410 results about "Polyvinyls" patented technology

The invention discloses a method for preparing a stable transparent electrode provided with a neutral PEDOT/PSS conducting layer. The transparent electrode comprises a transparent base material layer and the conducting layer covering the transparent base material layer, wherein the conducting layer comprises a coated first silver nanowire conducting layer part and a second neutral PEDOT/PSS macromolecule conducting layer part or a macromolecule conducting layer part formed by mixing neutral PEDOT/PSS with silver nanowires, and the PEDOT/PSS macromolecule conducting layer part is made of neutral PEDOT/PSS conductive ink. The preparing method comprises the steps that 3,4-EDOT is polymerized into PEDOT/PSS dispersion liquid in the presence of PSS, alkaline additives are added to regulate the PH, neutral PEDOT/PSS dispersion liquid is obtained after the ink strength is high enough through the seasoning technology, and at least one kind of organic functional auxiliaries is added to the neutral PEDOT/PSS dispersion liquid to obtain the stable transparent electrode. The transparent electrode prepared with the method has the advantages of being high in conductivity, high in light permeability, simple in preparing technology, resistant to weather and current stability and the like and can be applied to the fields such as organic solar cells, organic light emitting diodes and touch display screens.

Polymeric compounds of formula I comprising boronic acid are provided. These polymeric compounds are prepared either by grafting boronic acid containing compounds (e.g. 4-carboxyphenylboronic acid) to hydrolysed poly(N-vinylformamide) or hydrolysing copolymer(s) obtained by copolymerizing vinyl group containing boronic acid monomers (e.g. -vinylphenyl boronic acid) and N-vinylformamide. These polymeric compounds are used in increasing the wet strength of paper in paper-making processes. Formula (I).

About 0.001 to 1 part by weight of a phenol component (B1) and/or about 0.001 to 10 parts by weight of an amino acid (B2) are added relative to 100 parts by weight of a polyacetal resin (A) to prepare a polyacetal resin composition. The phenol component (B1) may be a novolak phenol-series resin, a phenol aralkyl-series resin, a polyvinyl phenol-series resin, a polyhydric phenol, a polyphenol, a catechin compound, or a lignin. The amino acid (B2) may be an α-amino acid, a β-amino acid, a γ-amino acid, a δ-amino acid, or a derivative of an amino acid. The polyacetal resin composition may further contain an antioxidant, a heat stabilizer, a processing stabilizer, a weather (light)-resistant stabilizer, or a coloring agent. The polyacetal resin composition ensures marked inhibition of formaldehyde emission.

The present invention is directed to the use of a combination of a polymeric chelant and coagulant to treat metal containing wastewater. More particularly, the invention is directed at removing copper from CMP wastewater. The composition includes a combination of (a) a polymeric chelant derived from a polyamine selected from the group consisting of diethylenetriamine (DETA), triethylenetetraamine (TETA), tertraethylenepentaamine (TEPA), poly[vinylamine], and branched or linear poly[ethylenimine] (PEI); and (b) a water soluble or dispersible copolymer of a tannin and a cationic monomer selected from the group consisting of methyl chloride or dimethyl sulfate quaternary salt of dimethyl aminoethyl acrylate, diethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dimethylaminopropyl methacrylamide, dimethylaminopropyl acrylamide, and diallyl dimethyl ammonium chloride.

The invention provides a biomaterial modified with a hydrophilic lubrication coating on the surface and a preparation method of the biomaterial and belongs to the technical field of surface and interface modification of biological medical device materials. The preparation method comprises the following materials: mixing a vinyl active monomer, dopamine hydrochloride and a tris buffer solution to form a precursor solution; immersing a to-be-modified biological base material into the precursor solution for performing polymerization reaction. The dopamine in the biomaterial disclosed by the invention is subjected to oxidation self-crosslinking polymerization under the aerobic condition; meanwhile, the dopamine produces free radical in the oxidation self-crosslinking process; the generated free radical initiates free radical polymerization of the vinyl active monomer on the surface of the biological base material to form a coating; as wet adhesion effect of the dopamine enables the coatingto be well adhered to the surface of the biological base material, a binding force of the coating and the biological base material is better; means such as ultraviolet or heating is not needed in theprocess, so that the cost is low; as polyvinyl active monomer contains a large amount of hydrophilic groups, the biomaterial shows stable water lubrication performance.

