4554 results about "Phthalic acid" patented technology

Disclosed are aromatic polyester polyols, polyol based resin blends, and rigid closed-cell polyisocyanate-based foams made using the polyol based resin blends. The resin blends generally comprise:(a) an aromatic polyester polyol reaction product formed by inter-esterification of a phthalic acid based material; a hydroxylated material having a functionality of at least 2; and a hydrophobic material; and(b) a C4-C7 hydrocarbon blowing agent. Also disclosed is a method for preparing rigid closed-cell polyisocyanate-based foams comprising reacting a polyisocyanate and a polyol based resin blend.

A biosensor that is highly responsive and capable of rapid and highly sensitive quantification of a specific component contained in a sample is provided. The biosensor of this invention comprises: an electrically insulating base plate; an electrode system comprising a working electrode and a counter electrode disposed on the base plate; and a reagent system comprising an oxidoreductase which catalyzes the oxidation reaction of glucose, gluconolactonase and a buffer. The buffer is selected from the group consisting of phthalic acid and its salts, maleic acid and its salts, succinic acid and its salts, phospholic acid and its salts, acetic acid and its salts, boric acid and its salts, citric acid and its salts, glycine, tris(hydroxymethyl)aminomethane, piperazine-N,N'-bis(2-ethane sulfonic acid) and the like.

The present invention is related with bioplasticizers or primary oleochemical plasticizers and the improved process for obtaining thereof. It refers primarily to epoxydized oleochemical plasticizers produced from vegetable oils, as substitute of traditional petrochemical plasticizers. The process starts with the epoxydized product of natural oils, such as sunflower, linseed, Jatropha curcas, soybean, etc., which are transesterified with an alcohol such as ethylic or methylic, in the presence of a catalyst such as sodium methoxide or sodium hydroxide in order to produce an alkylic esters mixture of the fatty acids that were present in the oil or oil mixture used as raw material in the epoxydized oil production. When the plasticizer obtained by the process already mentioned is used for the formulation of moldable poly(vinyl chloride), PVC, resins; the resulting plastic films get adequate hardness, static and dynamic thermal stability, and plasticizer extractability by solvents, such as n-hexane, gasoline and oil. Besides, when the PVC resin is formulated with a phthalic or terephthalic plasticizers mixture and the bioplasticizer, the bioplasticizer presents a full range solubility and or compatibility with the remainder of the resin compounds. The oxyrane chemical ring of the bioplasticizer is an excellent chemical neutralizer of the HCL that might be formed from the PVC, due to the action or interference of thermal or UV radiation.

The invention discloses a bubbling column oxidizing reaction device to produce p-phthalic acid, including a uniform straight-cylindrical bubbling column, where there are gas processing segment, free space segment and three phase reaction segment in turn form top to bottom in the bubbling column, there are liquid distributor and filling or liquor-holding board installed in the gas processing segment, there is a gas distributor installed at the bottom of the three phase reaction segment, there is a raw material feeding pipe set at 1/4-1/2 of the height of reaction segment, there is a discharge pipe set at the bottom of the bubbling column, there is a tail-gas pipe and a liquor condensate reflux pipe on the top of the bubbling column, the inlet of the condenser is linked with the tail-gas pipe, the gas outlet is linked with the follow-up tail-gas processing unit, the liquid outlet of the condenser is linked with raw material feeding pipe, liquor condensate reflux pipe and follow-up dehydration tower. It is applied to the process of preparing p-phthalic acid by high temperature oxidization.

A polyester polyol prepared from a composition including a phthalic acid based material containing more than 10% by weight of ortho-phahalic or derivatives thereof, an aliphatic dicarboxylic acid (e.g., dodecanedioic acid), and a polyol (e.g., a glycol). A polyurethane adhesive, such as a polyurethane reactive hot-melt adhesive, is made using the polyester polyol, which exhibits improved initial bonding strength, shortened setting time, and ability to bond to low surface energy substrates such as ABS. The methods to prepare the polyester polyol and the polyurethane adhesive, and the method to use them are also disclosed.

The invention relates to probiotic microcapsules as well as a preparation method and application thereof. The probiotic microcapsules comprise a core material and a wall material, wherein the core material is probiotics; the outer layer of the wall material is coated with chitosan; the wall material is prepared from an aqueous solution containing a natural polymer material and a freeze-drying protection agent; the freeze-drying protection agent comprises one or more of glucose, fructose, sucrose, lactose, trehalose, soluble starch, glycerin, mannitol, Arabic gum, dextran 40 and skim milk; the natural polymer material comprises one or more of gellan gum, xanthan gum, k-carrageenan, sodium alginate, cellulose acetate phthalate or gelatin; in the aqueous solution, the volume fraction of the freeze-drying protection agent is 4.0%-20.0% and the volume fraction of the polymer material is 0.5%-5.0%. The probiotic microcapsules can keep excellent acid resistance and storage stability before and after being freeze-dried.

