60results about How to "Rapid swelling" patented technology

The invention provides a method for hydrolyzing seaweed. The method is as follows: fresh or water expanded seaweed is shattered; ethylenediamine tetracetic acid, potassium hydroxide or sodium hydroxide, ferrous sulfate, hydrogen peroxide and vitamin C are sequentially added while the seaweed is stirred; and after filtration, the filtrate is added with boric acid or borate, and finally seaweed hydrolysate can be obtained. The invention has simple preparation method and required equipment, seaweed polysaccharides can be fast degraded into micromolecules, and the activity of natural active substances of the seaweed can be maintained.

The invention belongs to the technical field of biomedicine and particularly relates to a medical multi-layer composite anti-adhesion membrane and a preparation method thereof. The multi-layer composite anti-adhesion membrane comprises a gel membrane, a single surface or double surfaces of the gel membrane is a water-soluble membrane or are water-soluble membranes. During preparation, the gel membrane can be prepared firstly, and then the water-soluble membrane or the water-soluble membranes is / are arranged on the single surface or the double surfaces of the gel membrane in a curtain coating manner; besides, the gel membrane and the water-soluble membrane or the water-soluble membranes can be prepared respectively firstly and then composited in a little-water environment. With the adoption of the multi-layer composite anti-adhesion membrane, on one hand, the anti-adhesion membrane can be bonded to tissue and organs through slow dissolution of the water-soluble membrane or the water-soluble membranes, and suture fixing operation of the anti-adhesion membrane during an operation is avoided; on the other hand, due to stable existence of the gel membrane, the anti-adhesion membrane can still have effects of a mechanical support and a physical barrier after being implanted in a body for a longer time, and postoperative adhesion is inhibited. The multi-layer composite anti-adhesion membrane has the wide application value in postoperative adhesion prevention for parts such as hearts, abdominal cavities, pelvic cavities and the like.

A water swelling water stop material comprised of a water permeable sheet, characterized in that water absorbent resin particles (A) are enclosed therein so that the water stop material upon water absorption and swelling has the configuration of polyhedron (B). The water stop material is thin to thereby facilitate storage thereof and is lightweight to thereby render carry thereof easy. The polyhedron (B) is so constructed that upon water absorption and swelling, at least two faces are planar. When the polyhedron (B) is formed into a rectangular solid or cube, even if multiple polyhedrons (B) are piled one upon another, they are stable and are resistant to collapse even under the influence of a large amount of water. When polyhedrons (B) of the same configuration are piled one upon another, any gaps between water stop materials are slight so as to inhibit water leakage through the gaps. Moreover, when the polyhedron (B) has a cavity, the cavity can be packed with a heavy solid material or can have a stake hammered therein so that the water stop material can stably resist violent water streams. Therefore, this water swelling water stop material can be appropriately used as a water stop material for rainwater penetration prevention in order to protect banks, buildings, houses, etc. in the event of flood, heavy rain, etc.

The invention discloses a neutral cleaning agent for a range hood and a preparation method thereof, and relates to the technical field of cleaning agent preparation. The neutral cleaning agent for therange hood comprises the following components in percentage by weight: 2-8% of a nonionic penetrating agent, 1-5% of polyethoxylated fatty alcohol, 1-5% of a nonionic surfactant, 2-5% of a solvent, 0.2-0.5% of sodium chloride, 0.01-0.02% of a defoaming agent, 0.1-0.3% of essence, 0.01-0.03% of a preservative, 0.01-0.03% of sodium hydroxide and the balance of softened water, wherein the nonionic penetrating agent comprises a KOC type efficient low-foam nonionic penetrating agent, the polyethoxylated fatty alcohol comprises AEO5-80, and the nonionic surfactant comprises an HSN38 type strippingagent. The neutral cleaning agent for the range hood has the advantages of mildness, no stimulation, capability of protecting the range hood and two hands from being corroded during cleaning, short effect taking time, high decontamination rate and long peculiar smell removal time.