16544-70-0

Usage

Chemical structure

1,2,3-Propanetricarboxylic acid, 2-hydroxy-, trihexyl ester

Usage

a. Plasticizer in polymers and resins
b. Non-toxic alternative to phthalate plasticizers in food and beverage packaging
c. Emollient and skin conditioning agent in cosmetics and personal care products

Safety

Deemed safe for use in consumer products by regulatory agencies such as the US Food and Drug Administration.

InChI:InChI=1S/C24H44O7/c1-4-7-10-13-16-29-21(25)19-24(28,23(27)31-18-15-12-9-6-3)20-22(26)30-17-14-11-8-5-2/h28H,4-20H2,1-3H3

Upstream product

• 77-92-9 citric acid 
• 111-27-3 hexan-1-ol 
• 7664-93-9 sulfuric acid 
• 77-94-1 Citroflex-4 
• 24555-16-6 citric acid anhydride 

Downstream Products

• 82469-79-2 n-butyryl tri-n-hexyl citrate 
• 107-92-6 butyric acid 

Relevant academic research and scientific papers

CITRATE-BASED PLASTICIZER COMPOSITION AND RESIN COMPOSITION COMPRISING SAME

The present invention relates to a plasticizer composition, including a lower alkyl-based citrate and a higher alkyl-based citrate at the same time, as citrate, wherein the ratio of a hybrid type to a non-hybrid type and the ratio of the lower alkyl groups to the higher alkyl groups are controlled so that effects are achieved. When applying the plasticizer composition to a resin, stress resistance and mechanical properties can be maintained at an equal or higher level, the migration and volatile loss properties and the plasticization efficiency can be balanced, and the light resistance and heat resistance can be remarkably improved.

PLASTICIZER COMPOSITION AND RESIN COMPOSITION INCLUDING THE SAME

Provided is a plasticizer composition including: a cyclohexane-1,2-diester-based substance of the following Chemical Formula 1; and a citrate-based substance of the following Chemical Formula 2: wherein in Chemical Formula 1 and Chemical Formula 2: R1 and R2 each independently are a C8 to C10 alkyl group; and R3 to R5 each independently are a C5 to C10 alkyl group.

Preparation method of citrate

The invention discloses a method for preparing citrate by taking citric acid and fatty alcohol as main raw materials and using carbodiimide as a catalyst. The method is characterized in that in the synthetic process of citrate, carbodiimide is used as a catalyst, which not only can achieve a catalytic action but also can be used as a water retaining agent to absorb water generated in the process of esterification reaction so as to ensure that the reaction is carried out in a direction of generating ester. After reaction, a citrate compound is synthesized by virtue of purification processes of filtration, neutralization, water washing, decolorization, reduced pressure distillation and the like, and the preparation method belongs to the technical field of organic chemical synthesis. The preparation method disclosed by the invention has the advantages that the yield is high and reaches 95-98%; the catalyst is low in price and less in dosage which accounts for 0.2-1.25% of the total weight of the reaction raw material namely citric acid; the reaction condition is mild, the reaction can be carried out at normal temperature, the reaction speed is high, and the reaction time is short; the catalyst can be used repeatedly; and the catalyst is also a water retaining agent, reduces the addition of organic solvents of methyl benzene and the like, and is safe and environmentally friendly.

Sulfonated graphene as highly efficient and reusable acid carbocatalyst for the synthesis of ester plasticizers

Plasticizers are well known for their effectiveness in producing flexible plastics. The automotive, plastic and pharmaceutical industries, essential to a healthy economy, rely heavily on plasticizers to produce everything from construction materials to medical devices, cosmetics, children toys, food wraps, adhesives, paints, and 'wonder drugs'. Although H2SO4 is commonly used as commodity catalyst for plasticizer synthesis it is energy-inefficient, non-recyclable, and requires tedious separation from the homogeneous reaction mixture resulting in abundant non-recyclable acid waste. In this study, for the first time, we report an efficient synthesis of ester plasticizers (>90% yields) using sulfonated graphene (GSO3H) as an energy-efficient, water tolerant, reusable and highly active solid acid carbocatalyst. The hydrothermal sulfonation of reduced graphene oxide with fuming H2SO4 at 120°C for 3 days afforded GSO3H with remarkable acid activity as demonstrated by 31P magic-angle spinning (MAS) NMR spectroscopy. The superior catalytic performance of GSO3H over traditional homogeneous acids, Amberlyst-15, and acidic ionic liquids has been attributed to the presence of highly acidic and stable sulfonic acid groups within the two dimensional graphene domain, which synergistically work for high mass transfer in the reaction. Furthermore, the preliminary experimental results indicate that GSO3H is quite effective as a catalyst in the esterification of oleic and salicylic acid and thus may pave the way for its broad industrial applications in the near future.

Acylated esters

Acylated citrate esters are made with a polishing step that includes contact with a polishing composition having a fatty acid absorbent to remove residual odor-forming precursors from the resulting acylated ester.

PROCESS FOR THE PRODUCTION OF METAL SALTS OF TRIFLUOROMETHANE SULPHONIC ACID AND THEIR USE AS ESTERIFICATION CATALYSTS

The subject matter of the invention is a process for the production of metal salts of trifluoromethane sulphonic acid by reacting trifluoromethane sulphonic acid with a metal alcoholate and the use thereof as esterification catalyst and/or transesterification catalyst for the production of hydroxycarboxylic acid esters.