30results about How to "Less extractables" patented technology

The latex for coating tissue paper of drink filtering bag is prepared through emulsion polymerization in the presence of emulsifier and initiator. The monomer mixture for the latex includes: vinylidene chloride in 60-85 wt%, acrylate in 5-30 wt%, and unsaturated fatty acid in 5-10 wt%. The latex makes the coated tissue paper possess high wet strength, high water penetrating capacity, no toxicity, no smell, few leached matter and high performance / cost ratio, and is especially suitable for coating tissue paper for coffee, tea and other drink extracting bag.

The invention relates to a tube coiling machine and tubular type membrane producing equipment formed by the tube coiling machine. The tube coiling machine comprises a double-layer machine frame, a tube coiling mechanism, a non-woven fabric feeding mechanism and an ultrasonic welding machine, the tube coiling mechanism comprises an electrical motor which is arranged at the lower layer of the machine frame and a speed reducer which is mechanically connected with the tube coiling mechanism, the speed reducer is mechanically connected with a main driving roller which is arranged at the upper layer of the machine frame, the main driving roller is connected with an auxiliary driving roller which is arranged at the upper layer of the machine frame via a conveyor belt, a support bar is arranged between the main driving roller and the auxiliary driving roller via a small bracket which is fixedly arranged on the upper layer of the machine frame, and the conveyer belt coils around the support bar for one circuit before passing through; the non-woven fabric feeding mechanism is arranged at one side of the machine frame and the non-woven fabric feed mechanism forms an angle of 45 to 75 degreeswith the axial line of the support bar of the tube coiling mechanism; the ultrasonic welding machine mainly comprises an ultrasonic generator which is arranged at the rear part of the support bar on the upper layer of the machine frame. The tubular type membrane production equipment takes the tube coiling machine of the invention as the main body, a delivering gear is arranged at one side of the feeding mechanism of the tube coiling machine, and a coagulating tank is arranged at one side of the output part of the tube coiling machine.

The invention discloses extruded cereal particles in a liquid particle mixed sterilization product and a preparation method of the extruded cereal particles. The extruded cereal particles are prepared by extruding the following raw materials in parts by weight through a screw rod extruder: 100 parts of cereals, 1.6-50 parts of hydrophilic colloid and 0-25 parts of a food ingredient, wherein the hydrophilic colloid comprises 0.4-1.4 parts of xanthan gum, 1-2.5 parts of sodium carboxymethylcellulose, 0.2-1.2 parts of gellan gum and 0-44.9 parts of selective hydrophilic colloid; and the selective hydrophilic colloid is one or any match of more of artamisia sphaerocephala krasch gum, sodium alginate, curdlan gum, fenugreek gum, locust bean gum, guar gum, gelatin, carrageenan, Arabic gum, konjac glucomannan, sodium polyacrylate, propylene glycol alginate, modified starch and plant protein powder. The extruded cereal particles can bear sterilization, and are not scattered and excessively gelatinized after being immersed for a long time; and the production period is short and the production cost is low, and the food ingredient can be added in a relatively wide range.

The object of the present invention is to provide a polyurethane resin-forming composition for a sealing material of a membrane module, which is excellent in curability and injection moldability, can be formed with low haze, and has excellent smoothness of a cut surface when used as a sealing material of a membrane module. A polyurethane resin with less eluted matter, the polyurethane resin-forming composition for a membrane module sealing material of the present invention is composed of a main agent containing an organic polyisocyanate component (A) and a curing agent containing a polyol component (B), and is characterized in that , the main agent and / or the curing agent contain a bicyclic amidine salt (C) represented by the general formula (1); the polyurethane resin-forming composition for the sealing material of the membrane module of the present invention is characterized in that, by It consists of a main ingredient composed of an organic polyisocyanate component (A), a curing agent composed of a polyol component (B), and a bicyclic amidinium salt (C) represented by the general formula (1).

The invention discloses a heparin cap transparent rubber pad for indwelling needles. ~1.5 servings. The invention also discloses a production method of the heparin cap transparent rubber pad for indwelling needles, which solves the problem that the transparent rubber pad for indwelling needles currently used is not high in transparency, and the chemical cleanliness needs to be improved, especially the pH change value and ultraviolet absorbance of the product are easy For the problem of exceeding the standard, the vulcanization flash is controlled at 0.03‑‑0.10 mm, and the transparent rubber pad of the vulcanized heparin cap can be directly frozen to remove the edge. Vulcanized release of transparent rubber mats. The heparin cap transparent rubber pad for indwelling needles of the present invention can withstand multiple punctures, has excellent cleaning performance, has excellent compatibility with the sealing solution of the heparin cap, and has little extractables.

