GB918813A - Improvements in and relating to foundry core compositions - Google Patents

Improvements in and relating to foundry core compositions

Info

Publication number
GB918813A
GB918813A GB12114/61A GB1211461A GB918813A GB 918813 A GB918813 A GB 918813A GB 12114/61 A GB12114/61 A GB 12114/61A GB 1211461 A GB1211461 A GB 1211461A GB 918813 A GB918813 A GB 918813A
Authority
GB
United Kingdom
Prior art keywords
mixture
ammonium
added
urea
formaldehyde
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
GB12114/61A
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.)
Quaker Oats Co
Original Assignee
Quaker Oats Co
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 Quaker Oats Co filed Critical Quaker Oats Co
Publication of GB918813A publication Critical patent/GB918813A/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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S524/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S524/906—Multipackage compositions

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)

Abstract

Foundry core compositions are produced by admixing (A) a mixture comprising 5 to 50 p.b.w. of furfuryl alcohol and 90 to 35 p.b.w. of a non-polymerized aqueous mixture of formaldehyde, urea and their equilibrium reaction products, the aqueous mixture containing a maximum of 15% by weight of water and (B) a mixture comprising 3,000 to 10,000 p.b.w. of sand, 1 to 3 p.b.w. of an acidic catalyst, and sufficient urea to give a molar ratio of total urea to formaldehyde in the compositions of 1:1,5 to 1:2,5. Mixture (B) may have added thereto 0,5 to 7,0 parts of 29% aqueous ammonia. Acid catalysts specified are ammonium chloride, ammonium trichloroacetate, ammonium dihydrogen phosphate, ammonium sulphate and ammonium nitrate. When ammonium chloride is used aluminium stearate may be added. "Methocel" (Registered Trade Mark) carboxymethocel or guar gum may be added to mixture (B). Examples are given.
GB12114/61A 1960-07-11 1961-04-05 Improvements in and relating to foundry core compositions Expired GB918813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41752A US3168489A (en) 1960-07-11 1960-07-11 Process of producing a foundry core composition

Publications (1)

Publication Number Publication Date
GB918813A true GB918813A (en) 1963-02-20

Family

ID=21918145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12114/61A Expired GB918813A (en) 1960-07-11 1961-04-05 Improvements in and relating to foundry core compositions

Country Status (3)

Country Link
US (1) US3168489A (en)
DE (1) DE1239436B (en)
GB (1) GB918813A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538035A (en) * 1965-09-13 1970-11-03 Allied Chem Stable urea-formaldehyde solutions
US3480573A (en) * 1966-11-23 1969-11-25 Corn Products Co Binder composition for molds and cores comprising reducing sugars and sugars that hydrolyze to form reducing sugars,urea,formaldehyde,and furfuryl alcohol
US3921343A (en) * 1974-01-25 1975-11-25 Trw Inc Hot melt compositions
US4022727A (en) * 1974-01-25 1977-05-10 Trw Inc. Thermoplastic resinoid hot melt compositions
CA2124759A1 (en) * 1993-11-15 1995-05-16 Borden Chemical, Inc. Addition for promotion of bench life extension in a hot box binder system
CN104497299B (en) * 2014-11-20 2016-08-24 济南圣泉集团股份有限公司 The preparation method of low free furfuryl alcohol binding agent

Family Cites Families (11)

* 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
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
US2864779A (en) * 1955-08-02 1958-12-16 Belge Produits Chimiques Sa Process of preparing urea-formaldehyde molding powders
US2861980A (en) * 1955-10-05 1958-11-25 Cities Service Res & Dev Co Method for producing urea formaldehyde core binder resins
GB832999A (en) * 1955-12-02 1960-04-21 Freeman Chemical Corp Method and compositions for foundry use
US3020609A (en) * 1956-03-29 1962-02-13 Quaker Oats Co Process of forming a shell mold from a water, furfuryl alcohol, sand and catalyst composition
US2943068A (en) * 1957-08-23 1960-06-28 Monsanto Chemicals Shell molding compositions
US2953535A (en) * 1957-09-11 1960-09-20 Borden Co Resin binder compositions
US3008205A (en) * 1958-09-19 1961-11-14 Gen Motors Corp Shell type molds and cores

Also Published As

Publication number Publication date
US3168489A (en) 1965-02-02
DE1239436B (en) 1967-04-27

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