76414-35-2

Usage

Chemical structure

Ester of citric acid

Physical state

Clear, colorless liquid

Odor

Mild, fruity

Solubility

Insoluble in water

Applications

a. Plasticizer in polymers and resins
b. Food packaging materials
c. Medical devices
d. Children's toys

Advantages

a. Low toxicity
b. High compatibility with many polymers
c. Enhances flexibility and durability of plastic products

Upstream product

• 111-87-5 octanol 
• 77-92-9 citric acid 

Relevant academic research and scientific papers

COMPOSITION AND METHODS FOR TREATMENT OF PRIMARY CILIARY DYSKINESIA

The present invention provides, among other things, methods and compositions for treating primary ciliary dyskinesia (PCD) based on mRNA therapy. The compositions used in treatment of PCD comprise an mRNA comprising a dynein axonemal intermediate chain 1 (DNAI1) coding sequence and are administered at an effective dose and an administration interval such that at least one symptom or feature of PCD is reduced in intensity, severity, or frequency or has a delayed onset. mRNAs with optimized DNAI1 coding sequences are provided that can be administered without the need for modifying the nucleotides of the mRNA to achieve sustained in vivo function.

Citrate plasticizer

The invention discloses a citrate plasticizer and a preparation method thereof, and the preparation method of citrate comprises the following steps: firstly, citric acid and alcohol react to prepare citric acid triester, and then dianhydride acylation is carried out to prepare carboxyl-containing citric acid triester. After chlorination, the carboxyl-containing citric acid triester and the tris(2-ethoxyl) isocyanurate are subjected to esterification reaction to prepare triester citrate containing the isocyanurate. According to the present invention, the preparation method has characteristics of simple operation, wide raw material source and mild reaction condition, and meets the industrial production, the prepared triester citrate containing isocyanurate has a good plasticizing effect and excellent thermal stability, low-temperature flexibility, solvent extraction resistance, migration resistance and flame retardance, and can be widely applied to plastic rubber plasticizers.

Citrate plasticizer and preparation method thereof

The invention discloses a citrate plasticizer and a preparation method thereof. The preparation method comprises the following steps: firstly, carrying out reaction on citric acid and alcohol to prepare citric acid triester; acylating dianhydride to prepare carboxyl-containing triester citrate; carrying out acylating chlorination on the carboxyl-containing triester citrate, and then carrying out esterification reaction on the carboxyl-containing triester citrate and tri(2-hydroxyethyl) isocyanurate to prepare triester citrate containing isocyanurate; and finally, esterifying with fatty acyl chloride to obtain the modified citrate plasticizer. The preparation method is simple to operate, wide in raw material source and mild in reaction condition, and meets industrial production. The prepared triester citrate containing isocyanurate has a good plasticizing effect and excellent thermal stability, low-temperature flexibility, solvent extraction resistance, migration resistance and flame retardance, and can be widely applied to plastic rubber plasticizers.

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.

SKIN EXTERNAL PREPARATIONS AND COSMETICS

An object of the present invention is to provide skin external preparations and cosmetics which contain a branched acyl carnitine and have excellent formulation stability. A skin external preparation of the present invention includes a carnitine derivative represented by the following Formula (1) and/or a carnitine derivative salt represented by the following Formula (2), and an amphoteric surfactant. In Formula (1), R1 and R2 are each independently a C1-18 optionally branched, saturated or unsaturated aliphatic hydrocarbon group. In Formula (2), R1 and R2 are the same as in Formula (1), X? is a specific anion and Y+ is a specific cation.