US20080146470A1 - Lubricating fast setting epoxy composition - Google Patents

Lubricating fast setting epoxy composition Download PDF

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Publication number
US20080146470A1
US20080146470A1 US11/760,567 US76056707A US2008146470A1 US 20080146470 A1 US20080146470 A1 US 20080146470A1 US 76056707 A US76056707 A US 76056707A US 2008146470 A1 US2008146470 A1 US 2008146470A1
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composition
epoxy
accelerator
weight
comprises
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Abandoned
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US11/760,567
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Robert J. Logan
Teresa Leigh Barr
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Zap-Lok Pipeline Systems Inc
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Zap-Lok Pipeline Systems Inc
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Priority to US11/612,362 priority Critical patent/US20080143101A1/en
Priority to US11/612,376 priority patent/US20080143104A1/en
Priority to US11/612,349 priority patent/US20080143099A1/en
Application filed by Zap-Lok Pipeline Systems Inc filed Critical Zap-Lok Pipeline Systems Inc
Priority to US11/760,567 priority patent/US20080146470A1/en
Assigned to ZAP-LOK PIPELINE SYSTEMS, INC. reassignment ZAP-LOK PIPELINE SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LOGAN, ROBERT J., BARR, TERESA
Priority claimed from PCT/US2007/087992 external-priority patent/WO2008077072A2/en
Publication of US20080146470A1 publication Critical patent/US20080146470A1/en
Application status is Abandoned legal-status Critical

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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M159/00Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/12Reaction products
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/20Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
    • C08G59/22Di-epoxy compounds
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/50Amines
    • C08G59/54Amino amides>
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/62Alcohols or phenols
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04Mixtures of base-materials and additives
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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/041Carbon; Graphite; Carbon black
    • C10M2201/0416Carbon; Graphite; Carbon black used as thickening agents
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    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/05Metals; Alloys
    • C10M2201/056Metals; Alloys used as thickening agents
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    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06Metal compounds
    • C10M2201/062Oxides; Hydroxides; Carbonates or bicarbonates
    • C10M2201/0626Oxides; Hydroxides; Carbonates or bicarbonates used as thickening agents
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    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10Compounds containing silicon
    • C10M2201/102Silicates
    • C10M2201/103Clays; Mica; Zeolites
    • C10M2201/1036Clays; Mica; Zeolites used as thickening agents
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    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10Compounds containing silicon
    • C10M2201/105Silica
    • C10M2201/1056Silica used as thickening agents
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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/04Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
    • C10M2205/043Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene used as base material
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    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084Acrylate; Methacrylate
    • C10M2209/0845Acrylate; Methacrylate used as base material
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/1003Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds used as base material
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/12Polysaccharides, e.g. cellulose, biopolymers
    • C10M2209/126Polysaccharides, e.g. cellulose, biopolymers used as thickening agents
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/044Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms having cycloaliphatic groups
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    • C10M2215/00Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/08Amides
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    • C10M2227/00Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/09Complexes with metals
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/02Group II, e.g. Mg, Ca, Ba, Zn, Cd, Hg
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    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/03Group III, e.g. Al, In, La
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    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/04Group IV, e.g. Sn, Pb, Ti, Zr
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    • C10N2210/00Nature of the metal present as such or in compounds, i.e. in salts
    • C10N2210/07Group VII or VIII
    • C10N2210/08Mn, Fe, Co, Ni
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    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2240/00Specified uses or applications of lubricating compositions
    • C10N2240/22Lubricating sealants
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    • C10N2250/00Form or state of lubricant compositions in which they are used
    • C10N2250/08Solids
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    • C10N2270/00Specific manufacturing methods for lubricant compositions or compounds not covered by groups C10N2210/00 - C10N2260/00

