8 results about "Poly di methyl siloxane" patented technology

This invention discloses a herbal skin-nourishing cream based on bamboo shoot extract as a solvent and its preparation method. The herbal skin-nourishing cream comprises an oil phase: petrolatum, squalane, dioctyl ether, glyceryl stearate, PEG-100 stearate, hydroxypinazone retinate, natural emulsifier, beeswax, tocopherol, cyclopentamethoxysiloxane, and oil-soluble fragrance; ethylhexylglycerin, niacinamide, and 10% citric acid are used to adjust the pH to 6.0-6.3. The aqueous phase comprises: pentylene glycol, panthenol, capryloyl hydroxamic acid, sodium hyaluronate, xanthan gum, dipotassium glycyrrhizate, sodium chloride, phenoxyethanol, p-hydroxyacetophenone, cellulose gum, and disodium EDTA; the balance is bamboo shoot extract. The average particle size of this invention is 1-5 μm, and the viscosity is 5000-8000 mPa·s. It has undergone heat resistance, cold resistance, centrifugal stability tests, and preservative challenges, demonstrating no stratification or deterioration. Human patch tests have proven its suitability for sensitive skin.

The application provides a kind of organic silicon quaternary ammonium salt catalyst for strengthening CO2 mineralization sequestration and its preparation method and application, belongs to catalyst preparation technical field.The preparation method of the organic silicon quaternary ammonium salt catalyst, including steps: hydrogen-containing polydimethylsiloxane and allyl glycidyl ether are added to organic solvent, under the catalysis of platinum catalyst, carry out silicon hydrogen addition reaction, obtain epoxy group end-capped polysiloxane intermediate;The obtained epoxy group end-capped polysiloxane intermediate is added to alcohol solvent, add binary polyether amine to carry out ammonolysis ring-opening reaction, obtain polyether amine end-capped tertiary amine intermediate;The obtained polyether amine end-capped tertiary amine intermediate is added to polar solvent, add quaternization reagent to carry out reaction, obtain the organic silicon quaternary ammonium salt catalyst for strengthening CO2 mineralization sequestration.The catalyst of the application can accelerate the dissolution of calcium silicate and the mass transfer absorption of CO2, inhibit the formation of SiO2 passivation layer, greatly improve the reaction efficiency and CO2 conversion rate.

The application discloses a kind of concrete freeze-thaw resistance and carbonation resistance protective layer of sandwich structure and preparation method thereof.The protective layer includes three functional layers: surface layer is silane functionalized fluorine carbon modified poly (dimethylsiloxane) urea resin layer, middle layer is silane functionalized montmorillonite modified poly (dimethylsiloxane) urea resin layer, bottom layer is polyol modified poly (dimethylsiloxane) urea resin layer.The preparation method of the application includes the synthesis of poly (dimethylsiloxane) urea resin, the preparation of functionalized additive, and three-layer protective layer is coated and cured layer by layer.The protective layer structure significantly improves the freeze-thaw resistance and carbonation resistance of concrete, effectively slows down the degradation of concrete mechanical properties, and the application provides a new technical solution for improving the durability of concrete structure, and has wide application prospect.

The application belongs to the technical field of silica gel, and particularly relates to an antibacterial silica gel composition, a preparation method thereof and a pillow. A curing reaction is carried out through a Michael addition mechanism without a catalyst, thereby avoiding the problem that an antibacterial agent containing an N element poisons a platinum gold catalyst of addition type silica gel. An addition type antibacterial silica gel is prepared through a Michael addition reaction of an amino-terminated polyimidazole salt antibacterial agent, poly(dimethylsiloxane)-(methyl aminopropyl siloxane) and acryloyl-terminated poly(dimethylsiloxane) without a catalyst, using acryloyl-terminated poly(dimethylsiloxane) to replace a hydrogen-containing silane as a crosslinking agent, and using the amino-terminated polyimidazole salt antibacterial agent and the poly(dimethylsiloxane)-(methyl aminopropyl siloxane). Compared with condensation type antibacterial silica gel, the addition type antibacterial silica gel has high modulus, high elasticity, high tear strength and high antibacterial effect.

The application provides an addition type liquid silicone primer and belongs to the technical field of primers. According to the weight percentage, the primer comprises the following components: polydimethylsiloxane containing a vinyl group: 20-30%; white carbon black: 20-30%; methyl-terminated polymethylhydrogen siloxane: 2-5%; inhibitor: 0.01-0.04%; silane coupling agent: 1-5%; zirconate coupling agent: 1-3%; catalyst: 0.3-0.5%; petroleum ether: 30-60%. The zirconate coupling agent is used to promote the hydrolysis of the alkoxy group of the silane coupling agent and to promote the ring opening of the epoxy group, so that the crosslinking degree of the primer on the surface of the substrate is increased, and thus greater adhesion is obtained.

This application discloses a novel organosilicon-polyphosphazene flame retardant with high thermal stability, its preparation method, and its application. The preparation method involves first reacting hexachlorocyclotriphosphazene with p-hydroxybenzaldehyde under catalysis to obtain hexa-p-aldehyde-phenoxycyclotriphosphazene, and then reacting it with poly(dimethylsiloxane), bis(3-aminopropyl)-terminated poly(dimethylsiloxane), under heating conditions to obtain the organosilicon-polyphosphazene flame retardant. This application introduces a siloxane structure into the flame-retardant hexa-p-aldehyde-phenoxycyclotriphosphazene, resulting in a flame retardant with good thermal stability, high flame retardant efficiency, and ease of addition. Furthermore, the preparation method is simple, the conditions are easy to control, and the reproducibility is good. The obtained flame retardant can be applied to epoxy resins.

The application relates to the field of hair dyeing products, and more particularly to a low-irritation essential oil hair dye and a preparation method thereof. The low-irritation essential oil hair dye comprises a No. 1 agent and a No. 2 agent. The No. 1 agent comprises a moisturizing agent, a hair coloring agent, an antioxidant, a chelating agent, a solvent A, a thickening agent A, an emulsifying agent A and a hair conditioner. The No. 1 agent further comprises a pH regulator A, dimethicone, a fragrance A, a polyquaternary ammonium salt-7, a polyquaternary ammonium salt-10, a butyrospermum parkii (shea) butter, a camellia sinensis flower extract, a zingiber officinale (ginger) root extract and a preservative. The No. 2 agent comprises a solvent B, a cetylstearyltrimethylammonium chloride, a sodium stannate, a pH regulator B, a thickening agent B, an emulsifying agent B and a mineral oil. The No. 2 agent further comprises a chelating agent C and an oxidizing agent. The hair dye provided by the application can reduce irritation and relieve the degree of hair roughness after dyeing under the condition of ensuring the hair dyeing effect, and has many advantages.