GB825932A - Improvements in or relating to the treatment of ricinoleic acid and its esters - Google Patents

Improvements in or relating to the treatment of ricinoleic acid and its esters

Info

Publication number
GB825932A
GB825932A GB1723/56A GB172356A GB825932A GB 825932 A GB825932 A GB 825932A GB 1723/56 A GB1723/56 A GB 1723/56A GB 172356 A GB172356 A GB 172356A GB 825932 A GB825932 A GB 825932A
Authority
GB
United Kingdom
Prior art keywords
ester
ricinoleate
acid
ricinoleic acid
esters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1723/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Organico
Original Assignee
Organico
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Organico filed Critical Organico
Publication of GB825932A publication Critical patent/GB825932A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
    • C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
    • C07C45/512—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being a free hydroxyl group
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides

Abstract

Ricinoleic acid or an ester thereof is pyrolysed in admixture with water vapour to yield n-heptaldehyde and undecylenic acid or an ester thereof. The acid or ester is preferably admixed with 0.3-3.0 times its weight of water vapour and heated to pyrolysis temperature in a separate zone or dispersed in superheated steam. Heating is effected at 500-700 DEG C. generally for less than 5 seconds and suitably by passage over or through extended surfaces of heat-conducting material such as steel, graphite or molten lead. Conditions are preferably such as to give 70-95% decomposition of ricinoleate per pass. Products ar cooled rapidly, freed from water, and fractionated in vacuo. Esters of aliphatic alcohols of up to 4 carbon atoms are preferred starting materials. In examples, methyl ricinoleate obtained by alcoholysis of commercial castor oil, isopropyl ricinoleate, castor oil, and ricinoleic acid are treated.
GB1723/56A 1955-01-21 1956-01-18 Improvements in or relating to the treatment of ricinoleic acid and its esters Expired GB825932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR825932X 1955-01-21

Publications (1)

Publication Number Publication Date
GB825932A true GB825932A (en) 1959-12-23

Family

ID=9282580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1723/56A Expired GB825932A (en) 1955-01-21 1956-01-18 Improvements in or relating to the treatment of ricinoleic acid and its esters

Country Status (1)

Country Link
GB (1) GB825932A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2921364A1 (en) * 2007-09-20 2009-03-27 Arkema France PROCESS FOR COPRODUCTION OF METHYL 7-OXOHEPTANOATE AND UNDECYLENE ACID FROM RICINOLEIC ACID
CN114685263A (en) * 2020-12-31 2022-07-01 中国石油化工股份有限公司 Method and device for preparing dimer acid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2921364A1 (en) * 2007-09-20 2009-03-27 Arkema France PROCESS FOR COPRODUCTION OF METHYL 7-OXOHEPTANOATE AND UNDECYLENE ACID FROM RICINOLEIC ACID
WO2009047446A3 (en) * 2007-09-20 2009-08-06 Arkema France Method for the coproduction of methyl 7-oxoheptanoate and undecylenic acid from ricinoleic acid
CN114685263A (en) * 2020-12-31 2022-07-01 中国石油化工股份有限公司 Method and device for preparing dimer acid

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