FR2368320A1 - Perfectionnements a la catalyse, en particulier pour des liants resineux destines a des materiaux de fonderie - Google Patents

Perfectionnements a la catalyse, en particulier pour des liants resineux destines a des materiaux de fonderie

Info

Publication number
FR2368320A1
FR2368320A1 FR7731309A FR7731309A FR2368320A1 FR 2368320 A1 FR2368320 A1 FR 2368320A1 FR 7731309 A FR7731309 A FR 7731309A FR 7731309 A FR7731309 A FR 7731309A FR 2368320 A1 FR2368320 A1 FR 2368320A1
Authority
FR
France
Prior art keywords
elastic force
catalysis
vapor
reaction
resin
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.)
Pending
Application number
FR7731309A
Other languages
English (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.)
Stone Wallwork Ltd
Original Assignee
Stone Wallwork 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 Stone Wallwork Ltd filed Critical Stone Wallwork Ltd
Publication of FR2368320A1 publication Critical patent/FR2368320A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B22C9/123—Gas-hardening
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/1891—Catalysts containing secondary or tertiary amines or salts thereof in vaporous state
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/54—Polycondensates of aldehydes
    • C08G18/542—Polycondensates of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Mold Materials And Core Materials (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Pour produire une réaction entre des composants résineux tels qu'une résine et un isocyanate à l'aide d'un catalyseur constitué par une amine, par exemple une amine tertiaire, pour la fabrication de moules de fonderie ou de matériaux de noyautage, la catalyse s'effectue pendant toute la réaction sous une pression inférieure à la force élastique de la vapeur du catalyseur. Ainsi, l'amine à l'état liquide peut être soumise à une pression inférieure à la force élastique de sa vapeur, appliquée à l'état de vapeur à un mélange durcissable de sable, de résine et d'isocyanate, sous une pression inférieure à la force élastique précitée, et extraite du mélange durci sous une pression inférieure à la force élastique précitée mais en restant à l'état de vapeur. Le catalyseur peut être récupéré et recyclé après la réaction.
FR7731309A 1976-10-21 1977-10-18 Perfectionnements a la catalyse, en particulier pour des liants resineux destines a des materiaux de fonderie Pending FR2368320A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43731/76A GB1592166A (en) 1976-10-21 1976-10-21 Production of a foundry core or mould

Publications (1)

Publication Number Publication Date
FR2368320A1 true FR2368320A1 (fr) 1978-05-19

Family

ID=10430087

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7731309A Pending FR2368320A1 (fr) 1976-10-21 1977-10-18 Perfectionnements a la catalyse, en particulier pour des liants resineux destines a des materiaux de fonderie

Country Status (9)

Country Link
BE (1) BE860004A (fr)
DE (1) DE2747109A1 (fr)
DK (1) DK467277A (fr)
ES (1) ES463390A1 (fr)
FR (1) FR2368320A1 (fr)
GB (1) GB1592166A (fr)
IT (1) IT1086911B (fr)
NL (1) NL7711406A (fr)
SE (1) SE7711732L (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2041187C (fr) * 1991-04-25 1997-04-22 John Stephen Griffin Production de moules et noyaux de fonderie au sable
DE102020003820A1 (de) 2020-06-25 2021-12-30 Daimler Ag Verfahren zum Rückgewinnen von Amin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864511A (en) * 1958-08-30 1961-04-06 Fritz Hansberg Improvements in and relating to the hardening of foundry cores or moulds
US3428110A (en) * 1968-02-14 1969-02-18 Foseco Fordath Ag Process for the production of foundry cores and molds
FR2031636A5 (en) * 1969-01-16 1970-11-20 Plastimer Composition for foundry sand binders and - preparation of cores and moulds by cold rapid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864511A (en) * 1958-08-30 1961-04-06 Fritz Hansberg Improvements in and relating to the hardening of foundry cores or moulds
US3428110A (en) * 1968-02-14 1969-02-18 Foseco Fordath Ag Process for the production of foundry cores and molds
FR2031636A5 (en) * 1969-01-16 1970-11-20 Plastimer Composition for foundry sand binders and - preparation of cores and moulds by cold rapid

Also Published As

Publication number Publication date
BE860004A (fr) 1978-02-15
NL7711406A (nl) 1978-04-25
GB1592166A (en) 1981-07-01
DK467277A (da) 1978-04-22
SE7711732L (sv) 1978-04-22
DE2747109A1 (de) 1978-04-27
IT1086911B (it) 1985-05-31
ES463390A1 (es) 1978-07-16

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