52results about How to "Effective product quality control" patented technology

The invention discloses a preparation technology of high-purity flomoxef sodium. The preparation technology includes following steps: on the basis of a flomoxef intermediate, performing an acidifying reaction to obtain a reaction liquid; performing a water washing process, an extraction process, an aseptic filtration process and the like to the reaction liquid; and performing a solventing-out crystallization step through a one-step crystallization process to obtain a flomoxef sodium product with a purity being higher than 99.90%, wherein key points in the solventing-out crystallization step are selection and proportion of a solventing agent and dropwise addition of a salifying agent and the solventing agent at the same time with crystal growing. The preparation technology overcomes problems which are difficult to control during the solventing-out crystallization step of the flomoxef sodium. The flomoxef sodium is prepared in one step with the flomoxef intermediate as a raw material and the purity of the product of the flomoxef sodium reaches higher than 99.90% just through one crystallization step, which is cannot be achieved through a freeze-drying method or a common solventing-out crystallization process in the prior art. Quality of the product is in conformity with or even exceeds a standard in japanese pharmacopoeia JP16. The preparation technology has a more wide application prospect.

The invention discloses a melicitrin organic composite fertilizer with formula as: one or the mixture of melicitrin oil meal, melicitrin oil, melia or toosendanin oil meal, soybean oil meal, peanut oil meal, cottonseed oil meal, tea-seed oil meal, colza oil meal, and castor oil meal; bentonite, and water. Wherein, mixing the breaked oil meal, adding melicitrin oil, bentonite, and water; granulating with the mixed material in extruder; packaging. This invention is simple, can obtain organic fertilizer with well effect fit to green nuisanceless agriculture, improves the soil, and also has some pest control function.

The invention belongs to the field of heat-exchange devices, and particularly relates to a baffling assembly. The baffling assembly consists of a baffling plate and two side plates, wherein the baffling plate is formed by welding of two corrugated plates in a crest-to-crest manner; turned edges are arranged on four edges of each corrugated plate; the two side plates are welded with the turned edges on left and right sides of the two corrugated plates in the baffling plate; the side plates are perpendicular to the baffling plate; a bayonet is formed by the turned edges on back sides of the two corrugated plates. The invention further relates to a welded plate-type heat exchanger. The welded plate-type heat exchanger comprises a frame, a press plate, a heat-exchange core and the baffling assembly, wherein the two side plates in the baffling assembly are mounted on inner walls of the frame in parallel; the bayonet formed by the turned edges on the back sides of the two corrugated plates is clamped on a plate-side runner in the middle of the heat-exchange core; the turned edges on front sides of the two corrugated plates are fit with the press plate. By the aid of the baffling assembly, the strength of the baffling plate can be enhanced, deformation caused by fluid scouring can be prevented, and the baffling assembly is convenient to assemble; the welded plate-type heat exchanger provided with the baffling assembly also has the technical effects.

A printable transfer film for generating pattern on fabric or leather is composed of film as carrier, parting layer, thermo-fusible adhesive layer, and printable layer. Its preparing process and a method for generating pattern on the object are also disclosed.