GB1333939A - Electrical conductors coated with polyamideimide resins prepared from the reaction of aromatic diisocyanates with mixtures of polycarboxylic acids and anhydrides - Google Patents
Electrical conductors coated with polyamideimide resins prepared from the reaction of aromatic diisocyanates with mixtures of polycarboxylic acids and anhydridesInfo
- Publication number
- GB1333939A GB1333939A GB1333939DA GB1333939A GB 1333939 A GB1333939 A GB 1333939A GB 1333939D A GB1333939D A GB 1333939DA GB 1333939 A GB1333939 A GB 1333939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyamide
- coats
- wire
- aromatic
- anhydrides
- 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
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
- C08G73/14—Polyamide-imides
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/343—Polycarboxylic acids having at least three carboxylic acid groups
- C08G18/346—Polycarboxylic acids having at least three carboxylic acid groups having four carboxylic acid groups
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—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 H01B3/38 or H01B3/302
- H01B3/306—Polyimides or polyesterimides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/308—Wires with resins
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Organic Insulating Materials (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
1333939 Polyamide-imides SCHENECTADY CHEMICALS Inc 10 Nov 1970 53446/70 Heading C3R [Also in Divisions B2 and H1] An electrical conductor has a continuous coating of a polyamide-imide resin made by reacting (A) 0À95 to 1À01 moles of an aromatic diisocyanate with each mole of (B) a mixture of carboxylic reactants consisting of (i) 5 to 40 mol. per cent of an aromatic dicarboxylic acid in which the COOH groups are not ortho, (ii) 1 to 30 mol. per cent of an aromatic dianhydride and (iii) trimellitic anhydride. Various such reactants are specified as are solvents in which they may be reacted and diluents which may be included in the resulting wire enamel. Such solutions may be applied to copper, silver, aluminium or stainless steel wire by the "free dip" or "die application" procedures described in U.S.A. Specification 3,201,276 with one or more passes to provide the desired build, e.g. at 15 to 45 feet/minute at 250‹ to 800‹ F. to a build of 0À005 to 0À001 inches. The coating may be applied directly to the conductor or over a cured polyester base coat. Various suitable polyesters are mentioned, those from terephthalic acid, ethylene glycol and tris-(2-hydroxyethyl) isocyanurate according to U.S.A. Specification 3,249,578 being preferred. In examples, polyamide-imides are prepared from (A) 4,4<SP>1</SP> - diisocyanato - diphenyl methane, (B) (i) terephthalic acid, (B) (ii) trimellitic and/or benzophenone dianhydride and (B) (iii) trimellitic anhydride in N-methyl pyrrolidone and the products diluted with various diluents and used either to provide 6 coats directly on copper wire or 2 or 3 coats on such a wire having 3 or 4 base coats of the preferred polyester blended with a cresol-formaldehyde resin. Reference is made to Specifications 1,009,956 and 1,217,041.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5344670 | 1970-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1333939A true GB1333939A (en) | 1973-10-17 |
Family
ID=10467836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1333939D Expired GB1333939A (en) | 1970-11-10 | 1970-11-10 | Electrical conductors coated with polyamideimide resins prepared from the reaction of aromatic diisocyanates with mixtures of polycarboxylic acids and anhydrides |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1333939A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4348460A (en) * | 1981-10-19 | 1982-09-07 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US4350738A (en) * | 1981-10-13 | 1982-09-21 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US4378407A (en) * | 1980-01-24 | 1983-03-29 | Sumitomo Electric Industries Ltd. | Magnet wire |
US4385437A (en) * | 1981-10-19 | 1983-05-31 | United Technologies Corporation | Method of power inserting polyamide-imide coated magnet wire |
US4385435A (en) * | 1981-10-13 | 1983-05-31 | United Technologies Corporation | Method of power inserting polyamide-imide coated magnet wire |
US4390590A (en) * | 1981-10-19 | 1983-06-28 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US4406055A (en) * | 1981-10-19 | 1983-09-27 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US20190016849A1 (en) * | 2016-05-24 | 2019-01-17 | Lg Chem, Ltd. | Polyamide-imide, method for preparing same, and polyamide-imide film using same |
-
1970
- 1970-11-10 GB GB1333939D patent/GB1333939A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4378407A (en) * | 1980-01-24 | 1983-03-29 | Sumitomo Electric Industries Ltd. | Magnet wire |
US4350738A (en) * | 1981-10-13 | 1982-09-21 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US4385435A (en) * | 1981-10-13 | 1983-05-31 | United Technologies Corporation | Method of power inserting polyamide-imide coated magnet wire |
US4348460A (en) * | 1981-10-19 | 1982-09-07 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US4385437A (en) * | 1981-10-19 | 1983-05-31 | United Technologies Corporation | Method of power inserting polyamide-imide coated magnet wire |
US4390590A (en) * | 1981-10-19 | 1983-06-28 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US4406055A (en) * | 1981-10-19 | 1983-09-27 | Essex Group, Inc. | Power insertable polyamide-imide coated magnet wire |
US20190016849A1 (en) * | 2016-05-24 | 2019-01-17 | Lg Chem, Ltd. | Polyamide-imide, method for preparing same, and polyamide-imide film using same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |