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Method of preventing adamantane consolidation

A technology for adamantane and naphthene, which is applied in the field of adamantane consolidation prevention, can solve the problems of inefficient production and complicated adamantane process.

Inactive Publication Date: 2007-06-20
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As shown in Patent Document 1, the method of improving the operability after granulation shows a certain effect, but re-agglomeration between tablets occurs during long-term storage, or the agglomerates are pulverized during the manufacturing process. Afterwards, granulation is carried out, which will inevitably make the process complicated when producing a large amount of adamantane, and there is inconvenience that it cannot be produced efficiently

Method used

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  • Method of preventing adamantane consolidation

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1 (solvent other than naphthenic system)

[0040] Use conduction heating ditch type stirring dryer (capacity 117L, heat transfer area 3.88m 2 ), at a pressure of 10kPa and a temperature of 50°C, 20kg of adamantane particles (carbon number of 10 or more hydrocarbons (0.92% by mass %) were dried for 40 to 60 minutes.

[0041] The 2-propanol content of the adamantane particles after 40 minutes was 0.04% by mass, and after 60 minutes was 0.03% by mass. It should be noted that the adamantane particles subjected to the above treatment did not solidify after 90 days at 25° C. under normal pressure. Although a load was applied to the adamantane particles and they were stored under a pressure of 30 kPa, they were not solidified even after 90 days.

Embodiment 2

[0043] The adamantane particles were dried in the same manner as in Example 1 except that the drying temperature was set to 40°C. The 2-propanol content of the adamantane particles after 40 minutes was 0.04% by mass, and after 60 minutes was 0.03% by mass. It should be noted that the adamantane particles subjected to the above treatment did not solidify after 90 days at 25° C. under normal pressure. Even when a load was applied to the adamantane particles and stored under a pressure of 30 kPa, they were not solidified after 90 days.

Embodiment 3

[0045] The adamantane particles were dried in the same manner as in Example 1, except that the drying temperature was 0°C. The 2-propanol content of the adamantane particles after 40 minutes was 0.05% by mass, and after 60 minutes was 0.04% by mass. It should be noted that the adamantane particles subjected to the above treatment did not solidify after 90 days at 25° C. under normal pressure. Even when a load was applied to the adamantane particles and stored under a pressure of 30 kPa, they were not solidified after 90 days. The samples did not consolidate after 90 days at 25°C under normal pressure.

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Abstract

The present invention provides a method of controlling the amount of the solvent contained in adamantane purified by using a naphthene-based solvent to 0.35% by mass or less, or controlling the amount of the solvent contained in adamantane purified by using a non-naphthene-based solvent to 0.05% by mass or less and storing adamantane at 35 DEG C or lower. By this method, adamantane whose particles do not agglomerate together or cake and having stable quality can be obtained.

Description

technical field [0001] The present invention relates to a method for preventing solidification of adamantane, and more specifically, to a method for preventing solidification of adamantane when storing or transporting adamantane. Background technique [0002] Adamantane is generally used as an industrial chemical, especially as a raw material for chemical products, medical drugs, monomer substrates for photoresists, etc., and its demand has recently been increasing. In addition, similar utilization is expected for adamantane derivatives obtained by secondary processing of these substances. [0003] This kind of adamantane is synthesized with dicyclopentadiene as a raw material and a Lewis acid such as aluminum chloride as a catalyst. It is usually made into industrial chemicals after a washing process with an organic solvent. It is produced in a so-called drum or The packaging style of the paper bag is out of the warehouse and distributed. [0004] However, although the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/615C07C7/00
CPCC07C7/00C07C13/615C07C5/29
Inventor 间濑淳草场敏彰
Owner IDEMITSU KOSAN CO LTD