59 results about "Poly di methyl siloxane" patented technology

The invention discloses a phenolphthalein-based polyaryletherketone polymer and a preparation method thereof, and the phenolphthalein-based polyaryletherketone polymer is prepared from the following raw materials: 240 to 370 parts of phenolphthalein monomer, 45 to 150 parts of modified phenolphthalein, 140 to 220 parts of 2, 6-dichlorobenzonitrile and 3 to 12 parts of alkyl halide. The modified phenolphthalein is prepared from phenolphthalein and a modifier; the modifying agent is selected from at least one of 3-amino propyl trimethoxy silane, 3-amino propyl triethoxy silane, bis (aminopropyl) polydimethylsiloxane, and aminopropyl terminated polydimethylsiloxane. By introducing a siloxane side chain and a cyano side bond and using long-chain aliphatic hydrocarbon for end capping, the bonding capacity of the polymer and other materials is improved, and meanwhile, the high temperature resistance and toughness of the polymer are kept.

The invention relates to the technical field of cosmetics, and particularly discloses anti-wrinkle cream containing sequoia stem fermentation products and a preparation method of the anti-wrinkle cream. The wrinkle removing cream containing the sequoia stem fermentation product is prepared from the following raw materials in percentage by mass: a material A: glycerol, butanediol, p-hydroxyacetophenone YS028, an ammonium acryloyldimethyl taurate / VP copolymer, p-hydroxyacetophenone YS008 and the balance of water; the material B is prepared from cetostearyl alcohol, an emulsifying agent MONTANOV202, butyrospermum parkii butter, isopropyl myristate, C10-18 fatty acid triglyceride, polydimethylsiloxane, ethylhexyl palmitate and XIAMETERPMX-0345Z Fluid; the material C is prepared from a material D and a material E; the material C is prepared from a sequoia stem fermentation product, Naturalpenet 2020 and SEPIGEL305; the material D is prepared from YONOME SPE II, Alps mountain leucas, ULA-L1004 coated ceramide, anti-wrinkle base peptide, super-oinmetidyl-D2, Chinese prescription hexyl A powder, XYREPIOR, annoine TM, essence and methyl dihydrojasmonate; the material D is prepared from YONOME SPE II, Alps mountain leucas, ULA-L1004 coated ceramide, anti-wrinkle base peptide, super-oinmetidyl-D2, Chinese prescription hexyl A powder, XYREPIOR, annoine TM In addition, the preparation method has the advantage of improving the wrinkle removing effect of the wrinkle removing cream.

The invention belongs to the technical field of polyimide materials, and particularly relates to an interpenetrating network type polyimide material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out first polycondensation on pyromellitic dianhydride and 4, 4 '-diaminodiphenyl ether to obtain first polyamide acid; performing first cross-linking on the first polyamide acid under the action of a first cross-linking agent to obtain a first cross-linked network; carrying out second polycondensation on the amino-terminated poly (dimethyl siloxane) and 4, 4 '-(hexafluoroisopropenyl) diphthalic anhydride to obtain second polyamide acid; mixing the first polyamic acid and the second polyamic acid for pre-reaction, and then adding a second cross-linking agent for second cross-linking to obtain a precursor solution; and carrying out imidization on the precursor solution to obtain the interpenetrating network type polyimide material. The interpenetrating network type polyimide material obtained by the preparation method provided by the invention realizes synergistic enhancement of strength and toughness.

The present invention belongs to the technical field of cosmetics, and discloses a shell material for encapsulating water-soluble active ingredients, an elastomer composition including the shell material, and a dispersion system including the elastomer composition. An aqueous phase is encapsulated within the shell material, and the shell material is composed of a polydimethylsiloxane / vinyltrimethoxysiloxysilicate cross-linked polymer and octyl poly(dimethylsiloxane) ethoxylated glucoside. Based on this special shell material, it has both lipophilic siloxane groups, methyl groups, octyl groups, and hydrophilic glucoside groups, which can very well connect water-soluble active ingredients and the shell material polydimethylsiloxane / vinyltrimethoxysiloxysilicate cross-linked polymer, enhancing the stability and dispersibility of water-soluble active ingredients. At the same time, the uses of the dispersion system and skin care products are also provided.

