ES308208A1 - Improvements in or relating to foundry moulding mixtures and a method of using same - Google Patents

Improvements in or relating to foundry moulding mixtures and a method of using same

Info

Publication number
ES308208A1
ES308208A1 ES0308208A ES308208A ES308208A1 ES 308208 A1 ES308208 A1 ES 308208A1 ES 0308208 A ES0308208 A ES 0308208A ES 308208 A ES308208 A ES 308208A ES 308208 A1 ES308208 A1 ES 308208A1
Authority
ES
Spain
Prior art keywords
phenolic
composition
curing agent
resin
zinc
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
ES0308208A
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.)
Leicester Lovell and Co Ltd
Original Assignee
Leicester Lovell and Co Ltd
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 Leicester Lovell and Co Ltd filed Critical Leicester Lovell and Co Ltd
Publication of ES308208A1 publication Critical patent/ES308208A1/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
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • 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
    • 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
    • B22C1/2246—Condensation polymers of aldehydes and ketones
    • B22C1/2253—Condensation polymers of aldehydes and ketones with phenols

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mold Materials And Core Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A reactive moulding composition comprises a granular refractory material mixed or coated with a phenolic novolak resin in which the phenolic nuclei are linked together predominantly through their ring positions ortho to the phenolic hydroxyl group and a curing agent for the phenolic resin. The curing agent is preferably hexamethylenetetramine and suitable refractory materials are sand, zircon, quartz, alumina and carborundum. A mould release agent such as wax, plumbago or graphite may also be added to the composition. The composition may be prepared by heating the granular refractory material to between 120 DEG C. and 160 DEG C., adding the said phenol novolak resin and mixing until substantially homogeneous, adding a curing agent for the phenolic resin and cooling the mixture so formed by the addition of water while still mixing and while the phenolic resin is still fusible. The composition may be moulded to form shell moulds or cores. Phenolic novolaks in which the nuclei are united through the positions ortho to the phenolic hydroxyl group may be prepared by reacting 1 molecular proportion of phenol with preferably 0.6-0.7 molecular proportion of formaldehyde in the presence of a catalyst such as zinc borate, zinc acetate, zinc benzoate and cadmium acetate.
ES0308208A 1964-01-16 1965-01-16 Improvements in or relating to foundry moulding mixtures and a method of using same Expired ES308208A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1957/64A GB1077292A (en) 1964-01-16 1964-01-16 Improvements in or relating to foundry moulding mixtures and a method of using same

Publications (1)

Publication Number Publication Date
ES308208A1 true ES308208A1 (en) 1965-06-16

Family

ID=9731028

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0308208A Expired ES308208A1 (en) 1964-01-16 1965-01-16 Improvements in or relating to foundry moulding mixtures and a method of using same

Country Status (4)

Country Link
DE (1) DE1569117B1 (en)
ES (1) ES308208A1 (en)
FR (1) FR1420943A (en)
GB (1) GB1077292A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403076A (en) 1980-07-14 1983-09-06 Pacific Resins & Chemicals, Inc. Fast curing novolac resin and shell molding composition and methods for producing the same

Also Published As

Publication number Publication date
FR1420943A (en) 1965-12-10
DE1569117B1 (en) 1970-07-02
GB1077292A (en) 1967-07-26

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