A hot melt adhesive composition comprising: (a) a functional copolymer obtained from copolymerization of ethylene and a comonomer selected from maleic anhydride, citraconic anhydride, itaconic anhydride, tetrahydrophthalic anhydride, maleic acid, citraconic acid, itaconic acid, fumaric acid, tetrahydrophthalic acid, the corresponding salts, monoesters and diesters of these acids, and mixtures of any of these, wherein the functional copolymer is present in an amount from about 5 to about 95 weight % of the combined total amount of (a) and (b); and (b) at least one ethylene copolymer obtained from copolymerization of ethylene with a polar monomer wherein said polar comonomer is present in the copolymer in an amount of from 8 to 40 weight %, wherein said ethylene copolymer is selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/alkyl (meth)acrylate/carbon monoxide terpolymers, in an amount from about 5 to about 95 weight % of the combined total amount of (a) and (b); wherein the composition has a melt index of 100 grams/10 minutes or higher. Articles comprising and process using the hot melt adhesive are also disclosed.

The invention requests to protect non-cured asphalt mastic comprising the following components in percentage by weight: 35-55 asphalt, 15-30 naphthenic oil, 3-10 polymer modifying agent, 55-20 gelatin powder, 3-10 diisononyl phthalate and 10-20 tackifying resin. The non-cured asphalt mastic can be independently used or can be used with the matched coil to form a waterproof system and can effectively solve the problem of water leakage caused by the crack of a waterproof layer due to the deformation of a base layer.

There is provided an aqueous dispersion for CMP with an excellent balance between chemical etching and mechanical polishing performance. The aqueous dispersion for CMP of the invention is characterized by comprising an abrasive, water and a heteropolyacid. Another aqueous dispersion for CMP according to the invention is characterized by comprising an abrasive, water, a heteropolyacid and an organic acid. Yet another aqueous dispersion for CMP according to the invention is characterized by comprising colloidal silica with a primary particle size of 5-100 nm, water and a heteropolyacid. Preferred for the heteropolyacid is at least one type selected from among silicomolybdic acid, phosphorotungstic acid, silicotungstic acid, phosphoromolybdic acid and silicotungstomolybdic acid. Preferred for the organic acid is at least one selected from among oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, phthalic acid, malic acid, tartaric acid and citric acid.

The present invention provides a method for polishing silica and silicon nitride on a semiconductor wafer comprising the steps of planarizing the silica with a first aqueous composition comprising by weight percent 0.01 to 5 carboxylic acid polymer, 0.02 to 6 abrasive, 0.01 to 10 polyvinylpyrrolidone, 0 to 5 cationic compound, 0 to 1 phthalic acid and salts, 0 to 5 zwitterionic compound and balance water, wherein the polyvinylpyrrolidone has an average molecular weight between 100 grams/mole to 1,000,000 grams/mole. The method further provides detecting an endpoint to the planarization, and clearing the silica with a second aqueous composition comprising by weight percent 0.001 to 1 quaternary ammonium compound, 0.001 to 1 phthalic acid and salts thereof, 0.01 to 5 carboxylic acid polymer, 0.01 to 5 abrasive and balance water.

Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.

The invention relates to the field of a formula for a sole material, especially to an anti-skid sole material. The anti-skid sole material comprises, by mass, 30 to 40 parts of butadiene rubber, 10 to 20 parts of butadiene-acrylonitrile rubber, 5 to 8 parts of white carbon black, 1 to 2 parts of magnesium oxide, 3 to 4 parts of stearic acid, 2 to 5 parts of polyethylene glycol, 1 to 2 parts of zinc oxide, 1 to 2 parts of machine oil, 5 to 7 parts of dibutyl phthalate, 0.5 to 1.3 parts of an antioxidant and 0.8 to 2.4 parts of an activator. The anti-skid sole material has a wet antiskid coefficient of 0.8 and a wet antiskid coefficient of 0.6; and the antiskid performance of the sole material is improved, so safety in usage of the sole material is guaranteed.

