GB923773A - Improvements in or relating to hardened epoxy resins - Google Patents

Improvements in or relating to hardened epoxy resins

Info

Publication number
GB923773A
GB923773A GB2674760A GB2674760A GB923773A GB 923773 A GB923773 A GB 923773A GB 2674760 A GB2674760 A GB 2674760A GB 2674760 A GB2674760 A GB 2674760A GB 923773 A GB923773 A GB 923773A
Authority
GB
United Kingdom
Prior art keywords
mol
alcohol
specified
mols
butanol
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
GB2674760A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of GB923773A publication Critical patent/GB923773A/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
    • 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
    • C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
    • C08G59/4223—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof aromatic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Epoxy Resins (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

In examples iron sheets are coated with solutions of an epoxy-resin derived from p,p1-diphenylol-2,2-propane and epichlorhydrin and partial esters of 1 mol. pyromellitic acid dianhydride with (1) 2 mols. n-butanol, (2) 2 mols. of b -ethylhexanol, (3) 1 mol. n-dodecyl alcohol, and (5) as (1). Solvents used are butanol/xylene, and acetone/butanone/xylene. After the solvent is evaporated off the coated sheet is fired at 22 DEG C. for 1 hour.ALSO:Epoxy compounds containing more than one epoxy group per molecule are mixed with the partial ester formed (see Group IV(b)) from a tribasic to hexabasic benzene carboxylic acid or the anhydride thereof and a monohydric alcohol, the partial ester having at least two free carboxyl groups per molecule, and are heated at 100-300 DEG C. to form a hardened resin. Acids specified are trimellitic, trimesic, pyromellitic, benzene pentacarboxylic, and mellitic, and anyhdrides thereof. Alcohols specified are methanol, ethanol, propanols, butanols, pentanols, octanols, dodecanols and oleyl alcohol. Epoxy compounds specified are bisphenol A or polycarboxylic acid/epichlorohydrin condensates. Solvents specified are butanol, xylene, butanone, acetone, and mixtures thereof.ALSO:Partial esters, having at least two free carboxyl groups per molecule, are formed from a trisbasic to hexabasic benzene carboxylic acid or the anhydride thereof and a monohydric alcohol. Acids specified are trimellitic, trimesic, pyromellitic, benzene pentacarboxylic and mellitic and anhydrides thereof. Alcohols specified are methanol, ethanol, propanols, butanols, pentanols, octanols, dodecanols and oleyl alcohol. The reaction is carried out with the appropriate quantity of, and at the boiling temperature of, the appropriate alcohol; if necessary, under pressure. The following reactions were carried out in the examples:-1 mol pyromellitic dianhydride and (1) 2 mols n-butanol, (2) 2 mols b -ethylhexanol, (3) 1 mol n-dodecyl alcohol in the presence of methylethyl and methyl isobutyl ketones, and (4) 1 mol n-dodecyl alcohol, (6) 1 mol trimellitic anhydride and 1 mol n-dodecyl alcohol in the presence of acetone and methyl isobutyl ketone.
GB2674760A 1959-08-26 1960-08-02 Improvements in or relating to hardened epoxy resins Expired GB923773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB54561A DE1115014B (en) 1959-08-26 1959-08-26 Process for hardening synthetic resins containing epoxy groups

Publications (1)

Publication Number Publication Date
GB923773A true GB923773A (en) 1963-04-18

Family

ID=6970654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2674760A Expired GB923773A (en) 1959-08-26 1960-08-02 Improvements in or relating to hardened epoxy resins

Country Status (5)

Country Link
BE (1) BE593934A (en)
CH (1) CH413384A (en)
DE (1) DE1115014B (en)
GB (1) GB923773A (en)
NL (1) NL254978A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050940A1 (en) * 1980-10-27 1982-05-05 Imperial Chemical Industries Plc Process of coating using mixed solutions of an epoxy resin and of acid anhydride curing agents

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4527145B2 (en) * 2007-11-12 2010-08-18 三菱電機株式会社 Electric power steering motor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL79847C (en) * 1949-08-12
DE1055812B (en) * 1955-02-14 1959-04-23 Bergwerksverband Gmbh Process for the production of polyesters from tri- and polybasic carboxylic acids
DE1032351B (en) * 1955-09-26 1958-06-19 Licentia Gmbh Conductor insulation made from a cast resin based on epoxy resin, especially for winding insulation in electrical machines
DE1033407B (en) * 1957-03-12 1958-07-03 Basf Ag Process for hardening glycidyl polyethers
DE1040783B (en) * 1957-09-07 1958-10-09 Henkel & Cie Gmbh Process for the production of hardened plastics based on polyesters and epoxy compounds
DE1054705B (en) * 1958-01-20 1959-04-09 Leuna Werke Veb Process for optionally multi-stage curing of epoxy resins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050940A1 (en) * 1980-10-27 1982-05-05 Imperial Chemical Industries Plc Process of coating using mixed solutions of an epoxy resin and of acid anhydride curing agents

Also Published As

Publication number Publication date
BE593934A (en)
CH413384A (en) 1966-05-15
NL254978A (en)
DE1115014B (en) 1961-10-12

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