75 results about "PENTAERYTHRITYL TETRASTEARATE" patented technology

The invention discloses a method for preparing pentaerythritol stearate from hydrogenated oil.The method includes the following steps that S1, a sodium hydroxide solution is added to hydrogenated palm oil, microwave processing is conducted, a reaction is conducted under stirring, and saponified matter is obtained; S2, a sulfuric acid solution is added to the saponified matter till the pH value is 1 to 2, the material is transferred into a distillation tower, and stearic acid is obtained after distillation is completed; S3, stearic acid, pentaerythritol and a catalyst are put, the material is heated, negative pressure is controlled, and a reaction is conducted; S4, then the vacuum degree is increased to 0.07-0.09 mpa, the material is heated to 155-165 DEG C, and a reaction is conducted for 130-150 min under heat preservation at constant pressure; S5, cooling is conducted after an esterification condensation reaction is completed, kieselguhr is added for decoloration and deordorization, the material enters a plate-and-frame filter press, filter cakes are removed, filtrate is taken and subjected to powder spraying, bead spraying and slicing, and packaging and storage are conducted.The method is stable, reliable, high in yield and capable of achieving industrial production, and the prepared pentaerythrityl tetrastearate product is good in whiteness, low in acid value and high in purity.

The invention discloses a high-strength two-way drawn polypropylene heat sealing film which sequentially comprises an upper layer, a middle layer and a lower layer from top to bottom. The upper layer comprises, by weight, copolymer polypropylene, polyethylene glycol terephthalate, ethylene acrylate copolymer, butyl stearate and synthetic silica; the middle layer comprises, by weight, homopolymer polyethylene, vinyl acrylate copolymer, ethylene glycol distearate, pentaerythrityl tetrastearate, methyl methacrylate, methyl cellulose and titanium dioxide; the lower layer comprises, by weight, polyacrylic acid, ethylene acrylate copolymer, ethyl parahydroxybenzoate and naphthenic acid glycerol ester. The invention further discloses a preparation method of the high-strength two-way drawn polypropylene heat sealing film. The prepared two-way drawn polypropylene heat sealing film is high in strength and can meet market demands.

The invention discloses a smooth color master batch for a PTT film. The smooth color master batch comprises the following ingredients, by weight, 30%-80% of PTT resins, 2%-10% of antiblocking agent, 10%-30% of smooth agents, 0.1%-10% of pigments, 0.1%-1% of coupling agents, 0.5%-3% of dispersants, 5%-20% of PETG and 2%-10% of MBS. The antiblocking agent is lightweight synthetic silica with a particle size of 1-4 micrometers. The smooth agents are one or some selected from oleamide, erucamide, calcium stearate and pentaerythritol tetrastearate. The beneficial effects are that the smooth color master batch is applied in PTT film production, advantages of good impact resistance, excellent heat resistant stability, uniform coloring, good smooth effects, convenient usage, strong adaptability and the like are achieved, the PTT film performances and production environments are improved greatly, and the application effects are raised.

The invention discloses a modified special material for manufacturing a flame-retardant turnover box and a preparation method of the modified special material. The modified special material is prepared from the following raw materials according to a ratio in parts by weight: HDPP, PVC resin, polyisoprene, pentaerythrityl tetrastearate, polyisobutene, PP-g-ST, polytetrafluoroethylene, glass fibers, ethylene glycol butyl ether, anhydrous calcium chloride, ethylene glycol, dioctyl adipate, activated calcium carbonate, titanium iso-propylate, hydroxypropyl methyl cellulose, a toughening agent, triphenyl phosphate, trimethylolpropane, a coupling agent, epoxy fatty acid butyl ester and chlorinated paraffin. According to the modified special material disclosed by the invention, the modification is performed by adding auxiliary components, and the flame resistance of products is improved to a larger extent on the premises that the properties of other materials are not influenced, and the cost is not increased; the modified special material obtained by the preparation method is good in toughness, and resistant to impact and facilitates processing of the turnover box with good flame retardance and the added values of the products are increased. With the adoption of the method disclosed by the invention, not only are qualified finished products effectively prepared, but also the operation process is very simple, and the mass production is facilitated.

The invention discloses a method for preparing pentaerythritol stearate from hydrogenated oil.The method includes the following steps that S1, a sodium hydroxide solution is added to hydrogenated palm oil, microwave processing is conducted, a reaction is conducted under stirring, and saponified matter is obtained; S2, a sulfuric acid solution is added to the saponified matter till the pH value is 1 to 2, the material is transferred into a distillation tower, and stearic acid is obtained after distillation is completed; S3, stearic acid, pentaerythritol and a catalyst are put, the material is heated, negative pressure is controlled, and a reaction is conducted; S4, then the vacuum degree is increased to 0.07-0.09 mpa, the material is heated to 155-165 DEG C, and a reaction is conducted for 130-150 min under heat preservation at constant pressure; S5, cooling is conducted after an esterification condensation reaction is completed, kieselguhr is added for decoloration and deordorization, the material enters a plate-and-frame filter press, filter cakes are removed, filtrate is taken and subjected to powder spraying, bead spraying and slicing, and packaging and storage are conducted.The method is stable, reliable, high in yield and capable of achieving industrial production, and the prepared pentaerythrityl tetrastearate product is good in whiteness, low in acid value and high in purity.

The invention provides an anti-aging PC (polycarbonate) sun board and a preparation method thereof. The PC sun board is prepared from raw materials including PC, polyethylene, butadiene styrene rubber, polyethylene glycol, glass fiber, stearic acid, a plasticizer, a dispersant, a filling material, an antioxidant, a silane coupling agent and pentaerythritol tetrastearate. The preparation method comprises steps as follows: firstly, PC, polyethylene, the butadiene styrene rubber, polyethylene glycol, the glass fiber, stearic acid, the plasticizer, the dispersant, the filling material, the antioxidant, the silane coupling agent and pentaerythritol tetrastearate are added to a stirrer, heated and subjected to thermal insulation, then an obtained mixture is introduced to a double-screw extruder and subjected to melt blending extrusion, traction, granulation and injection molding and the anti-aging PC sun board is obtained. Polyethylene, the butadiene styrene rubber and PC are matched to serve as a matrix, the glass fiber is added, the prepared PC sun board has excellent anti-aging performance, and the color difference and the notch impact strength retention rate are relatively high after the PC sun board is aged for 400 h.

The present invention discloses toughened and anti-aging PBT powder, which comprises, by mass, 70-85% of PBT, 5-10% of MBS, 5-10% of glass fibers, 0.5-3% of a benzotriazole light absorbing agent, 0.1-1% of erucylamide, 0.1-1% of pentaerythrityl tetrastearate, and 0.1-0.5% of an antioxidant, wherein the glass fibers are the alkali-free short cut glass fibers with the surface treated by a silane coupling agent KH560. The toughened and anti-aging PBT powder of the present invention has beneficial effects of good impact resistance toughness, good tensile strength, good heat resistance, strong aging resistance, good appearance, easy processing, and low cost, and can be used in the fields of electronic appliances, vehicles, chemical industry, machinery and the like.