Patent
Aluminium terephthalate PVC heat stabilizer and preparation method thereof
TLDR
In this paper, a heat stabilizer for PVC is described, which is characterized by dissolving sodium terephthalate and aluminium nitrate (aluminium chloride, aluminium sulfate or aluminium hydroxide) in water, stirring at 20-180 DEG C for reacting for 1-24 h, and then filtering, washing and drying.Abstract:
The invention relates to a heat stabilizer for PVC, and preparation and application thereof. The preparation method is characterized by comprising: respectively dissolving sodium terephthalate and aluminium nitrate (aluminium chloride, aluminium sulfate or aluminium hydroxide) in water, stirring at 20-180 DEG C for reacting for 1-24 h, and then filtering, washing and drying, so as to prepare the aluminium terephthalate finished product and apply the finished product as the PVC heat stabilizer. The product is efficient, non-toxic, environment-friendly, low in cost, good in initial-stage dyeing property, excellent in transparency, weatherability and plasticizing property, and relatively good in compatibility with PVC. The product performances are not influenced by usage amount of additives during processing, processing equipment are not easy to wear, and the heat stabilizer has wide application prospect in PVC industry.read more
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Patent
Method for ultrasonically controlling terephthalic acid aluminum whisker
Chen Xiangying,Ding Yulan +1 more
TL;DR: In this article, a method for ultrasonically controlling a terephthalic acid aluminum whisker was proposed, and the results showed that the mechanical properties of materials such as PVC (polyvinyl chloride) and the like can be improved greatly while the thermal stability is kept.
Patent
Novel method for preparing PVC thermal stabilizer
Chen Xiangying,Ding Yulan +1 more
TL;DR: In this article, a novel method for preparing a PVC thermal stabilizer was proposed, which comprises the following steps: dissolving terephthalic acid by using a sodium hydroxide solution, thereby obtaining a clear liquid; adding aluminum oxide granules into the liquid, and slowly adding a soluble aluminum salt; filtering white precipitate in the solution, and drying at 200 DEG C.
Patent
Specific environment-friendly heat stabilizer prepared from waste polyester for PVC cables and preparation method thereof
TL;DR: A specific environment-friendly heat stabilizer prepared from waste polyester for PVC cables and a preparation method thereof is described in this paper, where the authors reveal a specific approach to obtain a specific environment friendly PTA for PVC cable.
Patent
Heat-aging-resistant modifier used for powder coating and preparation method of modifier
TL;DR: In this article, a heat-aging-resistant modifier for powder coating and a preparation method of the modifier is described. But the preparation method comprises the following steps: step 1, preparing the heat-resistant filler: adding metal hydroxide powder and phthalic acid powder into water according to a molar ratio of 1:1-1.5) to prepare a 10-20% solution, adding 1/2 of the dispersant, performing stirring for 60-120 min, wherein a stirring speed is 240-360 r/min, adjusting pH by using calcium
Patent
Method for in-situ modifying of terephthalic acid aluminum
TL;DR: In this paper, a method for in-situ modifying of terephthalic acid aluminum was proposed, in which the modified water or methanol solution was added into a terephoric acid sodium solution to form a mixed solution, and the soluble aluminum salt in water to form certain concentration.
References
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Patent
Method for preparing organic zinc by means of calcium analysis reactive crystallization
Gousheng Liu,Linlin Wang +1 more
TL;DR: In this paper, a method for preparing organic zinc by means of calcium analysis reactive crystallization is presented, which includes: adding terephthalic acid and water and/or filtrate in a reactor, and then adding sodium hydroxide to lead the TPA to dissolve into TPA sodium solution, wherein the mother solution is mother solution after centrifugal separation of organic zinc; adding saturated lime milk suspension to enable separation by crystallization of TPA calcium.
Patent
Process for producing fine powders of calcium terephthalate
TL;DR: In this article, the reaction between dialkali metal salts of terephthalic acid and calcium compounds while irradiating with ultrasonic vibration at more than 20 kC was described.