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.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This patent application is a continuation-in-part application that claims the benefit, under 35 USC §120, of the prior non-provisional applications having Ser. No. 11/612,376, filed Dec. 18, 2006, Ser. No. 11/612,362, filed Dec. 18, 2006, and Ser. No. 11/612,349, filed Dec. 18, 2006. The prior co-pending non-provisional applications are incorporated by reference along with their appendices.
  • FIELD
  • The present embodiments relate to a composition for a lubricating fast-setting epoxy compound.
  • BACKGROUND
  • A need exists for a fast-setting epoxy compound capable of curing rapidly, in as little two to twelve minutes, to allow the use of coated materials, such as subsea pipe joints, very soon after application rather than waiting hours for conventional epoxy to cure.
  • A further need exists for a fast-setting epoxy compound capable of lubricating surfaces, such as surfaces of steel pipes, to enable connections and interference fits without galling or bending the material, then curing rapidly to avoid separation of connected materials.
  • A need also exists for a fast-setting epoxy compound that is resistant to blushing and bubbling, to allow for even and smooth application to surfaces.
  • An additional need exists for a fast-setting epoxy compound that cures rapidly at ambient temperatures and high humidity, and is therefore ideal for marine and subsea use.
  • The present embodiments meet these needs.
  • DETAILED DESCRIPTION OF THE EMBODIMENTS
  • Before explaining the present embodiments in detail, it is to be understood that the embodiments are not limited to the particular embodiments and that they can be practiced or carried out in various ways.
  • One advantage of the present composition is that the present composition for a fast-setting epoxy compound creates an epoxy compound that can provide lubrication to surfaces, especially metal surfaces, such as those of steel pipes. Through suspension of one or more micro-crystalline fillers, such as graphite and silica, in the composition, high lubricity is achieved, while the micro-crystalline fillers simultaneously fill porous surfaces such as those of steel pipes.
  • An additional advantage of the present composition for a fast-setting epoxy compound is that the epoxy compound can cure in as little as two to twelve minutes. Conventional epoxies can require multiple hours to fully cure. The fast-curing nature of the present composition allows connections formed using lubricated surfaces, such as interference fits in metal pipe joints, to be assembled and used rapidly. An interference fit or a similar connection can become disassembled during use if the lubricating compound used to form the connection has not yet fully cured.
  • A further advantage of the present composition is provided through the use of a suspended micro-crystalline filler in the fast-setting epoxy compound. A micro-crystalline filler provides superior lubricity to the compound, while simultaneously filling porous surfaces, such as those of steel, which further enhances lubricity. Conventional epoxy compositions do not combine a suspended micro-crystalline filler with a fast curing time.
  • Still another advantage of the present composition is the ability of the fast-setting epoxy compound to cure at ambient temperatures in high humidity. Conventional epoxies often do not cure, or cure more slowly in the presence of moisture or in very high or low ambient temperatures. The present composition is extremely resistant to moisture and blushing. Additionally, the present composition's resistance to moisture helps to inhibit bubbling, allowing the fast-setting epoxy compound to be applied smoothly and evenly to surfaces.
  • The present composition for a fast-setting epoxy compound is formed by mixing substantially equal amounts of an epoxy base with an epoxy accelerator.
  • The epoxy base contains 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 first micro-crystalline filler of the epoxy base can be 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.
  • A preferable first micro-crystalline filler is a mixture of crystalline silica and graphite, due to the added lubricity provided by graphite, as well as the ability of graphite to act as a filler for porous surfaces, such as steel. However, other micro-crystalline fillers can also provide lubricity and fill porous surfaces.
