60results about How to "Good initial colorability" patented technology

A hydrotalcite-based composite thermal stabilizer for PVC and chlorine-contained high polymer is prepared from hydrotalcite, calcium soap and zinc soap through proportionally mixing.

The invention relates to a high-efficiency environment-friendly stabilizing agent used for PVC section bars, which belongs to the technical field of PVC processing aids. The stabilizing agent comprises the following raw materials by weight: 20 to 30 of calcium stearate, 20 to 30 of zinc stearate, 10 to 15 of polyol ester, 1 to 3 of an anti-oxidant, 0.5 of an ultraviolet ray absorber, 10 to 30 of hydrotalcite, 3.5 of beta-diketone, 5 to 15 of alpha-phenylindole and 8 to 15 of epoxy compounds. The invention enables the problem of thermal decomposition of PVC section bars during processing to beovercome and the problem of discoloring because of long-term illumination and exposure in air during daily usage of PVC section bars to be solved, meeting developmental needs of section bars in China.

The invention relates to a preparation method of compound thermal stabilizer in plastic processing additive and pertains to the technical field of plastic processing additive. The invention discloses a ternary hydrotalcite-rare earth-Ca/Zn innoxious compound thermal stabilizer and a preparation method thereof. The invention comprises the materials of the stabilizer such as ternary hydrotalcite, organic rare earth compound, Ca compound and Zn compound, a synthetic preparation method thereof and an optimal compounding method of ternary hydrotalcite-rare earth-Ca/Zn innoxious compound thermal stabilizer. The ternary hydrotalcite-rare earth-Ca/Zn innoxious compound thermal stabilizer provided by the invention serves as a new generation high-efficiency innoxious stabilizer, can replace the traditional lead salt and expensive organic stannum thermal stabilizer and can be widely applied to the fields of PVC pipe material, section material, wire and cable, medical instrument and membrane, etc.

The invention relates to a novel molecular sieve PVC (polyvinyl chloride) composite stabilizing agent and its preparation method. The stabilizing agent is characterized by comprising the following raw materials by mass percent: 20-40% of calcium stearate; 15-25% of zinc stearate; 5-15% of a molecular sieve; 8-20% of a lubricating agent; 8-15% of a surface modification agent; and 5-15% of an auxiliary heat stabilizing agent. The preparation method has no pollution and low energy consumption. According to the national standard GB2113-82 ''test for whiteness of plastics'', the prepared novel modification composite stabilizing agent, compared with traditional stabilizing agents, has excellent thermal stability. And the prepared molecular sieve in the invention has a micropore structure, and diameters of the pores are uniform in size.

The invention relates to a composite heat stabilizer used in PVC, the preparation and application thereof. The composite heat stabilizer is prepared by compounding mg-al hydrotalcite and zn-al hydrotalcite according to a certain proportion. The mg-al hydrotalcite and the zn-al hydrotalcite are reasonably modified and excellently compounded by stearic acid, which can greatly save the energy consumption, increases the efficiency, and increases the thermal stability performance. In the aspect of heat stability performance, the product is non-toxic and efficient, has low cost, good initial coloration, transparency, and excellent weather resistance and plasticity, and good compatibility with PVC. The use level of an additive in the course of processing does not influence the performance of products and is difficult to wear down process equipment. The products can directly use no-toxic products to finish the substitutions of cadmium free, lead free and bromine free of export products, further is applicable to other relative industries and fields, has wide application prospect.

The invention belongs to the field of a heat stabilizer for PVC (polyvinyl chloride) and relates to an environmental-friendly high-efficiency composite heat stabilizer for tribasic zinc PVC (polyvinyl chloride) and a preparation method of the environmental-friendly high-efficiency composite heat stabilizer. The environmental-friendly high-efficiency composite heat stabilizer for the tribasic zinc PVC (polyvinyl chloride) is prepared by performing a reaction of tribasic zinc, calcium stearate, a lubricant and an auxiliary heat stabilizer, wherein the tribasic zinc is prepared by mixing pentaerythritol and zinc oxide according to a weight ratio of 6-8:3 and performing a reaction for 4 to 6 hours at a temperature of 140 to 180 DEG C. The preparation method comprises the following steps of: adding the tribasic zinc and the calcium stearate into a reaction kettle for sufficiently mixing; adding the mixed materials into a kneading machine to knead for 15 to 25 minutes at a temperature of 100 to 120 DEG C; adding a lubricating agent and the auxiliary heat stabilizer in the kneading machine to knead and stir for 25-35min; and carrying out discharging, tabletting, sieving and packaging to obtain the finished product. The prepared environmental-friendly high-efficiency composite heat stabilizer for the tribasic zinc PVC (polyvinyl chloride) has the characteristics that the environmental-friendly high-efficiency composite heat stabilizer is difficult to separate out and has good stabilizing effect; the balancing torque can be reduced; and the processing property is improved. Moreover, the environmental-friendly high-efficiency composite heat stabilizer for the tribasic zinc PVC (polyvinyl chloride) has the advantages of high efficiency and environment protection.

