1006 results about "Fluorine free" patented technology

The present invention provides inks and methods for making colored silicone hydrogel contact lenses. The ink of the invention comprises an actinically-curable binder copolymer comprising fluorine-containing segments and is characterized by having capability to be cured actinically or thermally to form a colored film on a molding surface of a mold or a silicone hydrogel contact lens and by having an increased durability in a solvated state in a silicone-hydrogel lens formulation in relation to a control colored film obtained from a control ink including an actinically-curable fluorine-free binder copolymer. The invention also provides methods for making colored silicone hydrogel contact lenses based on print-on-mold processes for producing colored contact lenses.

The invention discloses a preparation method of a water-based super-hydrophobic or super-amphiphobic coating. Nano-particles are ultrasonically dispersed into water, the pH of the solution is adjusted to obtain a nano-particle dispersion; The silane coupling agent is hydrolyzed under stirring to obtain an organosilane polymer/nanoparticle composite suspension; and then applied to the surface of the base material by spraying or dipping to obtain a water-based superhydrophobic/superamphiphobic coating. The present invention successfully prepares a water-based super-hydrophobic or super-amphiphobic coating with excellent performance without using any additives (organic solvent, surfactant and water-based solvent), and has many advantages such as water-based environmental protection, low price and excellent performance. , It has broader application prospects in the fields of self-cleaning surface, anti-corrosion coating, oil pollution prevention and oil transportation.

A perfluoropolyether-containing composition, which can easily conform to a fluorine-free substrate and can form a film on a surface of the substrate to fix the composition to the substrate surface, wherein the composition is a carbon-carbon double bond-containing composition comprising (A) a triisocyanate prepared by trimerizing a diisocyanate, and (B) a combination of at least two active hydrogen-containing compounds, and the component (B) comprises (B-1) a perfluoropolyether having at least one active hydrogen, and (B-2) a monomer having active hydrogen and a carbon-carbon double bond.

The invention relates to a fluorine-free superhydrophobic finishing agent containing modified nano silicon dioxide hydrosol and application thereof. The finishing agent is prepared by the following steps of: (1) mixing a precursor, an anionic surfactant and water and stirring violently at the temperature of between 20 and 50 DEG C; and (2) slowly adding ammonia water serving as a catalyst dropwise, stirring, adding long-chain alkylsiloxane serving as a modifier and stirring continually so as to obtain modified SiO2 hydrosol. The finishing agent has a stable property, avoids the pollution of an organic solvent and has high water repellency when used for performing superhydrophobic finishing on textiles.

The invention provides a hybrid polyurethane-polyacrylate dispersoid containing fluorine and siloxane and a preparation method thereof, wherein, an interpenetrating network structure and a nuclear shell structure exist in a dispersoid particle simultaneously. The hybrid polyurethane-polyacrylate dispersoid is polymerizing a polyurethane dispersoid containing double bonds (10-20 percent), a fluorine-containing monomer (5-15 percent), a fluorine-free monomer (10-30 percent), an initiating agent (0.1-2.0 percent), an emulsifying agent (0.5-5 percent), a chain transfer agent (0.01-0.5 percent) and deionized water (50-70 percent) by emulsion. The dispersoid is white lacteal liquid, contains no organic solvent, and has a solid content of 30-50 percent, a molecular weight of 10,000-100,000, a pH value of 7-9, a viscosity of 30-300cp and a stationary phase of more than 1 year. Paint films prepared by the dispersoid have good physical property and relatively low surface energy and can be applied to providing surface coatings with excellent water-proof/ antifouling performance.

The invention relates to a preparation method of lithium hexafluorophosphate. The preparation method comprises the following steps of: (1) distilling to obtain hydrogen fluoride liquid of which the purity is over 99.99 weight percent; (2) reacting the high-purity hydrogen fluoride liquid with phosphorus pentachloride to obtain mixed gas of the phosphorus pentafluoride and hydrogen chloride; (3) introducing the mixed gas of the phosphorus pentachloride and the hydrogen chloride into hydrogen fluoride and lithium fluoride, reacting at a certain temperature and under certain pressure to obtain solution of lithium hexafluorophosphate, exhausting hydrogen chloride gas at regular time, and absorbing by using water to prepare byproduct hydrochloric acid; and (4) crystallizing and separating, namely filtering the solution of lithium hexafluorophosphate, delivering filtrate into a crystallizing slot, separating the lithium hexafluorophosphate out at the temperature of between -70 and 80 DEG C, filtering, and performing primary drying and secondary drying to obtain a lithium hexafluorophosphate product, wherein the residual hydrogen fluoride gas is displaced by nitrogen. The preparation method has readily available raw materials and is easy to operate, the purity of the obtained lithium hexafluorophosphate product is over 99.9 percent, the moisture is lower than 10ppm, and the production requirements of lithium ion electrolytic cells are met.

