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GB703333A - Process for hardening phenol-aldehyde condensates - Google Patents

Process for hardening phenol-aldehyde condensates

Info

Publication number
GB703333A
GB703333A GB6996/49A GB699649A GB703333A GB 703333 A GB703333 A GB 703333A GB 6996/49 A GB6996/49 A GB 6996/49A GB 699649 A GB699649 A GB 699649A GB 703333 A GB703333 A GB 703333A
Authority
GB
United Kingdom
Prior art keywords
phenol
condensate
formaldehyde
paraformaldehyde
para
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
GB6996/49A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB703333A publication Critical patent/GB703333A/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
    • C08G8/28—Chemically modified polycondensates
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of 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; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

Landscapes

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

Abstract

Hardened phenol-aldehyde resins are prepared by adding to a hardenable phenolaldehyde condensate (1) from about 5 to about 40 per cent. (calculated on the hardenable condensate) of polyvinyl alcohol or a derivative in which at least 30 per cent. of the hydroxyl groups are in the free form and (2) from about 5 to about 15 per cent. of paraformaldehyde (based on the polyvinyl alcohol or derivative) and hardening the mixture in presence of an acid catalyst. Specified phenols are phenol itself, the cresols, mixtures of xylenols, paraisobutyl-phenol, para-tertiary butyl-phenol, para-isohexyl-phenol, dihydroxy-diphenyldimethyl methane or mixtures. Specified aldehydes are formaldehyde, acetaldehyde and furfural. Specified polyvinyl alcohol derivatives are the acetals, e.g. from formaldehyde, acetaldehyde, butyraldehyde or crotonaldehyde; the esters, e.g. the acetate or benzoate; or the ethers, e.g. the methyl, ethyl or butyl ether. The phenol aldehyde condensate may be prepared by condensation in alkaline medium or by condensation in alkaline medium followed by condensation in acid medium. In examples (1) A phenol-formaldehyde condensate is hardened in presence of polyvinyl butyral, paraformaldehyde and paratoluene sulphochloride. Benzyl alcohol or triethyl phosphate may be added to the mixture before hardening. (2) A xylenol-formaldehyde condensate is hardened in presence of polyvinyl formal, paraformaldehyde, quartz powder or barium sulphate and para-toluene sulphochloride. Specification 573,437 is referred to.
GB6996/49A 1948-10-01 1950-03-07 Process for hardening phenol-aldehyde condensates Expired GB703333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE703333X 1948-10-01

Publications (1)

Publication Number Publication Date
GB703333A true GB703333A (en) 1954-02-03

Family

ID=6614194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6996/49A Expired GB703333A (en) 1948-10-01 1950-03-07 Process for hardening phenol-aldehyde condensates

Country Status (1)

Country Link
GB (1) GB703333A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917483A (en) * 1956-10-12 1959-12-15 Shawinigan Resins Corp Electrical insulation comprising polyvinyl acetal-phenol aldehydes cured with sulfuric acid
US2917482A (en) * 1956-10-12 1959-12-15 Shawinigan Resins Corp Electrical insulation comprising polyvinyl acetal-phenol aldehydes cured with oxacids of phosphorus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917483A (en) * 1956-10-12 1959-12-15 Shawinigan Resins Corp Electrical insulation comprising polyvinyl acetal-phenol aldehydes cured with sulfuric acid
US2917482A (en) * 1956-10-12 1959-12-15 Shawinigan Resins Corp Electrical insulation comprising polyvinyl acetal-phenol aldehydes cured with oxacids of phosphorus

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