The invention relates to zinc-based heat stabilizer for polyvinyl chloride, a composition with the same and an application of the zinc-based heat stabilizer for polyvinyl chloride. The zinc-based heat stabilizer is prepared from urea organic matter and zinc salt through a liquid phase reaction. According to the composition independently prepared from the zinc-based heat stabilizer or prepared by mixing the zinc-based heat stabilizer, calcium carboxylate, beta-diketone, phosphite ester and polyhydric alcohols raw materials, the thermal stability of PVC can be effectively improved. The raw materials of the zinc-based heat stabilizer are easy to obtain, the synthetic process is simple, industrial application prospects are achieved, and the zinc-based heat stabilizer has the important guiding function on research and development of novel urea heat stabilizer.

The invention relates to a novel composite heat stabilizer which is characterized by containing phthalic acid metal salt, fatty acid rare earth, beta-diketone, calcium acetylacetonate, a composite antioxidant, PE wax and hexadecanol. The novel composite heat stabilizer provided by the invention can be used for comprehensively and effectively enhancing the heat stability of polyvinyl chloride, for instance, a polyvinyl chloride material with the composite heat stabilizer added has longer Congo red discoloring time and more excellent initial colorability and dynamic heat stability, has good processing property and is capable of promoting the plasticization, reducing the torque of a fusant, free of toxicity, environmental-friendly, capable of substituting an organic tin heat stabilizer, a lead heat stabilizer or other heat stabilizers with higher toxicity.

The present invention discloses a synthetic method of PVC thermal stabilizer dyadic carboxylic acid rare-earth salt. The method is characterized in that absolute ethyl alcohol is solvent; hydrogen peroxide is reducing agent; soluble rare-earth inorganic salt, alkali and dyadic carboxylic acid are reacted according to the mol ratio of 1: 2.5-3.5:0.3-2 under the temperature of 40 to 80 DEG C so as to produce the dyadic carboxylic acid rare-earth salt. The purpose is to be used as the thermal stabilizer of PVC plastic processing. The dyadic carboxylic acid rare-earth salt as the thermal stabilizer provided by the present invention not only overcomes the settlement of the prior thermal stabilizer but also increases the preliminary tinctorial property and long-term thermal stability; in addition, the present invention also greatly promotes the PVC plastication and has low cost, therefore, the present invention has the prospect of industrial application.

The invention relates to the application of bipyridine ester phosphite to a PVC heat stabilizer. bipyridine ester phosphite can be applied to preparation of a liquid barium-zinc stabilizer, a liquid barium-cadmium-zinc stabilizer and a liquid calcium-zinc stabilizer. The liquid barium-zinc stabilizer is prepared from, by weight, 40-50 parts of barium isotanoate, 10-15 parts of zinc-based complex, 5-10 parts of bipyridine ester phosphite, 2-7 parts of 2-ethyl acetyl benzoyl methane, 1-10 parts of thiodipropionicacid dilauryl ester and 10-20 parts of tripropylene glycol n-butyl ether. The bipyridine ester phosphite compound has a higher anti-precipitation property than aliphatic or aromatic phosphite ester by means of a novel heterocyclic perssad replacing the aliphatic or aromatic perssad during preparation of the liquid barium-zinc stabilizer, the liquid barium-cadmium-zinc stabilizer and the liquid calcium-zinc stabilizer. By introducing nitrogen atoms to the heterocyclic ring, the auxiliary stabilization effect on phosphite ester is improved remarkably, and then the printing performance and stability of a modified PVC product are improved.