The present invention relates to steel-making crystallizer protecting dregs, and is environment protecting fluoride-free protecting dregs suitable for continuous casting of plate billet and square billet. The protecting dregs consist of sintering base material, titanium-containing blast slag, manganese ore powder, bentone, carbon black, clay shaped graphite, etc. Its production process includes the synthesis of base material and the compounding of protecting dregs. The protecting dregs may be molten in the crystallizer homogeneously to produce cast billet lubricating and heat insulating effect and has no corrosion to casting machine and no pollution to water.

The invention provides a fluorine-free water-proofing agent and a preparation method thereof as well as a textile. The fluorine-free water-proofing agent free from fluorine element comprises the following components in percentage by weight: 10-20% of polyurethane, 10-20% of paraffin, 1-10% of a surfactant, 0.001-10% of an assistant and water. The fluorine-free water-proofing agent provided by the invention has a good waterproof effect and is environmental. According to the fluorine-free water-proofing agent, polyurethane is used as a key component. Compared with the prior art, the fluorine-free water-proofing agent has better waterproof effect and durability.

The invention provides a treatment method and treatment liquid for preparing a fluoride-free super-hydrophobic cotton fabric. The treatment liquid comprises the following components: 1-8ml of ammonia water of which the mass percent concentration is 25-28%, 80-140ml of ethanol, 5-6ml of tetraethyl orthosilicate, 2-4ml of hexadecyl trimethoxy siloxane, 0.5-3ml of alkane siloxane and 0-4ml of 3-glycidol ether oxy-propyl trimethoxysilane. According to the treatment method, a large amount of modified silicon dioxide nano-particles with water repellency are modified on the surface of the fabric by dipping the fabric in the treatment liquid of modified silicon dioxide sol, so that the contact angle between the prepared fabric and a water drop is more than 150 degrees, the fabric has super-hydrophobic performance, and the physical and mechanical properties of the fabric are not affected. The treatment method and treatment liquid for preparing the fluoride-free super-hydrophobic cotton fabric are environment-friendly in process, simple, convenient, effective and in accordance with ecological textiles, and can meet requirements for industrial mass production.

A copolymer for cosmetics, which is obtained by polymerizing (A) 5 to 95% by weight of a fluorine-containing (meth)acrylate, and (B) 5 to 95% by weight of at least one fluorine-free monomer selected from the group consisting of (i) a silicone macromonomer, (ii) a polyalkylene glycol (meth)acrylate, (iii) an alkyl (meth)acrylate, and (iv) an alkyl (meth)acrylate macromonomer, can be easily incorporated in cosmetics and can form a film excellent in water resistance, water- and oil-repellency, feeling when used, and safety. This copolymer for cosmetics can improve the drawbacks of powder treated with a fluorine-containing compound.

A method for fabricating a transistor that includes forming a trench in a substrate, forming a gate dielectric layer on a surface of the trench, forming a first fluorine-free tungsten layer as an interface stabilization layer over the gate dielectric layer, forming a second fluorine-free tungsten layer as a barrier layer over the first fluorine-free tungsten layer, forming a bulk tungsten layer as a gate electrode over the second tungsten layer to fill the trench, and selectively recessing the third tungsten layer, the second tungsten layer and the first tungsten layer to form a buried gate structure.

Fluorine-free photoacid generators and photoresist compositions containing fluorine-free photoacid generators are enabled as alternatives to PFOS/PFAS photoacid generator-containing photoresists. The photoacid generators are characterized by the presence of a fluorine-free aromatic sulfonate anionic component having one or more electron withdrawing groups. The photoacid generators preferably contain a fluorine-free onium cationic component, more preferably a sulfonium cationic component. The photoresist compositions preferably contain an acid sensitive imaging polymer having a lactone functionality. The compositions are especially useful for forming material patterns using 193 nm (ArF) imaging radiation.

The invention discloses a fluoride-free waterproof agent. The fluoride-free waterproof agent comprises the following components according to mass percent: 10%-20% of fluoride-free hydrophobic polymer, 10%-20% of (modified) polyethylene wax, 1%-10% of surfactants, 0.001%-10% of auxiliaries and the balance being water, wherein the fluoride-free hydrophobic polymer is formed through free radical polymerization of fluoride-free hydrophobic monomers with hydrocarbon hydrophobic groups and double bonds and functional monomers; the functional monomers are selected from one or more of monomers with a functional group besides double bonds; the (modified) polyethylene wax is selected from polyethylene wax and oxidized polyethylene wax with the softening point of above 100 DEG C; free radicals are generated by thermal decomposition of initiators. The fluoride-free waterproof agent provided by the invention has a good waterproof effect, does not contain fluorine and has an environment-friendly effect. Compared with the prior art, adopting the (modified) polyethylene wax with a high melting point, the fluoride-free waterproof agent has a better waterproof effect.

