4results about How to "High positive charge density" patented technology

The invention relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifier for oilfield sewage treatment and a preparation method of the composite water clarifier. The invention relates to a composite water clarifier for oilfield sewage treatment. The composite water clarifier is prepared from the following raw materials: dual modified polyacrylamide, an imidazoline quaternary ammonium salt grafted copolymer, a scale inhibitor, an adsorbent, dodecyl dimethyl betaine, a coagulant aid and deionized water, the double modified polyacrylamide is obtained by performing double modification on polyacrylamide by using 2, 3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer; the imidazoline quaternary ammonium salt grafted copolymer is a grafted copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropanesulfonic acid. The composite water clarifier can be used for treating high-salt and high-oil sewage generated in the middle and later periods of oilfield exploitation, has the advantages of being high in salt resistance, thorough in demulsification and good in flocculation effect, can efficiently remove oil and suspended solids, ensures that effluent reaches the standard, and meets the complex sewage treatment requirements of an oilfield.

The invention discloses a laundry detergent based on a polyoxyethylene block Gemini quaternary ammonium salt bactericide and a preparation method thereof, and belongs to the technical field of wash supplies. The laundry detergent disclosed by the invention is prepared from the following components in percentage by mass: 20 to 25 percent of anionic surfactant, 1 to 5 percent of nonionic surfactant, 3 to 7 percent of polyoxyethylene block Gemini quaternary ammonium salt bactericide, 1 to 4 percent of viscosity modifier, 0.1 to 0.5 percent of stabilizer, 0.2 to 1 percent of enzyme, 0.05 to 0.2 percent of preservative, 0.1 to 2 percent of functional aid, 0.1 to 1.5 percent of essence and the balance of deionized water. A side-chain polyoxyethylene chain segment is embedded into a hydrophilic head group of the quaternary ammonium salt bactericide, and electrostatic attraction with an anionic surfactant is reduced through steric hindrance, so that the quaternary ammonium salt bactericide stably coexists with the anionic surfactant; the technical problem that an existing laundry detergent taking an anionic surfactant as a main active matter is difficult to realize triangular balance of sterilization, decontamination and stability is solved.

The invention discloses a preparation method of efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on botanical linalool, which comprises the following steps: S1, synthesis of chloracetate, S2, preparation of di-tert-amine, and S3, synthesis of the efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on botanical linalool: adopting the di-tert-amine obtained in the S2, the chloracetate obtained in the S1 and a solvent, and stirring uniformly to obtain the efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on botanical linalool. The efficient low-toxicity environment-friendly gemini quaternary ammonium salt based on the plant source linalool is obtained. According to the invention, plant-derived linalool is introduced into a gemini quaternary ammonium salt structure through chemical bonding, nitrogen positive ions on the gemini quaternary ammonium salt are adsorbed on the surfaces of bacteria with negative electricity, and an excellent'adhesion-killing 'efficient synergistic antibacterial effect can be generated by the hydrophobic antibacterial effect of the plant-derived linalool and the nitrogen positive ions and the plant-derived linalool; a new thought and a new technology are provided for high-value resource utilization of natural products.

The application relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifying agent for oilfield sewage treatment and a preparation method thereof. The composite water clarifying agent for oilfield sewage treatment is prepared from the following raw materials: double-modified polyacrylamide, imidazoline quaternary ammonium salt graft copolymer, scale inhibitor, adsorbent, dodecyl dimethyl betaine, coagulant aid and deionized water; the double-modified polyacrylamide is obtained by double modification of 2,3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer on polyacrylamide; and the imidazoline quaternary ammonium salt graft copolymer is a graft copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropane sulfonic acid. The composite water clarifying agent can be used for treating high-salt and high-oil sewage generated in the middle and late stages of oilfield exploitation, has the advantages of strong salt resistance, complete demulsification and good flocculation effect, can efficiently remove oil and suspended solids, ensures that the effluent meets the standards, and meets the complex sewage treatment requirements of oilfields.