The invention discloses snowflake cream with pearly luster and a preparation process of the snowflake cream. The snowflake cream comprises the following raw material components: a phase A: water; butanediol; glycerol; methyl glucitol polyether-20; a polyacrylate cross-linked polymer-6; sodium hyaluronate; potassium hydroxide (90%); 4-hydroxyacetophenone; xanthan gum; phase B: caprylic / capric triglyceride; cetostearyl alcohol; stearic acid; a polydimethylsiloxane; squalane; simmondsia chinensis seed oil; mineral oil; and polyethylene glycol (PEG)-100 stearate. Glyceryl stearate; tocopheryl acetate; isononyl isononanoate; a phase C: 1, 2-hexanediol; carnosine; a centella asiatica extract; collagen; the snowflake cream has the advantages of uniform pearly luster texture and the advantages of traditional snowflake cream.

The invention relates to the field of heat-conducting silicone grease, and discloses low-thermal-resistance heat-conducting silicone grease and a preparation method thereof. The heat-conducting silicone grease with low thermal resistance is prepared from the following raw materials in parts by weight: 100 to 120 parts of silicone oil polymer, 135 to 150 parts of heat-conducting filler, 4 to 6.5 parts of methylcyclosiloxane, 2 to 4 parts of alkyl alkoxy silane and 0.2 to 0.4 part of lubricating additive, the silicone oil polymer is prepared from trimethyl trivinyl cyclotrisiloxane, vinyl terminated polydiphenyl siloxane-polymethylvinyl siloxane block polydimethylsiloxane, trimethylolpropane diallyl ether, hydrogen-containing silicone oil and a platinum catalyst through a reaction. The heat-conducting silicone grease prepared by the invention has relatively good thixotropy, heat conductivity and low-heat-resistance stability, and silicone oil is not easy to separate out in a long-term cold and hot cycle use process.

This invention discloses an anionic hydroxyl silicone oil emulsion and its preparation method, relating to the field of polysiloxane emulsion technology, and belonging to patent classification number C08G77 / 04. The preparation method is as follows: Triethanolamine dodecylbenzenesulfonate salt, tridecyl alcohol polyether, and deionized water are mixed and dissolved, heated, and polydimethylsiloxane alcohol is added under high-speed shearing for homogenization. Water is added and the reaction is maintained at a constant temperature to obtain a basic emulsion. γ-(methacryloyloxy)propyltrimethoxysilane is added dropwise to react and obtain an interface-reinforced emulsion. Acrylamide, N-hydroxymethylacrylamide, etc., are pre-emulsified and then added to the interface-reinforced emulsion with ammonium persulfate under nitrogen protection. Polymerization forms a cross-linked polymer shell. After cooling, tert-butylhydroquinone and disodium ethylenediaminetetraacetate are added to obtain an antioxidant emulsion. Phenoxyethanol and octyl glycol are added to obtain the final emulsion. This method significantly improves the thermal stability of the emulsion through the synergistic effects of composite emulsification, interface reinforcement, shell protection, and antioxidant properties, making it suitable for high-temperature environments.

The application belongs to the field of polyurethane elastomers, and discloses a self-healing polyurethane elastomer in a liquid environment, and a preparation method and application thereof. The main chain structure of the self-healing polyurethane elastomer is polyurethane-urea with polydimethylsiloxane (PDMS) as a soft segment, diisocyanate and 3,3'-dithiodipropionyl hydrazine (DPH) as hard segments. The hydrophobic PDMS soft segment in the main chain not only provides high elasticity and realizes efficient closure, but also prevents water molecules from penetrating into the polymer network, thereby accelerating the synergistic self-healing process of the dynamic covalent bond (-S-S-) and high-density hydrogen bonds in the hard segment. The self-healing polyurethane elastomer has excellent mechanical properties, biocompatibility and self-repairing ability in a wet environment in vivo, and is particularly suitable for the rapid closure and functional recovery of frequently punctured or damaged parts in biological medical devices such as hemodialysis, artificial blood vessels, heart stents and heart valves.