The invention discloses a novel environmental-friendly anti-mold flame-retardant polyvinyl chloride protection layer material which is characterized by being prepared from the following raw materials in parts by weight: 100 parts of PVC resin, 2-8 parts of a plasticizer a, 30-55 parts of a plasticizer b, 5-10 parts of a flame retardant a, 5-10 parts of a flame retardant b, 10-40 parts of packing a, 20-30 parts of packing b, 2-10 parts of a thermal stabilizer, 0.5-2 parts of a lubricant, 1-3 parts of a processing modifier, 0.2-0.4 part of an anti-mold agent and 5-10 parts of a toughening agent, wherein the anti-mold agent is an antibacterial anti-mold agent which is compounded from an inorganic porous mineral material loaded with inorganic antibacterial factors and organic anti-mold factors. Compared with a common PVC flame-retardant protection layer material, the novel environmental-friendly anti-mold flame-retardant polyvinyl chloride protection layer material disclosed by the invention is very good in anti-mold property, and the service life of the protection layer material is greatly prolonged.

The invention discloses a metal oxide-hexanehexol compound heat stabilizer, a preparation method and application in PVC. The heat stabilizer is composed of compounds generated after hexanehexol reacts with metal oxide, and the compounds comprise hexanehexol metal salt, the metal oxide, the hexanehexol and dehydrated hexanehexol. The synthesized metal oxide-hexanehexol compound heat stabilizer is non-toxic and environmentally friendly, low in melting point and easy to disperse, the compatibility between the heat stabilizer and a PVC base body is good, initial coloration is good, long-term stability is good, lubrication performance is good, and the problem that an existing environment-friendly PVC heat stabilizer is poor in heat stabilizing effect is solved. When zinc oxide-mannitol compounds prepared under preferred conditions are applied to PVC, heat stabilizing time can be 240 minutes, and the problem that the existing environment-friendly PVC heat stabilizer is poor in heat stabilizing effect is solved.

The invention discloses a method for preparing magnesium-aluminum-zinc hydrotalcite from aluminum-air battery electrolytic waste liquid, and application thereof. The preparation method comprises a scheme 1 or a scheme 2, and the scheme 1 comprises the following steps: filtering the aluminum-air battery electrolytic waste liquid in advance, reacting filtrate with a magnesium source and a zinc source, carrying out solid-liquid separation to obtain hydroxyl type magnesium-aluminum-zinc hydrotalcite, reacting the hydroxyl type magnesium-aluminum-zinc hydrotalcite with a carbon source, and filtering to obtain magnesium-aluminum-zinc hydrotalcite; and the scheme 2 comprises the following steps: directly reacting filtrate obtained by filtering the aluminum-air battery electrolytic waste liquid with the magnesium source, the zinc source and the carbon source, and performing solid-liquid separation to obtain magnesium-aluminum-zinc hydrotalcite. By adopting the method, resource utilization of the aluminum-air battery electrolytic waste liquid can be realized, the magnesium-aluminum-zinc hydrotalcite with a relatively high additional value can be obtained, the production cost of the hydrotalcite can be reduced, and the prepared magnesium-aluminum-zinc hydrotalcite is relatively low in impurity content, easy in crystal form control, simple in equipment operation, relatively low in production cost, energy-saving and environment-friendly, and is easy to realize industrial production.

By the technology of a heterogeneous system, orotic acid hydrate zinc is prepared to enhance stability of PVC. The preparation method comprises the following steps: adding proper amounts of uracil and deionized water into a four-mouth flask, heating and fully stirring, adding proper amounts of ammonia water and a phase-transfer catalyst, letting the phase-transfer catalyst be uniformly dispersed in the solution, and cooling the solution to room temperature; adding zinc pyrrolidone carboxylate and glycerol while stirring, stirring at constant temperature at room temperature for several hours, pouring the reaction solution into lots of ethanol to obtain white precipitate, separating with cold water, and washing and drying. The orotic acid hydrate zinc is used as a PVC heat stabilizer and can reduce initial coloration of PVC and prolong later zinc burning. According to the technology, cold water is used for separation and purification of the product. Thus, traditional technological flow is greatly simplified, and resource waste and environmental pollution are avoided. The raw materials are easily available, and the preparation technology is simple. Therefore, the technology has a good industrial application prospect.

The invention relates to a new use of dicarboxylates as PVC heat stabilizer. The aliphatic dicarboxylates is nontoxic and environment-friendly, is of cheap price, lubricating quality and high metal content, and can improve inherent heat stability, paintability and long-term stability of PVC, so it has a good industry application prospect.