GB1116798A - Epoxy resin curing agents - Google Patents

Epoxy resin curing agents

Info

Publication number
GB1116798A
GB1116798A GB45232/65A GB4523265A GB1116798A GB 1116798 A GB1116798 A GB 1116798A GB 45232/65 A GB45232/65 A GB 45232/65A GB 4523265 A GB4523265 A GB 4523265A GB 1116798 A GB1116798 A GB 1116798A
Authority
GB
United Kingdom
Prior art keywords
anhydride
mixtures
liquid
solid
acid
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
GB45232/65A
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.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
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 Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Publication of GB1116798A publication Critical patent/GB1116798A/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
    • C08G59/4215—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof cycloaliphatic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/567—Preparation of carboxylic acid anhydrides by reactions not involving carboxylic acid anhydride groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Furan Compounds (AREA)
  • Epoxy Resins (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Epoxy resins are cured with mixtures of liquid, isomeric cyclo olefinic anhydrides, prepared by catalytic isomerization of a solid cyclo olefinic anhydride (see Division C2). In examples, mixtures of D 1 - and D 4 - isomers of tetrahydro phthalic acid anhydride, and of its 3- or 4-methyl derivatives are used to cure an epoxy resin derived from bisphenol A and diglycidyl ether.ALSO:Mixtures of isomeric cyclo olefinic acid anhydrides, liquid at ambient temperatures, are made by heating a normally solid cyclo olefinic acid anhydride to above its M.P., isomerizing the molten anhydride in an anhydrous atmosphere in the presence of a solid, particulate, acid isomerization catalyst which is insoluble in the anhydride at contact conditions including a temp. in the range 100-250 DEG C., a contact time of 5-480 min. and a pressure of 1-5 At., and cooling the liquid obtained. Specified starting compounds are D 4-tetrahydro-phthalic anhydride, and its 3- and 4-methyl derivatives. The catalyst may be a silica-alumina, or an ion-exchange resin. The products are used to cure epoxy resins (see Division C3).
GB45232/65A 1964-11-06 1965-10-26 Epoxy resin curing agents Expired GB1116798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40956264A 1964-11-06 1964-11-06

Publications (1)

Publication Number Publication Date
GB1116798A true GB1116798A (en) 1968-06-12

Family

ID=23621039

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45232/65A Expired GB1116798A (en) 1964-11-06 1965-10-26 Epoxy resin curing agents

Country Status (3)

Country Link
DE (1) DE1518509A1 (en)
FR (1) FR1455507A (en)
GB (1) GB1116798A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115043805A (en) * 2022-06-07 2022-09-13 嘉兴学院 Method for preparing liquid methyl tetrahydrophthalic anhydride by isomerization catalysis

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH459564A (en) * 1965-12-10 1968-07-15 Ciba Geigy New thermosetting mixtures of epoxy resins and isomerized polycarboxylic acid anhydrides
DE3239055A1 (en) * 1982-10-22 1984-04-26 Chemische Werke Hüls AG, 4370 Marl METHOD FOR PRODUCING ISOMERS OF THE 4-METHYLTETRAHYDROPHTHALIC ACID DERIVATIVES AND / OR TETRAHYDROPHTHALIC ACID DERIVATIVES, ESPECIALLY THEIR ANHYDRIDES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115043805A (en) * 2022-06-07 2022-09-13 嘉兴学院 Method for preparing liquid methyl tetrahydrophthalic anhydride by isomerization catalysis

Also Published As

Publication number Publication date
DE1518509A1 (en) 1969-03-20
FR1455507A (en) 1966-04-01

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