  • It is contemplated that the first micro-crystalline filler can comprise from bout 0.01 to about 35 percent of the epoxy base by weight, with a preferred weight percent of 24%.
  • The first talc, present in the epoxy base, is contemplated to be magnesium silica, and can be a platy talc. Although talc is hydrophobic, it disperses easily in both aqueous and solventborne coatings. Due to its shape, talc has a beneficial effect on rheology and contributes to improved brushability, leveling, and sag resistance. Talc is also generally self-suspending in epoxy vehicles and assists in keeping other pigments suspended. Further, talc is readily redispersed.
  • Talc improves the toughness and durability of the fast-setting epoxy compound. Talc plates can align with the flow of an epoxy coating to be parallel to the substrate after the epoxy cures, creating a physical barrier to the transmission of moisture, thereby improving water and humidity resistance. The reinforcement provided by platy talc can improve the resistance of the cured epoxy to cracking or rupture due to stretching and flexing, thus better insulating the epoxy from the environment.
  • The barrier properties, alkaline pH, and reinforcement provided by talc contributes to inhibition of corrosion. Micronized talcs, such as 6 Hegman and finer, can be used for titanium dioxide extension, provide good low angle sheen, and good burnishing resistance. Macrocrystalline talcs can also be used as a flatting agent.
  • It is contemplated that the first talc can comprise from about 0.5 to about 25 percent of the epoxy base by weight, with a preferred weight percent of 18%.
  • The hardenable epoxide containing liquid of the epoxy base is used as an epoxy resin and can be selected from the group commonly known as bisphenol A (epichlorohydrin). The hardenable epoxide containing liquid can include a diglycidyl ether of 1,4-butanediol, a diglycidyl ether of neopentylglycol, a diglycidyl ether of cyclohexane dimethanol, and combinations thereof.
  • It is contemplated that the hardenable epoxide containing liquid can comprise from about 50 to about 90 percent of the epoxy base by weight, with a preferred weight percent of approximately 54%.
  • Titanium oxide, present in the epoxy base, can be a titanium dioxide, a titanium trioxide, or combinations thereof, preferably titanium dioxide. Titanium dioxide can be obtained from Huntsman Tioxide under the trade names of TR60 and TR93. Titanium dioxide can be used both as a dispersion agent and a pigment.
  • It is contemplated that titanium dioxide can comprise from about 0.01 to about 15 percent of the epoxy base by weight, with a preferred weight percent of 4%.
  • If the epoxy base includes a flatting agent, the flatting agent can be titanium dioxide, magnesium silica, zinc, amorphous silica, or combinations thereof. A preferred flatting agent is zinc, due to zinc's added function as an anti-corrosive agent.
  • It is contemplated that the flatting agent can comprise from about 0.001 to about 10 percent of the epoxy base by weight, with a preferred weight percent of 1%.
  • The epoxy accelerator contains 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.
  • The second micro-crystalline filler, present in the epoxy accelerator can be 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.
  • A preferred second micro-crystalline filler can be crystalline silica. Crystalline silica is a thixotropic additive which, when dispersed, increases viscosity, imparts thixotropic behavior, and adds anti-sag and anti-setting characteristics. Crystalline silica can be obtained from the Degussas Corporation under the trade name Aerosil 300.
  • Synthetic fused silica is an alternative preferred second micro-crystalline filler. Synthetic fused silica is made from a silica-rich chemical precursor, resulting in a transparent amorphous solid with an ultra-high purity and excellent optical transmission.
  • It is contemplated that the second micro-crystalline filler can comprise from about 20 to about 50 percent of the epoxy accelerator by weight, with a preferred weight percent of 33%.
  • The second talc, present in the epoxy accelerator, is contemplated to be magnesium silica, and can be a platy talc, a micronized talc, such as 6 Hegman or finer, a macrocrystalline talc, or anther talc. The second talc can be the same type of talc as the first talc, or a different kind of talc.
  • It is contemplated that the second talc can comprise from 10 to 30 percent of the epoxy accelerator by weight, with a preferred weight percent of 16%.
