ES266393A1 - Process for making sand cores - Google Patents

Process for making sand cores

Info

Publication number
ES266393A1
ES266393A1 ES0266393A ES266393A ES266393A1 ES 266393 A1 ES266393 A1 ES 266393A1 ES 0266393 A ES0266393 A ES 0266393A ES 266393 A ES266393 A ES 266393A ES 266393 A1 ES266393 A1 ES 266393A1
Authority
ES
Spain
Prior art keywords
formaldehyde
urea
furfuryl alcohol
acid
diethylenetriamine
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
ES0266393A
Other languages
Spanish (es)
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
Publication of ES266393A1 publication Critical patent/ES266393A1/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
    • 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
    • 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)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

Compositions for making cores and moulds consist principally of sand and as a binder therefor a liquid aminoplastic resin which is obtained by reacting together urea, formaldehyde and furfuryl alcohol in the mol. ratios of 1-2 to 1-2 to 1-4. The compositions may also contain an acidic accelerator, e.g. phosphoric acid, sulphuric acid, hydrochloric acid, ammonium phosphate, ammonium chloride, sodium bisulphate or a mixture of sodium bisulphate and glycollic acid. The urea, formaldehyde and furfuryl alcohol may have been reacted together in the presence of a condensing agent, e.g. diethylenetriamine, an alkali metal hydroxide, ammonium hydroxide or calcium hydroxide. In the example, the preparation of a binder from urea, formaldehyde, furfuryl alcohol and diethylenetriamine is described.
ES0266393A 1960-06-13 1961-04-07 Process for making sand cores Expired ES266393A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35406A US3222315A (en) 1960-06-13 1960-06-13 Process for making sand cores

Publications (1)

Publication Number Publication Date
ES266393A1 true ES266393A1 (en) 1961-09-01

Family

ID=21882484

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0266393A Expired ES266393A1 (en) 1960-06-13 1961-04-07 Process for making sand cores

Country Status (7)

Country Link
US (1) US3222315A (en)
BE (1) BE604574A (en)
CH (1) CH402290A (en)
DK (1) DK105077C (en)
ES (1) ES266393A1 (en)
GB (1) GB985175A (en)
LU (1) LU40199A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1411567A (en) * 1972-08-25 1975-10-29 Koninkl Emballage Ind Vna Leer Polyfuran foams and a method of preparing same
US3975318A (en) * 1973-08-14 1976-08-17 Wolff & Kaaber Polyfuran foams and a method of preparing same
US3975319A (en) * 1973-08-14 1976-08-17 Wolff & Kaaber Polyfuran foams and a method of preparing same
DE2831528C3 (en) * 1978-07-18 1983-12-08 Vladimir Arkad'evič Čeljabinsk Širinkin Process for the production of carbamide furan resin
US4246167A (en) * 1979-05-25 1981-01-20 Ashland Oil, Inc. Foundry binder composition
US4371648A (en) * 1980-05-12 1983-02-01 Ashland Oil, Inc. Composition containing furfuryl alcohol and use thereof in foundry binders
US5534612A (en) * 1992-05-19 1996-07-09 Schuller International, Inc. Glass fiber binding compositions, process of making glass fiber binding compositions, process of binding glass fibers, and glass fiber compositions
US6077883A (en) * 1992-05-19 2000-06-20 Johns Manville International, Inc. Emulsified furan resin based glass fiber binding compositions, process of binding glass fibers, and glass fiber compositions
US5459183A (en) * 1993-05-19 1995-10-17 Schuller International, Inc. Low VOC furan resins and method of reducing VOCS in furan resins

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923989A (en) * 1960-02-09 Self-lubricating shell molds
US2335701A (en) * 1942-01-21 1943-11-30 Ellis Foster Co Coating composition and process of making it
US2442118A (en) * 1943-07-29 1948-05-25 Rca Corp Coupling device for high-frequency apparatus
US2468056A (en) * 1944-10-24 1949-04-26 Carborundum Co Abrasive articles and method of manufacturing the same
US2518388A (en) * 1945-04-18 1950-08-08 American Cyanamid Co Resin adhesives and processes of producing same
US2510496A (en) * 1946-12-24 1950-06-06 American Cyanamid Co Furfurylated urea resins and method of preparation
US2634255A (en) * 1949-09-23 1953-04-07 American Cyanamid Co Craze-resistant adhesive having improved storage stability
US3008205A (en) * 1958-09-19 1961-11-14 Gen Motors Corp Shell type molds and cores

Also Published As

Publication number Publication date
DK105077C (en) 1966-08-15
GB985175A (en) 1965-03-03
US3222315A (en) 1965-12-07
CH402290A (en) 1965-11-15
BE604574A (en) 1961-10-02
LU40199A1 (en) 1961-07-31

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