This invention discloses a fluorine-free waterproofing agent and its preparation method, relating to the field of waterproofing agent technology. The preparation method involves mixing nano-silica with acrylate-terminated polydimethylsiloxane, octadecyl methacrylate, and methacryloxypropyltrimethoxysilane, followed by dropwise addition of azobisisobutyronitrile (AIBN) to obtain an organic-inorganic hybrid prepolymer acetone solution. Polycaprolactone diol, isophorone diisocyanate, and dibutyltin dilaurate react to prepare a polyurethane prepolymer. The mixture is then cooled and reacted with dimethylolpropionic acid and acetone, followed by further cooling, neutralization, and emulsification to obtain an aqueous polyurethane dispersion. This dispersion is then emulsified with the hybrid prepolymer, reacted with methyl methacrylate and hydroxyethyl acrylate, and finally reacted with glycerol polyglycidyl ether to obtain a composite emulsion. An antifoaming agent, leveling agent, and bactericide are added to the composite emulsion to obtain the fluorine-free waterproofing agent. The waterproofing agent of this invention provides durable waterproofing performance after being applied to fabrics.

The invention belongs to the technical field of cosmetics, and discloses a vitamin E emulsion and a preparation method thereof, the vitamin E emulsion comprises the following components by mass: 0.5-2 wt% of vitamin E and derivatives thereof, 10-20 wt% of a stabilizer, 10-20 wt% of a humectant, 3-6 wt% of an emulsifier, 0.3-1 wt% of a thickener, 0.5-1 wt% of a preservative, and the balance of water; wherein the vitamin E and the derivative thereof comprise at least one of vitamin E, tocopheryl acetate, tocopheryl linoleate, tocopheryl nicotinate and tocopheryl phosphate; the stabilizer comprises at least one of petrolatum, polydimethylsiloxane, hydrogenated polyisobutene, caprylic / capric triglyceride and butyrospermum parkii butter. Through the components, the antioxidant activity of vitamin E in the storage and skin retention process of the vitamin E milk can be effectively maintained.

The invention relates to the technical field of cosmetics, and discloses an oil wax composition of a high-water-holding complex stably-loaded water active matter and a preparation method, the oil wax composition of the high-water-holding complex stably-loaded water active matter comprises a high-water-holding complex, an oil wax phase and a water-based active matter phase, the high water holding complex comprises polyglycerol-2 dipolyhydroxystearate, polyglycerol-10 eicosanoic acid ester / tetradecanedioic acid ester, polyglycerol-3 rice bran acid ester, 1%-6% of polyglycerol-6 polyricinoleate, bis-behenyl alcohol / isostearyl alcohol / phytosterol dimer linoleate, dipentaerythritol hexahydroxy stearate / hexastearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate, polyglyceryl tristearate and polyglyceryl tristearate. According to the lip care composition, a water-based active matter phase can be stably borne in a high-load mode, water-based activity is effectively conveyed to the lip surface in the using process, and therefore the moisturizing, repairing and functional care effects of the lip are remarkably improved.

The invention discloses a cosmetic composition and application thereof in preparation of a hormone regulator. The cosmetic composition is prepared from the following components in percentage by mass: 8.4%-11.6% of a hormone regulator, 9%-11% of a humectant, 13.95%-19.25% of an emollient, 0.2%-0.4% of an inflammation inhibitor, 1.0%-1.5% of an emulsifier, 2%-3% of a skin conditioner and the balance of water, the hormone regulator is prepared from the following components: a radix puerariae extract compound, a dioscorea villosa root extract compound, a wild soybean seed extract compound, a cimicifuga racemosa root extract, a red clover extract compound and an emollient, the moisturizing cream is prepared from a moisturizing cream compound, an emollient compound, octyl polymethylsiloxane, isononyl isononanoate, dicapryl carbonate, polydimethylsiloxane, squalane, tocopheryl acetate and bergamot fruit oil. The cosmetic composition provided by the invention is used for regulating the endocrine (hormone) balance of a human body, and organically combines the concepts of life cultivation and health preservation and skin beautifying, so that the disordered endocrine recovers balance, and the body function returns to a young state.

