41 results about "Glycol dehydration" patented technology

Non-corroding cleaning compositions for cleaning exterior surfaces of a vehicle are disclosed. The cleaning compositions include an alkyl dimethylamine oxide surfactant with a first chemical structure, an alkyl dimethylamine oxide surfactant with a second chemical structure, a C8-18 alkyl polyethylene glycol sorbitan fatty ester surfactant, a C12-14 secondary alcohol ethoxylate surfactant, a sodium nitrite corrosion inhibitor, and sodium metasilicate are disclosed.

The invention relates to a composite corrosion inhibitor for a butyl rubber chloromethane glycol dehydration and regeneration system. The composite corrosion inhibitor comprises at least two compounds, wherein the compounds are selected from heterocyclic compounds; the heterocyclic compounds are selected from nitrogen heterocyclic compounds and sulfur heterocyclic compounds, preferably the compounds are all selected from the nitrogen heterocyclic compounds, or the nitrogen heterocyclic compounds and the sulfur heterocyclic compounds; the nitrogen heterocyclic compounds are selected from a pyrrole compound, an imidazole compound, a pyrazol compound, a pyridine compound, a pyrazine compound, a miazine compound, a quinoline compound, an isoquinoline compound and a benzotriazole compound; and the sulfur heterocyclic compounds are thiazole compounds. According to the composite corrosion inhibitor, the problem of system corrosion due to accumulation of hydrochloric acid in the chloromethane glycol dehydration system can be effectively solved.

A germ-repellent plastic for use in a gas pathway of a respiratory device contains an anti-biofouling compound, and a basic plastic. The anti-biofouling compound is optionally selected from the groupof a polyol, a polyether polyol, a polyol derivative, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of a polyether, a poly (ethylene glycol) ether, apolysorbate, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of poly (ethylene glycol) sorbitan monolaurate, poly (ethylene glycol) sorbitan monooleate, poly (ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof. The basic plastic is selected from the group of a blend of a low-density polyethylene polymer and an ethyl vinyl acetate copolymer, a blend of a polypropylene polymer and an ethyl vinyl acetate copolymer, a blend of polyolefin elastomer polymers and a polyvinyl chloride polymer. A method for manufacturing such a germ-repellent plastic, a gas pathway component of a respiratory device containing the germ-repellent plastic, and a respiratory device are also described.

The invention relates to a preparation method of modified cation waterborne polyurethane emulsion containing hydrophilic and hydrophobic side long chains and a product thereof. The method comprises the following steps that raw materials are prepared; polyester glycol dehydration pretreatment is carried out; polyester glycol obtained after dehydration pretreatment is subjected to a prepolymerization reaction with an end alkyl polysiloxane linear body, a nonionic chain extender, a functionality chain extender and diisocyanate under catalyzing of a polymerization catalyst so that a prepolymer can be obtained; the prepolymer reacts with a nonionic chain extender and a part diluent to prepare an intermediate; the intermediate reacts with a silane coupling agent, and is emulsified to prepare the modified cation waterborne polyurethane emulsion. The product is a polyester type cation waterborne polyurethane high-polymer material containing hydrophilic and hydrophobic side long chains, wherein polysiloxane is embedded into a main chain of the material, a side chain is grafted with long-chain polyether and long-chain alkyl, and the silane coupling agent is connected into the tail end of the material; the film-forming ability is high, and serving as a film, the emulsion has obvious water-repellent, antifouling and easy dirt-removing abilities, is excellent in compatibility with a cation softening agent, and has an excellent low-temperature soft feature; the product is safe, environmentally friendly and convenient to use.

The invention relates to a composite corrosion inhibitor for a butyl rubber chloromethane glycol dehydration and regeneration system. The composite corrosion inhibitor comprises at least two compounds, wherein the compounds are selected from heterocyclic compounds; the heterocyclic compounds are selected from nitrogen heterocyclic compounds and sulfur heterocyclic compounds, preferably the compounds are all selected from the nitrogen heterocyclic compounds, or the nitrogen heterocyclic compounds and the sulfur heterocyclic compounds; the nitrogen heterocyclic compounds are selected from a pyrrole compound, an imidazole compound, a pyrazol compound, a pyridine compound, a pyrazine compound, a miazine compound, a quinoline compound, an isoquinoline compound and a benzotriazole compound; and the sulfur heterocyclic compounds are thiazole compounds. According to the composite corrosion inhibitor, the problem of system corrosion due to accumulation of hydrochloric acid in the chloromethane glycol dehydration system can be effectively solved.