[go: up one dir, main page]

GB926037A - Improvements in or relating to the treatment of epoxy resins - Google Patents

Improvements in or relating to the treatment of epoxy resins

Info

Publication number
GB926037A
GB926037A GB4208359A GB4208359A GB926037A GB 926037 A GB926037 A GB 926037A GB 4208359 A GB4208359 A GB 4208359A GB 4208359 A GB4208359 A GB 4208359A GB 926037 A GB926037 A GB 926037A
Authority
GB
United Kingdom
Prior art keywords
epoxy resin
treated
borate
silicate
temperature
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
GB4208359A
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.)
Rheinmetall Air Defence AG
Maschinenfabrik Oerlikon AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Maschinenfabrik Oerlikon 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.)
Filing date
Publication date
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG, Maschinenfabrik Oerlikon AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of GB926037A publication Critical patent/GB926037A/en
Expired legal-status Critical Current

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
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • 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
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
    • C08G59/4078—Curing agents not provided for by the groups C08G59/42 - C08G59/66 boron containing compounds
    • 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
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
    • C08G59/4085—Curing agents not provided for by the groups C08G59/42 - C08G59/66 silicon containing compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Insulating Of Coils (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Organic Insulating Materials (AREA)

Abstract

A treatment of epoxy resins prior to hardening comprises evacuating at a temperature of 80 DEG to 180 DEG C. and at a pressure of less than 5 mm. Hg. an epoxy resin which contains not more than one hydroxyl group in the molecule and has an epoxy equivalent of between 165 and 400, restoring normal pressure, and stirring into the hot melt 0,1 to 40 parts per 100 parts by weight of resin of a trialkyl borate or tetraalkyl orthosilicate, whereupon the vacuum treatment is repeated to remove the volatile reaction products of epoxy resin and borate or silicate. Specified reactants are the tri-methyl, ethyl, propyl, isobutyl and isoamyl borates, and methyl and ethyl orthosilicates. In the reaction, the alcohol is given off and a glycidyl polyether borate or silicate is formed. The latter will harden only after the addition of hardening agents. In the examples, glycidyl polyethers are treated as above and are hardened in (4) with dodecenyl succinic anhydride, (5) with hexahydrophthalic anhydride, and ground quartz added, to form coatings, and (6) with hexahydrophthalic anhydride and used to impregnate mica-glass fabric insulation. Specification 819,191 is referred to.ALSO:For the preparation of a temperature-resistant, high-voltage insulation, several layers of an absorptive mica-glass fabric strip are wound around the copper conductor and dried at 140 DEG C. under 0,1 mm. pressure; the temperature is reduced to 60 DEG C. and the wrapping is vacuum impregnated with a preheated mixture of a treated epoxy resin and hexahydrophthalic anhydride hardener. The epoxy resin is one which has been treated by reacting with tetraethyl silicate (see Group IV(a)). After restoring normal pressure, the impregnated layer is calibrated to size by pressing on all sides and is then cured at 170 DEG C. Specification 819,191 is referred to.
GB4208359A 1958-12-11 1959-12-10 Improvements in or relating to the treatment of epoxy resins Expired GB926037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6717458 1958-12-11

Publications (1)

Publication Number Publication Date
GB926037A true GB926037A (en) 1963-05-15

Family

ID=4527720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4208359A Expired GB926037A (en) 1958-12-11 1959-12-10 Improvements in or relating to the treatment of epoxy resins

Country Status (4)

Country Link
ES (1) ES253754A1 (en)
FR (1) FR1243142A (en)
GB (1) GB926037A (en)
NL (1) NL246167A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079857A1 (en) * 1981-11-13 1983-05-25 Ciba-Geigy Ag Process for increasing the viscosity of mixtures containing epoxy resins
GB2173524A (en) * 1985-04-13 1986-10-15 Matsushita Electric Works Ltd Resin-impregnated base and method of manufacturing same
US5346939A (en) * 1993-01-25 1994-09-13 Minnesota Mining And Manufacturing Company Water curable resin compositions
US5364693A (en) * 1993-01-25 1994-11-15 Minnesota Mining And Manufacturing Company Orthopedic support materials
CN117255474A (en) * 2023-09-26 2023-12-19 广东格斯泰科技有限公司 High-temperature-resistant resin-based copper-clad laminate and preparation method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079857A1 (en) * 1981-11-13 1983-05-25 Ciba-Geigy Ag Process for increasing the viscosity of mixtures containing epoxy resins
US4431756A (en) * 1981-11-13 1984-02-14 Ciba-Geigy Corporation Method of increasing the viscosity of epoxide resin compositions
GB2173524A (en) * 1985-04-13 1986-10-15 Matsushita Electric Works Ltd Resin-impregnated base and method of manufacturing same
US4738890A (en) * 1985-04-13 1988-04-19 Matsushita Electric Works, Ltd. Resin-impregnated base and method of manufacturing same
GB2173524B (en) * 1985-04-13 1989-09-20 Matsushita Electric Works Ltd Resin-impregnated base and method of manufacturing same
US5346939A (en) * 1993-01-25 1994-09-13 Minnesota Mining And Manufacturing Company Water curable resin compositions
US5364693A (en) * 1993-01-25 1994-11-15 Minnesota Mining And Manufacturing Company Orthopedic support materials
CN117255474A (en) * 2023-09-26 2023-12-19 广东格斯泰科技有限公司 High-temperature-resistant resin-based copper-clad laminate and preparation method thereof
CN117255474B (en) * 2023-09-26 2024-03-26 广东格斯泰科技有限公司 High-temperature-resistant resin-based copper-clad laminate and preparation method thereof

Also Published As

Publication number Publication date
ES253754A1 (en) 1960-05-01
FR1243142A (en) 1960-10-07
NL246167A (en)

Similar Documents

Publication Publication Date Title
JPS6035942A (en) Method of processing electric winding
GB926037A (en) Improvements in or relating to the treatment of epoxy resins
DE2965535D1 (en) Curing agent for polyepoxides, curable epoxy resin compositions, hardened products therefrom and process for curing a polyepoxide
GB1006849A (en) Production of cured resin bodies
ES8608020A1 (en) Epoxy resin composition and a process for preparing laminates therefrom.
ES8607804A1 (en) Method of fabricating composite or encapsulated articles.
US2922734A (en) Fabrication of electrical windings
JPS54157201A (en) Wire manufacturing method for electric machine
GB2017711A (en) Process for accelerated cure of epoxy resins
KR830002829A (en) Improved manufacturing method of flammable mica insulating tape
US2928964A (en) Dynamoelectric machine winding coil with coil sides and end turns of different flexibility
GB822828A (en) Catalysts and a process for preparing the same
JPS5458795A (en) Preparation of curing agent for epoxy resin
GB766817A (en) Ethoxyline resin compositions
ES445697A1 (en) Method of impregnating and drying materials and installations for carrying out this method
GB920656A (en) Method of impregnating and covering electric windings
JPS6130413B2 (en)
JPS55120121A (en) Manufacture of resin-molded coil
JPS5445701A (en) Method for manufacturing stator of flat-type motor
JPS5578016A (en) Epoxy resin curing agent
JPS5586653A (en) Mold forming method using microwave
JPS54159604A (en) Insulating method winding of electric machine
JPS52101285A (en) Cure acceleration method
ES327014A1 (en) Procedure for the preparation of pre-purpose superficial structures. (Machine-translation by Google Translate, not legally binding)
ES265699A3 (en) Procedure to insulate conductors and electrical elements (Machine-translation by Google Translate, not legally binding)