  • The methylamino accelerator of the epoxy accelerator can be a dimethylamino accelerator, a trimethylamino accelerator, or similar accelerators. The first methylamino accelerator can be dimethylaminoethanol, dimethylethanolamine, n,n,-dimethylaminoethanol, 2-(dimethylamino)ethanol, N,N,-dimethyl-2-hydroxyethylamine, triethanolamine, piperazine, n-aminoethylpiperazine, 2-4-6 Tri(dimethylaminomethyl)phenol, and combinations thereof.
  • A preferred methylamino accelerator is 2-4-6 Tri(dimethylanimomethyl)phenol.
  • It is contemplated that the methylamino accelerator can comprise from about 0.01 to about 60 percent of the epoxy accelerator by weight, with a preferred weight percent of 45%.
  • The hydrocarbon resin of the epoxy accelerator can be a polyalphamethylstyrene, such as those obtainable from the Aldrich Chemical Company.
  • Polyalphamethylstyrenes undergo specific chain scission with breakage occurring only at its ends. Polyalphamethylstyrenes depolymerize to become the constituent monomer present in the epoxy accelerator.
  • It is contemplated that the hydrocarbon resin can comprise from 0.001 to 15 percent of the epoxy base by weight, with a preferred weight percent of approximately 5%.
  • If the epoxy accelerator includes a modified aliphatic amine, the modified aliphatic amine can be an aliphatic polyaminoaminde. Aliphatic polyaminoamides are room temperature reacting curing agents derived from aliphatic amines that have been modified to reduce their vapor pressure, thereby reducing their corrosiveness. The modifications optimize the hardness, reactivity, handling time, and carbonation resistance of the aliphatic amines.
  • Aliphatic polyaminoamindes exhibit high reactivity, low viscosity, and excellent resistance to organic acids and solvents with good adhesion to concrete and steel. Aliphatic polyaminoamides are available from Air Products under the Tradename of Anacamine 2423.
  • The aliphatic polyaminoamide can be a cycloaliphatic amine which can provide improved resistance to aqueous solutions, solvents, and mineral acids comparable to an aromatic amine cured composition. Cycloaliphatic curing agents provide good color stability, superior resistance to carbamation, superior chemical resistance, and good water spotting and amine blush properties.
  • Aliphatic polyaminoamides are preferred due to exhibiting a rapid cure time at room temperature in the presence of humidity. Aliphatic polyaminoamides can be used to cure the fast-setting epoxy composition by reacting with epoxide groups or promoting self-polymerization of the epoxy by catalytic action.
  • It is contemplated that the modified aliphatic amine can comprise from about 20 to about 50 percent of the epoxy accelerator by weight, with a preferred weight percent of 35%.
  • If the epoxy accelerator includes an acrylic resin, the acrylic resin is contemplated to be a glassy thermoplastic, which can be used in coating, adhesives, and numerous thermoplastic or thermosetting polymers or copolymers of acrylic acid, methacrylic acid, esters of these acids, or acrylonitrile, used to produce paints, synthetic rubbers, and lightweight plastics.
  • The acrylic resin can comprise from about 0.001 to about 10 percent of the epoxy accelerator by weight, with a preferred weight percent of 0.85%.
  • If the epoxy accelerator includes a coloring agent, the coloring agent can be a phthalocyanine, though use of other coloring agents is also contemplated.
  • The phthalocyanine can be a metal phthalocyanine, such as copper phthalocyanine, gold phthalocyanine, titanium phthalocyanine, cobalt phthalocyanine, and combinations thereof. A dispersion of copper phthalocyanine is preferred. Copper phthalocyanine is a phthalo blue or green dispersion, which can be used as a pigment. Copper phthalocyanine is advantageous because it does not cause flocculation, which is the aggregation or grouping together of pigment particles, causing a reduction in pigment tinting power. Copper phthalocyanine exhibits a clean tint and good light qualities.
  • It is contemplated that the coloring agent can comprise from about 0.001 to about 10 percent of the epoxy accelerator by weight, with a preferred weight percent of 1%.
  • In a preferred embodiment, the epoxy base can include the following:
  • Bisphenol A 54% by weight
    Crystalline Silica 24% by weight
    Magnesium Silica (Talc) 18% by weight
    Titanium Dioxie  4% by weight