The present invention relates to a binder resin composition for an electrode, including a polyamic acid and a solvent, wherein the polyamic acid is (i) a polyamic acid which includes a tetracarboxylic acid component including 10 to 100 mol % of 4,4′-oxydiphthalic acid and 90 to 0 mol % of 3,3′,4,4′-biphenyltetracarboxylic acid and/or pyromellitic acid and a diamine component including an aromatic diamine having 1 to 4 aromatic rings, (ii) a polyamic acid which includes a tetracarboxylic acid component including 3,3′,4,4′-biphenyltetracarboxylic acid dianhydride and a diamine component including 10 to 90 mol % of p-phenylene diamine and 90 to 10 mol % of 4,4′-diaminodiphenyl ether, or (iii) a polyamic acid which includes a tetracarboxylic acid component including 3,3′,4,4′-biphenyltetracarboxylic acid dianhydride and a diamine component including 40 mol % or more of a bis[4-(4-aminophenoxy)phenyl] compound.

The invention discloses a temperature-resistant, corrosion-resistant and high-adhesion adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The temperature-resistant, corrosion-resistant and high-adhesion adhesive consists of two components, i. e., an adhesive A and an adhesive B, in the weight ratio of 100:1-10, wherein the adhesive A consists of chemical plasticizing vinyl ester resin, a polymerization inhibitor, a low shrinkage agent, a free radical curing solvent, gas-phase silicon dioxide, inorganic filler, a coupling agent, a defoaming agent, color paste or paint, a promoter and a promotion additive; and the adhesive B consists of phthalic ester, peroxide and inertial powder filler. The adhesive provided by the invention has the performance of heat resistance, corrosion resistance, penetration resistance, adhesion, positioning, impact resistance and the like, can be formed into different types at normal temperature, and medium and high temperature, is easy and convenient to operate, can bring the unique advantage of the adhesive into full play on some occasions requiring to paying attention to corrosion resistance, adhesion, heat resistance and the like, and is suitable for mutual adhesion among a continuous cellulose material, a concrete material, a metal material, stone, FRP (Fiber Reinforce Plastic), thermoplastic plastic and the like.

The invention discloses a low-melting point and transparent PET (polyethylene terephthalate) copolyester, its preparation method and application. The PET copolyester comprises, by mass: 60-84% of PET, 10%-30% of a unit derived from isophthalic acid, 5%-29% of a crystallization adjusting agent, and 0.03-2% of a branching agent. According to the preparation method, in a synthesis process of PET, based on p-phthalic acid (PTA) and ethylene glycol (EG), the unit derived from isophthalic acid, the crystallization adjusting agent and the branching agent are added to undergo a chemical reaction together, thus obtaining the low-melting point and transparent PET copolyester. The PET copolyester provided by the invention has an intrinsic viscosity greater than 0.9dL/g and a melting point lower than 230DEG C, can be solidified into an amorphous state from a molten state during injection molding, and has good transparency as well as further improved processing performance.

The invention relates to a kind of recycling method of tere phthalic acid (TPA) oxidizing residue. The invention uses the processes such as twice methyl ester reaction, rectification for separating, recrystallization for refining, interesterification reaction, and so on, to recycle tere phthalic acid (TPA), M-phthalic acid, and benzoic acid in petroleum chemical industry production residue. The invention solves problems such as low recycling ratio and more impurity of the product and so on in existing technique. The method is mainly used in recycling of tere phthalic acid (TPA) oxidizing residue.

The invention relates to an engine coolant, which comprises the following compositions in portion by weight: 100 portions of glycol, 60 to 160 portions of deionized water, 1.0 to 1.6 portion of sodium benzoate, 1.0 to 1.4 portion of sodium tetraborate, 0.1 to 0.5 portion of sodium nitrate, 0.5 to 0.9 portion of phthalic acid, 0.3 to 0.6 portion of sodium silicate, 0.03 to 0.06 portion of silicate stabilizer, 0.3 to 0.4 portion of sodium hydroxide, 0.1 to 0.3 portion of pyrrodiazole, 0.01 to 0.06 portion of defoaming agent and 0.005 to 0.02 portion of coloring agent; the engine coolant is characterized in that: the coolant does not contain molybdate, amine, nitrite, phosphate and other substances which are harmful to the environment and human body and has excellent anticorrosive and protective function on red copper, brass, steel, cast iron, soldering tin, cast aluminum and other metals of a cooling system and magnesium alloy adopted in an engine; and the coolant has strong anti-hard water capacity and low cost, meets the requirement of SH/T0521-1999 standard and is applicable to industrialized production.