GB1349769A – Polymerization process
– Google Patents
GB1349769A – Polymerization process
– Google Patents
Polymerization process
Info
Publication number
GB1349769A
GB1349769A
GB5069971A
GB1349769DA
GB1349769A
GB 1349769 A
GB1349769 A
GB 1349769A
GB 5069971 A
GB5069971 A
GB 5069971A
GB 1349769D A
GB1349769D A
GB 1349769DA
GB 1349769 A
GB1349769 A
GB 1349769A
Authority
GB
United Kingdom
Prior art keywords
maleic anhydride
solvent system
poly
peroxide
solvent
Prior art date
1971-11-01
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
GB5069971A
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.)
FMC Corp
Original Assignee
FMC Corp
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.)
1971-11-01
Filing date
1971-11-01
Publication date
1974-04-10
1971-11-01
Application filed by FMC Corp
filed
Critical
FMC Corp
1974-04-10
Publication of GB1349769A
publication
Critical
patent/GB1349769A/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
Abstract
1349769 Polymaleic anhydride FMC CORP 1 Nov 1971 50699/71 Heading C3P Poly(maleic anhydride) is prepared by adding a heated feed mixture maintained at a temperature of 38‹ to 50‹ C. and comprising maleic anhydride, a free-radical polymerization initiator and an inert solvent for maleic anhydride in which the polymeric product is insoluble, to a polymerization reaction zone maintained at an elevated temperature and containing a solvent system comprising an inert solvent for maleic anhydride in which the polymeric product is insoluble and 0 to 25% by weight of maleic anhydride based on the weight of the solvent system, the rate at which the feed mixture is added being controlled to keep the amount of maleic anhydride in the solvent system in the range 0 to 25% by weight, precipitating poly(maleic anhydride) in the solvent for maleic anhydride contained in the reaction zone, and recovering and isolating the poly- (maleic anhydride) product. The monomercontaining molten liquor recovered upon isolating the poly(maleic anhydride) may be admixed with additional maleic anhydride and/or inert solvent for maleic anhydride such that upon return of the molten liquor to the polymerization reaction zone as the solvent system, the composition and volume of the solvent system is at substantially the same level as it was at the initiation of the polymerization reaction. In the examples maleic anhydride is polymerized in the presence of mono-chlorobenzene, diacetyl peroxide in dimethyl phthalate, acetic anhydride, boric oxide, hydrogen peroxide, o – dichlorobenzene, carbon tetrachloride, naphthalene, xylene, di-n-propyl ether, toluene, 2,4-dichlorobenzoyl peroxide, lauroyl peroxide, methyl ethyl ketone peroxide, tbutyl peroxypivalate, di-isopropyl percarbonate and benzene.
GB5069971A
1971-11-01
1971-11-01
Polymerization process
Expired
GB1349769A
(en)
Applications Claiming Priority (3)
Application Number
Priority Date
Filing Date
Title
GB5069971
1971-11-01
DE2154510A
DE2154510A1
(en)
1971-11-01
1971-11-02
METHOD FOR PRODUCING POLYMALIC ACID ANHYDRIDE
FR7140177A
FR2159705A5
(en)
1971-11-01
1971-11-09
Publications (1)
Publication Number
Publication Date
GB1349769A
true
GB1349769A
(en)
1974-04-10
Family
ID=27183805
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5069971A
Expired
GB1349769A
(en)
1971-11-01
1971-11-01
Polymerization process
Country Status (3)
Country
Link
DE
(1)
DE2154510A1
(en)
FR
(1)
FR2159705A5
(en)
GB
(1)
GB1349769A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2732628A1
(en)
*
1976-07-22
1978-01-26
Ciba Geigy Ag
POLYMERIZATION PROCESS
EP0009171A2
(en)
*
1978-09-15
1980-04-02
BASF Aktiengesellschaft
Process for the preparation of polymaleic acid from maleic anhydride in the presence of acetic anhydride and hydrogen peroxyde, and the use of the polymaleic acid thus prepared as builder and as incrustation inhibitor in detergent compositions
US4435298A
(en)
1980-10-23
1984-03-06
Basf Aktiengesellschaft
Ammonium salts of polymaleic acids, and their use as corrosion inhibitors in mineral oils
CN111072828A
(en)
*
2019-12-06
2020-04-28
南通联膦化工有限公司
Synthetic method of hydrolytic polymaleic anhydride
1971
1971-11-01
GB
GB5069971A
patent/GB1349769A/en
not_active
Expired
1971-11-02
DE
DE2154510A
patent/DE2154510A1/en
active
Pending
1971-11-09
FR
FR7140177A
patent/FR2159705A5/fr
not_active
Expired
Cited By (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2732628A1
(en)
*
1976-07-22
1978-01-26
Ciba Geigy Ag
POLYMERIZATION PROCESS
EP0009171A2
(en)
*
1978-09-15
1980-04-02
BASF Aktiengesellschaft
Process for the preparation of polymaleic acid from maleic anhydride in the presence of acetic anhydride and hydrogen peroxyde, and the use of the polymaleic acid thus prepared as builder and as incrustation inhibitor in detergent compositions
EP0009171A3
(en)
*
1978-09-15
1980-04-16
Basf Aktiengesellschaft
Process for the preparation of polymaleic acid from maleic anhydride in the presence of acetic anhydride and hydrogen peroxyde, and the use of the polymaleic acid thus prepared as builder and as incrustation inhibitor in detergent compositions
US4260724A
(en)
1978-09-15
1981-04-07
Basf Aktiengesellschaft
Preparation of polymaleic acids from maleic anhydride in the presence of acetic anhydride and of hydrogen peroxide
US4435298A
(en)
1980-10-23
1984-03-06
Basf Aktiengesellschaft
Ammonium salts of polymaleic acids, and their use as corrosion inhibitors in mineral oils
CN111072828A
(en)
*
2019-12-06
2020-04-28
南通联膦化工有限公司
Synthetic method of hydrolytic polymaleic anhydride
Also Published As
Publication number
Publication date
DE2154510A1
(en)
1973-05-17
FR2159705A5
(en)
1973-06-22
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Legal Events
Date
Code
Title
Description
1974-08-21
PS
Patent sealed [section 19, patents act 1949]
1977-06-01
PLNP
Patent lapsed through nonpayment of renewal fees
