31results about How to "Suitable for production process" patented technology

The invention provides a refrigerator with a double-layer door structure. The refrigerator comprises a refrigerator body, an inner-layer door, an outer-layer door, a lighting device, a lighting switchand a transition piece, wherein a storage compartment is defined in the refrigerator body, the inner-layer door is connected to the refrigerator body in an open and closed mode, a through hole is formed in the position, close to the edge, of the inner-layer door, the outer-layer door is connected to the outer side of the inner-layer door in an open and closed mode, the inner-layer door and the outer-layer door can be opened and closed independently or together, the lighting device is used for lighting the storage compartment, the lighting switch is arranged on the part, making contact with the inner-layer door, of the refrigerator body, the contact point position of the lighting switch is opposite to the through hole, the transition piece is integrally arranged in the through hole in a penetrating mode, and the length of the transition piece is larger than the length of the through hole, so that the two ends of the transition piece can abut against contact points of the outer-layer door and the lighting switch correspondingly. According to the refrigerator with the double-layer door structure, the lighting switch is closed or opened by using a mechanical structure, the structure is simple, switch control components are reduced, and the control program of a circuit is simplified.

The invention provides a preparation method of a latex product uneasy to bloom and adhere. The preparation method comprises the following steps: preparing a natural latex primary product, carrying outhypochlorite treatment, carrying out acetic acid treatment, carrying out alkali washing, carrying out water washing and drying. According to the preparation method provided by the invention, an anti-blooming agent is not used and the concentrations of used hypochlorite and acetic acid solution are relatively low; a processing technology is simple and the blooming and adhering problems can be completely solved; the hypochlorite and the acetic acid solution are environment-friendly reagents and are easily industrially produced, so that the problems in a latex industry that various compound agents are matched to generate a blooming phenomenon and the product is easy to adhere are radically solved and the preparation method has important practical significance.

The invention relates to electroluminescent devices comprising materials with a wide bandgap and their use.

The invention discloses a fused bisindole derivative and a preparation method thereof. The preparation method provided by the invention comprises the following steps: adding an indole compound, sodiumnitrite and potassium persulfate into a solvent for reaction; and then, adding triethyl phosphite to obtain a product fused bisindole derivative. In the invention, the indole compound is used as a starting material; the raw materials are easily available and diversified; the obtained target product can be used directly and can also be used for other further reactions; sodium nitrite is used as anitrosating agent in the invention, is safe to use and cheap, reduces pollution and production costs, and meets requirements of green production; the preparation method disclosed in the invention is mild in reaction condition, simple in reaction operation and post-treatment process, stable and controllable in reaction process, high in product yield, and suitable for mass production.