Production method for isocyanate compound
US-2022002234-A1 · Jan 6, 2022 · US
Method for producing halogenated carbonyl
US12421121B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12421121-B2 |
| Application number | US-202017639751-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 2, 2020 |
| Priority date | Sep 5, 2019 |
| Publication date | Sep 23, 2025 |
| Grant date | Sep 23, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The objective of the present invention is to provide a method for producing a halogenated carbonyl safely and efficiently. The method for producing a halogenated carbonyl according to the present invention is characterized in comprising the step of applying ultrasound to a composition containing a C 1-4 halogenated hydrocarbon having one or more halogeno groups selected from the group consisting of chloro, bromo and iodo in the presence of oxygen to decompose the C 1-4 halogenated hydrocarbon.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a halogenated carbonyl, the method comprising the step of applying ultrasound to a composition containing a C 1-4 halogenated hydrocarbon having one or more halogeno groups selected from the group consisting of chloro, bromo and iodo under a stream of a gas containing oxygen or with supplying a gas containing oxygen into the composition by bubbling to decompose the C 1-4 halogenated hydrocarbon with or without irradiating a high energy light having a peak wavelength included in a range of 180 nm or more and 280 nm or less. 2. The method according to claim 1 , wherein the high energy light having a peak wavelength included in a range of 180 nm or more and 280 nm or less is irradiated to the composition. 3. The method according to claim 1 , wherein a frequency of the ultrasound is 20 kHz or more and 100 kHz or less. 4. The method according to claim 1 , wherein power of the ultrasound applied to the composition is 0.05 W/cm 2 or more and 10 W/cm 2 or less per a surface area of the composition to which the ultrasound is applied. 5. The method according to claim 1 , wherein a C 1-2 polyhalogenated hydrocarbon is used as the C 1-4 halogenated hydrocarbon. 6. The method according to claim 1 , wherein a mixture of dichloromethane and tetrachloromethane is used as the C 1-4 halogenated hydrocarbon. 7. The method according to claim 2 , wherein a C 1-2 polyhalogenated hydrocarbon is used as the C 1-4 halogenated hydrocarbon. 8. The method according to claim 2 , wherein a mixture of dichloromethane and tetrachloromethane is used as the C 1-4 halogenated hydrocarbon.
Assignees
Inventors
Classifications
Esters of carbonic or haloformic acids · CPC title
The ring being saturated · CPC title
with formation of the N-C(O)-N moiety · CPC title
Preparation of esters of carbonic or haloformic acids · CPC title
- C01B32/80Primary
Phosgene · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12421121B2 cover?
- The objective of the present invention is to provide a method for producing a halogenated carbonyl safely and efficiently. The method for producing a halogenated carbonyl according to the present invention is characterized in comprising the step of applying ultrasound to a composition containing a C 1-4 halogenated hydrocarbon having one or more halogeno groups selected from the group consisti…
- Who is the assignee on this patent?
- Univ Kobe Nat Univ Corp, Mitsubishi Gas Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C01B32/80. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 23 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).