FR2329379A1 - Thermoplastic foundry pattern compsn. - contg. wax or (co)polystyrene and isopropylidene diphenol to improve dimensional stability - Google Patents

Thermoplastic foundry pattern compsn. - contg. wax or (co)polystyrene and isopropylidene diphenol to improve dimensional stability

Info

Publication number
FR2329379A1
FR2329379A1 FR7532772A FR7532772A FR2329379A1 FR 2329379 A1 FR2329379 A1 FR 2329379A1 FR 7532772 A FR7532772 A FR 7532772A FR 7532772 A FR7532772 A FR 7532772A FR 2329379 A1 FR2329379 A1 FR 2329379A1
Authority
FR
France
Prior art keywords
contg
compsn
thermoplastic
patterns
compsns
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.)
Granted
Application number
FR7532772A
Other languages
French (fr)
Other versions
FR2329379B1 (en
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.)
Yates Manufacturing Co
Original Assignee
Yates Manufacturing 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 Yates Manufacturing Co filed Critical Yates Manufacturing Co
Priority to FR7532772A priority Critical patent/FR2329379A1/en
Publication of FR2329379A1 publication Critical patent/FR2329379A1/en
Application granted granted Critical
Publication of FR2329379B1 publication Critical patent/FR2329379B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The 2-phase thermoplastic compsn. contains a thermoplastic pattern material, (I) and 5-70 (20-70) wt. % (wrt total wt.) of finely divided 4,4'-isopropylidene-diphenol (II). The compsn. is used for forming foundry patterns for precision casting. (II) has a low expansion coefft. between room temp. and 150 degrees C. In pattern compsns. it behaves as an inert aggregate. Compsns. are inert towards mould and casting material and cause no corrosion. On cooling, foundry patterns contg. (I) and (II) shrink less than patterns contg. no (II). Addn. of (II) also allows use of higher drying temps. and shorter drying times. On burning out patterns, compsns. contg. (II) leave less residual ash and cause less erosion of mould.
FR7532772A 1975-10-27 1975-10-27 Thermoplastic foundry pattern compsn. - contg. wax or (co)polystyrene and isopropylidene diphenol to improve dimensional stability Granted FR2329379A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7532772A FR2329379A1 (en) 1975-10-27 1975-10-27 Thermoplastic foundry pattern compsn. - contg. wax or (co)polystyrene and isopropylidene diphenol to improve dimensional stability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7532772A FR2329379A1 (en) 1975-10-27 1975-10-27 Thermoplastic foundry pattern compsn. - contg. wax or (co)polystyrene and isopropylidene diphenol to improve dimensional stability

Publications (2)

Publication Number Publication Date
FR2329379A1 true FR2329379A1 (en) 1977-05-27
FR2329379B1 FR2329379B1 (en) 1980-01-11

Family

ID=9161676

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7532772A Granted FR2329379A1 (en) 1975-10-27 1975-10-27 Thermoplastic foundry pattern compsn. - contg. wax or (co)polystyrene and isopropylidene diphenol to improve dimensional stability

Country Status (1)

Country Link
FR (1) FR2329379A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1431556A (en) * 1965-04-22 1966-03-11 Dynamit Nobel Ag Precision casting process
FR1468187A (en) * 1966-02-14 1967-02-03 Gruenzweig & Hartmann Expanded plastic foundry model
FR2244584A1 (en) * 1973-09-20 1975-04-18 Kubota Ltd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1431556A (en) * 1965-04-22 1966-03-11 Dynamit Nobel Ag Precision casting process
FR1468187A (en) * 1966-02-14 1967-02-03 Gruenzweig & Hartmann Expanded plastic foundry model
FR2244584A1 (en) * 1973-09-20 1975-04-18 Kubota Ltd

Also Published As

Publication number Publication date
FR2329379B1 (en) 1980-01-11

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