  further comprising the step of adding at least one filler.  
     
     
         16 . A compression molded article produced by the method of  claim 12 .  
     
     
         17 . A resin blend comprising at least two blended, non-melt processible polyimide resin particulates, wherein the at least two blended, non-melt processible polyimide resin particulates are molded by compression molding.  
     
     
         18 . A compression molded article comprising the resin blend of  claim 17.

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