38 results about "Polymer ratio" patented technology

A water insoluble interpenetrating polymer network is obtained by independently cross-linking a first polymer derived from a sulfonic acid or phosphonic acid group containing alkenyl monomer and a second polymer polymerized independently of the first polymer and interpenetrating the first polymer, where the second polymer is selectively permeable to water compared to methanol. Through adjustment of the degree of first polymer monomer acidification, polymer ratios and the extent of cross-linking in the at least two interpenetrating polymers, ion conductivity and solvent permeability are controlled. A film produced from such a water insoluble interpenetrating polymer network is well suited as a membrane in a direct methanol fuel cell. The relative degree and mechanism of cross-linking and interpenetrating the first polymer and second polymer are also adjustable parameters that impact on film properties.

The invention relates to a heavy metal ion adsorption film and a production method thereof. The heavy metal ion adsorption film is composed of polyvinyl alcohol and amido polymers at a polyvinyl alcohol/amido polymer ratio of (95:5) to (20:80). The amido polymers are polyvinyl amine, polyallylamine and branched polyethylene. The amido polymers are introduced into the aqueous solution of polyvinyl alcohol and then the resulting mixture undergoes crosslinking reaction with a cross-linking agent to form a three-dimensional polymer network. The method is simple, feasible and free of organic solvents. The introduction of amido groups can efficiently increase the water swellability of polyvinyl alcohol film and simultaneously enhance the adsorbability of the film to heavy metal ions.

Cushioning elements include a breathable material configured to allow gases to pass through at least a portion thereof, and a plurality of discrete segments of thermoplastic elastomeric gel (“gel”) heat-fused or otherwise attached to the breathable material. The gel comprises an elastomeric polymer and a plasticizer, with a plasticizer-to-polymer ratio of from about 0.3 to about 50. The plurality of discrete segments defines at least one breathable gap between adjacent discrete segments. Methods of forming cushioning elements include forming a plurality of discrete segments of gel, securing each segment to a breathable material, and providing a gas path through the breathable material and between adjacent segments. Another method includes providing molten gel within a mold, providing at least a second portion of the gel within a permeable material, and solidifying the gel to form discrete segments of gel.

The present invention provides a modified substrate including a hydrophilic polymer wherein the soluble hydrophilic polymer ratio is 15 weight percent or less and the number of adhered human blood platelets is 10/4.3×10³ μm² or less. In addition, the present invention provides a method for producing a modified substrate including a step of irradiating the substrate with radiation while the substrate is brought into contact with an aqueous solution containing a hydrophilic polymer and an antioxidant. The present invention provides a modified substrate having high hematologic compatibility wherein the hydrophilic polymer is immobilized on the surface of the substrate, and a method for producing the same.

The amount of penetration into the skin in adhesive patches generally tends to show a certain peak and trough. An adhesive patch is provided in which the drug shows satisfactory penetrability because of a polymer proportion and drug penetration is constant over a certain period. The adhesive patch for external use has a pressure-sensitive adhesive layer containing a drug. It is characterized in that the pressure-sensitive adhesive layer comprises: polyvinylpyrrolidone and/or a copolymer of monomers including vinylpyrrolidone as the main ingredient; and a (meth)acrylic ester copolymer having a basic nitrogen atom and/or cationic nitrogen atom.

A highly filled oxidatively degradable polymer packaging material and its preparation method, which are mixed and extruded from the following components, the components are calculated by weight: inorganic filler 70-90, polyolefin polymer 10-30, optical function Auxiliary 0.01-0.2, thermal functional additive 0.01-0.2, coupling agent 0.05-5, lubricant 0.01-5. Drying the powder of the inorganic filler, adding a coupling agent to a mixer to mix and activate it; then mixing it with a polymer and an oxidative degradation additive according to the ratio, melting and mixing it in an extruder and granulating it to obtain a packaging material. After use, the packaging material of the present invention can be absorbed into fragments or powder under the action of oxygen and sunlight in the natural environment, and further degrade into carbon dioxide, water and inorganic minerals, which solves the problem of "white pollution". The packaging material adopts non-toxic and harmless raw materials, has abundant sources, is low in cost, and can be widely used in fields such as food packaging and industrial product packaging.

The invention provides an aqueous dispersoid of fluorine-containing seed polymer particles serving as a film formation component for an aqueous coating combination. Although the ratio of acrylic acid ester polymers during seed polymerization is high, the acrylic acid ester polymers are highly compatible with the fluorine-containing polymer serving as seed particles, and can provide transparent films. The invention relates to an aqueous dispersoid of fluorine-containing seed polymer particles and an aqueous coating combination containing the aqueous dispersoid. A fluorine-containing polymer containing at least one fluoro-alkene unit is served as a seed particle and is obtained by polymerization of monomer mixtures containing acrylic acid ester monomers and ethylene monomer containing hydrolyzed monosilane, wherein the content of the acrylic acid ester monomer unit is, by mass, 40-400 parts relative to 100 parts of the fluorine-containing polymer particles, and the content of the ethylene monomer containing hydrolyzed monosilane is by mass, 0.1-2 parts relative to 100 parts of the acrylic acid ester monomer unit.

Provided are a binder for an electric double layer capacitor electrode which gives an electrode having a high electrode density and a high binding force and which comprises a polymer that can give a polymer film having a tensile stress of 2 MPa or less when the film is elongated at the ratio of 100% and having the elongation at break of 450% or more; a binder composition for an electric double layer capacitor electrode and a slurry composition for an electric double layer capacitor electrode which each comprises the binder; an electrode produced by use of the slurry composition; and an electric double layer capacitor which has the electrode so as to exhibit a large electrostatic capacity and a small internal resistance.

