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Zhang J.,East China University of Science and Technology | Liu Y.,East China University of Science and Technology | Feng Y.,Shanghai Joule Wax Industry Co.
Speciality Petrochemicals | Year: 2011

Using acetic acid, caprolactam, 1,12-dodecanedioic acid, 1,6-diaminohexane as raw materials, the high hardness of polyamide wax was synthesized via direct melt polycondensation reaction. The product was characterized by IR and the effects of the amount of reactants, polymerization temperature, and reaction time on the product were researched. The optimum conditions were found as follows: the molar ratio of 1,12-dodecanedioic acid or acetic acid to 1,6-diaminohexane of 1:1, the molar ratio of acetic acid to 1,12-dodecanedioic acid of 8:2, caprolactam dosage 50%-60%, polymerization temperature 190-200°C, and reaction time 4-5 h. The nature of the product was good, having a low dropping point and high hardness, with the penetration of 0 mm. Source


Zhang J.-Y.,East China University of Science and Technology | Meng G.-P.,East China University of Science and Technology | Feng Y.-Y.,Shanghai Joule Wax Industry Co.
Xiandai Huagong/Modern Chemical Industry | Year: 2011

A new type of amide wax is synthesized by fatty-acid-solvent and amidation methods using oil, glycerin, adipic acid and 1, 6-hexanediamine as raw materials, which can be used as as car anti-rust primer. The results show that, the optimal reaction condition is shown as follows: 200°C of esterification temperature, 3 hours of esterification time, 190°C of amidation temperature, 3 hours of amidation time, 10 wt% of oil content in monoacid, 1:1 of m(actual adipic amine):m(theoretical adipic amine). Under the optimal reaction condition, the dropping point of wax is more than 100°C. The amine value and acid value are less than 10 mg(KOH)/g. The film lightness L* is more than 80. The wax surface is dense and smooth. And the wax film can not fall off and break after repeatedly kinking. It meets with the performance requirements of automotive anti-rust primer. Source


Zhang J.-Y.,East China University of Science and Technology | Kang X.-L.,East China University of Science and Technology | Feng Y.-Y.,Shanghai Joule Wax Industry Co. | Yang S.-L.,Shanghai Joule Wax Industry Co. | And 2 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2011

Polyether waxes are hydrosilylated from polyhydrosiloxane and polyether in the presence of chlorine platinum acid as catalyst. The effects of factors, such as molar ratio of reactants, dosage of the catalyst, reaction time and temperature on Si-H conversion rate and performance of products are investigated as well. The optimal experimental conditions are as follows: the molar ratio of C=C to Si-H is 1.25:1.00, the molar ratio of F6 to APEG is 2.5:1.0, the molar ratio of Pt to C=C is 1.726:106, reaction temperature is 115°C, reaction time is 7 hours. The structure of the product is determined by FT-IR and the results indicate that the polyether grafts in the chain of polysiloxane. Source

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