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Method for synthesizing solution-type rare-earth rubber catalyst

A rare earth rubber and catalyst technology, applied in the field of rare earth rubber catalyst synthesis, can solve the problems of poor fluidity, heterogeneity, disadvantage and the like, and achieve the effect of simple process and low cost

Active Publication Date: 2014-04-02
华宇橡胶有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The products of these processes are often unfavorable for transportation and continuous industrial production due to their high viscosity, heterogeneous phase, and poor fluidity when they are subjected to ternary aging.

Method used

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  • Method for synthesizing solution-type rare-earth rubber catalyst
  • Method for synthesizing solution-type rare-earth rubber catalyst
  • Method for synthesizing solution-type rare-earth rubber catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use neodymium trioxide and hydrochloric acid to prepare an aqueous solution of neodymium trichloride with a concentration of 1.14 mol / L; use hexane to prepare a solution of P507 with a concentration of 0.35 mol / L; use distilled water to prepare an aqueous solution of sodium hydroxide with a concentration of 4.97 mol / L.

[0024] Take 2 L of P507 hexane solution in a 10 L container, add 2 L of hexane, then add 140 mL of sodium hydroxide solution under stirring, and stir and react at 50°C for 30 min to obtain a saponified solution. Then 205 mL of neodymium trichloride solution was added, and the reaction was rapidly stirred at room temperature for 30 min, and 1 L of hexane was added when the reaction was carried out for 10 min. Neodymium organophosphate was formed during the reaction, and the solution became obviously viscous, and stratification occurred after the stirring was stopped. The upper layer was a slightly purple viscous substance, and the lower layer was a clear ...

Embodiment 2

[0027] Use neodymium trioxide and hydrochloric acid to prepare an aqueous solution of neodymium trichloride with a concentration of 1.14 mol / L; prepare a P204 solution with a concentration of 0.36 mol / L with hexane; prepare an aqueous solution of sodium hydroxide with a concentration of 4.97 mol / L with distilled water.

[0028] Take 2 L of P204 hexane solution in a 10 L container, add 2 L of hexane, then add 145 mL of sodium hydroxide solution under stirring, and stir and react at 50°C for 30 min to obtain a saponified solution. Then 210 mL of neodymium trichloride solution was added, and the reaction was rapidly stirred at room temperature for 30 min, and 1 L of hexane was added when the reaction was carried out for 10 min. Neodymium organophosphate was formed during the reaction, and the solution visibly became viscous, and stratification occurred after the stirring was stopped. The upper layer was a slightly purple viscous substance, and the lower layer was a clear and trans...

Embodiment 3

[0031] Use neodymium trioxide and hydrochloric acid to prepare an aqueous solution of neodymium trichloride with a concentration of 1.14 mol / L; use hexane to prepare a solution of P507 with a concentration of 0.35 mol / L; use distilled water to prepare an aqueous solution of sodium hydroxide with a concentration of 4.97 mol / L.

[0032]Take 2 L of P507 hexane solution in a 10 L container, add 1.65 L of hexane, then add 140 mL of sodium hydroxide solution under stirring, and stir and react at 50°C for 30 min to obtain a saponified solution. Then 205 mL of neodymium trichloride solution was added, and the reaction was rapidly stirred at room temperature for 30 min, and 1 L of hexane was added when the reaction was carried out for 10 min. Neodymium organophosphate was formed during the reaction, and the solution became obviously viscous, and stratification occurred after the stirring was stopped. The upper layer was a slightly purple viscous substance, and the lower layer was a clea...

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Abstract

The invention relates to a method for synthesizing a solution-type rare-earth rubber catalyst. The method comprises the following steps: preparing a neodymium trichloride water solution by using neodymium oxide and hydrochloric acid; mixing an organic phosphoric acid with an organic solvent to obtain an organic phosphoric acid solution; adding an alkaline solution to obtain saponification liquid; adjusting the viscosity of the solution by using a viscosity adjuster after completely dissolving; respectively carrying out binary ageing and ternary ageing, so as to obtain a rare-earth catalytic system which is directly applied to rubber production. The technology for preparing the rare-earth rubber catalyst provided by the invention is simple in process and low in cost, and the viscosity of organic phosphate neodymium can be freely adjusted according to the requirements. In addition, saturated alkane hexane is adopted in the preparation process, so that an organic solvent of polluting the environment is avoided; the waste water generated in the washing process comprises a main ingredient of sodium chloride, and can be safely discharged after being processed; a step of rectification dehydration is introduced to the technology, so that the moisture content in the catalyst can be strictly controlled.

Description

(1) Technical field [0001] The invention relates to a synthesis method of a rare earth rubber catalyst, in particular to a solution-type catalyst with adjustable viscosity which is applied to the polymerization of isoprene or butadiene to produce rare earth isoprene rubber, rare earth butadiene rubber or butadiene rubber. A method for the synthesis of solution-type rare earth rubber catalysts. (2) Background technology [0002] The development of the rubber industry has always been inseparable from the development of its corresponding catalysts. The emergence of Ziegler-Natta catalysts brought a revolutionary breakthrough for the synthesis of butadiene rubber and isoprene rubber, and laid the foundation for the modern rubber industry. The emergence of catalysts such as lithium series, iron series, titanium series, cobalt series and nickel series has greatly promoted the further development of the rubber industry. Since the 1960s, my country began to study rare earth rubber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/54C08F4/52C08F36/08C08F36/06
Inventor 胡尊燕王胜伟陈双喜袁本福刘海燕侯红霞
Owner 华宇橡胶有限责任公司
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