Polyamide hardeners for epdxy resins

A polyamide composition comprising a reaction product of: a) an excess of a polyfunctional amine; b) a dimer fatty acid; and c) a monomer fatty acid is disclosed. The polyamide composition can be used as a hardener in epoxy resin formulations.

Process for preparing divinylarene dioxides

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene with (b) at least one oxidant in the presence of (c) at least one transition metal complex catalyst, and (d) optionally, in the presence of a solvent, and (e) optionally in the presence of a catalyst modifier under conditions to form a divinylarene dioxide product.

Reducing impurities in solid epoxy resin

Methods of reducing impurities from a solid epoxy resin in a discrete particulate form. The methods include heating a heterogeneous mixture of the solid epoxy resin, while maintaining the solid epoxy resin in discrete particulate form, and a solution to a predetermined temperature below the solid epoxy resin's softening point temperature. Agitating the heterogeneous mixture at the predetermined temperature for a predetermined time to extract ionic species from the solid epoxy resin into the solution and separating the solid epoxy resin in discrete particulate form from the ionic species in solution. The separated solid epoxy resin having a reduced impurity content relative to the heterogeneous mixture prior to heating.

PROCESS FOR PREPARING DIVINYLARENE DIOXIDES

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene with (b) at least one oxidant in the presence of (c) at least one transition metal complex catalyst, and (d) optionally, in the presence of a solvent, and (e) optionally in the presence of a catalyst modifier under conditions to form a divinylarene dioxide product. 1. A process for preparing a divinylarene dioxide comprising reacting (a) at least one divinylarene with (b) at least one oxidant , excluding hydrogen peroxide , in the presence of (c) at least one transition metal complex catalyst under conditions to form a divinylarene dioxide product.2. The process of claim 1 , wherein the at least one oxidant comprises an oxygen transfer agent; and wherein the oxygen transfer agent is a positive oxidation state halogen compound or a peroxo compound.3. The process of claim 2 , wherein the positive oxidation state halogen compound is selected from the group comprising sodium hypochlorite claim 2 , sodium hypobromide claim 2 , sodium periodate claim 2 , iodosylbenzene claim 2 , iodosyl mesitylene claim 2 , and mixtures thereof; and wherein the peroxo compound is selected from the group comprising hydroperoxides claim 2 , peroxosulfates claim 2 , peroxocarboxylic acids claim 2 , and mixtures thereof; or wherein the peroxo compound is selected from the group comprising m-chloroperbenzoic acid claim 2 , peracetic acid claim 2 , potassium peroxomonosulfate or ammonium or phosphonium peroxomonosulfate salts claim 2 , tert-butylhydroperoxide claim 2 , cumene hydroperoxide and mixtures thereof.4. The process of claim 1 , wherein the at least one divinylarene is divinylbenzene; and wherein the divinylarene dioxide formed is divinylbenzene dioxide.5. The process of claim 1 , wherein the reaction is carried out at a temperature within the range of from about 0° C. to about 100° C.6. The process of claim 1 , wherein the at least one transition metal complex catalyst is made up of at ...

Process for preparing divinylarene dioxides

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene; (b) at least one peroxycarboximidic acid; (c) at least one solvent; and (d) at least one basic compound, under conditions to form a reaction mixture containing a divinylarene dioxide product; and then separating the divinylarene dioxide product from the other reaction mixture components to obtain a purified divinylarene dioxide product.

PROCESS FOR PREPARING DIVINYLARENE DIOXIDES

A process for preparing a divinylarene dioxide including (a) reacting at least one divinylarene with hypochlorous acid to form a chlorohydrin; and (b) treating the chlorohydrin formed in step (a) with at least one base, under conditions to form a divinylarene dioxide product. 1. A process for preparing a divinylarene dioxide comprising(a) reacting at least one divinylarene with hypochlorous acid to form a chlorohydrin, in the presence of a water; and(b) treating the chlorohydrin formed in step (a) with at least one base under conditions to form a divinylarene dioxide product.2. The process of claim 1 , wherein the divinylarene in step (a) comprises divinylbenzene; and wherein the divinylarene dioxide formed comprises divinylbenzene dioxide.3. The process of claim 1 , wherein the hypochlorous acid is pre-formed in a separate step prior to adding the hypochlorous acid to the reaction in step (a).4. The process of claim 1 , wherein the hypochlorous acid is formed situ by the reaction of (i) chlorine and water; or (ii) an alkali metal hypochlorite and an acid.5. The process of claim 1 , wherein the reaction of step (a) includes a hypochlorination solvent.6. The process of claim 1 , wherein the divinylarene comprises divinylbenzene; wherein the hypochlorous acid comprises a pre-formed hypochlorous acid; and wherein the hypochlorination solvent comprises acetone.7. The process of claim 1 , wherein the reaction of step (a) includes at least one surfactant and wherein the base in step (b) comprises an alkali metal hydroxide.8. The process of claim 1 , wherein the treatment of step (b) includes at least one phase transfer agent; or wherein the treatment of step (b) includes at least one dehydrohalogenation solvent.9. The process of claim 1 , wherein the reaction of step (a) is carried out at a temperature within the range of from about 0° C. to about 100° C.; wherein the pH of the pre-formed hypochlorous acid comprises from about 3 to about 7.10. The process of claim 1 , ...

