Abstract: A method for treating a waste liquid comprises: step (A), adding a precursory oxidant to a waste liquid having a temperature of 25-70° C.; wherein, the precursory oxidant is hydrogen peroxide or sodium percarbonate, and in mg/L, a ratio of the precursory oxidant/the total amount of sulfide is 2.20 to 6.37; step (B), mixing an advanced oxidant and the waste liquid after step (A); wherein, the advanced oxidant is sodium persulfate or potassium persulfate, and in mg/L, a ratio of the advanced oxidant/COD after step (A) is 7.63 to 33.27; step (C), using UV illumination method to illuminate the oxidant dissolved in the waste liquid after step (B), and aerated with oxygen-containing gas. By the above-described method, it can achieve the purpose of sulfide conversion and degradation and removal of organic pollution composition under the condition free of the generation of H2S.

Abstract: An oligomer (2,6-dimethylphenylene ether) is provided. Its structure is shown as follows: which comprises separately independent hydrogen; alkyl or phenyl; separately independent —NR—, —CO—, —SO—, —CS—, —SO2—, —CH2—, —O—, null, —C(CH3)2—, or and a hydrogen, The features of the cured products include a high glass-transition temperature, a low dielectric feature, preferred thermal stability, and good flame retardancy. The present invention effectively controls the number-average molecular weight of the product to obtain excellent organic solubility.

Abstract: A phosphinated (2,6-dimethylphenyl ether) oligomer, preparation method thereof and cured product. The phosphinated (2,6-dimethylphenyl ether) oligomer includes a structure represented by Formula (1): wherein X is a single bond, —CH2—, —O—, —C(CH3)2— or R?0, R0, R1, R2 and R3 are independently hydrogen, C1-C6 alkyl or phenyl; n and m are independently an integer from 0 to 300; p and q are independently an integer from 1 to 4; Y is hydrogen, U and V are independently an aliphatic structure.

Abstract: The invention discloses functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers containing dicyclopentadiene, a method of producing the same and use thereof. The cured products of the functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers of the invention exhibit low dielectric constant, low dissipation, and high glass transition temperature. As the functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers of the invention have number-average molecular weight ranging from 2500 to 6000 g/mol, the substrate made of theses functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers can pass the pressure cook test. Besides, the low dissipation factor characteristic the functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers of the invention can only be demonstrated at number-average molecular weight higher than 2500 g/mol.

Abstract: An oligomer (2,6-dimethylphenylene ether) is provided. Its structure is shown as follows: which comprises separately independent hydrogen; alkyl or phenyl; separately independent —NR—, —CO—, —SO—, —CS—, —SO2—, —CH2—, —O—, null, —C(CH3)2—, or and a hydrogen, The features of the cured products include a high glass-transition temperature, a low dielectric feature, preferred thermal stability, and good flame retardancy. The present invention effectively controls the number-average molecular weight of the product to obtain excellent organic solubility.

Abstract: A phosphinated (2,6-dimethylphenyl ether) oligomer, preparation method thereof and cured product are provided. The phosphinated (2,6-dimethylphenyl ether) oligomer includes a structure represented by Formula (1): wherein X is a single bond, —CH2—, —O—, —C(CH3)2— or R?0, R0, R1, R2 and R3 are independently hydrogen, C1-C6 alkyl or phenyl; n and m are independently an integer from 0 to 300; p and q are independently an integer from 1 to 4; Y is hydrogen, U and V are independently an aliphatic structure.

Abstract: A method is provided for fabricating a diol containing a bis-cycloaliphate. The diol is hydrogenated with hydrogen and a catalyst. Therein, the diol has a bis-aromatic. The catalyst comprises an active metal and a catalyst carrier. The active metal is a VIII-B-group transition element. The catalyst carrier is an oxide of IV-B-group element. Thus, the diol containing the bis-cycloaliphate is generated.

Abstract: The present invention discloses a process for making alicyclic polycarboxylic acids or their derivatives, referring to a process for hydrogenating aromatic polycarboxylic acids or their derivatives in the presence of hydrogen and a catalyst to form alicyclic polycarboxylic acids or their derivatives, and the catalyst comprises at least one active metal of group VIIIB transition elements of the periodic table of elements, and a catalyst support comprising group IIA and group IIIA elements in a specific weight ratio.

Abstract: The present invention discloses a process for making alicyclic polycarboxylic acids or their derivatives, referring to a process for hydrogenating aromatic polycarboxylic acids or their derivatives in the presence of hydrogen and a catalyst to form alicyclic polycarboxylic acids or their derivatives, and the catalyst comprises at least one active metal of group VIIIB transition elements of the periodic table of elements, and a catalyst support comprising group IIA and group IIIA elements in a specific weight ratio.

Abstract: This invention discloses the process for hydrogenation of aromatic polycarboxylic acids or derivatives thereof, hydrogenation of aromatic polycarboxylic acids or derivatives thereof can be achieved in the present of the catalyst, which consist at least one metal of the eighth transition group of the Periodic Table as the active metal while group IIA and group IVA elements are included as the catalyst support.

Abstract: The invention discloses functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers containing dicyclopentadiene, a method of producing the same and use thereof. The cured products of the functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers of the invention exhibit low dielectric constant, low dissipation, and high glass transition temperature. As the functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers of the invention have number-average molecular weight ranging from 2500 to 6000 g/mol, the substrate made of theses functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers can pass the pressure cook test. Besides, the low dissipation factor characteristic the functionalized poly(2,6-dimethyl phenylene oxide oxide) oligomers of the invention can only be demonstrated at number-average molecular weight higher than 2500 g/mol.

Abstract: A method for producing adamantane includes the steps of preparing a catalytic composition including an acidic ionic liquid and a co-catalyst and subjecting a tetrahydrodicyclopentadiene-containing component to isomerization in the presence of the catalytic composition to form adamantane. The acidic ionic liquid includes aluminum chloride and a quaternary onium compound selected from the group consisting of a quaternary ammonium halide, a quaternary phosphonium halide, and a combination thereof. The co-catalyst is an oxygen-containing reagent.

Abstract: Fatty acids are produced through transacylation. An organic nitrogen-containing compound is reacted with alkyl sultone to generate a white solid of a zwitterionic compound. After being purified and dried, the white solid is powdered to be reacted with a Bronsted strong acid for obtaining a clear viscous water-based acidic ionic liquid (IL) as a catalyst used used to effectively process transacylation between oil and acetic acid (HOAc) for fabricating fatty acid (FFA) and glycerol triacetate (GTA). Therein, unsaturated fatty acid is simultaneously processed through addition acetoxylation to obtain stabilized acetoxy fatty acid (AFFA). After, HOAc is recycled through vacuuming. Then, the product and the IL are stratified. The product at upper layer is taken out. The IL at lower layer can be recycled for processing transacylation and addition acetoxylation repeatedly. Therein, fatty acids including the stabilized AFFA are obtained from the product after taking out GTA through vacuum distillation.

Abstract: A method for producing adamantane includes the steps of preparing a catalytic composition including an acidic ionic liquid and a co-catalyst and subjecting a tetrahydrodicyclopentadiene-containing component to isomerization in the presence of the catalytic composition to form adamantane. The acidic ionic liquid includes aluminum chloride and a quaternary onium compound selected from the group consisting of a quaternary ammonium halide, a quaternary phosphonium halide, and a combination thereof. The co-catalyst is an oxygen-containing reagent.