    and the epoxy accelerator can include the following:
  • 2-4-6 Tri(dimethyl aminomethyl) Phenol 45% by weight
    Crystalline Silica 33% by weight
    Magnesium Silica (Talc) 16% by weight
    Polyalphamethylstyrene  5% by weight
    Green Color  1% by weight
  • In an alternative preferred embodiment, the epoxy accelerator can include the following:
  • Aliphatic Polyaminoamide 35% by weight
    Crystalline Silica 30% by weight
    Magnesium Silica (Talc) 21% by weight
    2-4-6 Tri(dimethyl aminomethyl) Phenol 8.15% by weight  
    Polyalphamethylstyrene  4% by weight
    Phthalo Blue Color  1% by weight
    Acrylic Resin 0.85% by weight  
  • An embodiment of the present composition for a fast-setting epoxy compound can be produced by the following method:
  • The first micro-crystalline filler, the first talc, and the titanium oxide can be mixed into the hardenable epoxide containing liquid to form the epoxy base. The mixing can be done in a special vacuum tank having impellers and performed under vacuum dispersion. A flatting agent can also be mixed into the hardenable epoxide containing liquid.
  • The vacuum on the vacuum tank can be started before starting the impellers are started, thereby evacuating air before the mixing causes any air entrapment. After high vacuum is achieved, both impellers can be started, thus providing rapid dispersion with no air entrapment.
  • The impellers can be started at a low speed and gradually increased slowly to increase circulation. The impellers can be increased the to maximum dispersing speed while staying within the limitation of the impeller motor amperage rating. The speeds of both impeller shafts can be charged simultaneously and adjusted slowly to reach the optimum point of flow and dispersion without creating cavitations in the epoxy base.
  • If the mixing creates a temperature approaching or exceeding 160 degrees centigrade, which can denature the ingredients, the mixing can be slowed or stopped to reduce the temperature. After the epoxy base has reached a satisfactory degree of dispersion, both impellers can continue mixing until a homogenous state is reached. After the homogenous state is reached, the vacuum tanks can be sealed to prevent air from contacting the epoxy base until it is to be mixed with the epoxy accelerator.
  • The second micro-crystalline filler, the second talc, and the hydrocarbon resin can be mixed to form an accelerator mixture. The accelerator mixture can be mixed using the same procedure by which the epoxy base was mixed. A modified aliphatic amine, an acrylic resin, a coloring agent, or combinations thereof can also be mixed into the accelerator mixture.
  • The methylamino accelerator can then be mixed into the accelerator mixture forming the epoxy accelerator, which can also be sealed to prevent contact with air until the epoxy accelerator is to be mixed with the epoxy base.
  • When ready for use, substantially equal amounts of the epoxy base and the epoxy accelerator can be mixed, forming a lubricating fast-setting epoxy compound having a high lubricity, sufficient to press two segments of steel pipe in an interference fit using a hydraulic press without damaging the pipe segments or galling the metal. The lubricating fast-setting epoxy compound further has a curing time ranging from two to twelve minutes, allowing sufficient time for the compound to be applied to lubricate a surface and utilized, then curing very shortly thereafter.
  • The mixing can be done using a banbury mixer, a high shear mixer, a dispersion machine, a stone mill, a ball mill, a roller mill, a vacuum tank having at least one impeller, or combinations thereof. In a preferred embodiment, a vacuum tank operably connected to a dispersion machine having a low speed impeller and a high speed impeller is used.
  • The mixing can be done using constant agitation, variable agitation, intermittent agitation, gradually increasing agitation, or combinations thereof.
  • It is contemplated that the epoxy base, the accelerator mixture, the epoxy accelerator, or combinations thereof can be heated during mixing, to a temperature ranging from about 10 degrees centigrade to about 160 degrees centigrade, to promote homogeneity. The mixing can be slowed or stopped to prevent the temperature from exceeding 160 degrees centigrade.
  • The mixing speed can be adjusted as needed to promote or maintain homogeneity and produce small amounts of heat as needed. The temperature can also be adjusted as needed to promote homogeneity.
  • While these embodiments have been described with emphasis on the embodiments, it should be understood that within the scope of the appended claims, the embodiments might be practiced other than as specifically described herein.

