NL6917578A - - Google Patents

Info

Publication number
NL6917578A
NL6917578A NL6917578A NL6917578A NL6917578A NL 6917578 A NL6917578 A NL 6917578A NL 6917578 A NL6917578 A NL 6917578A NL 6917578 A NL6917578 A NL 6917578A NL 6917578 A NL6917578 A NL 6917578A
Authority
NL
Netherlands
Prior art keywords
tetracarboxylic
formamide
specified
dimethyl
dicarboxyphenyl
Prior art date
Application number
NL6917578A
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 filed Critical
Publication of NL6917578A publication Critical patent/NL6917578A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
    • C08G73/1028—Preparatory processes from tetracarboxylic acids or derivatives and diamines characterised by the process itself, e.g. steps, continuous

Abstract

Polyimides are made by reacting approximately equimolar proportions of at least one diamine having the structural formula H2N-R1-NH2 where R1 is a divalent radical containing at least two carbon atoms, the two amino groups of said diamine each attached to separate carbon atoms of said divalent radical; with at least one tetracarboxylic acid dianhydride having the structural formula <FORM:0903271/IV(a)/1> where R is a tetravalent radical containing at least 2 carbon atoms; no more than 2 carbonyl groups of said dianhydride attached to any one carbon atom of said tetravalent radical; in an organic solvent for at least one reactant whose functional groups do not react with either of the reactants to a greater extent than the reactants do with each other, under substantially anhydrous conditions while maintaining the temperature throughout the reaction below 60 DEG C. to provide a polymer containing at least 50% polyamide-acid having a viscosity measured at 30 DEG C. in a 0,5% by weight solution, of at least 0,1 and reacting the polymer with an aliphatic acid anhydride or carbodiimide to convert the polyamide-acid to a polyimide. Many suitable diamines are specified, examples being 4:41-diaminodiphenyl propane, m-xylylene diamine and 1:12-diaminooctadecane. Specified dianhydrides are pyromellitic, 2:3:6:7-naphthalene tetracarboxylic, 1:2:5:6-naphthalene tetracarboxylic, 2:21:3:31-diphenyl tetracarboxylic, 2:2-bis(3:4-dicarboxyphenyl) propane, bis(3:4-dicarboxyphenyl) sulphone, perylene-3:4:9:10-tetracarboxylic, bis(3:4-dicarboxyphenyl) ether and ethylene tetracarboxylic acid dianhydride. Specified solvents are N:N-dimethyl formamide, N:N-dimethyl acetamide, N:N-diethyl formamide, N:N-diethyl acetamide, N:N-dimethylmethoxy acetamide, N-methyl caprolactam, dimethyl sulphoxide, N-methyl-2-pyrrolidone, tetramethylene urea, pyridine, dimethyl sulphone, formamide, N-methyl formamide or N-acetyl pyrrolidone alone or in admixture with benzene, benzonitrile, dioxane, butyrolactone, xylene, toluene or cyclohexane. Specified aliphatic acid anhydrides are acetic, propionic, butyric and valeric anhydride. Many examples are given. Specification 898,651 is referred to.
NL6917578A 1959-04-01 1969-11-21 NL6917578A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US80334859A 1959-04-01 1959-04-01
US80334759A 1959-04-01 1959-04-01
US80334959A 1959-04-01 1959-04-01

Publications (1)

Publication Number Publication Date
NL6917578A true NL6917578A (en) 1970-05-25

Family

ID=27419997

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6917578A NL6917578A (en) 1959-04-01 1969-11-21

Country Status (6)

Country Link
BE (1) BE589179A (en)
CH (1) CH445846A (en)
DE (1) DE1202981C2 (en)
DK (1) DK109110C (en)
GB (1) GB903271A (en)
NL (1) NL6917578A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356759A (en) * 1962-12-19 1967-12-05 Du Pont Composition comprising a polypyromellitimide and a fluorocarbon resin
DE1266427B (en) * 1963-01-08 1968-04-18 Bayer Ag Process for the production of lacquer coatings based on polyisocyanates
US3415782A (en) * 1964-03-30 1968-12-10 Du Pont Formation of polypyromellitimide filaments
US3364166A (en) * 1964-06-30 1968-01-16 Gen Electric Polycarboxylic aromatic imide enamels
DE1283933B (en) * 1964-12-11 1968-11-28 Haveg Industries Inc Electrical conductor
DE1494457A1 (en) * 1965-06-01 1969-12-11 Herberts & Co Gmbh Dr Kurt Process for the production of insulating coatings on electrical conductors
US3356760A (en) * 1967-03-16 1967-12-05 Du Pont Resinous material containing an aromatic polyimide, a fluorocarbon polymer and a polyamide
US3663510A (en) * 1969-05-08 1972-05-16 Gen Electric Process for producing polyamide coating materials
JPS5229293B2 (en) * 1971-08-06 1977-08-01
CA1019888A (en) * 1972-12-29 1977-10-25 General Electric Company Polyetherimides
JPS58145419A (en) * 1982-02-23 1983-08-30 Toray Ind Inc Manufacture of aromatic polyimide film
EP0116297B1 (en) * 1983-01-15 1987-12-02 Akzo GmbH Polyimide laminate with peel-resistance and method of manufacturing it
FR2560601A1 (en) * 1984-03-05 1985-09-06 Rogers Corp CO-SOLVENT ACCELERATOR AND PROCESS FOR TRANSFORMING A POLYIMIDE POLYAMIDE-ACID SOLUTION
DE3411660A1 (en) * 1984-03-29 1985-10-03 Siemens AG, 1000 Berlin und 8000 München METHOD FOR PRODUCING POLYIMIDE AND POLYISOINDOLOCHINAZOLINDION PRE-STAGES
DE3411697A1 (en) * 1984-03-29 1985-10-10 Siemens AG, 1000 Berlin und 8000 München METHOD FOR PRODUCING POLYIMIDE AND POLYISOINDOLOCHINAZOLINDION RELIEF STRUCTURES
JP2573595B2 (en) * 1987-03-09 1997-01-22 鐘淵化学工業株式会社 Polyimide film
US5229039A (en) * 1988-11-11 1993-07-20 International Business Machines Corporation Color liquid crystal display and method of manufacture
WO2013073397A1 (en) * 2011-11-16 2013-05-23 住友電気工業株式会社 Insulating varnish and insulated electrical wire using same
KR102399555B1 (en) * 2018-10-05 2022-05-17 주식회사 엘지화학 Analysis method for dianhydride

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031510B (en) * 1953-10-19 1958-06-04 Du Pont Process for the preparation of polypyromellitic acid imides
US2781359A (en) * 1953-12-21 1957-02-12 Du Pont Cyclohexene-4, 5, 4, 5-tetracarboxylic diimides and preparation of same
US2867609A (en) * 1955-06-13 1959-01-06 Du Pont Preparation of polypyromellitimides
DE1037112B (en) * 1955-10-28 1958-08-21 Basf Ag Process for the production of chipboard

Also Published As

Publication number Publication date
DE1202981B (en) 1965-10-14
CH445846A (en) 1967-10-31
DE1202981C2 (en) 1975-06-12
GB903271A (en) 1962-08-15
BE589179A (en) 1960-09-29
DK109110C (en) 1968-03-18

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