The invention relates to the field of daily chemical products, and particularly discloses a bartana oil hair heat protection hair conditioner and a preparation method thereof, the bartana oil hair heat protection hair conditioner comprises the following components: a group A: water, cetrimonium chloride and hydroxyethyl cellulose; the group B is prepared from the following raw materials: PEG-50 shea butter, a papain oil nutrient solution, a siloxane emulsion, glyceryl stearate, PEG-20 stearate, p-hydroxyacetophenone, PEG-50 stearate, polydimethylsiloxane alcohol and PEG-100 stearate; group C: essence and phenoxyethanol; group D: panthenol, hydrolyzed keratin, vitamin complex, tridecanol polyether-12, ethylhexylglycerin, citric acid and natural carotene; the added siloxane emulsion and the bartana oil nutrient solution form a double-membrane structure, the double-membrane structure can penetrate into hair cuticle gaps to fill up damaged areas, a hydrophilic-hydrophobic composite membrane is constructed on the surface of hair, the heat conduction efficiency is reduced, the heat insulation threshold value of the hair conditioner is increased, and the prepared hair conditioner has the three-effect-in-one deep repairing and nourishing effects of heat insulation, repairing and scalp protection.

The invention discloses a method for low-temperature rapid catalytic degradation of silicone rubber, and belongs to the technical field of resource utilization of waste silicone rubber. According to the method, trifluoromethanesulfonic acid (HOTf) and metal halide zinc chloride are adopted to construct a concerted catalysis system, so that breakage and cyclization of a siloxane main chain can be realized within 10-20 minutes at the low temperature of 25 DEG C, and a siloxane product with octamethylcyclotetrasiloxane (D4) and cyclopentasiloxane (D5) as main components is generated. Compared with an existing Lewis acid system, the synergistic system still shows remarkably improved degradation rate and higher cyclization selectivity under a low-temperature condition. The method provided by the invention is suitable for linear, cross-linked and filler-containing waste silicone rubber, the process is mild and safe, the operation is convenient, and the obtained siloxane product can be directly used for regeneration and cyclic utilization of an organic silicon material.

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 invention belongs to the technical field of modified shield soil recycled coarse aggregates, and particularly relates to a preparation method and application of a modified shield soil recycled coarse aggregate, and the preparation method comprises the following steps: 1) preparing a modification liquid from poly (dimethyl siloxane), bis (3-aminopropyl) terminated, linear novolac epoxy resin, a nano filler and an organic solvent; and 2) dipping the shield soil recycled coarse aggregate in the modification liquid, stirring under an ultrasonic condition, taking out, and drying to obtain the modified shield soil recycled coarse aggregate. The poly (dimethyl siloxane), the bis (3-aminopropyl) end cap, the linear novolac epoxy resin and the nano-filler fully permeate into pores and gaps of the shield soil recycled coarse aggregate, and the nano-filler physically blocks the internal pores, repairs micro-cracks and reduces the water absorption rate; the siloxane chain segment of the amino-terminated silicon oil directionally forms a hydrophobic membrane, and the amino-terminated group and the linear novolac epoxy resin are cross-linked and cured to block moisture invasion; and the linear novolac epoxy resin firmly bonds the fragile part, so that the mechanical property and durability are improved.

