GB615335A - Improvements in or relating to the production of phenolic resins - Google Patents

Improvements in or relating to the production of phenolic resins

Info

Publication number
GB615335A
GB615335A GB5859/46A GB585946A GB615335A GB 615335 A GB615335 A GB 615335A GB 5859/46 A GB5859/46 A GB 5859/46A GB 585946 A GB585946 A GB 585946A GB 615335 A GB615335 A GB 615335A
Authority
GB
United Kingdom
Prior art keywords
phenol
mixture
oxide
hexamethylenetetramine
formalin
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
GB5859/46A
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.)
Bakelite Ltd
Original Assignee
Bakelite Ltd
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 Bakelite Ltd filed Critical Bakelite Ltd
Publication of GB615335A publication Critical patent/GB615335A/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
    • 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
    • C08G8/02—Condensation polymers of aldehydes or ketones with phenols only of ketones
    • 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
    • C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
    • C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
    • C08G8/10—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol

Landscapes

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

Abstract

Phenolic resins are produced by mixing a light metal oxide, 1 mol. of an aldehyde, hexamethylenetetramine or a ketone and more than 1 mol. of a phenol or meta-substituted phenol, the pH of the mixture being between 4 and 7, and heating the mixture. The term "light metal oxide" is defined to include an oxide or hydroxide of an alkali metal, alkaline earth metal, zinc, magnesium or aluminium. Suitable phenols are phenol, m-cresol or m-xylenol. The final reaction temperature is preferably above 135 DEG C. Aldehydes mentioned are formaldehyde, acetaldehyde or benzaldehyde. Acetone is mentioned as a ketone. Excess phenol may be distilled off for re-use after the condensation, and the remaining resin may then be reacted with more formaldehyde. In the example, phenol and formalin were mixed and zinc oxide added to produce a pH of 4.7. The mixture was refluxed, and then heated to distil off water. Excess phenol was removed by steam distillation with vacuum, and the intermediate resin heated with more formalin and zinc oxide. The product was mixed with hexamethylenetetramine, lime, stearic acid, pigment and wood flour in usual way to form a moulding powder.
GB5859/46A 1945-02-27 1946-02-25 Improvements in or relating to the production of phenolic resins Expired GB615335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US615335XA 1945-02-27 1945-02-27

Publications (1)

Publication Number Publication Date
GB615335A true GB615335A (en) 1949-01-05

Family

ID=22036377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5859/46A Expired GB615335A (en) 1945-02-27 1946-02-25 Improvements in or relating to the production of phenolic resins

Country Status (1)

Country Link
GB (1) GB615335A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755258A (en) * 1971-05-25 1973-08-28 Weyerhaeuser Co Rapid curing resin compositions comprising a phenol-aldehyde condensation polymer modified with an acyl hydrazide
US4657950A (en) * 1984-10-12 1987-04-14 Acme Resin Corporation Refractory binders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755258A (en) * 1971-05-25 1973-08-28 Weyerhaeuser Co Rapid curing resin compositions comprising a phenol-aldehyde condensation polymer modified with an acyl hydrazide
US4657950A (en) * 1984-10-12 1987-04-14 Acme Resin Corporation Refractory binders

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