Provided is a medical device which has a reduced non-specific absorption amount, which has excellent durability of said reduction, and which has reduced eluates from the surface layer. The medical device has a device substrate, and a surface layer positioned on at least part of the surface of the device substrate that comes into contact with water. At least part of the surface of the device substrate is made from an inorganic material, and the surface layer is made from a cured product of a compound having a biocompatible group and an alkoxy silyl group. The content of the biocompatible groupin the compound falls within the range of 25 to 83% by mass, inclusive, and the content of the alkoxy silyl group falls within the range of 2 to 70% by mass, inclusive.

The invention provides an extraction method suitable for water-soluble heat-sensitive ingredients of traditional Chinese medicines. The extraction method suitable for water-soluble heat-sensitive ingredients of traditional Chinese medicines comprises the following step: adding water at the temperature of 95-100 DEG C in medicinal materials to soak and extract the medicinal materials, wherein soaking time lasts for 10-30 min, the extraction times are 3-5 times, and the environment temperature is 20-30 DEG C. In the provided extraction method, boiling water at the temperature of 95-100 DEG C isadopted to repeatedly soak and extract the traditional Chinese medicinal materials, by strictly control over the soaking time and the extraction times, it ensures that effective constituents are leached fully, and loss of the heat-sensitive ingredients is reduced. The used boiling water can further kill microorganisms in water and an extracting solution, the storage time of the extracting solutionis prolonged, the risks of unqualified bacterial inspection of finished products are reduced, meanwhile, soluble substances of water-soluble impurities in the medicinal materials are further reduced,the content of the effective constituents is increased, and the dosage of a patient is reduced.

A solidifying agent for the used sludge of drilling well is proportionally prepared from powdered thioaluminate cement clinker, semi-hydrated gypsum powder, calcium lime, and polyacrylamide through grinding. Its advantages are short solidifying time, low cost and no secondary pollution.

Disclosed is a method for producing an anion exchange resin comprising the steps (1-a)-(1-e) below, wherein residual impurities and formation of decomposed products are suppressed and dissolution of amaterial is also suppressed. (1-a) a step for obtaining a crosslinked copolymer by copolymerizing a monovinyl aromatic monomer and a crosslinkable aromatic monomer (1-b) a step for setting the content of a specific dissolvable compound to 400 ¢mu!g or less per 1 g of the crosslinked copolymer (1-c) a step for introducing 80% by mole or less of a haloalkyl group relative to the monovinyl aromaticmonomer by haloalkylating the crosslinked copolymer (1-d) a step for removing the specific dissolvable compound from the haloalkylated crosslinked copolymer (1-e) a step for reacting the haloalkylatedcrosslinked copolymer with an amine compound. The present invention also relates to a method of producing an anion exchange resin, an cation exchange resin and a method of producing an cation exchange resin, a mixed bed resin and ultra-pure water for cleaning electronic device and / or material.

The invention relates to the technical field of corn steamed bread, in particular to corn strengthening steamed bread and a preparation method thereof. In the invention, the modified corn meal is used as major ingredient, and the accessories including wheat gluten, sodium alginate, xanthan gum, composite phosphate, sodium polyacrylate and table salt are added; the method comprises the following steps of: (1) preparation of the major ingredient; (2) preparation of the accessories; (3) mixing the materials and adding water; (4) kneading; (5) forming; (6) fermentation; (7) curing; and (8) cooling to obtain the corn strengthening steamed bread. The corn strengthening steamed bread is characterized in that the content of corn meal in the steamed bread reaches about 70%. The product has rich nutrition and is digestible; and moreover, the product has delicate and smooth mouthfeel and high elasticity, and is tasty and not stuck on teeth in chewing.

The invention relates to the treatment of waste drilling mud in oil fields in the technical field of environmental protection. The technical scheme of the present invention comprises two major parts. 1. High-efficiency solidification treatment agent for waste mud in the oil area: one part is composed of 1-3% ion precipitant, 1-2% gel breaker, and 2-8% adsorbent, which account for the weight of waste mud; the other part is composed of sedimentation It is composed of 5-20% of sulfoaluminate hardening agent, 2-4% of loosening agent and 2-8% of gypsum powder in the percentage of solid weight. 2. The treatment process of using the high-efficiency solidification treatment agent for waste mud in the oil area: first, mix the waste mud with the mixed ion precipitant and gel breaker in proportion and mix them evenly, and then add the adsorbent to the waste water after standing still for 1-3 hours Finally, stir, and then mix the separated settled solid with the mixed sulphoaluminate hardener, loosening agent, and gypsum powder in proportion and mix evenly, and then stop for 3-7 days until it is qualified. The invention has good water stability, the cured product meets the requirements of the planting soil, the raw materials are easy to purchase, the use is convenient, and the curing effect is good.