A method for preparing non-agglomerating mixed bed ion exchange resin systems without affecting the ion exchange kinetics of the anion exchange resin component of the mixed bed system is disclosed. Pretreatment of the anion exchange resin component with a sulfonated poly(vinylaromatic) polyelectrolyte is particularly effective in providing non-agglomerated mixed bed systems without affecting ion exchange kinetics. Treatment levels of 10 to 800 milligrams per liter of anion exchange resin with sulfonated poly(vinylaromatic) polyelectrolyte having number average molecular weight from 5,000 to 1,000,000 are particularly preferred.

The invention relates to an anti-static modified material with carbon nanotubes (CNTs) predominantly and a process which is a thermal oxidation treatment with acid together with a ball grinding surface treatment to CNTs and comprises: adding maleic anhydride grafted polyethylene, coupling agents and EPT rubber to prepare the high concentration masterbatch of CNTs/PE anti-static composite material by solution blending and melt blending methods, mixturing the said masterbatch with common PE in a finite proportion to melt blend and prill, then getting the final CNTs/PE anti-static composite material. The electrical surface resistivity and volume resistivity can reach the operating requirements of the anti-static material when the content of CNTs is only 0.3 wt % in the CNTs/PE anti-static composite material in the invention.

The present invention provides an acidic aqueous polishing composition suitable for polishing a silicon nitride-containing substrate in a chemical-mechanical polishing (CMP) process. The composition, at point of use, comprises about 0.01 to about 2 percent by weight of a particulate calcined ceria abrasive, about 10 to about 1000 ppm of at least one cationic polymer, optionally, about 10 to about 2000 ppm of a polyoxyalkylene polymer; and an aqueous carrier therefor. The at least one cationic polymer is selected from a poly(vinylpyridine) polymer and a combination of a poly(vinylpyridine) polymer and a quaternary ammonium-substituted polymer. Methods of polishing substrates and of selectively removing silicon nitride from a substrate in preference to removal of polysilicon using the compositions are also provided.

A cold-storage material obtained by adding 4 parts by weight of poly(N-vinylacetamide) as a cold-storage-prolonging agent to 100 parts by weight of 20 wt.% aqueous sodium chloride solution and adding thereto sodium borate as a supercooling inhibitor in an amount of 3 parts by weight per 100 parts by weight of the aqueous solution was packed into a pack (1) and cooled in a refrigerator to solidify it. This pack (1) containing the cold-storage material was placed in a cold-reserving box (2), which was examined for temperature change. As a result, it was ascertained that the cold-storage retention time was prolonged. Thus, a cold-storage material can be provided which has a prolonged cold-storage retention time and is suitable for use in cold reservation for long-term transportation, storage, display, etc.

The present invention relates to a sheath material for an optical fiber cable, and a production process thereof. The sheath material comprises, by weight, 85-95% of a polyolefin base material, 2.35-2.85% of carbon black, 0.5-1% of an antioxidant, and 0.8-1% of an additive, wherein the polyolefin base material comprises a polyethylene base material and a modifier, and the additive comprises a fluorine-containing rheological agent PPA, a lubricant, a plastic brightening agent and a softener. During production, carbon black is made into a masterbatch; PPA is made into a masterbatch by using a polyethylene base material; the carbon black masterbatch, the PPA masterbatch, an antioxidant, a plastic brightening agent and a softener are mixed; the mixed material is added to EVA to mix; the resulting mixture is added to polyethylene to mix, and then mastication extrusion is performed through a plastic extruder. According to the present invention, high and medium density polyethylene is adopted as a base material for the optical fiber cable sheath, such that a chemical performance is stable; and various auxiliary materials are added to the polyethylene base material, such that performances of the optical fiber cable sheath are improved, and various use requirements of the optical fiber cables are met.

