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56results about How to "Drip suppression" patented technology

Benzene imide structure based high-temperature self-crosslinking copolyester with effects of flame retardancy, smoke suppression and melt drop resistance and preparation method of copolyester

ActiveCN108359084APreserve thermoplastic processabilityIncrease melt viscosityStructural unitStructure based
The invention discloses a benzene imide structure based high-temperature self-crosslinking copolyester with effects of flame retardancy, smoke suppression and melt drop resistance. Copolyester is prepared from structural units represented by I, II and III or structural units represented by I, II and IV through random copolymerization, wherein the characteristic viscosity [eta] of copolyester is 0.41-1.12 dL / g, and the limit oxygen index is 24.2%-38.7%; the vertical combustion class is in a range from V-2 to V-0; the p-HRR (peak of heat release rate) in a cone calorimetry test is reduced by 7.1%-72.1% as compared with that of pure PET, and total smoke release is decreased by 2.0%-59.2% as compared with that of pure PET. The invention further discloses a preparation method of copolyester. Ahigh-temperature self-crosslinking group introduced in the preparation process is a benzene imide group, and prepared copolyeste cannot be subjected to crosslinking during processing and polymerization, so that thermoplastic processability of polyester is retained; meanwhile, due to the tackifying effect and high charring property brought by the self-crosslinking action at high temperature or during combustion, prepared copolyester has excellent flame retardancy, smoke suppression and melt drop resistance effects.
Owner:SICHUAN UNIV

Substrate processing apparatus, control method therefor, and computer readable storage medium

ActiveCN108400103ASuppression of defects in the process of discharging the treatment liquidDrip suppressionSemiconductor/solid-state device manufacturingSpray nozzleEngineering
The invention provides a substrate processing apparatus, a control method therefor, and a computer readable storage medium, which suppress occurrence of defects when discharging a treatment liquid from a nozzle to a substrate via a relatively simple structure. The substrate processing apparatus includes a nozzle, a piping portion, a valve, an activating portion, a control portion, and a detectingportion. The nozzle discharges the treatment liquid to the substrate. The piping portion forms a flow path of the treatment liquid connected to the nozzle. The valve is provided at a midway portion ofthe piping portion, and changes the existence state of the treatment liquid in the piping portion and the nozzle. The activating portion imparts a driving force to the valve to operate the valve. Thecontrol portion operates the valve through the activating portion by outputting a trigger signal. The detecting portion detects a specific state. The control portion calculates the amount of change in the setting relating to the operating speed of the valve operation caused by the activating portion based on the relationship between the actual operating time from the first timing when the triggersignal is output to the second timing when detecting portion detects the specific state and the reference operating time.
Owner:DAINIPPON SCREEN MTG CO LTD

Microporous polyolefin resin sheet production device and production method

The invention relates to a microporous polyolefin resin sheet production method. An object is to prevent the occurrence of sheet defects by preventing the dropping of a liquid of low-molecular-weight components in a polymer, diluents, and additives adhering to a rectifier disposed inside a decompression chamber in a production method for a microporous polyolefin resin sheet including discharging a solution including a mixture of a polyolefin resin and a diluent in a sheet shape from a mouthpiece to a cooling/hardening device and cooling the sheet while aspirating the air between the sheet and the cooling/hardening device with an aspiration chamber. Another object is to forcibly aspirate a liquid of low-molecular-weight components in a polymer, diluents, and additives adhering to the rectifier by, while using a production device for a microporous polyolefin resin sheet having a mouthpiece that discharges a liquid including a mixture of a polyolefin resin and a diluent in a sheet shape, a cooling/hardening device that cools the sheet discharged from the mouthpiece, and a decompression chamber that aspirates the air between the sheet and the cooling/hardening device, disposing a rectifier inside the decompression chamber, aspirating each of the inside of the decompression chamber and the inside of the rectifier, and keeping the pressure inside the rectifier lower than the pressure inside the decompression chamber.
Owner:TORAY IND INC

Amine catalyst composition for production of haloalkene foamed polyurethane

Provided is a catalyst composition which improves the storage stability of a liquid polyol blend for the production of a polyurethane foam, said blend containing a hydrohaloolefin as a foaming agent,and which starts a quick foaming reaction with a small addition amount. Also provided is a method for producing a polyurethane foam with use of a liquid polyol blend which contains this catalyst composition. The present invention uses a catalyst composition which contains: one or more alcohols selected from the group consisting of alcohols represented by general formula (1) (hereinafter referred to as the alcohols represented by general formula (1)) and alcohols represented by general formula (2) (hereinafter referred to as the alcohols represented by general formula (2)); and one or more tertiary amine compounds selected from the group consisting of hexamethyl triethylene tetramine, N, N, N'-trimethyl aminoethyl ethanolamine, N, N-dimethylamino ethoxy ethanol, N, N-dimethyl-N', N'-di(2- hydroxypropyl)propylene diamine, N, N, N'-trimethyl-N'-(2- hydroxyethyl)bis(2-aminoethyl) ether and N, N-dimethylamino ethyl-N'-methylamino ethyl-N"-methylamino isopropanol. (In general formula (1), R1represents an unsaturated hydrocarbon group containing at least one double bond and having 5-20 carbon atoms, a linear alkyl group having 6, 8, 10 or 12 carbon atoms or a branched alkyl group having12-24 carbon atoms.) (In general formula (2), m represents a number of 1-4.)
Owner:TOSOH CORP
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