Method for synthesis of lactic acid and its derivatives and catalyst for preparing same
US-2015329458-A1 · Nov 19, 2015 · US
Method for producing salicylic acid ester
US2025179001A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025179001-A1 |
| Application number | US-202318846078-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 22, 2023 |
| Priority date | Mar 23, 2022 |
| Publication date | Jun 5, 2025 |
| Grant date | — |
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Abstract
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A method for producing a salicylic acid ester represented by general formula (2) below, in which salicylic acid and an alcohol represented by general formula (1) below are brought into contact with a solid acid catalyst at a reaction temperature of 50° C. to 200° C. X—R—OH (1) (In the formula (1), R represents a linear or branched alkyl group having 1 to 6 carbon atoms. X represents a hydrogen atom or a hydroxyl group.) (In the formula (2), R and X are each as defined in the formula (1).)
First claim
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1 . A method for producing a salicylic acid ester represented by general formula (2) below, wherein salicylic acid and an alcohol represented by general formula (1) below are brought into contact with a solid acid catalyst at a reaction temperature of 50° C. to 200° C.: X—R—OH (1) (in the formula (1), R represents a linear or branched alkyl group having 1 to 6 carbon atoms. X represents a hydrogen atom or a hydroxyl group), [C1] (in the formula (2), R and X are each as defined in the formula (1)). 2 . The method for producing a salicylic acid ester according to claim 1 , wherein the contact method is a method in which the salicylic acid and the alcohol are passed through a column filled with the solid acid catalyst. 3 . The method for producing a salicylic acid ester according to claim 1 , wherein the solid acid catalyst contains an organic adsorbent or an inorganic adsorbent as a base and has a strong acidic ion exchange group. 4 . The method for producing a salicylic acid ester according to claim 1 , wherein the solid acid catalyst has an average particle diameter of 1 μm to 2000 μm. 5 . The method for producing a salicylic acid ester according to claim 1 , wherein the solid acid catalyst has a specific surface area of 200 m 2 /g to 2000 m 2 /g. 6 . The method for producing a salicylic acid ester according to claim 1 , wherein the reaction temperature is 70° C. to 180° C.
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- What does patent US2025179001A1 cover?
- A method for producing a salicylic acid ester represented by general formula (2) below, in which salicylic acid and an alcohol represented by general formula (1) below are brought into contact with a solid acid catalyst at a reaction temperature of 50° C. to 200° C. X—R—OH (1) (In the formula (1), R represents a linear or branched alkyl group having 1 to 6 carbon atoms. X repres…
- Who is the assignee on this patent?
- Api Corp
- What technology area does this patent fall under?
- Primary CPC classification C07C67/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jun 05 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).