GB718493A - Method for preparing condensation products containing a phenol-formaldehyde resin and a polyamide or the like fibre-forming substance - Google Patents

Method for preparing condensation products containing a phenol-formaldehyde resin and a polyamide or the like fibre-forming substance

Info

Publication number
GB718493A
GB718493A GB10764/50A GB1076450A GB718493A GB 718493 A GB718493 A GB 718493A GB 10764/50 A GB10764/50 A GB 10764/50A GB 1076450 A GB1076450 A GB 1076450A GB 718493 A GB718493 A GB 718493A
Authority
GB
United Kingdom
Prior art keywords
phenol
formaldehyde
added
acid
poly
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
GB10764/50A
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.)
KABLO
POVAZSKE CHEMICKE ZD Y
Original Assignee
KABLO
POVAZSKE CHEMICKE ZD Y
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 KABLO, POVAZSKE CHEMICKE ZD Y filed Critical KABLO
Publication of GB718493A publication Critical patent/GB718493A/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
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/38—Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyamides (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

A composition of a phenol-formaldehyde resin and a high molecular weight linear polymer containing -NH-CO- recurring groups is made by first condensing a phenol with aqueous formaldehyde to produce a product consisting predominantly of a phenol alcohol and/or of di-p-dihydroxydiphenyl methane or a substitution derivative thereof and then dissolving the linear polymer therein and completing the phenol-formaldehyde condensation by heating, volatile substances being distilled off simultaneously. The compositions may be used as varnishes for insulating electrical conductors, for moulding, for spraying or for producing sheets. Specified linear polymers are poly-lactams, poly-omega-amino-fatty acids, polycondensates of diamines with dicarboxylic acids, polyesteramides, polyurethanes, polyhydrazides, polyureas and polymeric derivatives of carbamino-acids. Specified phenols are phenol, the cresols, the xylenols, hydroxydiphenyl, naphthol, salicylic acid, catechol and resorcinol. The phenol-formaldehyde condensation may be effected in acid or alkaline medium, or firstly in alkaline medium and then in acid medium or vice versa and preferably 0.75-2.0 mols of formaldehyde are used per mol of phenol. Solvents may be added at the end of the condensation reaction which bind the formaldehyde, e.g. cresylic acid together with diluents, e.g. benzene or its homologues, tetrahydronaphthalene, aliphatic or aromatic alcohols, or solvent naphtha. A softener, plasticizer, dye or pigment may also be added. In an example, phenol is heated with aqueous formaldehyde containing some hexamethylenetetramine at 60 DEG C. and pH8 to produce a product containing 70-80 per cent. of phenol alcohol. Then poly-caprolactam is added, the mixture heated to 60 DEG C. to dissolve the polyamide, the pH lowered to 3 with lactic acid and the mixture heated in vacuo up to 125 DEG C. A solvent mixture of cresylic acid, solvent naphtha and tetrahydronaphthalene is then added, the mixture cooled and a solvent mixture of cresylic acid and ethyl alcohol added to produce an enamel. Specification 545,941 and U.S.A. Specification 2,378,667 are referred to.
GB10764/50A 1949-05-03 1950-05-02 Method for preparing condensation products containing a phenol-formaldehyde resin and a polyamide or the like fibre-forming substance Expired GB718493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS718493X 1949-05-03

Publications (1)

Publication Number Publication Date
GB718493A true GB718493A (en) 1954-11-17

Family

ID=5455092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10764/50A Expired GB718493A (en) 1949-05-03 1950-05-02 Method for preparing condensation products containing a phenol-formaldehyde resin and a polyamide or the like fibre-forming substance

Country Status (1)

Country Link
GB (1) GB718493A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5492980A (en) * 1992-10-12 1996-02-20 Kishimoto Sangyo Co., Ltd. Thermoplastic molding resin composition
US5650226A (en) * 1987-05-25 1997-07-22 Atochem Metal substrate coated with polyamide-based coating powders

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650226A (en) * 1987-05-25 1997-07-22 Atochem Metal substrate coated with polyamide-based coating powders
US6123987A (en) * 1987-05-25 2000-09-26 Elf Atochem S.A. Polyamide-based coating powders
US5492980A (en) * 1992-10-12 1996-02-20 Kishimoto Sangyo Co., Ltd. Thermoplastic molding resin composition

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