1511 results about "Tributyl citrate" patented technology

A barrier composition which is injection mouldable and able to be made into a transparent film or incorporated (by co-extrusion and / or lamination) into multi-layer film products, the composition on dry basis: a) from 45 to 90% by weight of a starch and / or a modified starch selected from starches modified by reaction with a hydroxyl alkyl group, an acetate or a dicarboxylic acid anhydride or a grafting polymer; b) from 4 to 12% by weight of a water soluble polymer selected from polyvinyl alcohol, polyvinylacetate, and copolymers of ethylene and vinylalcohol which have a melting point compatible with the molten state of the starch components c) from 5 to 45% by weight of a non-crystallising mixture of sorbitol and at least one other plasticizer selected from glycerol, maltitol, xylitol, mannitol, glycerol trioleate, epoxidised linseed or soybean oil, tributyl citrate, acetyl tri-ethyl citrate, glyceryl triacetate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate; polyethylene oxide or polyethylene glycol; d) from 0.3 to 2.5% by weight of a C12-22 fatty acid or salt; e) from 0.25% to 3% of an emulsifier system having a hydrophilic lipophilic balance value between 2 and 10. The barrier film may be co-injection moulded with polyethylene terephthalate (PET) or polylactic acid (PLA) for blow moulding into beverage bottles, with polyethylene (PE) or polypropylene (PP) or biodegradable polymers for high gas-barrier containers or closures, or may be co-extruded with polyethylene, polypropylene or polylactic acid for thin film packaging applications or for blow-moulded containers.

The invention discloses a nontoxic environment protection polyvinyl chloride sealing gel and a preparation method thereof. The gel is made of pvc paste resin, dioctyl phthalate, acetyl tri-n-butyl citrate, heavy calcium carbonate, calcium-zinc stabilizer, white foaming agent, titanium dioxide, dimethicone and rapeseed oil. Phthalic ester plasticizer is not comprised. The gel meets the requirements of the food safety, and corresponds with the RoHS instruction. The gel is a foot and environmental friendly sealing gel. The using amount of fillings is added. The production cost is lowered. The nontoxic and environmental friendly sealing gel has the advantages of low price, high temperature resistance, good sealing effect and convenient engagement.

The invention discloses dielectric paste for a metal aluminum substrate thick film circuit and a preparation method thereof. The invention aims to prepare the dielectric paste matched with a metal aluminum substrate. The dielectric paste is characterized in that SiO2, Na2O, B2O3, K2O, BaO, CaO, Co2O3, TiO2, P2O5, V2O5, Sb2O3 and Cr2O3 are combined to prepare microcrystalline glass powder; and the microcrystalline glass powder and an organic binder which consists of terpinol, butyl carbitol, butyl carbitol acetate, tirbutyl citrate, 1,4-butyrolactone, nitroncellulose, ethyecellulose, hydrogenated castor oil and lecithin are put in a vessel for stirring and rolling by a three-roll roller mill in a weight ratio of the microcrystalline glass powder to the organic binder of 70-90 parts: 30-10 parts so as to prepare the finished product dielectric paste. The dielectric paste is mainly used as the dielectric paste of the thick film circuit formed by being printed on the metal aluminum substrate.

A biodegradable injection mouldable polymer composition including on a dry weight basis from 45-85% w / w by weight of a starch and / or a modified high amylose starch, from 2-15% w / w by weight of a water soluble polymer preferably selected from polyvinyl alcohol, polyvinyl acetate and copolymers of ethylene and vinyl alcohol which have a melting point compatible with the molten state of the starch components, and from 5-45% w / w by weight of one or more polyol plasticizers having a molecular weight in the range of 50-6000, more preferably 50-2500, and still more preferably 100-400 and preferably selected from the group consisting of sorbitol, glycerol, maltitol, xylitol, mannitol, erythritol, polyglycerol, glycerol trioleate, tributyl citrate, acetyl tri-ethyl citrate, glyceryl triacetate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, polyethylene oxide, ethylene glycol, diethylene glycol or polyethylene glycol; more preferably glycerol, maltitol, sorbitol, erythritol and xylitol. The composition is preferably substantially soluble in water.

The invention discloses a medium temperature sintering type electro-conduction slurry with lead-free glass powder and a preparation method of the medium temperature sintering type electrocondution slurry. The preparation method is characterized by comprising the steps of preparing an organic carrier, preparing the lead-free glass powder, preparing silver powder and preparing the electro-conduction slurry. The electro-conduction slurry comprises, by mass, 0 to 80% of micron-scale spherical silver powder, 5% to 70% of micron-scale flake silver powder, 2% to 25% of the lead-free glass powder and 0 to 25% of the organic carrier. The lead-free glass powder comprises, by mass, 25% to 75% of Bi2O3, 20% to 60% of B2O3, 0 to 20% of ZnO, 0 to 20% of Sb2O3, 0 to 10% of Al2O3 and 0 to 8% of alkali metal oxide. The organic carrier comprises, by mass, 50% to 80% of terpilenol, 10% to 40% ofbutyl carbitol acetic ester, 0 to 10% of tributyl citrate, 3% to 10% of ethocel, 0 to 2% of hydrogenated castor oil and 0 to 3% of addition agent.

The tributyl citrate preparing process features using mesoporous molecular sieve as catalyst for the synthesis of tributyl citrate, filtering out the catalyst from the reacted product after reaction for reuse, and treating the filtrate through distillation, water washing, alkali washing, and re-distillation to obtain tributyl citrate. The catalyst has relatively high catalytic activity on the esterification of citric acid and n-butanol. The present invention has the advantages of high yield, cheap catalyst, small catalyst consumptlion, mild reaction condition, short reaction period, reusability of the catalyst, no environmental pollution, direct use of non-toxic reactant n-butanol as water entrainer, etc.

The invention discloses a low-cost biology base full degradation thin film and a preparation method thereof. The thin film is prepared from the following ingredients in parts by mass: 15 to 25 parts of polyglycollide, 25 to 35 parts of corn starch, 35 to 55 parts of poly(butyleneadipate-co-terephthalate), 5 parts of compatilizers, 3.75 to 12.25 parts of starch plasticizers, 0.5 to 0.7 part of citric acid, 0.75 to 1.25 parts of acetyl tributyl citrate, 0.3 to 0.5 part of maleic anhydride, 0.2 part of antioxidants 164 and 0.2 part of 2-(2'-hydroxyl-5'-methyl phenyl)benzotriazole. The low-cost biology base full degradation thin film provided by the invention has the advantages that the biology base content can reach 30 percent or higher; the cost is lower; the stretching intensity exceeds that of a conventional PE thin film; very important significance is realized on solving the problem of white pollution and promoting the popularization and the application of a full biodegrade material.