The present invention concerns label stock comprising a laminate of face stock, a pressure sensitive adhesive layer and a release liner, wherein the pressure sensitive adhesive layer comprises (a) at least one block copolymer, comprising at least two terminal blocks of poly(vinyl aromatic compound) and at least one midblock of a randomly copolymerized mixture of isoprene (1) and butadiene (B) used in a weight ratio of (1):(B) of 35:65 to 80:20, said midblock having a single glass transition temperature Tg of at most determined according to ASTM E-1 356-98), (b) at least one diblock copolymer, comprising one block of poly(vinyl aromatic compound) and one block of polymerized butadiene and/or isoprene; (c) a tackifying resin; and (d) optionally a plasticizer wherein component (a) is a thermoplastic elastomer, component (b) comprises from 30 to 85% by weight of the mixture of components (a) and (b), and wherein on 100 parts by weight of the mixture of components (a) and (b), from 20 to 450 parts by weight component (c) is used.

The invention discloses a polyvinyl tetrazole separation medium and a preparation method thereof. The polyvinyl tetrazole separation medium has a structurally general formula shown in the specification. The separation medium of the invention can be obtained by modifying polyvinyl tetrazole on the surfaces of silica gel, agarose or polystyrene microspheres. The separation medium of the invention has double functions of separating an ion-exchange chromatograph and a metal-chelating chromatograph. The medium is used for the ion-exchange separation chromatograph and the metal-chelating chromatograph of a protein, and has the characteristics of high protein adsorption capacity, quality, activity, and recovery rate.

A multilayer sheet including an (A) layer containing an ethylene type zinc ionomer as a main component and a silane coupling agent, and a (B) layer containing a polyethylene-based copolymer with a melting point of 90° C. or higher as a main component and a silane coupling agent having a content ratio with respect to the resin material that is lower than a content ratio of the silane coupling agent with respect to resin material in the (A) layer, wherein the total thickness of the (A) layer and the (B) layer is from 0.1 to 2 mm. Such multilayer sheet may be superior in adhesive strength, durability and heat resistance, and obtained at a suppressed cost.

Provided is a refrigerator oil composition for a refrigerant containing an unsaturated fluorinated compound having a carbon-carbon unsaturated bond, which is represented by a general formula (I): C₂F_pR_4-p, wherein R each independently represents a hydrogen atom, a chlorine atom, a bromine atom, or an iodine atom, and p represents an integer of 1 to 3. The composition contains a base oil (P) including one or more kinds selected from polyvinyl ethers, polyalkylene glycols, copolymers of a poly(oxy)alkylene glycol or a monoether thereof and polyvinyl ethers, and a polyol ester. The kinematic viscosity at 100° C. of the base oil (P) is 2.00 to 50.00 mm²/s, and the hydroxyl value thereof is 5.0 mgKOH/g or less. The refrigerator oil composition is excellent in compatibility with a refrigerant containing an unsaturated fluorinated compound having 2 carbon atoms and having a specific atom, and is also excellent in thermal stability.

There are provided foamable, foamable polyvinyl halide resin masses containing: A) 1 to 25 parts relative to 100 parts of polyvinyl halide, of a polymerizate obtainable through the emulsion polymerization of i) up to 20 to not more than 75 parts of methylmethacrylate, ii) 25 to 80 parts of one or more C2-C18 alkylmethacrylates, iii) 0 to 5 parts of one or more vinyl unsaturated monomers copolymerizable with (i) and/or (ii, wherein the components (i)-(iii) together yield 100 parts and are polymerized with up to a further 100 parts of usual additives for emulsion polymerization, wherein the emulsion polymerizate is single stepped and has a viscosity number of >700 cm3/g and wherein copolymers are excluded which contain iv) MMA per se, or less than 20 or more than 75 parts of MMA together with either v) one or more acrylic acid esters, and/or vi) ethyl methacrylate, n-butyl-methacrylate, or ethylhexyl methacrylate. The resin mass further includes: B) 0.1-10 parts based on 100 parts of the polyvinyl halide of one or more foaming materials, C) 0-100 parts based on 100 parts polyvinyl halide of the usual additives. This polyvinyl halide resin mass, after foaming, yields a resin mass which, as well as of good surface properties, has a foam density of <0.7 g/cm3.