PROCESS FOR PREPARING DINVINYLARENE OXIDES

A process for preparing a divinylarene oxide including (a) reacting (i) at least one divinylarene; (ii) at least one peroxycarboximidic acid; (iii) at least one solvent; and (iv) at least one basic compound, under reaction conditions to form a reaction of fluent containing a divinylarene oxide product; and then (b) evaporating the reaction effluent of step (a) to form a concentrate containing the divinylarene oxide product; and wherein the concentrate separates into two liquid phases. 1. A process for manufacturing at least one divinylarene oxide comprising the steps of:(a) reacting (i) at least one divinylarene with (ii) at least one peroxycarboximidic acid epoxidizing agent in the presence of (iii) at least one solvent and (iv) at least one basic compound, to form a reaction effluent comprising at least one divinylarene oxide and at least one amide;(b) removing at least a portion of at least one lights from the reaction effluent of step (a) forming a biphasic liquid concentrate comprising (b1) an organic phase containing at least a portion of the at least one divinylarene oxide and (b2) an aqueous phase; and(c) separating the organic phase containing the at least one divinylarene oxide from the aqueous phase.2. The process of claim 1 , including step (d) recycling the lights from step (b) back to step (a).3. The process of claim 1 , wherein greater than about 50 percent of the mass of the at least one divinylarene oxide in the reaction effluent of step (a) is present in the organic phase after step (b); and wherein greater than about 50 percent of the mass of the amide in the reaction effluent of step (a) is present in the aqueous phase after step (b).4. The process of claim 1 , including (d) purifying the organic phase containing the at least one divinylarene oxide of step (c) to prepare a purified divinylarene oxide product with greater than about 60 percent purity.5. The process of claim 1 , wherein the removing step (b) is carried out by evaporation; and ...

Aminic hardeners with improved chemical resistance

A hardener composition comprising: a) an epoxy-amine adduct of i) a novolac epoxy resin; and ii) a first amine and b) a modifier wherein the hardener has a viscosity in the range of from 50 to 20,000 mPa·s and wherein a cured epoxy thermoset comprising the hardener exhibits no more than 1% weight loss or gain after immersion in concentrated mineral acid for 7 days at a temperature in the range of from 25° C. to 130° C., is disclosed. The hardener composition can be used with an epoxy resin to form a curable composition.

Polyamide hardeners for epoxy resins

A polyamide composition comprising a reaction product of: a) an excess of a polyfunctional amine; b) a dimer fatty acid; and c) a monomer fatty acid is disclosed. The polyamide composition can be used as a hardener in epoxy resin formulations.

Process for preparing divinlylarene dioxides

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene; and (b) at least one peracid oxidant compound, under conditions to form a divinylarene dioxide product; wherein the peracid oxidant compound is capable of providing an increased yield of a divinylarene dioxide product.

Process for preparing divinylarene oxides

A process for preparing a divinylarene oxide including (a) reacting (i) at least one divinylarene; (ii) at least one peroxycarboximidic acid; (iii) at least one solvent; and (iv) at least one basic compound, under reaction conditions to form a reaction effluent containing a divinylarene oxide product; and then (b) evaporating the reaction effluent of step (a) to form a concentrate containing the divinylarene oxide product; and wherein the concentrate separates into two liquid phases.

process for manufacturing at least one divinilarene oxide

Thermoplastic fibers and fabrics

Reducing impurities in solid epoxy resin

Methods of reducing impurities from a solid epoxy resin in a discrete particulate form. The methods include heating a heterogeneous mixture of the solid epoxy resin, while maintaining the solid epoxy resin in discrete particulate form, and a solution to a predetermined temperature below the solid epoxy resin's softening point temperature. Agitating the heterogeneous mixture at the predetermined temperature for a predetermined time to extract ionic species from the solid epoxy resin into the solution and separating the solid epoxy resin in discrete particulate form from the ionic species in solution. The separated solid epoxy resin having a reduced impurity content relative to the heterogeneous mixture prior to heating.

Methods of making solid epoxy resin

Methods of making and compositions containing solid epoxy resin in discrete particulate form. The methods include condensing at least one polyphenols compound and at least one condensation compound selected from epichlorohydrin. l,3-dichloro-2-propanol, 2,3-dichloro-2-propanol, epoxy novolacs, and homologs thereof in a single phase homogeneous reaction mixture, where the single phase homogeneous reaction mixture includes a water miscible organic solvent, water, a catalyst, and a dispersant.

Process for preparing divinylarene dioxides

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene with (b) at least one oxidant in the presence of (c) at least one transition metal complex catalyst, and (d) optionally, in the presence of a solvent, and (e) optionally in the presence of a catalyst modifier under conditions to form a divinylarene dioxide product.

Thermoplastische fasern und textile flächengebilde

Process for preparing divinylarene dioxides

A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene; (b) at least one peroxycarboximidic acid; (c) at least one solvent; and (d) at least one basic compound, under conditions to form a reaction mixture containing a divinylarene dioxide product; and then separating the divinylarene dioxide product from the other reaction mixture components to obtain a purified divinylarene dioxide product.

Process for preparing divinylarene dioxides