Abstract:
An epoxy composition that includes an epoxy-terminated prepolymer, an alkanolamine hardener having at least one hydroxyl group and an organometallic compound, where amine groups of the alkanolamine hardener react with epoxy groups of the epoxy-terminated prepolymer in a stoichiometric ratio to form a cured epoxy composition. The epoxy-terminated prepolymer is formed from a reaction product of an amine terminated polymeric polyol and a molar excess of epoxy groups in an epoxy monomer, relative to a molar amount of amine groups in the amine terminated polymeric polyol.
Abstract:
The present invention relates to epoxy coating formulations that comprise an epoxy functional component comprising at least one epoxy functional ingredient comprising an average of at least 1.5 epoxy moieties per molecule; and an amine functional component comprising at least one polycyclic polyamine that comprises (i) a first cyclic structure comprising a first cyclic backbone, a first tertiary amine moiety having a first tertiary nitrogen atom that is a constituent of the first cyclic backbone, at least one additional amine moiety having a nitrogen atom that is a constituent of the first cyclic backbone, and optionally one or more additional amine moieties present in the cyclic backbone and/or in one or more groups pendant from the first cyclic backbone; (ii) a second cyclic structure comprising a second cyclic backbone, a second tertiary amine moiety having a second tertiary nitrogen atom that is a constituent of the second cyclic backbone, at least one additional amine moiety having a nitrogen atom that is a constituent of the second cyclic backbone, and optionally one or more additional amine moieties present in the cyclic backbone and/or in one or more groups pendant from the second cyclic backbone; and (iii) at least one linking group interconnecting the first tertiary nitrogen atom to the second tertiary nitrogen atom; and wherein the polycyclic polyamine has on average greater than one active amine moiety per molecule.
Abstract:
A process for producing a circuit-breaker pole part for use in a medium-voltage or high-voltage circuit-breaker comprising adjoining (a) an inner vacuum interrupter layer, (b) an intermediate compensation layer, and (c) an outer insulating sleeve layer, wherein the intermediate compensation layer is disposed between the inner vacuum interrupter layer and the outer insulating sleeve layer; wherein said layers are integrated with each other to form a circuit-breaker pole part; and wherein the intermediate compensation layer comprises the reaction product of (I) an epoxy-terminated prepolymer and (II) a curing agent; and a circuit-breaker pole part produced by the above process.
Abstract:
An epoxy terminated prepolymer formed as a reaction product of a cycloaliphatic epoxide resin and an amine terminated polymeric polyol, and a catalyst that promotes the reaction of the cycloaliphatic epoxide resin and the aminated polyol. The epoxy terminated prepolymer and an anhydride hardener react to form an epoxy elastomer composition having a microphase separated morphology of hard particles, formed with the anhydride hardener reacted with the epoxy terminated prepolymer, dispersed in a soft continuous phase formed from polymeric polyol in the epoxy terminated prepolymer.
Abstract:
An amine endcapped adduct composition including an amine endcapped adduct formed from a monofunctional epoxide and a polyether amine. The monofunctional epoxide and the polyether amine are combined in a molar ratio of 1.0:2.0 to 1.0:8.0 moles of epoxide functionalities to moles of polyether amine functionalities.
Abstract:
An epoxy terminated prepolymer formed as a reaction product of a cycloaliphatic epoxide resin and an amine terminated polymeric polyol, and a catalyst that promotes the reaction of the cycloaliphatic epoxide resin and the aminated polyol. The epoxy terminated prepolymer and an anhydride hardener react to form an epoxy elastomer composition having a microphase separated morphology of hard particles, formed with the anhydride hardener reacted with the epoxy terminated prepolymer, dispersed in a soft continuous phase formed from polymeric polyol in the epoxy terminated prepolymer.
Abstract:
Rapidly gelling epoxy resin systems include an epoxy resin, certain acrylate-functional compounds, and a curing agent mixture that includes a thiol curing agent and an amine curing agent. Gel times well less than 1 minute can be obtained. The ratio of acrylate-functional compound to thiol curing agent can be varied to adjust the gel time to precise values within a broad range.
Abstract:
The present invention relates to epoxy coating formulations that comprise an epoxy functional component comprising at least one epoxy functional ingredient comprising an average of at least 1.5 epoxy moieties per molecule; and an amine functional component comprising at least one polycyclic polyamine that comprises (i) a first cyclic structure comprising a first cyclic backbone, a first tertiary amine moiety having a first tertiary nitrogen atom that is a constituent of the first cyclic backbone, at least one additional amine moiety having a nitrogen atom that is a constituent of the first cyclic backbone, and optionally one or more additional amine moieties present in the cyclic backbone and/or in one or more groups pendant from the first cyclic backbone; (ii) a second cyclic structure comprising a second cyclic backbone, a second tertiary amine moiety having a second tertiary nitrogen atom that is a constituent of the second cyclic backbone, at least one additional amine moiety having a nitrogen atom that is a constituent of the second cyclic backbone, and optionally one or more additional amine moieties present in the cyclic backbone and/or in one or more groups pendant from the second cyclic backbone; and (iii) at least one linking group interconnecting the first tertiary nitrogen atom to the second tertiary nitrogen atom; and wherein the polycyclic polyamine has on average greater than one active amine moiety per molecule.
Abstract:
A flooring coating composition includes a coating agent that is a reaction product of an epoxy based formulation, the epoxy based formulation being at least one of an epoxy prepolymer formulation, an epoxy-silane hybrid formulation, and an epoxy thiol acrylate formulation. The coating agent in a cured state exhibits a first tan delta peak between a first temperature range of 75 C to 0 C and a second tan delta peak between a second temperature range of 20 C and 75 C, according to a tan delta plot over a range of temperatures. A value of the first tan delta peak and a value of the second tan delta peak each represents a ratio of a loss modulus of the coating agent and a storage modulus of the coating agent at a specific temperature within the range of temperatures, as measured according to dynamic mechanical thermal analysis. The values of the first and the second tan delta peaks are from 0.10 to 0.80.
Abstract:
An epoxy composition that includes an epoxy-terminated prepolymer, an alkanolamine hardener having at least one hydroxyl group and an organometallic compound, where amine groups of the alkanolamine hardener react with epoxy groups of the epoxy-terminated prepolymer in a stoichiometric ratio to form a cured epoxy composition. The epoxy-terminated prepolymer is formed from a reaction product of an amine terminated polymeric polyol and a molar excess of epoxy groups in an epoxy monomer, relative to a molar amount of amine groups in the amine terminated polymeric polyol.