A method of forming a fluorine-free tungsten diffusion barrier layer having a reduced resistivity, and a semiconductor device, and method for forming such semiconductor device, using the fluorine-free tungsten diffusion barrier layer.

The invention belongs to the field of water repellent finishing and processing of fabric, and particularly relates to freon-free super hydrophobic UV resistant cotton fabric and a method for preparing the same. The freon-free super hydrophobic UV resistant cotton fabric is prepared by padding a fabric with nanometer titanium dioxide sol and processing the fabric by using a long-chain freon-free alkyl compound. The titanium dioxide content of the titanium dioxide sol is 0.2 to 5.0 weight percent, and the number of long-chain carbon atoms of the long-chain freon-free alkyl compounds is 6 to 18. The contact angle between the prepared cotton fabric and water drops is over 150 degrees, so that the cotton fabric has a super hydrophobic property; and the UV resistant factor of the prepared cotton fabric is over 50+, so that the cotton fabric has high UV resistance.

The invention relates to a fluorine-free nano durable super hydrophobicity finishing method for cellulose fabric, which comprises the following steps: (1) preparing hydrous medium solution containing tetra-alkyl ester silicate, polycarboxylic acid and a crosslinked catalyst, oscillating and stirring the hydrous medium solution to obtain SiO2 sol, soaking and rolling the cellulose fabric twice respectively, and curing the cellulose fabric; and (2) preparing non-aqueous solvent solution of alkyl siloxane catalyzed and hydrolyzed by using inorganic acid or organic acid water solution, soaking the cellulose fabric in the solution, and curing the cellulose fabric. The method is simple and safe, has low performance requirement on equipment, is easy for industrialization, and is particularly applicable to the hydrophobicity finishing of the cellulose fabric.

The present invention provides a laminate in which at least one fluororesin is used and which is highly impermeable to fuels.

The present invention is a laminate having a layer (A) comprising a fluororesin and a layer (B) comprising a fluorine-free organic material, wherein said laminate has a fuel permeation rate of not higher than 1.5 g/m²/day.

The invention discloses non-fluorine polyurethane insulating material and making method, which comprises the following steps: allocating raw material with 10-16% isocyanate, 6-10% polyether polyol, 0.05-0.25% water, 2-.35% foamer, 0.05-0.2% foam-even agent, 0.04-0.08% initiator, 0.1-3% lignin and 0.1-2% waste hard foaming powder; blending each component together under normal temperature and normal pressure; stirring evenly; casting into mould or plastic filling space immediately; foaming; obtaining the product.

There is provided a surface treatment agent which comprises a fluoropolymer having repeating units derived from a fluorine-containing monomer of the formula:

wherein (a) the fluoropolymer contains a silicon atom, and/or (b) the surface treatment agent contains a fluorine-free polymer which is different from the fluoropolymer and which is a silicon-containing polymer. The surface treatment agent imparts excellent water- and oil-repellency and soil resistance to textiles while retaining the feeling of the textiles, even if the surface treatment agent contains a fluorine-containing acrylate polymer substituted at its α-position by a fluorine atom, a chlorine atom or the like.

The invention provides a method for comprehensively recycling rare earth and fluorine in a process of treating bastnaesite. The method comprises the steps of: carrying out oxidizing roasting on the bastnaesite, leaching a roasted mixture by adopting hydrochloric acid to obtain a rare earth chloride solution containing less cerium and fluorine-containing and cerium-rich slag, wherein a roasting additive is added in the bastnaesite in the roasting process and/or a catalytic leaching additive is added in the mixture in a hydrochloric acid leaching process; and then separating and recycling rare earth chloride from the fluorine-containing and cerium-rich slag. According to the method provided by the invention, the consumption of a large quantity of chemical raw materials can be reduced, the pollution to the environment in a use process is greatly reduced, and the production cost is also greatly lowered. According to the method, the procedures of multiple times of solid-liquid separation and the like are eliminated, the process is simplified, the manipulation strength is reduced, the rare earth loss is reduced, the rare earth yield is increased, and especially the hydrochloric acid leaching recycling rate of high-valent non-cerium rare earth is increased. The method provided by the invention realizes fluorine-free emission in the whole process, and has the characteristics of low consumption, high efficiency and the like.