17 results about "Halohydrin" patented technology

An absorbent retail paper product made up of cellulose fibers, and having a 1,3-dichloro-2-propanol concentration of non-detected amounts to 50 ppb as measured using the AOAC Official Method 2000.0150, a 3-monochloro-1,2 propanediol concentration of non-detected amounts to 1000 ppb as measured using the AOAC Official Method 2000.0150, a polyaminoamide-epihalohydrin concentration of non-detected amounts to 0.09% as measured by an “Adipate test”, and a cross direction wet strength of 80 to 200 n / m, wherein all of the cellulose fibers contained in the absorbent paper product are non-synthetic, cellulose fibers and the absorbent paper product is substantially free of formaldehyde.

A creping adhesive composition includes an adhesive polymer chosen from a polyacrylamide, a specific polyamine, and combinations thereof that is present in an amount of from about 1 to about 45 wt% actives, based on a total weight of the composition; a film modifier including a polyvinylamine that is present in an amount of from about 0.1 to about 40 wt% actives, based on a total weight of the composition; and a plasticizer including a compound having two or more -OH groups that is present in an amount of from about 0.1 to about 40 wt% actives, based on a total weight of the composition; wherein the composition is free of polyamidoamine-epihalohydrin (PAE) and polyethyleneimine (PEI).

The invention relates to a method for preparing 1, 4-butanediol from ethylene glycol through 2-halohydrin. The method comprises the following steps: by taking ethylene glycol as a raw material, firstly, carrying out acid catalysis halogenation to obtain 2-halohydrin and 2-halohydrin acetate; the mixture of the 2-halohydrin and the 2-halohydrin acetate is converted into the 1, 4-butanediol and the ester thereof through electrocatalytic dehalogenation coupling. In the halogenation reaction, strong acid is used as a catalyst, heating reaction is carried out in an inert atmosphere, and the total selectivity of the obtained 2-halohydrin and 2-halohydrin acetate can reach 89%. The electrocatalytic reaction process of the reacted 2-halohydrin and 2-halohydrin acetate is as follows: adding 2-iodoethanol, 2-halohydrin acetate, a metal complex and alkali into an electrolytic bath containing a solvent, wherein a Pt electrode and an oxide electrode are cathodes; after the atmosphere of the electrolytic cell is replaced with inert gas, sealing is carried out, electrolysis is carried out at normal temperature, dehalogenation coupling products of 2-iodoethanol and 2-haloethanol acetate, namely 1, 4-butanediol and 1, 4-butanediol diacetate are obtained, and the selectivity can reach 91%. The total selectivity of 1, 4-butanediol in the two-step method can reach 81%.

A method for preparing an adhesive resin for use in a coating composition for a crepe paper manufacturing process that includes the steps of reacting a polycarboxylic acid or a derivative of a polycarboxylic acid with a polyamine to form a polyamidoamine intermediate; reacting a polyetheramine with an epihalohydrin to form a polyetheramine-epihalohydrin intermediate and reacting the polyamidoamine intermediate with the polyetheramine-epihalohydrin intermediate to form a polyamidoamine polyetheramine-epihalohydrin resin.

Provided herein is a method of preparing a metal ion scavenger comprising adding an effective amount of a piperazine derivative to a polyamine and epihalohydrin condensation reaction. Further provided herein is a method of treating an aqueous stream and a non-aqueous stream, the method comprising adding a metal ion scavenger to the aqueous stream and the non-aqueous stream, the metal ion scavenger prepared by adding an effective amount of a piperazine derivative to a polyamine and epihalohydrin condensation reaction.

Electrosynthesis of oxirane can include contacting a halide electrolyte with an anode and cathode respectively located in anodic and cathodic compartments; supplying olefin reactants into the electrolyte in the anodic compartment, such that the anode generates ethylene chlorohydrin; withdrawing a loaded anodic solution comprising ethylene halohydrin from the anodic compartment, and a loaded cathodic solution comprising OH− ions from the cathodic compartment; and mixing the loaded anodic solution with the loaded cathodic solution under conditions to react ethylene halohydrin with OH— to produce oxirane. The electrocatalyst can include iridium oxide on a titanium substrate, with the iridium oxide provided as nanoparticles on a titanium mesh, and the electrolyte can be aqueous KCl. The electrocatalyst can define an extended heterogenous:homogenous interface with halide ions acting as a reservoir for positive charges, thereby storing and redistributing positive charges to promote selective generation of ethylene halohydrins.

The present invention relates to catalyst composition for cyclic carbonate production from CO2 and olefins using halohydrin agent as the co-reactant under mild conditions, which can effectively catalyze the cyclic carbonate synthesis and provides good selectivity to cyclic carbonate, wherein said catalyst composition comprising:a) the metal complex as shown in structure (I):wherein,M represents transition metal atom;R1, R2, and R3 represent independent group selected from hydrogen atom, halogen atom, alkyl group, alkenyl group, alkynyl group, alkoxy group, amine group, phenyl group, benzyl group, cyclic hydrocarbon group comprising hetero atom, perfluoroalkyl group, or nitro group;R4 represents group selected from alkylene group, cycloalkylene group, or phenylene group;X represents group selected from halogen atom, acetate group, or triflate group;b) the halohydrin agent in at least one solvent; andc) at least one base.

