GB760324A - Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins - Google Patents

Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins

Info

Publication number
GB760324A
GB760324A GB955353A GB955353A GB760324A GB 760324 A GB760324 A GB 760324A GB 955353 A GB955353 A GB 955353A GB 955353 A GB955353 A GB 955353A GB 760324 A GB760324 A GB 760324A
Authority
GB
United Kingdom
Prior art keywords
mixture
urea
formalin
infra
gel
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
GB955353A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB955353A priority Critical patent/GB760324A/en
Publication of GB760324A publication Critical patent/GB760324A/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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • 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
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
    • C08G14/08—Ureas; Thioureas

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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A mouldable resin is made by mixing a monohydric phenol and/or urea with formalin, adding an alkali metal salt containing an amphoteric element in the acid component (e.g. sodium silicate, zincate or aluminate) to obtain a gel, and submitting the gel to the action of infra-red rays until the desired degree of polycondensation is obtained. The salt may form an integral part of the resulting resin. The infra-red rays may be derived from lamps, gas burners or heated metallic elements. In examples: (1) a mixture of formalin, phenol and cresol is added to sodium silicate solution and the mixture stirred to produce a gel which is converted into a solid mass by infra-red rays; the product is mixed with saw-dust, rice-husks, talcum or quartz, zinc or aluminium stearate and dibutyl phthalate and is then moulded; (2) a mixture of formalin and urea is adjusted to pH7.5 with ammonia and allowed to stand; sodium silicate solution is then added to produce a gel which is hardened by infra-red rays; then saw-dust, zinc stearate, zinc oxidie, pentaerythritol, hexamethylene tetramine and ethyl alcohol is added and the mixture left to dry to form a moulding composition; (3) similar to Example 2, but using a mixture of urea, formalin and phenol.
GB955353A 1953-04-08 1953-04-08 Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins Expired GB760324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB955353A GB760324A (en) 1953-04-08 1953-04-08 Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB955353A GB760324A (en) 1953-04-08 1953-04-08 Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins

Publications (1)

Publication Number Publication Date
GB760324A true GB760324A (en) 1956-10-31

Family

ID=9874224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB955353A Expired GB760324A (en) 1953-04-08 1953-04-08 Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins

Country Status (1)

Country Link
GB (1) GB760324A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2635132A1 (en) * 1975-08-04 1977-02-17 Matsushita Electric Works Ltd PROCESS FOR MANUFACTURING PHENOLIC RESIN AND PHENOL-FORMALDEHYDE MATERIAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2635132A1 (en) * 1975-08-04 1977-02-17 Matsushita Electric Works Ltd PROCESS FOR MANUFACTURING PHENOLIC RESIN AND PHENOL-FORMALDEHYDE MATERIAL

Similar Documents

Publication Publication Date Title
ES423053A1 (en) Process for the production of shaped structures resistant to high temperatures
GB571920A (en) Improvements in or relating to moulding compositions containing phenol aldehyde resins
ES2019250A4 (en) PHENOLIC RESIN COMPOSITIONS
GB760324A (en) Process for obtaining mouldable phenol-formaldehyde and urea-formaldehyde resins
GB985175A (en) Amino plastic binders for the production of sand cores
ES454386A1 (en) Method for preparing a granular thermosetting moulding composition containing a novolak having modified surface characteristics
ES8402848A1 (en) Process for producing particulate novolac resins and aqueous dispersions.
GB956260A (en) Process for the production of hardenable boron-containing synthetic resins
US2056462A (en) Manufacture of molded articles from urea and formaldehyde
ES418324A1 (en) Procedure for the manufacture of a three-dimensional or flat structure based on cork particles. (Machine-translation by Google Translate, not legally binding)
US2163264A (en) Condensation products from formaldehyde and urea
US2369439A (en) Reactions between organic nitrogen compounds and reaction products of formaldehyde with sulphamates
US2343497A (en) Urea-formaldehyde composition
ES417941A1 (en) Modified urea resins
GB804055A (en) Process for the preparation of urea-formaldehyde moulding powders
ES433403A1 (en) Production of phenol-formaldehyde resins
US2359166A (en) Plastic composition and process for preparing the same
SU380675A1 (en) COMPOSITION FOR PRESS-POWDERS
GB741390A (en) Improvements in or relating to methods of producing phenol-furfural condensation products
SU39971A1 (en) A method of making artificial resins and pressing products
GB866440A (en) Accelerators for aminoplastic moulding compositions
US2191960A (en) Urea-formaldehyde molding composition and process of making
GB986851A (en) Improvements in or relating to moulding compositions and the coating of sand with a phenol-formaldehyde resin
ES268554A1 (en) Bonding agent for mineral fibres
SU89981A1 (en) The method of obtaining thermosetting modified carbamide resins