The invention provides functional end hydrogen-containing silicone oil with high Si-H activity and a production process of the functional end hydrogen-containing silicone oil. The hydrogen-terminated silicone oil is prepared from the following components: 78 to 85 percent of octamethylcyclotetrasiloxane, 0.15 to 0.45 percent of a metal organic framework loaded diacid catalyst, 4 to 8 percent of an amino functionalized hydrogen-containing end-capping reagent, 2.5 to 6 percent of a polyether-siloxane block regulator, 1 to 3 percent of hexamethyldisiloxane, 1.5 to 4 percent of absolute ethyl alcohol and 0.3 to 0.8 percent of a weakly alkaline adsorbent. According to the invention, the hydrogen-terminated silicone oil is based on octamethylcyclotetrasiloxane, has a stable polydimethylsiloxane main chain skeleton, has a controllable molecular chain length, contains amino groups which can react with carboxyl and epoxy groups, and has wide functions and application scenes; the molecular weight distribution is easy to regulate and control, the polyether-containing chain segment has good hydrophilicity, and the block structure improves the high and low temperature resistance.

The invention discloses activating essence cream containing centella asiatica, ginseng and polygonum cuspidatum extracts and a preparation method of the activating essence cream. Essence cream comprises water, mineral oil, glycerin, ethylhexyl isopalmitate, hydrogenated polydecene, butanol polyether-2, butanediol, caprylic / capric triglyceride, cetostearyl alcohol, stearic acid, glyceryl stearate, stearate, polydimethylsiloxane, cetostearyl alcohol polyether-25, polysorbate-80, methylparaben, allantoin, carbomer, triethanolamine, essence and bis (hydroxymethyl). Imidazolidinyl urea and trace components. The activating essence cream disclosed by the invention contains various active ingredients, such as plant extracts, with the effects of repairing, resisting oxidation, moisturizing, tightening and the like. The components can go deep into the bottom layer of the skin, promote metabolism of cells, accelerate the self-repairing ability of the skin, improve the moisturizing ability and elasticity of the skin, reduce the generation of fine wrinkles and wrinkles, and make the skin smoother, tighter and more elastic.

The invention 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, so that the problem of poisoning of an addition type silica gel platinum catalyst caused by an antibacterial agent containing an N element is avoided. The preparation method comprises the following steps: synthesizing an amino-terminated polyimidazolium salt antibacterial agent, poly (dimethyl siloxane)-(methyl aminopropyl siloxane) and acryloyl-terminated poly (dimethyl siloxane), and using the acryloyl-terminated poly (dimethyl siloxane) to replace hydrogen-containing silane as a cross-linking agent; and carrying out a catalyst-free Michael addition reaction with an amino-terminated polyimidazolium salt antibacterial agent and poly (dimethyl siloxane)-(methyl aminopropyl siloxane) to prepare the addition type antibacterial silica gel. Compared with condensed type antibacterial silica gel, the addition type antibacterial silica gel has the advantages of high modulus, high elasticity, high tear strength and high antibacterial effect.

Methodology for sampling and determining the concentration of total volatile methyl siloxanes in gases, applicable to any gaseous phase likely to contain volatile molecules with silicon-oxygen and silicon-carbon bonds resulting from the decomposition of polydimethylsiloxane. The methodology is characterized by a first sampling stage where a gas flow is passed through a sealed sampling system; a second analytical stage carried out in the same sampling system involving a gas / liquid mass transfer process with a chemical reaction where volatile methyl siloxanes are absorbed in the liquid phase and converted to silicon dioxide (SiO2); and a third stage where specific chemical reactions for SiO2 are carried out, producing a color whose intensity is proportional to its concentration in the liquid phase.The concentration of SiO2 is subsequently quantified by spectrophotometry and, through material balances, the resulting concentration of SiO2 can be expressed in terms of milligrams of silicon (Si) per cubic meter of gas, or in terms of milligrams of total volatile methyl siloxanes per cubic meter of gas.

An oil-in-water type emulsion composition which does not exhibit an unnatural opaque feeling when applied to the skin, imparts brightness to the skin, and exhibits good stability, the oil-in-water type emulsion composition comprising (A) (A1) a hydrophobic powder having a refractive index of 1.7 or more, or (A2) a powder obtained by hydrophobizing a hydrophilic powder having a refractive index of 1.7 or more; (B) a cellulose derivative having a hydroxyalkyl group; (C) a polyether-modified silicone of formula (I); (D) a powder-containing oil component; (E) The composition does not contain a powdered oil component, contains the component (A) in an amount of 0.4% by mass or more with respect to the total amount of the composition, and contains the component (B) in an amount of 0.13% by mass or more with respect to the total amount of the composition, and the component (D) contains (i) polydimethylsiloxane, methylphenylpolysiloxane, diphenylsiloxyphenyltrimethylsiloxane, and octyl polymethylsiloxane. (ii) a cyclic silicone; and (iii) an oil component having a molecular weight of 400 or less.

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 present invention discloses a fireproof and high-temperature resistant resin coating and its preparation method and application, which belong to the field of surface coating technology. The fireproof and high-temperature resistant resin coating of the present invention includes epoxy resin, thermosetting phenolic resin, yttria-stabilized zirconia, polydimethylsiloxane, 3-aminopropyltrimethoxysilane, ammonium polyphosphate, ethylenediamine and methylhexahydrophthalic anhydride. The present invention improves the high toughness, high adhesion and thermal insulation of the fireproof and high-temperature resistant coating by modifying epoxy resin with phenolic resin, improving the uniformity of the coating by the condensation product of 3-aminopropyltrimethoxysilane and polydimethylsiloxane, preparing polyethylenediamine phosphate and forming a catalytic coating system of reaction byproducts. The coating not only has the advantages of high temperature resistance of phenolic resin and toughness and adhesion of epoxy resin, but also shows strong mechanical properties, and has broad application prospects in the fields of thermal insulation, heat insulation and high-temperature protection.

The invention relates to the technical field of textile processing, in particular to a tea essential oil textile with an emotion regulation function and a preparation method and application thereof.The tea essential oil textile is prepared from Fenghuang Dancong tea essential oil, lavender essential oil, chamomile essential oil, soft waterborne polyurethane, polydimethylsiloxane, vitamin E, hydroxypropyl methyl cellulose and distilled water; 12 parts of Fenghuang Dancong tea essential oil; the proportion of the lavender essential oil is 5 parts; the proportion of the chamomile essential oil is 3 parts; the proportion of the soft waterborne polyurethane is 40 parts; the proportion of the polydimethylsiloxane is 15 parts; the proportion of vitamin E is 2 parts; the proportion of the hydroxypropyl methyl cellulose is 3 parts; the proportion of distilled water is 20 parts; comprising the following steps: raw material pretreatment, oil phase preparation, water phase preparation, emulsification and mixing, fabric pretreatment, coating and molding, and post-treatment and inspection. Through precise raw material ratio and process, the effects of relieving anxiety, relaxing emotion and the like are achieved, and meanwhile the problems that essential oil is non-uniform in fusion and prone to loss are solved.

The invention provides firming and anti-wrinkle essence containing fibroin composite microspheres, which is prepared from three groups of preparation raw materials, namely a phase A, a phase B and a phase C. The essence is prepared from glycerol, methylpropanediol, methyl gluceth-20, polydimethylsiloxane, panthenol, polyglycerol-3 methyl glucose distearate, squalane and sodium hyaluronate, the phase B is prepared from aminomethyl propanol; and the phase C comprises tranexamic acid, silk amino acids, a fibroin composite microsphere aqueous solution, 1, 2-hexanediol and 0.1%-0.2% of glycosylglycerol. The firming and anti-wrinkle essence disclosed by the invention exceeds the limitation of a single component, realizes the comprehensive effect from instant stability maintenance to long-acting anti-aging, represents the direction from current skin care product research and development to multi-effect collaboration, intelligent delivery and user-friendly development, and has important market value and scientific and technological significance.

