GB264601A - Improvements in hardening phenol-urea-formaldehyde products - Google Patents

Improvements in hardening phenol-urea-formaldehyde products

Info

Publication number
GB264601A
GB264601A GB2661825A GB2661825A GB264601A GB 264601 A GB264601 A GB 264601A GB 2661825 A GB2661825 A GB 2661825A GB 2661825 A GB2661825 A GB 2661825A GB 264601 A GB264601 A GB 264601A
Authority
GB
United Kingdom
Prior art keywords
urea
hardening
phenol
employed
acids
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
GB2661825A
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.)
DAMARD LACQUER Co Ltd
Original Assignee
DAMARD LACQUER Co 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 DAMARD LACQUER Co Ltd filed Critical DAMARD LACQUER Co Ltd
Priority to GB2661825A priority Critical patent/GB264601A/en
Publication of GB264601A publication Critical patent/GB264601A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08L61/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08L61/04, C08L61/18 and C08L61/20

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

264,601. Potter, H. V., Crump, J. W., and Damard Lacquer Co., Ltd. Oct. 23,1925. Urea-aldehyde-phenol condensation products.- The intermediate products prepared by the condensation of ureas, aldehydes and phenols as described in Specification 256,711 are hardened by the addition of strong acids or acidic salts. Acids mentioned are sulphuric, nitric, hydrochloric, phosphoric and oxalic acids; and as salts, aniline hydrochloride, urea nitrate, ammonium chloride, phenylhydrazine hydrcchloride and ammonium sulphocyanide are referred to. The hardening is normally effected in the cold, though heat may also be applied. The rate of hardening depends upon the proportion of phenol to urea used in the preparation of the original syrup, whether an accelerator was employed and if so its type, the nature of the hardening agent and the amount employed. Examples are given of the influence of these factors upon the hardening nf syrups prepared from phenol, urea and formaldehyde. In all cases the hardening agent, which may be employed in quantities of up to 5 per cent of the reacting materials, is stirred into the syrup; at first the latter becomes hard and solid but is still fusible and soluble; finally it becomes infusible and insoluble, though it is slowly disintegrated by alkalies and strong acids.
GB2661825A 1925-10-23 1925-10-23 Improvements in hardening phenol-urea-formaldehyde products Expired GB264601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2661825A GB264601A (en) 1925-10-23 1925-10-23 Improvements in hardening phenol-urea-formaldehyde products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2661825A GB264601A (en) 1925-10-23 1925-10-23 Improvements in hardening phenol-urea-formaldehyde products

Publications (1)

Publication Number Publication Date
GB264601A true GB264601A (en) 1927-01-24

Family

ID=10246452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2661825A Expired GB264601A (en) 1925-10-23 1925-10-23 Improvements in hardening phenol-urea-formaldehyde products

Country Status (1)

Country Link
GB (1) GB264601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767062C (en) * 1937-10-30 1951-08-16 Albert Ag Chem Werke Process for the manufacture of hardened synthetic resin products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767062C (en) * 1937-10-30 1951-08-16 Albert Ag Chem Werke Process for the manufacture of hardened synthetic resin products

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