摘要:
This invention is an improvement in a process by which a polyepoxide and a polyisocyanate are reacted to form an oxazolidone containing polymer or polymer precursor. This improvement comprises conducting said reaction in the presence of a catalytic amount of an organoantimony iodide catalyst. In such improved process, the oxazolidone forming reaction proceeds much more rapidly than the trimerization reaction of the polyisocyanate or the homopolymerization of the polyepoxide. As a result, the product polymer or polymer precursor contains a surprisingly small proportion of isocyanurates. In addition, the overall rate of reaction is substantially increased as compared to that achieved with conventional catalysts, thereby reducing the time and stringency of conditions required to form the desired product.
摘要:
An epoxy-functional resin composition including the reaction product of (a) a stoichiometric excess of at least one divinylarene dioxide, and (b) at least one of: a primary (1°) monoamine, a bis-secondary (2°) amine lacking nitrogen atoms, or mixtures thereof; a curable composition including (i) the epoxy-functional resin composition, and (ii) at least one curing agent; and a cured thermoset resin prepared from the curable composition.
摘要:
A two step method for preparing a filler composition, the filler composition useful to prepare a nanocomposite polymer and an epoxy nanocomposite coating. First, disperse a water dispersible filler material in a liquid comprising water, but without any added intercalation agent, to form a dispersion. Second, replace at least a portion of the water of the liquid with an organic solvent so that the water concentration of the liquid is less than six percent by weight to form the filler composition, the average size of at least one dimension of the filler material being less than two hundred nanometers upon examination by transmission electron microscopy of a representative freeze dried sample of the dispersion of the first step. A nanocomposite polymer can be prepared by mixing the filler composition with one or more polymer, polymer component, monomer or prepolymer to produce a polymer containing the filler composition.
摘要:
A curable divinylarene dioxide resin composition including (a) at least one divinylarene dioxide, and (b) at least one diphenol curing agent; a process for making the curable divinylarene dioxide resin composition; and a cured divinylarene dioxide resin composition made therefrom. The cured product made from the above curable divinylarene dioxide resin composition offers improved properties such as lower viscosity and a high heat resistance compared to known cured products prepared from known epoxy resins.
摘要:
An epoxy oxazolidone including the reaction product of (a) a divinylarene dioxide, and (b) an excess of a polyisocyanate to provide an epoxy oxazolidone composition; wherein the composition has an oxazolidone selectivity of greater than 40% relative to the total of the carbonyl compounds; a process for making the epoxy oxazolidone; and a curable epoxy resin composition including (i) the epoxy oxazolidone derived from a divinylarene dioxide such as divinylbenzene dioxide (DVBDO) and a polyisocyanate, (ii) at least one curing agent; and/or (iii) a catalyst. The cured product made from the above epoxy resin composition is thermally stable and offers improved properties such as a lower viscosity and a high heat resistance compared to known cured products prepared from known epoxy resins.
摘要:
A curable composition including (a) at least one cyclic diamine, (b) at least one non-heterocyclic amine that has a pKa value of approximately 9.5 to about 12 at 25° C. for the most basic amine group in the non-heterocyclic amine molecule, (c) at least one epoxy resin, and (d) at least one alkylated phenol; (i) wherein the equivalents of the amine hydrogens from the cyclic diamine compared to the total amine hydrogens from both the cyclic diamine and the non-heterocyclic amine in the composition are greater than about 5%; (ii) wherein the ratio of the equivalents of the total amine hydrogens in the composition to the equivalents of the total epoxies in the composition is greater than or equal to about 1; and (iii) wherein the alkylated phenol is in an amount greater than about 10 wt % of the curable composition.
摘要:
The present invention relates to new reactive monomer compositions that have a plurality of reactive, functional moieties, such as one or both of a hydroxyl moiety or a carboxylic acid moiety. The present invention also further relates to use of such reactive monomer compositions as a component of curable coating compositions, especially curable powder coating compositions.
摘要:
A curable divinylarene dioxide resin composition including (a) at least one divinylarene dioxide, (b) at least one cationic photoinitiator, and (c) optionally, at least one pigment material; a process for making the curable divinylarene dioxide resin composition; and a cured divinylarene dioxide resin composition made therefrom. The cured product made from the above curable divinylarene dioxide resin composition offers improved properties and are useful for various applications including ink formulations.
摘要:
A cyclic carbonate monomer including the reaction product of (a) a divinylarene dioxide, and (b) carbon dioxide; a process for making the cyclic carbonate monomer; and a polymer such as a poly(hydroxyurethane) composition made therefrom. The poly(hydroxyurethane) composition made from the above cyclic carbonate monomer forms a reactive intermediate that can be used for making, for example, a poly(hydroxyurethane) foam product.
摘要:
A solid epoxy resin powder coarting composition which includes a divinylarene dioxide resin as one component; and wherein the solid epoxy resin powder coating composition can be formed by blending or reacting various other components with the divinylarene dioxide resin. For example, other components can include other epoxy resins; phenolic resins; or monomeric and/or polymeric isocyanates. The powder coating composition or formulation may advantageously provide, for example, a Fusion Bonded Epoxy coating on a substrate.