GB1083684A - Improved varnish composition - Google Patents

Improved varnish composition

Info

Publication number
GB1083684A
GB1083684A GB2399366A GB2399366A GB1083684A GB 1083684 A GB1083684 A GB 1083684A GB 2399366 A GB2399366 A GB 2399366A GB 2399366 A GB2399366 A GB 2399366A GB 1083684 A GB1083684 A GB 1083684A
Authority
GB
United Kingdom
Prior art keywords
phenol
varnish
formaldehyde
epoxy resin
cresol
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
GB2399366A
Inventor
Lewis Clary
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1083684A publication Critical patent/GB1083684A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4045—Mixtures of compounds of group C08G18/58 with other macromolecular 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4063—Mixtures of compounds of group C08G18/62 with other macromolecular 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/54—Polycondensates of aldehydes
    • C08G18/542—Polycondensates of aldehydes with phenols
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6212—Polymers of alkenylalcohols; Acetals thereof; Oxyalkylation products thereof
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/80—Masked polyisocyanates
    • C08G18/8061—Masked polyisocyanates masked with compounds having only one group containing active hydrogen
    • C08G18/8064—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with monohydroxy compounds
    • C08G18/8067—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with monohydroxy compounds phenolic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Paints Or Removers (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

A varnish composition comprises (a) 30 to 65% of a polyvinyl formal, (b) 25 to 40% of a blocked isocyanate, (c) 1 to 20% of a phenolformaldehyde resin and (d) 1 to 30% of an epoxy resin. All percentages being by weight of the total solids content of the composition. The isocyanate constituent is preferably the product obtained by condensing 3 moles of 2,4-toluene diisocyanate with one mole of trimethylolpropane, l followed by blocking the triisocyanate obtained by means of phenol. The phenol-formaldehyde constituent is preferably a cresol solution of the condensation product of a mole of cresol with 0.0-2 moles of formaldehyde. The epoxy resin is preferably the condensation product of epichlorohydrin with diphenylolpropane. The composition is obtained by simply mixing the four constituents in a common solvent, e.g. a mixture of cresol and xylene. After application, e.g. to wires, the varnish is heated to provide an enamel coating on the wire.ALSO:Articles particularly electric wires are coated with a varnish comprising (a) 30 to 65% of a polyvinyl formal (b) 25 to 40% of a blocked isocyanate (c) 1 to 20% of a phenol-formaldehyde resin and (d) 1 to 30% of an epoxy resin (see Division C3). In an Example a copper wire is enamelled in six layers using a vertical enamelling machine fitted with six dies, the temperature in the oven varies in a regular manner, the maximum being 400 DEG C in the upper two thirds.
GB2399366A 1965-05-28 1966-05-27 Improved varnish composition Expired GB1083684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR18750A FR1456499A (en) 1965-05-28 1965-05-28 Enamelling varnish, in particular for the windings of hermetic refrigeration units

Publications (1)

Publication Number Publication Date
GB1083684A true GB1083684A (en) 1967-09-20

Family

ID=8580155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2399366A Expired GB1083684A (en) 1965-05-28 1966-05-27 Improved varnish composition

Country Status (8)

Country Link
AT (1) AT271664B (en)
BE (1) BE681759A (en)
CH (1) CH453547A (en)
ES (1) ES327300A1 (en)
FR (1) FR1456499A (en)
GB (1) GB1083684A (en)
LU (1) LU51201A1 (en)
NL (1) NL6606990A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254231A (en) * 1979-09-13 1981-03-03 General Electric Company High solids wire coating compositions for transformers
GB2136001A (en) * 1983-02-16 1984-09-12 Italiane Vernici Ind Insulated electrical conductor and a process for the preparation thereof
GB2200122A (en) * 1987-01-14 1988-07-27 Kollmorgen Corp Bonding compositions for printed circuit boards
CN114230761A (en) * 2021-11-26 2022-03-25 南通百川新材料有限公司 Auxiliary agent for improving bonding strength of self-adhesive wire enamel and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080401A (en) * 1976-08-04 1978-03-21 Henkel Kgaa Heat-resistant adhesives and process for improving the thermal stability of adhesive bonds

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254231A (en) * 1979-09-13 1981-03-03 General Electric Company High solids wire coating compositions for transformers
GB2136001A (en) * 1983-02-16 1984-09-12 Italiane Vernici Ind Insulated electrical conductor and a process for the preparation thereof
GB2200122A (en) * 1987-01-14 1988-07-27 Kollmorgen Corp Bonding compositions for printed circuit boards
DE3800891A1 (en) * 1987-01-14 1988-07-28 Kollmorgen Corp ADHESIVE MEDIUM MIXTURE FOR THE PRODUCTION OF CIRCUIT BOARDS BY THE ADDITIVE PROCESS
GB2200122B (en) * 1987-01-14 1990-10-17 Kollmorgen Corp Bonding compositions for the manufacture of additive printed wiring boards and articles made with the bonding composition
CN114230761A (en) * 2021-11-26 2022-03-25 南通百川新材料有限公司 Auxiliary agent for improving bonding strength of self-adhesive wire enamel and preparation method thereof

Also Published As

Publication number Publication date
LU51201A1 (en) 1966-07-27
ES327300A1 (en) 1967-07-16
FR1456499A (en) 1966-07-08
AT271664B (en) 1969-06-10
NL6606990A (en) 1966-11-29
BE681759A (en) 1966-11-28
CH453547A (en) 1968-06-14

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