42 results about "Stringiness" patented technology

Dental bleaching compositions include a dental bleaching agent, a generally linear high molecular weight (i.e., greater than about 500,000) polyvinyl pyrrolidone (PVP) and / or polyethylene oxide (PEO) tissue adhesion agent included in amount that imparts a high level of adhesiveness, a rheology-modifying agent such as fumed silica or fumed alumina that reduces or eliminates stringiness otherwise caused by the high molecular weight PVP and / or PEO, and a solvent or carrier. Dental bleaching compositions may include carboxypolymethylene instead of or in addition to PVP and / or PEO, wherein the fumed silica or fumed alumina increases long-term rheological stability even in the presence of a high concentration of dental bleaching agent. Dental treatment devices including a barrier layer and a quantity of the dental bleaching composition positioned adjacent to the barrier layer.

The invention relates to a wiredrawing method and a wiredrawing device for an outer diameter fluctuation optical fiber perform, particularly a large-size outer diameter fluctuation optical fiber perform. Compared with an existing wiredrawing method, the wiredrawing method has the different points that a radial seal adjustable device is arranged at a furnace mouth at the upper end of a heating cavity of a wiredrawing furnace; and in the wiredrawing process, the optical fiber perform is clung to the radial seal adjustable device, so that a radial gap between the optical fiber perform and the radial seal adjustable device, i.e. the difference between the outer diameter of the optical fiber perform and the seal aperture of the radial seal adjustable device, is kept in the range of 0 to 0.2mm. According to the invention, the radial gap between the large-size perform with nonuniform outer diameter variation and the radial seal adjustable device is always kept in a small allowable gap range or tends to zero in the wiredrawing feeding process, so that the wiredrawing quality is ensured and the technical difficult problem that the large-size outer diameter fluctuation optical fiber perform cannot be directly subjected to wiredrawing processing is solved; and the yield and the processing efficiency of optical fibers are further improved and the stringiness of the single perform is also improved, so that the optical fiber manufacturing cost is further reduced.

A gelating agent for an alkaline cell is a cross-linked polymer (A) comprising (meth)acrylic acid and / or its alkali metal salt as a main constituent monomer unit and obtained by an aqueous solution polymerization or a reversed phase suspension polymerization and satisfies the following required conditions (1), (2). The gelating agent has good draining property, satisfactorily high speed charging property of the alkaline electrolytic solution and is therefore effective to produce cells with little unevenness of the charging amount of the electrolytic solution and having uniform quality by mass production and an alkaline cell using the gelating agent is provided with durable discharge time and remarkably excellent impact resistance for a long duration. The said required conditions are required condition (1); that the gelating agent contains 50% by weight or more of a particle whose swollen particle size becomes 300 to 4,000 mum when the gelating agent is swollen in an aqueous potassium hydroxide solution of 40% by weight concentration and required condition (2); that the aqueous potassium hydroxide solution of 40% by weight concentration containing 3% by weight of the gelating agent has 0 to 20 mm stringiness.

The invention discloses a production method for modified casein. Qula casein is directly used as a raw material and is puffed through an extruder to produce the modified casein, so that the wire drawing property of the qula casein is effectively improved and is doubled, so that the standard of fresh milk casein is basically met. The emulsibility, the dissolving property and the viscosity of the qula casein are enhanced, and the casein production technology and the quality of a product are improved; the problems of low dissolving property, odor of the product and the like of conventional qula casein are solved; meanwhile, the obtained modified casein product is high in viscosity and high in flowability; the product has a bright color, smells normally, is crystalline, has a good dissolving characteristic, and can meet a high product quality standard; all physical and chemical indexes such as proteins, fat and ash meet the standard.

The present invention is formed by utilizing the cross-linked polymer of acrylic acid and / or methacrylic acid and / or alkali metal salts obtained by aqueous solution polymerization method or reverse phase suspension polymer as the main constituent unit, and has the following (1 ), (2) The gelling agent for alkaline batteries and the batteries using it, the discharge continuity and impact resistance of alkaline batteries are excellent, the rolling liquid of alkaline electrolyte is good, corresponding to The high-speed filling of the liquid and the small deviation of the electrolyte filling amount can effectively mass-produce batteries with uniform quality. (1) In the concentration of 40% by weight potassium hydroxide aqueous solution, the swellable gelled particles with a particle diameter of 300 to 4000 μm contain 50% or more; The stringiness of the aqueous solution is 0-20mm.