GB1492821A - Resin based sand binders - Google Patents

Resin based sand binders

Info

Publication number
GB1492821A
GB1492821A GB79875A GB79875A GB1492821A GB 1492821 A GB1492821 A GB 1492821A GB 79875 A GB79875 A GB 79875A GB 79875 A GB79875 A GB 79875A GB 1492821 A GB1492821 A GB 1492821A
Authority
GB
United Kingdom
Prior art keywords
weight
formaldehyde
binder
jan
urea
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
GB79875A
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Priority to GB79875A priority Critical patent/GB1492821A/en
Publication of GB1492821A publication Critical patent/GB1492821A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/224—Furan polymers
    • 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
    • C08G16/00—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00
    • C08G16/02—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00 of aldehydes
    • C08G16/025—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00 of aldehydes with heterocyclic organic compounds
    • C08G16/0256—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00 of aldehydes with heterocyclic organic compounds containing oxygen in the ring
    • C08G16/0262—Furfuryl alcohol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

1492821 Urea-formaldehyde resins; foundry sand BRITISH STEEL CORP (CHEMICALS) Ltd 7 Jan 1976 [8 Jan 1975] 798/75 Headings C3R and C3N A resin binder for foundry sand comprises the reaction product of 15 to 40% by weight of urea, 25 to 45% by weight of formaldehyde, 10 to 30% by weight of furfuryl alcohol and 10 to 30% by weight of a glycol, preferably ethylene glycol. The formaldehyde may be introduced as formalin, paraformaldehyde or a compound which releases formaldehyde under the reaction conditions. Aqueous caustic soda may be mixed with the four reactants and the binder formed by heating under reflux. The binder may be mixed with sand and an acid hardener to form a foundry mould or core.
GB79875A 1976-01-07 1976-01-07 Resin based sand binders Expired GB1492821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB79875A GB1492821A (en) 1976-01-07 1976-01-07 Resin based sand binders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB79875A GB1492821A (en) 1976-01-07 1976-01-07 Resin based sand binders

Publications (1)

Publication Number Publication Date
GB1492821A true GB1492821A (en) 1977-11-23

Family

ID=9710694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB79875A Expired GB1492821A (en) 1976-01-07 1976-01-07 Resin based sand binders

Country Status (1)

Country Link
GB (1) GB1492821A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee