Occidental Petroleum has been granted a patent for a method to produce carbon tetrachloride by reacting chlorine with chloroform using electromagnetic radiation. The process involves creating chloride radicals and includes steps for managing byproducts, allowing the direct use of the resulting carbon tetrachloride in further chemical synthesis. GlobalData’s report on Occidental Petroleum gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Occidental Petroleum, Power-to-gas system was a key innovation area identified from patents. Occidental Petroleum's grant share as of July 2024 was 74%. Grant share is based on the ratio of number of grants to total number of patents.
Method for producing carbon tetrachloride using chloroform
The granted patent US12054444B2 outlines a method for producing carbon tetrachloride through a series of defined steps. The process begins with the creation of a free radical mixture that includes chlorine gas, carbon tetrachloride, and chlorine free radicals. This mixture is then combined with a chloroform feed stream to generate an intermediate product stream containing carbon tetrachloride, excess chlorine, and hydrochloric acid as a byproduct. A critical step involves the removal of excess chlorine and hydrochloric acid from this intermediate stream, resulting in a purified carbon tetrachloride stream that can be directly utilized in subsequent chemical syntheses without the need for further purification of organic species.
The patent further specifies parameters for the method, including the concentration of chloroform in the reaction mixture, which should be less than 5,000 ppm by weight, and the resulting carbon tetrachloride stream should contain less than 1,000 ppm of hexachloroethane. Additionally, the method incorporates the use of electromagnetic radiation to facilitate the formation of the free radical mixture, with specified wavelength distributions for optimal efficiency. The reaction is conducted within a controlled temperature range of 10° C. to 70° C. and a pressure range of 0.9 to 10 atmospheres. The claims also emphasize the potential for removing nearly all excess chlorine and hydrochloric acid from the intermediate product stream, enhancing the purity of the final carbon tetrachloride product.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
