GB918813A - Improvements in and relating to foundry core compositions - Google Patents
Improvements in and relating to foundry core compositionsInfo
- 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
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.
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)
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)
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 |
-
1960
- 1960-07-11 US US41752A patent/US3168489A/en not_active Expired - Lifetime
-
1961
- 1961-04-05 GB GB12114/61A patent/GB918813A/en not_active Expired
- 1961-04-11 DE DEQ652A patent/DE1239436B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US3168489A (en) | 1965-02-02 |
DE1239436B (en) | 1967-04-27 |
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