Claims (23)

1. A composition for a lubricating fast-setting epoxy compound comprising substantially equal amounts of an epoxy base and an epoxy accelerator,
wherein the epoxy base comprises:
a first micro-crystalline filler;
a first talc;
a hardenable epoxide containing liquid;
a titanium oxide; and
wherein the epoxy accelerator comprises:
a second micro-crystalline filler;
a second talc;
a methyloamino accelerator; and
a hydrocarbon resin.
2. The composition of claim 1, wherein the epoxy base further comprises a flatting agent.
3. The composition of claim 1, wherein the epoxy accelerator further comprises a modified aliphatic amine, an acrylic resin, a coloring agent, or combinations thereof.
4. The composition of claim 1, 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 composition of claim 1, wherein the first talc is a platy talc.
6. The composition 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 composition of claim 1, wherein the titanium oxide is titanium dioxide, titanium trioxide, or combinations thereof.
8. The composition 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 composition 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 composition of claim 1, wherein the second talc is a platy talc.
11. The composition of claim 1, wherein the methylamino accelerator is a dimethylanimo accelerator, a trimethylamino accelerator, or combinations thereof.
12. The composition 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, triethanolamine, piperazine, n-aminoethylpiperazine, 2,4,6 Tri(dimethylaminomethyl)phenol, and combinations thereof.
13. The composition of claim 1, wherein the hydrocarbon resin is a polyalphamethylstyrene.
14. The composition of claim 3, wherein the modified aliphatic amine is an aliphatic polyaminoamide.
15. The composition of claim 14, wherein the aliphatic polyaminoamide is a cycloaliphatic amine.
16. The composition of claim 3, wherein the acrylic resin is a thermoplastic.
17. The composition of claim 3, wherein the coloring agent is a phthalocyanine.
18. The composition of claim 17, wherein the phthalocyanine is a metal phthalocyanine.
19. The composition of claim 18, wherein the metal phthalocyanine is copper phthalocyanine, gold phthalocyanine, titanium phthalocyanine, cobalt phthalocyanine, or combinations thereof.
20. The composition of claim 1, wherein the first micro-crystalline filler comprises from 0.01 to 35 percent of the epoxy base by weight;
the first talc comprises from 0.5 to 25 percent of the epoxy base by weight;
the hardenable epoxide containing liquid comprises from 50 to 90 percent of the epoxy base by weight; and
the titanium oxide comprises from 0.01 to 15 percent of the epoxy base by weight.
21. The composition of claim 2, wherein the flatting agent comprises from 0.001 to 10 percent of the epoxy base by weight.
22. The composition of claim 1, wherein
the second micro-crystalline filler comprises from 20 to 50 percent of the epoxy accelerator by weight;
the second talc comprises from 10 to 30 percent of the epoxy accelerator by weight;
the methylamino accelerator comprises from 0.01 to 60 percent of the epoxy accelerator by weight; and
the hydrocarbon resin comprises from 0.001 to 15 percent of the epoxy accelerator by weight.
23. The composition of claim 3, wherein the modified aliphatic amine comprises from 20 to 50 percent of the epoxy accelerator by weight, the acrylic resin comprises from 0.001 to 10 percent of the epoxy accelerator by weight, and the coloring agent comprises from 0.001 to 10 percent of the epoxy accelerator by weight.
US11/760,567 2006-12-18 2007-06-08 Lubricating fast setting epoxy composition Abandoned US20080146470A1 (en)

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US11/612,362 US20080143101A1 (en) 2006-12-18 2006-12-18 Subsea Mechanical Joint
US11/612,376 US20080143104A1 (en) 2006-12-18 2006-12-18 Subsea Piping System
US11/612,349 US20080143099A1 (en) 2006-12-18 2006-12-18 Method For Forming A Subsea Mechanical Joint
US11/760,567 US20080146470A1 (en) 2006-12-18 2007-06-08 Lubricating fast setting epoxy composition

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US11/760,567 US20080146470A1 (en) 2006-12-18 2007-06-08 Lubricating fast setting epoxy composition
EP07869455.1A EP2102540A4 (en) 2006-12-18 2007-12-18 Subsea piping system and formulation
PCT/US2007/087992 WO2008077072A2 (en) 2006-12-18 2007-12-18 Subsea piping system and formulation
US13/117,623 US20110247713A1 (en) 2006-12-18 2011-05-27 Lubricating fast setting epoxy composition

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EP2102540A2 (en) 2009-09-23

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