GB1102273A – Polyitaconic anhydride and process for preparing polyitaconic anhydride and polyitaconic acid
– Google Patents
GB1102273A – Polyitaconic anhydride and process for preparing polyitaconic anhydride and polyitaconic acid
– Google Patents
Polyitaconic anhydride and process for preparing polyitaconic anhydride and polyitaconic acid
Info
Publication number
GB1102273A
GB1102273A
GB1849165A
GB1849165A
GB1102273A
GB 1102273 A
GB1102273 A
GB 1102273A
GB 1849165 A
GB1849165 A
GB 1849165A
GB 1849165 A
GB1849165 A
GB 1849165A
GB 1102273 A
GB1102273 A
GB 1102273A
Authority
GB
United Kingdom
Prior art keywords
anhydride
polyitaconic
acid
itaconic
catalyst
Prior art date
1964-05-02
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
GB1849165A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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.)
1964-05-02
Filing date
1965-05-03
Publication date
1968-02-07
1965-05-03
Application filed by Hoechst AG, Farbwerke Hoechst AG
filed
Critical
Hoechst AG
1968-02-07
Publication of GB1102273A
publication
Critical
patent/GB1102273A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C08F22/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
C08F22/04—Anhydrides, e.g. cyclic anhydrides
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C08F8/00—Chemical modification by after-treatment
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C08F8/00—Chemical modification by after-treatment
C08F8/12—Hydrolysis
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C08F8/00—Chemical modification by after-treatment
C08F8/42—Introducing metal atoms or metal-containing groups
Abstract
Homopolymers of itaconic anhydride are claimed per se which may be converted to the acid by treatment with water. The polyitaconic anhydride may be prepared by polymerization in an inert organic solvent from which the polymer separates as a finely divided powder, e.g. benzene, chloroform and/or petroleum ether, and in the presence of a catalyst, e.g. dibenzoyl or dilauryl peroxide, diisopropyl or dicyclohexyl percarbonate, or azoisobutyronitrile, and optionally a co-catalyst, e.g. cobalt oleate, which is soluble in organic solvents. The catalysts may be added continuously during polymerization. The polyitaconic anhydride while being dissolved in water may be heated and evolves carbon dioxide, or the solution may be treated with ferric chloride solution to produce an iron complex. The polyitaconic anhydride may be dissolved in methanol to produce the semi-ester.ALSO:Itaconic anhydride is prepared from itaconic acid by heating the acid with acetyl chloride and then distilling off the excess acetyl chloride under atmospheric pressure and the acetic acid formed under vacuo, the temperature being kept below 90 DEG C. to prevent the itaconic anhydride from being converted to citraconic anhydride.
GB1849165A
1964-05-02
1965-05-03
Polyitaconic anhydride and process for preparing polyitaconic anhydride and polyitaconic acid
Expired
GB1102273A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DEF0042778
1964-05-02
Publications (1)
Publication Number
Publication Date
GB1102273A
true
GB1102273A
(en)
1968-02-07
Family
ID=7099249
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1849165A
Expired
GB1102273A
(en)
1964-05-02
1965-05-03
Polyitaconic anhydride and process for preparing polyitaconic anhydride and polyitaconic acid
Country Status (5)
Country
Link
AT
(1)
AT260535B
(en)
BE
(1)
BE663362A
(en)
CH
(1)
CH441765A
(en)
GB
(1)
GB1102273A
(en)
NL
(1)
NL6505476A
(en)
1965
1965-04-29
NL
NL6505476A
patent/NL6505476A/xx
unknown
1965-04-30
CH
CH603365A
patent/CH441765A/en
unknown
1965-04-30
AT
AT396965A
patent/AT260535B/en
active
1965-05-03
GB
GB1849165A
patent/GB1102273A/en
not_active
Expired
1965-05-03
BE
BE663362D
patent/BE663362A/xx
unknown
Also Published As
Publication number
Publication date
CH441765A
(en)
1967-08-15
AT260535B
(en)
1968-03-11
NL6505476A
(en)
1965-11-03
BE663362A
(en)
1965-11-03
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