GB1425773A - Process for the preparation of epoxy resins by interfacial condensation - Google Patents

Process for the preparation of epoxy resins by interfacial condensation

Info

Publication number
GB1425773A
GB1425773A GB4138873A GB4138873A GB1425773A GB 1425773 A GB1425773 A GB 1425773A GB 4138873 A GB4138873 A GB 4138873A GB 4138873 A GB4138873 A GB 4138873A GB 1425773 A GB1425773 A GB 1425773A
Authority
GB
United Kingdom
Prior art keywords
epoxy resins
hydrogen
compound
water
reaction
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
GB4138873A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB4138873A priority Critical patent/GB1425773A/en
Publication of GB1425773A publication Critical patent/GB1425773A/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
    • C08G59/02—Polycondensates containing more than one epoxy group per molecule
    • C08G59/04—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof
    • C08G59/06—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
    • C08G59/063—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols with epihalohydrins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Epoxy Compounds (AREA)

Abstract

1425773 Epoxy resins DOW CHEMICAL CO 3 Sept 1973 41388/73 Heading C3B A process for preparing solid epoxy resins by interfacial condensation comprises reacting an aromatic polyhydroxyl-containing compound with a halohydrin in the presence of an alkaline dehydrohalogenating agent, e.g. NaOH or Na 2 CO 3 , for a reaction of from 2-10 minutes and at a temperatore of from 75-160‹ C. wherein water is used as the sole reaction medium in an amount of from 3-20 p.b.w. of water per each p.b.w. of the combined weights of the reactants. Suitable polyhydroxyl compounds are resorcinol, catechol, hydroquinone; or a compound of the formula wherein A is a C 1 -C 4 alkylene or alkylidene group, -S-, -SS-, -O-, -SO-, -SO 2 - or -CO- and R and R 1 are hydrogen, chlorine or bromine; or a compound of the formula where R is hydrogen, a C 1 -C 4 alkyl group, X is hydrogen, Cl, Br or a C 1 -C 4 alkyl group and n has an average value of 0À01-0À5. Suitable halohydrin compounds are glycerine dichloro- (or dibromo-)hydrin, or an epihalohydrin. The reaction is preferably carried out while mixing with a high shear mixer. In the examples epoxy resins are prepared from p,p<SP>1</SP>-isopylidene diphenol, epichlorohydrin in the presence of sodium hydroxide and water. Uses.-Coatings.
GB4138873A 1973-09-03 1973-09-03 Process for the preparation of epoxy resins by interfacial condensation Expired GB1425773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4138873A GB1425773A (en) 1973-09-03 1973-09-03 Process for the preparation of epoxy resins by interfacial condensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4138873A GB1425773A (en) 1973-09-03 1973-09-03 Process for the preparation of epoxy resins by interfacial condensation

Publications (1)

Publication Number Publication Date
GB1425773A true GB1425773A (en) 1976-02-18

Family

ID=10419466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4138873A Expired GB1425773A (en) 1973-09-03 1973-09-03 Process for the preparation of epoxy resins by interfacial condensation

Country Status (1)

Country Link
GB (1) GB1425773A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237259A (en) * 1978-12-06 1980-12-02 General Electric Company Organic materials having meta, para-isopropylidene diphenoxy units and method
US4268647A (en) * 1978-12-06 1981-05-19 General Electric Company Organic materials having meta, para-isopropylidene diphenoxy units and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237259A (en) * 1978-12-06 1980-12-02 General Electric Company Organic materials having meta, para-isopropylidene diphenoxy units and method
US4268647A (en) * 1978-12-06 1981-05-19 General Electric Company Organic materials having meta, para-isopropylidene diphenoxy units and method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees