ES253754A1 - 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
ES253754A1
ES253754A1 ES0253754A ES253754A ES253754A1 ES 253754 A1 ES253754 A1 ES 253754A1 ES 0253754 A ES0253754 A ES 0253754A ES 253754 A ES253754 A ES 253754A ES 253754 A1 ES253754 A1 ES 253754A1
Authority
ES
Spain
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
ES0253754A
Other languages
Spanish (es)
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 ES253754A1 publication Critical patent/ES253754A1/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

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.
ES0253754A 1958-12-11 1959-11-27 Improvements in or relating to the treatment of epoxy resins Expired ES253754A1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES253754A1 true ES253754A1 (en) 1960-05-01

Family

ID=4527720

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0253754A Expired ES253754A1 (en) 1958-12-11 1959-11-27 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)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431756A (en) * 1981-11-13 1984-02-14 Ciba-Geigy Corporation Method of increasing the viscosity of epoxide resin compositions
US4738890A (en) * 1985-04-13 1988-04-19 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
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
FR1243142A (en) 1960-10-07
GB926037A (en) 1963-05-15
NL246167A (en)

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