47 results about "Hexahydrophthalic acid" patented technology

Compositions comprising hexahydrophthalate (HHPA) metal salts may be useful as nucleating agents in polyolefins. Masterbatch compositions containing such salts and with additives may be useful in reducing haze and improving properties of manufactured polyolefin articles or film.

Compositions comprising hexahydrophthalate (HHPA) metal salts may be useful as nucleating agents in polyolefins. Masterbatch compositions containing such salts and silica and/or hydrotalcite are particularly useful in reducing haze and improving properties of manufactured polyolefin articles or film. Such compositions may be dispersed effectively and efficiently into resin during manufacturing operations in the form of a masterbatch, thereby providing excellent polymer crystallization temperatures, improved polymer physical properties, improved dimensional stability, and improved transparency.

Specific methods of inducing high nucleation rates in thermoplastics, such as polyolefins, and particularly, though not necessarily, polypropylenes, through the introduction of two different compounds that are substantially soluble within the target molten thermoplastic resin (such as, as one non-limiting example, an added compound including at least one acid group and an added organic salt) are provided. Such introduced components react to form a nucleating agent in situ within such a target molten thermoplastic resin which is then allowed to cool. Preferably, one compound is an acid, preferably bicyclic (i.e., two cyclic systems sharing at least three carbon atoms) or monocycloaliphatic (i.e., a single, saturated ring system) in nature, such as, without limitation, bicyclo[2.2.1]heptane dicarboxylic acid or hexahydrophthalic acid, and the other compound is an organic salt, such as a carboxylate, sulfonate, phosphate, oxalate, and the like, and more preferably selected from the group consisting of metal C8-C22 esters. Such a production method thus provides a manner of generating in Situ the desired nucleating agent through reaction of such soluble compounds. Kits (e.g., masterbatch methods, for example) comprising such components for easy introduction within target molten polyolefin resins are also contemplated within this invention.

Compounds and compositions comprising specific metal salts of hexahydrophthalic acid (HHPA) in order to provide highly desirable properties within thermoplastic articles are provided. The inventive HHPA derivatives are useful as nucleating and/or clarifying agents for such thermoplastics, are practical and easy to handle. Such compounds provide excellent crystallization temperatures, stiffness, and acid scavenger compatibility within target polyolefins. Also, such compounds exhibit very low hygroscopicity and therefore excellent shelf stability as powdered or granular formulations. Thermoplastic additive compositions and methods of producing polymers with such compounds are also contemplated within this invention.

The invention relates to processing fields of such polyethylene films as agricultural films, packaging films, stretching and wrapping films, and the like, and in particular relates to a modified master batch for polyethylene films as well as preparation and use methods thereof. The modified master batch is characterized by being prepared from the following raw materials in parts by weight: 100 parts of polyethylene powder resin, 0.025-0.15 part of antioxidant, 3-15 parts of nucleating agent A and 3-15 parts of nucleating agent B, wherein the nucleating agent A is selected from hexahydrophthalic acid metal salts, and the nucleating agent B is selected from sorbitols and derivatives thereof. The modified master batch for polyethylene films provided by the invention has the advantages that a polyethylene composition containing the modified master batch can be used as a film product including an agricultural film, a packaging film, a stretching and wrapping film, and the like, the tearing resistance force of the film prepared by polyethylene resin added with the modified master batch provided by the invention can be increased by more than 40%, the haze is decreased by 60% to the uttermost, and the film clarity is increased by more than 10%, so that the comprehensive performance of the film product is improved.

The invention provides preparation methods of castor oil base carboxylate radical intercalated hydrotalcite for PVC (Polyvinyl Chloride) and a compound heat stabilizer thereof, belonging to the technical field of the preparation and applications of plastic additives. The preparation method of the castor oil base carboxylate radical intercalated hydrotalcite for the PVC is characterized in that castor oil base carboxylate radicals are intercalated into hydrotalcite interlayers by adopting a roasting restoring method, so that the castor oil base carboxylate radical intercalated hydrotalcite is prepared. The prepared castor oil base carboxylate radical intercalated hydrotalcite has excellent thermal stability. The improvement effect of the castor oil base carboxylate radical intercalated hydrotalcite serving as an auxiliary heat stabilizer on a calcium stearate/zinc stearate system is superior to that of carbonate radical intercalated hydrotalcite. When the castor oil base carboxylate radical intercalated hydrotalcite serves as a long-term thermal stabilizer, the static thermal stability time of the castor oil base carboxylate radical intercalated hydrotalcite, maleic acid castor-oil plant alcohol ester carboxylate radical intercalated hydrotalcite and cis-hexahydrophthalic acid castor-oil plant alcohol ester carboxylate radical intercalated hydrotalcite is respectively 87.7 minutes, 68.4 minutes and 63.6 minutes at 180 DEG C, the static thermal stability time of the castor oil base carboxylate radical intercalated hydrotalcite is longer than the 37.9-minute static thermal stability time of calcium stearate; and the long-term thermal stability time of the castor oil base carboxylate radical intercalated hydrotalcite is more ideal than that of the calcium stearate. The raw materials and the products are safe, environment-friendly, non-toxic and pollution-free.

