Lubricating fast setting epoxy composition

Abstract

A composition for a lubricating fast-setting epoxy compound comprising substantially equal amounts of an epoxy base and an epoxy accelerator. The epoxy base comprises: a first micro-crystalline filler, a first talc, a hardenable epoxide containing liquid; and a titanium oxide. The epoxy base can also include a flatting agent. The epoxy accelerator comprises: a second micro-crystalline filler, a second talc, a methylamino accelerator, and a hydrocarbon resin. The epoxy accelerator can also include a modified aliphatic amine, an acrylic resin, a coloring agent, or combinations thereof.

1 . A subsea mechanical joint, comprising:
 a first tubular member having a bell end and a second tubular member having a pin end, an interior of the bell end being sized to form an interference fit with the pin end of the second tubular member; and   a lubricating fast-setting epoxy composition applied to an interior of the bell end and an exterior of the pin end and comprising substantially equal amounts of an epoxy base and an epoxy accelerator, the composition being formed by a process comprising:   (a) forming the epoxy base by mixing under vacuum dispersion into a hardenable epoxide containing liquid:
 a first micro-crystalline filler; 
 a first talc; and 
 a titanium oxide; and 
   (b) forming the epoxy accelerator by mixing under vacuum dispersion:
 a second micro-crystalline filler; 
 a second talc; 
 a methyloamino accelerator; and 
 a hydrocarbon resin; and 
   (c) mixing the epoxy base with the epoxy accelerator;   wherein the epoxy composition is capable of complete curing within two to twelve minutes.   
     
     
         2 . The subsea mechanical joint of  claim 1 , wherein the epoxy base in (a) further comprises a flatting agent. 
     
     
         3 . The subsea mechanical joint of  claim 1 , wherein the epoxy accelerator in (b) further comprises a modified aliphatic amine, an acrylic resin, a coloring agent, or combinations thereof. 
     
     
         4 . The subsea mechanical joint, wherein the first micro-crystalline filler is selected from the group consisting of: crystalline silica, sodium silica, crystalline cellulose, amorphous silica, clay, calcium carbonate, graphite, carbon black, powdered copper, powdered aluminum, powdered barite, fumed silica, fused silica, and combinations thereof. 
     
     
         5 . The subsea mechanical joint of  claim 1 , wherein the first talc is a platy talc. 
     
     
         6 . The subsea mechanical joint of  claim 1 , wherein the hardenable epoxide containing liquid is selected from the group consisting of: an epichlorohydrin, a diglycidyl ether of 1,4-butanediol, a diglycidyl ether of neopentylglycol, a diglycidyl ether of cyclohexane dimethanol, and combinations thereof. 
     
     
         7 . The subsea mechanical joint of  claim 1 , wherein the titanium oxide is titanium dioxide, titanium trioxide, or combinations thereof. 
     
     
         8 . The subsea mechanical joint of  claim 2 , wherein the flatting agent is selected from the group consisting of: titanium dioxide, magnesium silica, zinc, amorphous silica, and combinations thereof. 
     
     
         9 . The subsea mechanical joint of  claim 1 , wherein the second micro-crystalline filler is selected from the group consisting of: crystalline silica, sodium silica, crystalline cellulose, amorphous silica, clay, calcium carbonate, graphite, carbon black, powdered copper, powdered aluminum, powdered barite, fumed silica, fused silica, and combinations thereof. 
     
     
         10 . The subsea mechanical joint of  claim 1 , wherein the second talc is a platy talc. 
     
     
         11 . The subsea mechanical joint of  claim 1 , wherein the methylamino accelerator is a dimethylanimo accelerator, a trimethylamino accelerator, or combinations thereof. 
     
     
         12 . The subsea mechanical joint of  claim 1 , wherein the methylamino-accelerator is selected from the group consisting of: dimethylaminoethanol, dimethylethanolamine, n,n,-dimethylaminoethanol, 2-(dimethylamino) ethanol, N,N,-dimethyl-2-hydroxyethylamine, 2,4,6 Tri(dimethylaminomethyl)phenol, and combinations thereof. 
     
     
         13 . The subsea mechanical joint of  claim 1 , wherein the hydrocarbon resin is a polyalphamethylstyrene. 
     
     
         14 . The subsea mechanical joint of  claim 3 , wherein the modified aliphatic amine is an aliphatic polyaminoamide. 
     
     
         15 . The subsea mechanical joint of  claim 14 , wherein the aliphatic polyaminoamide is a cycloaliphatic amine. 
     
     
         16 . The subsea mechanical joint of  claim 3 , wherein the acrylic resin is a thermoplastic. 
     
     
         17 . The subsea mechanical joint of  claim 3 , wherein the coloring agent is a phthalocyanine. 
     
     
         18 . The subsea mechanical joint of  claim 17 , wherein the phthalocyanine is a metal phthalocyanine. 
     
     
         19 . The subsea mechanical joint of  claim 18 , wherein the metal phthalocyanine is copper phthalocyanine, gold phthalocyanine, titanium phthalocyanine, cobalt phthalocyanine, or combinations thereof. 
     
     
         20 . The subsea mechanical joint of  claim 1 , wherein the epoxy base in (a) comprises:
 0.01 to 35 weight percent of the first micro-crystalline filler;   0.5 to 25 weight percent of a first talc;   50 to 90 weight percent of the hardenable epoxide containing liquid; and   from 0.01 to 15 weight percent of the titanium oxide.   
     
     
         21 . The subsea mechanical joint of  claim 2 , wherein the epoxy base in (a) comprises from 0.001 to 10 weight percent of the flatting agent. 
     
     
         22 . The subsea mechanical joint of  claim 1 , wherein the epoxy accelerator comprises:
 20 to 50 weight percent of the second micro-crystalline filler;   10 to 30 weight percent of the second talc;   0.01 to 60 weight percent of the methylamino accelerator; and   0.001 to 15 weight percent of the hydrocarbon resin.   
     
     
         23 . The subsea mechanical joint of  claim 3 , wherein the epoxy accelerator comprises 20 to 50 weight percent of the modified aliphatic amine, 0.001 to 10 weight percent of the acrylic resin, and 0.001 to 10 weight percent of the coloring agent. 
     
     
         24 . A subsea piping system comprising a plurality of interconnected adjoining tubular members, wherein each interconnected adjoining tubular member comprises the subsea mechanical joint of  claim 1 . 
     
     
         25 . The subsea mechanical joint of  claim 1 , wherein at least one of the first and second microcrystalline filler comprises graphite. 
     
     
         26 . The subsea piping system of  claim 24 , wherein at least one of the first and second microcrystalline filler comprises graphite.