Embodiments of the present disclosure generally relate to processes for forming epoxy resin compositions and processes for separating substrates from complex mixtures. In one embodiment, a process for preparing an epoxy resin composition is provided and includes: reacting a mixture comprising a substrate, an epihalohydrin, and a catalyst to form a first composition comprising a halohydrin reaction product; introducing an alkaline agent with the first composition to form a second composition comprising an epoxy resin product; introducing a liquid epoxy resin together with the second composition to form a resin mixture; and removing unreacted epihalohydrin from the resin mixture to form the epoxy resin composition. In another embodiment, a process for separating a substrate from a substrate source is provided and includes introducing an epihalohydrin with the substrate source comprising the substrate, the substrate comprising at least one hydroxyl group, and separating the epihalohydrin and the substrate from the substrate source.

Provided is a process for the preparation of a compound with at least one five-membered cyclic monothiocarbonate group. A compound C1 with at least one halohydrin group is used as starting material. Compound C1 is reacted with phosgene or an alkyl chloroformate to give an adduct C2. The adduct C2 is reacted with a compound that includes anionic sulfur to obtain the compound with at least one five-membered cyclic monothiocarbonate group.

A method for making a monomer includes reacting an alkanol-substituted phenol with epihalohydrin in the presence of a phase transfer catalyst at a temperature of 50° C. or lower to produce a first intermediate product. The method further includes removing excess epihalohydrin, and after removing excess epihalohydrin, contacting the first intermediate product with a base to produce a second intermediate product, and forming an oxirane-functional vinyl monomer from the second intermediate product. The monomer includes an oxirane group, an unsaturated vinyl bond, and optionally an aromatic spacer between the two functional groups.

The present invention relates to an intermediate composition in the form of an aqueous solution for preparing polyamidoamine epihalohydrin resins having a dry solids content of 30 wt% to 65 wt%. The intermediate composition comprises a modulating acid and from 30 wt% to 60 wt%, calculated based on the total weight of the intermediate composition, of a polyamidoamine derivative having a covalently bound halohydrin group and a covalently bound azetidinium group wherein the intermediate composition contains a derivative bound halogen in an amount of < = 90 g / kg, calculated on dry solids.

There is provided polyamidoamine-epihalohydrin (PAE) polymer substituted with an acrylic acid ester and / or an acrylic acid amide, wherein an oxygen atom of the acrylic acid ester or a nitrogen atom of the acrylic acid amide contains a substituent having from 2 to 5 carbon atoms. Additionally, is provided a method for producing the PAE polymer.

A creping adhesive composition includes an adhesive polymer chosen from a polyacrylamide, a specific polyamine, and combinations thereof that is present in an amount of from about 1 to about 45 wt % actives, based on a total weight of the composition; a film modifier including a polyvinylamine that is present in an amount of from about 0.1 to about 40 wt % actives, based on a total weight of the composition; and a plasticizer including a compound having two or more —OH groups that is present in an amount of from about 0.1 to about 40 wt % actives, based on a total weight of the composition; wherein the composition is free of polyamidoamine-epihalohydrin (PAE) and polyethyleneimine (PEI).

An absorbent retail paper product made up of cellulose fibers, and having a 1,3-dichloro-2-propanol concentration of non-detected amounts to 50 ppb as measured using the ACOC Official Method 2000.0150, a 3-monochloro-1,2 propanediol concentration of non-detected amounts to 1000 ppb as measured using the ACOC Official Method 2000.0150, a polyaminoamide-epihalohydrin concentration of non-detected amounts to 0.09% as measured by an “Adipate test”, and a cross direction wet strength of 80 to 200 n / m, wherein all of the cellulose fibers contained in the absorbent paper product are non-synthetic, cellulose fibers and the absorbent paper product is substantially free of formaldehyde.

Embodiments of the present disclosure generally relate to processes for forming epoxy resin compositions and processes for separating substrates from complex mixtures. In an embodiment, a process for making an epoxy resin composition is provided and includes: reacting a mixture comprising a substrate, an epihalohydrin, and a catalyst to form a first composition comprising a halohydrin reaction product; introducing an alkaline reagent with the first composition to form a second composition comprising an epoxy resin product; introducing a liquid epoxy resin with the second composition to form a resin mixture; and removing unreacted epihalohydrin from the resin mixture to form the epoxy resin composition. In another embodiment, a process for separating a substrate from a substrate source is provided and includes: introducing an epihalohydrin with the substrate source comprising the substrate, the substrate comprising at least one hydroxyl group, and separating the epihalohydrin and the substrate from the substrate source.

The present invention relates to an intermediate composition in form of an aqueous solution having a pH value ≤6 for manufacture of polyamidoamine epihalohydrin resin. The intermediate composition comprises a polyamidoamine derivative having an average molecular weight of <150 000 g / mol with covalently bound pendant halohydrin groups, wherein the polyamidoamine derivative comprises 5-95 mol-%, preferably 7-90 mol-% of pendant halohydrin groups. The intermediate composition further comprises a total amount of 1,3-dihalo-2-propanol and 3-halopropyleneglycol less than 3500 ppm, calculated from the total dry weight of the intermediate composition.

Embodiments of the present disclosure generally relate to processes for forming epoxy resin compositions and processes for separating substrates from complex mixtures. In one embodiment, a process for preparing an epoxy resin composition is provided and includes: reacting a mixture comprising a substrate, an epihalohydrin, and a catalyst to form a first composition comprising a halohydrin reaction product; introducing an alkaline agent with the first composition to form a second composition comprising an epoxy resin product; introducing a liquid epoxy resin together with the second composition to form a resin mixture; and removing unreacted epihalohydrin from the resin mixture to form the epoxy resin composition. In another embodiment, a process for separating a substrate from a substrate source is provided and includes introducing an epihalohydrin with the substrate source comprising the substrate, the substrate comprising at least one hydroxyl group, and separating the epihalohydrin and the substrate from the substrate source.