The invention relates to hexahydrophthalic acid ester compound used for preparing the plasticizer without phthalic acid and benzoic acid, which can not cause damage to the organism and the environment. The invention adopts the preparation method that firstly, the esterifying reaction is performed to hexahydrophthalic anhydride and diatomic alcohol and catalyzator, after acid radical is removed, the hexahydrophthalic acid ester alcohol is synthetized, then monoprotic acid is added into the synthetized hexahydrophthalic acid ester alcohol to continue the esterificating reaction, and finally, the hexahydrophthalic acid ester compound is produced.

Compositions comprising specific disodium hexahydrophthalate(HHPA) salts in combination with acid scavengers (such as organic calcium salts or dihydrotalcite complexes) that provide highly desirable and effective nucleating properties within polymer articles (such as polyolefins) are provided. Surprisingly, such a combination of HHPA salt and acid scavenger provides high crystallization temperatures, low haze, and/or high flexural modulus to the finished polymer product. Other sodium salt polymer nucleators (such as sodium benzoate) deleteriously react with calcium organic salt acid scavengers such that characteristically high crystallization temperatures are drastically reduced when in combination with calcium salts (such as calcium stearate). Also, sodium benzoate when combined with dihydrotalcite acid scavengers produce extremely high haze levels in the finished target polymer article, whereas the inventive compositions surprisingly reduce haze. The finished polymer articles comprising such an inventive composition are also contemplated within this invention.

A hexahydrophthalate based compound is adapted to use as a plasticizer that contains no phthalic acid and benzoic acid, possess physical properties superior to DEHA and DINA in transparency and adhesion and is friendly to organisms and the environment; and a process for producing the hexahydrophthalate based compound includes esterifying hexahydrophthalic anhydride, a diol, and a catalyst for decarboxylation to get hexahydrophthalic alcohol, and adding a monoacid into the hexahydrophthalic alcohol for further esterification, thereby obtaining the hexahydrophthalate based compound.

The invention discloses an aqueous polyester resin paint. The aqueous polyester resin paint comprises polyol, polybasic acid, 8-16% of catalyst, 6-12% of a curing agent, 6-10% of a filler and 60-80% of water; the polyol comprises 8-12% of trimethylolpropane, 12-24% of neopentyl glycol, 6-12% of ethylene glycol and 8-12% of propylene glycol, and the polybasic acid comprises 5-15% of purified terephthalic acid, 12-24% of m-phthalic acid, 6-12% of phthalic acid, 10-18% of trimellitic anhydride, 6-12% of hexahydrophthalic acid, 10-20% of maleic anhydride and 5-10% of adipic acid; and the aqueous polyester resin paint also includes 0.1-0.3% of p-methoxyphenol, 6-24% of ethylene glycol monobutyl ether, 8-16% of dimethylethanolamine and 60-100% of deionized water. The aqueous polyester resin paint improves the stability of the hydrolysis of a polyester main chain in order to improve the aqueous insulation property of the polyester resin paint, can be widely used in aqueous insulation devices, and meets practical use requirements.

The invention provides a method for preparing hexahydrophthalic anhydride, belonging to the field of synthesis of fine chemicals. The method comprises the steps: phthalic anhydride is heated to 50 DEG C and injected into a phthalic anhydride dissolving tower, the phthalic anhydride is dissolved with a solvent, the temperature of the dissolving tower is 50-70 DEG C, the dissolved phthalic anhydride solution is pressurized and injected into a constant-pressure reaction kettle or a fixed bed reactor filled with a selective hydrogenation catalyst to carry out selective hydrogenation reaction, the product directly enters a solvent recovery column after hydrogenation reaction, the solvent is distilled off at the tower top, the materials at the tower bottom enter a hexahydrophthalic anhydride rectifying tower, the hexahydrophthalic anhydride is obtained at the tower bottom, and a mixture of phthalide, o-toluic acid and o-methyl cyclohexanecarboxylic acid is obtained at the tower top; and the mixture obtained at the top of the rectifying tower is recrystallized to crystallize phthalide. The method has the advantages of simple operation, favorable economic benefit and industrial application prospects.

The invention relates to an aqueous bi-component acrylic acid-polyurethane resin and a preparation method thereof. The aqueous bi-component acrylic acid-polyurethane resin comprises a component A and a component B, wherein the component A comprises n-butyl alcohol, monoethanolamine and/or n-butyl amine, hydroquinone and/or p-hydroxyanisole, glycidyl methacrylate, methyl methacrylate and/or isobornyl methacrylate, butyl acrylate and/or butyl methacrylate and/or acrylic acid laurate, hydroxyethyl acrylate, azodiisobutyronitrile, butylcellosolve and/or propylene glycol monomethyl ether, a molecular weight regulator, dimethylformamide, an acid neutralizer and water; the component B comprises butanone and/or ethyl acetate, propylene glycol methyl ether acetate, monoethanolamine and/or n-butylamine, cis-hexahydrophthalic acid glycidyl ester and/or tetrahydrophthalic acid glycidyl ester, IPDI (Isophorone Diisocyanate) and/or HDI (Hexamethylene Diisocyanate), ethylene glycol monobutyl ether and/or ethylene glycol, the acid neutralizer and the water; and the weight ratio of the component A to the component B is (4-7):1. A coating prepared from the aqueous bi-component acrylic acid-polyurethane resin is more than 150 microns in thickness and cannot generate bubbles or pinholes.

The invention discloses a high-weather-proof bulk molding compound. The high-weather-proof bulk molding compound comprises, by weight, 50-90 parts of hexahydrophthalic acid type unsaturated resin, 10-50 parts of low-shrinkage agents, 1-2 parts of curing agents, 2-6 parts of release agents, 2-6 parts of cross-linking agents, 80-250 parts of inorganic filler, and 40-150 parts of fiberglass. Compared with the prior art, the high-weather-proof bulk molding compound has the advantages that weather resistance is quite high, mechanical property, physical property and chemical property can be maintained for a long time in any environments, and yellowing, embrittlement, cracking and performance reduction are avoided.

The invention relates to a process for producing epoxidationdioctyl cyclohexane phthalate. THPA and octanol are used as raw materials, and have esterification reaction under the action of catalyst to produce tetrahydrochysene dioctylphthalate; when the esterification reaction finishes, an overoxidation agent and an acidizer are added to the tetrahydrochysene dioctylphthalate for epoxidation reaction, and are subjected to neutralization, washing, steam stripping and dealcoholization, decompression and distillation, and decolorization and filtration to obtain epoxidationdioctyl cyclohexane phthalate. The process has the advantages of simple processing, short production period which is shorted by approximately two hours, less equipment investment, less waste water discharge which is reduced by approximately 20 percent, small energy consumption, and reduction of production cost by approximately 10 percent.

The invention discloses a secondary amine chain extension cross-linking agent and a polyurethane elastic material. The structural formula of the secondary amine chain extension cross-linking agent is shown in the specification, and the preparation method comprises the following step: in the presence of a catalyst, reacting 4, 4'-bis(sec-butylamino) diphenyl methane with hexahydrophthalic acid diglycidyl ester. The operability of the secondary amine chain extension cross-linking agent and the strength, heat resistance and the like of the prepared polyurethane elastic material can be improved.

The invention discloses an epoxy powder coating for pipelines and a preparation method thereof. Diglycidyl hexahydrophthalate, polyester resin, choline chloride, benzoin, titanium dioxide, light calcium carbonate, Leveling agent, powder flow aid, talcum powder, edge covering agent, anti-caking agent, and pigments are mixed at high speed, melted and extruded, pressed into tablets, crushed, sieved and filtered to make powder coatings; it has no pollution, It has the characteristics of energy saving and environmental protection, good bonding performance, good weather resistance, long service life, and low production cost.

The invention relates to a curing agent for a pure polyester powder coating system and a preparation method thereof. The curing agent is prepared by polymerizing dimethyl adipate, 1,3,5-cyclohexanetricarboxylic acid, cis-hexahydrophthalic acid, diethanol amine, tetrafluoro-butanediol, tri-isopropanolamine, 1,1-cyclohexanedimethanol and pentaerythritol. The final curing agent is colorless transparent particles with a hydroxyl value of 200-250 mgKOH/g and a softening point of 110-125 DEG C; the curing agent can be subjected to cross-linked curing with powder coating pure polyester resin, whereinthe curing speed is relatively moderate, and a film with perfect levelling property can be obtained; pinholes rarely appear when the curing agent is applied to the coating of a 130 mu m thick film. Meanwhile, due to the introduction of a fluorine-containing material, tetrafluoro-butanediol, the outdoor weather resistance of the film is enhanced.