The preparation method comprises the following steps: step 1, preparing polydimethylsiloxane, namely PDMS-CTA, of which the end group is an RAFT (reversible addition-fragmentation chain transfer) agent, performing RAFT polymerization induced self-assembly reaction on PDMS-CTA serving as a hydrophobic macromolecular chain transfer agent and a functional monomer in a water-phase medium to obtain a siloxane block-containing polysiloxane dispersion; the polydimethylsiloxane is used as a core layer, and the functional polymer is used as a shell layer; step 2, carrying out quaternization reaction in the dispersion, and converting a tertiary amine group in a polymer shell layer into a quaternary ammonium salt group to obtain a Q-PDMS dispersion with cations on the surface; step 3, carrying out a controllable hydrolytic condensation reaction on the Q-PDMS dispersion, so that an alkoxy silane unit in a shell layer forms a cross-linked structure, and obtaining a cross-linked cationic dispersion; in a water phase, a quaternized and cross-linkable PDMS core-shell dispersion is constructed through RAFT polymerization induced self-assembly reaction, so that the synergistic consideration of controllable surface cation exposure and a lasting low-surface-energy wear-resistant coating function is realized.

The invention discloses a method for producing a biological bacterial fertilizer from tylosin residues, and relates to the technical field of organic fertilizers. When the biological bacterial fertilizer is prepared, cotton straw powder is depolymerized with sulfuric acid to prepare cotton straw polyol; the preparation method comprises the following steps: sequentially reacting chitosan with methyl acrylate and triethylene tetramine to prepare modified chitosan; pig manure, wood chips, a complex microbial inoculant and tylosin mushroom dregs are uniformly mixed for aerobic composting, and a cured mushroom dreg mixture is prepared; and uniformly mixing the cotton straw polyol, the modified chitosan, the dihydroxyl-terminated polydimethylsiloxane, the polymethylene polyphenyl polyisocyanate and the cured mushroom dreg mixture, and carrying out extrusion molding to obtain the biological bacterial fertilizer. The biological bacterial fertilizer prepared by the invention has the advantages of low tylosin residue and slow release.

The invention discloses alkoxy-terminated polydimethylsiloxane with low volatile matter and a preparation method of the alkoxy-terminated polydimethylsiloxane, and belongs to the technical field of polysiloxane. The preparation method comprises the following steps: firstly, mixing and dehydrating octamethylcyclotetrasiloxane, methyl trifluoropropyl cyclotrisiloxane and modified cyclodextrin, then adding a catalyst I, stirring and reacting, adding a neutralizing agent after the reaction is finished, and removing low-boiling-point substances to obtain a cyclodextrin modified fluorine-containing silicon prepolymer; and under the protection of inert gas, mixing and dehydrating the cyclodextrin modified fluorosilicone-containing prepolymer and octamethylcyclotetrasiloxane, adding a catalyst II, stirring, then adding methyltrimethoxysilane, reacting, decomposing the catalyst after the reaction is finished, and devolatilizing to obtain the low-volatile alkoxy-terminated polydimethylsiloxane. The alkoxy-terminated polydimethylsiloxane provided by the invention has lower volatile matter, and the chemically anchored stable nanostructure of the alkoxy-terminated polydimethylsiloxane can continuously lock small molecules in the product for a long time, so that the risk of secondary volatilization in storage and use is effectively avoided.

The invention relates to an emulsifying and thickening composition, a spray type emulsion containing the emulsifying and thickening composition and a preparation method of the spray type emulsion. The emulsifying and thickening composition is prepared from the following components in parts by weight: 1.4 to 2.2 parts of sorbitol polyether-30 tetraisostearate, 0.05 to 0.2 part of hydrogenated lecithin, 0.1 to 0.3 part of polyglycerol-3 methyl glucose distearate, 0.15 to 0.25 part of acrylic acid (ester) / beheneth-25 methacrylate copolymer, and 4 to 7 parts of cyclopentasiloxane. The test result shows that the emulsion developed by adopting the composition changes the traditional smearing type use method of the emulsion, has the excellent characteristics of spraying performance, uniform mist bead particle size, high consistency, non-flowability and the like, breaks through the traditional technical shortages through the combination of a secondary shearing technology and an emulsification innovation technology, is novel in mode and convenient to use, and has a wide application prospect. Good market prospects are realized.