Unsaturated polyester resin system for cured in-place piping

Abstract

A process to use an unsaturated polyester resin system comprising preparing a curable cumene-quat curing system. The cumene-quat curing system can comprise an unsaturated polyester resin, a peroxide initiator, a quaternary ammonium salt component, a 2,4-pentanedione component, and an inhibitor component. The peroxide initiator can comprise a cumene hydroperoxide component. The process can further comprise applying the curable cumene-quat curing system in a cured-in-place pipe rehabilitation process.

1 - 20 . (canceled) 
     
     
         21 . A process comprising:
 preparing a curable cumene-quat curing system, wherein the cumene-quat curing system comprises an unsaturated polyester resin, a liquid initiator, and an inhibitor component, and wherein the curable cumene-quat curing system has a pot-life of greater than about 18 hours around 25° C.;   applying the curable cumene-quat curing system to a cured-in-place pipe;   curing the cured-in-place pipe in a cured-in-place pipe rehabilitation process.   
     
     
         22 . The process according to  claim 21 , further comprising storing the prepared curable cumene-quat curing system at 25° C. for greater than 24 hours before applying the curable cumene-quat curing system to a cured-in-place pipe. 
     
     
         23 . The process according to  claim 21 , further comprising storing the prepared curable cumene-quat curing system for two weeks in a refrigerated area before applying the curable cumene-quat curing system to a cured-in-place pipe. 
     
     
         24 . The process according to  claim 21 , wherein the liquid initiator comprises a cumene hydroperoxide component. 
     
     
         25 . The process according to  claim 21 , wherein the curable cumene-quat curing system further comprises a 2,4-pentanedione component 
     
     
         26 . The process according to  claim 25 , wherein the 2,4-pentanedione component comprises more than 2500 ppm of the curable cumene-quat curing system. 
     
     
         27 . The process according to  claim 21 , wherein the inhibitor component comprises a 4-hydroxy-TEMPO solution. 
     
     
         28 . The process according to  claim 27 , wherein the 4-hydroxy-TEMPO solution comprises more than 1000 ppm of the curable cumene-quat curing system. 
     
     
         29 . The process according to  claim 22 , wherein the inhibitor component comprises more than 1000 ppm of the curable cumene-quat curing system. 
     
     
         30 . The process of  claim 21 , wherein the curable cumene-quat curing system further comprises a metal. 
     
     
         31 . The process of  claim 21 , wherein the liquid initiator comprises a single component. 
     
     
         32 . The process of  claim 21 , wherein the cured-in-place pipe is cured at 140 F in less than 15 minutes. 
     
     
         33 . A process comprising:
 preparing a resin curing system, wherein the resin curing system comprises a resin, a liquid initiator, and an inhibitor component and wherein the resin curing system has a pot-life of greater than about 18 hours around 25° C.;   applying the resin curing system in a cured-in-place pipe;   curing the cured-in-place pipe in a cured-in-place pipe rehabilitation process.   
     
     
         34 . The process according to  claim 33 , further comprising storing the prepared curable cumene-quat curing system at 25° C. for greater than 24 hours before applying the curable cumene-quat curing system to a cured-in-place pipe. 
     
     
         35 . The process according to  claim 33 , further comprising storing the prepared curable cumene-quat curing system for two weeks in a refrigerated area before applying the curable cumene-quat curing system to a cured-in-place pipe. 
     
     
         36 . The process according to  claim 33 , wherein the liquid initiator comprises a cumene hydroperoxide component. 
     
     
         37 . The process according to  claim 33 , wherein the inhibitor component comprises a 4-hydroxy-TEMPO solution. 
     
     
         38 . The process according to  claim 37 , wherein the 4-hydroxy-TEMPO solution comprises more than 1000 ppm of the curable cumene-quat curing system. 
     
     
         39 . The process of  claim 33 , wherein the curable cumene-quat curing system further comprises a metal. 
     
     
         40 . The process of  claim 33 , wherein the cured-in-place pipe is cured at 140 F in less than 15 minutes.