The invention provides a polymer network liquid crystal display. The polymer network liquid crystal display comprises a first matrix layer, a first conducting layer, a first orientation layer, a liquid crystal dielectric layer, a second orientation layer, a second conducting layer and a second matrix layer, wherein the liquid crystal dielectric comprises a first component accounting for 1-15% of the total weight of the liquid crystal dielectric and a second component accounting for 85-99% of the total weight of the liquid crystal dielectric; a group composed of one or more polymerizable compounds having structures in general formula I and/or general formula II is used as the first component; and a nematic phase liquid crystal composition is used as the second component. The polymer network liquid crystal display is in a transparent state in case of zero electric field, and the light transmittance is higher than 85%; after voltage application, the polymer network liquid crystal display is in a scattering state; no visual angle problem exists in the transparent state; and in case of a 120-degree visual angle, the light transmittance is still higher than 80%. Therefore, the polymer network liquid crystal display provided by the invention has better off-state light transmittance and a bigger visual angle; and meanwhile, due to the small proportion of polymers, the polymer network liquid crystal display has lower drive voltage and can realize the reverse mode PDLC (polymer dispersed liquid crystal) effect of low-voltage driving. The general formula I and the general formula II are shown in the specification.

The present invention relates to an inert, non-asbestos separator and method of making same, the separator comprising an inorganic/polymer fibrid and agglomeration composite material containing from about 5 weight percent to about 70 weight percent of organic halocarbon polymer fibers together with from about 30 wt percent to about 95 weight percent of a finely divided non-organic particulate, which non-organic particulate is firmly bound in said composite fibrids and agglomerates; a natural gum thickening agent in an amount to provide a viscosity of about 6270 to about 590 cP at 0.22 sec⁻¹; and an inert inorganic particulate powder whereby the inert inorganic particulate remains unbound from the inorganic/polymer fibrid and agglomeration composite, the inorganic particulate powder having a mean particle size of not greater than 1.0 μm and being present in an amount to provide a ratio of polymer fiber composite to unbound inorganic particulate in a range from about 1 to 25.

A via opening having a varying sidewall taper can be made by varying the proportion of polymers deposited on the sidewalls during the etch. For example, the proportion of a fluorine-containing etch gas and an inert carrier gas can be changed to etch smooth variably tapered vias in silicon oxide to ensure complete filling of the vias by a subsequently deposited layer of material.

Yarns of mixed ratios of bi-component fibers are disclosed, in which some filaments of a yarn produced during the spinning process are of different polymer ratios than other filaments in the same yarn. The yarns are preferably spun with the desired mixture of polymer ratios and the difference in polymer ratios are preferably at least about 10% absolute. The net overall ratio of the yarn is between about a 55/45 and a 75/25 mixture of PET/PTT by weight. Knit and woven fabrics can be prepared that include these mixed ratio yarns.

The invention discloses a plastic melt PVT (pressure, volume and temperature) characteristic experimental device. The plastic melt PVT characteristic experimental device comprises a pressure device, a temperature device, a parameter acquisition device and an experimental platform. As a high-molecular polymer, plastic is complicated in characteristics which can be influenced by different ratios of polymers in plastic; meanwhile, in the injection molding production, the quality of a plastic piece is severely influenced by pressure and temperature. The plastic melt PVT characteristic experimental device is simple in structure and capable of conveniently and rapidly acquiring various parameters needed in the experiment and simulating the flow situation of a melt in a runner. The plastic melt PVT characteristic experimental device is mainly used for researching the PVT characteristics of different plastic or high-molecular materials, so that theoretical basis can be provided for selection of plastic in the injection molding production and selection of the temperature and pressure, optimal production parameters can be acquired, the production efficiency can be improved, the quality of the plastic piece can be improved, the cost is reduced, and the significance is great.

The invention provides an optical switching element and a device, an optically addressed type display medium and a display each including such an optical switching element. The optical switching element comprising an optical switching layer including lower and upper charge generating layers and a charge transporting layer sandwiched therebetween, wherein the optical switching element has at least one of the following characteristics. (1) In the charge transporting layer, a charge transporting material to binder polymer ratio calculated according to the formula: [charge transporting material/(charge transporting material+binder polymer)]×100 (% by weight) is 50% by weight or more; (2) a polymer compound is used as the charge transporting material; and (3) the charge generating layer on the light incident side (the lower charge generating layer) has a lower light absorptance than that of the other charge generating layer (the upper charge generating layer).

The invention discloses a synergistic high-tower urea-based fertilizer and a preparation method thereof. The synergistic high-tower urea-based fertilizer comprises the following components in percentage by mass: 40%-50% of urea, 25%-32% of potassium chloride, 15%-25% of monoammonium phosphate, 0.4%-0.8% of a regulator, 3%-6% of a high-molecular polymer and 1%-3% of biological bacteria. According to the preparation method, a high-tower granulation technology is adopted, and the plant growth regulator, the high-molecular polymer and the biological bacteria are added so that the product is more comprehensive in nutrition, and has the effects of improving the product quality, promoting fertilizer synergy, improving the physical and chemical properties of soil, improving the crop quality and yield and enhancing the disease resistance of crops.