FR2430956A1 - PROCESS FOR PRODUCING PHENOL-FORMALDEHYDE UREA BINDER FOR MOLDING SANDS - Google Patents

PROCESS FOR PRODUCING PHENOL-FORMALDEHYDE UREA BINDER FOR MOLDING SANDS

Info

Publication number
FR2430956A1
FR2430956A1 FR7918000A FR7918000A FR2430956A1 FR 2430956 A1 FR2430956 A1 FR 2430956A1 FR 7918000 A FR7918000 A FR 7918000A FR 7918000 A FR7918000 A FR 7918000A FR 2430956 A1 FR2430956 A1 FR 2430956A1
Authority
FR
France
Prior art keywords
formaldehyde
urea
phenol
minutes
temperature
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
FR7918000A
Other languages
French (fr)
Other versions
FR2430956B1 (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.)
N PROIZV OB TULATSCHERMET
Original Assignee
N PROIZV OB TULATSCHERMET
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 N PROIZV OB TULATSCHERMET filed Critical N PROIZV OB TULATSCHERMET
Publication of FR2430956A1 publication Critical patent/FR2430956A1/en
Application granted granted Critical
Publication of FR2430956B1 publication Critical patent/FR2430956B1/fr
Granted 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
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
    • C08G14/08—Ureas; Thioureas
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Mold Materials And Core Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compounds Of Unknown Constitution (AREA)

Abstract

A method of obtaining a urea-phenol-formaldehyde binding agent for mould materials whereby urea and formaldehyde taken at a mole ratio of 1:(1.9-2.1) are heated at a pH of 6.5-8.0 up to a temperature of 80-100` C and kept at that temperature for 20-40 minutes, then an acidic catalyst is introduced until the pH value of 4.2-4.7 is reached, after which, following a pause of 15-30 minutes, the pH value is raised to 6.5-8.0 and phenol and formaldehyde are introduced until the mole ratio of (0.25-0.4):1:(2.5-2.7) between phenol, urea and formaldehyde, respectively, is reached and then, after a pause of 40-60 minutes at a temperature of 85-90` C and at a pH of 7.5-9.0 the reaction mass is vacuum dried up to the index of refraction of 1.468-1.472, urea is added until the mole ratio of (0.2-0.3):1:(1.8-2.2) between phenol, urea and formaldehyde, respectively, is reached and, finally after being kept for 20-40 minutes at a temperature of 55-65` C the reaction mass is cooled.
FR7918000A 1978-07-11 1979-07-11 PROCESS FOR PRODUCING PHENOL-FORMALDEHYDE UREA BINDER FOR MOLDING SANDS Granted FR2430956A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782643210A SU895998A1 (en) 1978-07-11 1978-07-11 Method of producing ureaphenylformaldehyde resin

Publications (2)

Publication Number Publication Date
FR2430956A1 true FR2430956A1 (en) 1980-02-08
FR2430956B1 FR2430956B1 (en) 1984-12-14

Family

ID=20776437

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7918000A Granted FR2430956A1 (en) 1978-07-11 1979-07-11 PROCESS FOR PRODUCING PHENOL-FORMALDEHYDE UREA BINDER FOR MOLDING SANDS

Country Status (5)

Country Link
AU (1) AU524275B2 (en)
CA (1) CA1151797A (en)
FR (1) FR2430956A1 (en)
SU (1) SU895998A1 (en)
WO (1) WO1980000254A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757108A (en) * 1986-06-18 1988-07-12 Borden, Inc. Water soluble phenolic resole-urea composition

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427284A (en) * 1966-10-17 1969-02-11 Elvin M Bright Manufacture of resinous condensation products comprising reacting an amine,phenol,or urea with formaldehyde in the presence of an allylic compound
SU446523A1 (en) * 1972-06-12 1974-10-15 Предприятие П/Я М-5885 Method for preparing modified carbamide resin

Also Published As

Publication number Publication date
WO1980000254A1 (en) 1980-02-21
AU5062679A (en) 1981-10-15
SU895998A1 (en) 1982-01-07
FR2430956B1 (en) 1984-12-14
AU524275B2 (en) 1982-09-09
CA1151797A (en) 1983-08-09

Similar Documents

Publication Publication Date Title
US2500665A (en) High-temperature insulation and method of manufacture
KR860003284A (en) Polyurethane binder composition and preparation method thereof
ATE253023T1 (en) METHOD FOR PRODUCING A BRAKE DISC WITH VENTILATION CHANNELS, AND BRAKE DISC OBTAINED BY SAID METHOD
SE7909328L (en) PROCEDURE FOR MANUFACTURING CASTLE CORNS OR FORMS AND BINDING MATERIALS FOR PREPARING THEREOF
FI914287A0 (en) FENOLHARTSKOMPOSITIONER.
KR870001244A (en) Method for producing phenolic resin binder for casting and refractory
KR930019718A (en) Phenolic sol resin, its manufacturing method and casting core and mold manufacturing method using the same
FR2430956A1 (en) PROCESS FOR PRODUCING PHENOL-FORMALDEHYDE UREA BINDER FOR MOLDING SANDS
NO902667D0 (en) PROCEDURE FOR PREPARING A FORMULA OF SUITABLE PARTICLES AND PHENOLIC RESIN.
DE3173886D1 (en) Process for the production of synthetic resins on the basis of resorcin compounds
US4055528A (en) Phenol-formaldehyde resin for foundry applications
ATE10070T1 (en) SURFACE HARDENED SINTERED IRON PART AND PRODUCTION METHOD.
GB725456A (en) Improvements relating to the production of shell moulds for casting
JPS5759925A (en) Production of phenolic resin for shell mold process
ES471856A1 (en) Blends of furan-aldehyde resins with phenolic resins and molded articles produced therefrom
SU764837A1 (en) Method of making cores of thermosetting resins
ES404835A1 (en) Method of preparing a phenol formal-dehyde amine microporous sheet
DE59804820D1 (en) PHENOL RESIN AND BINDERS FOR THE PRODUCTION OF MOLDS AND CORES BY THE PHENOL RESIN-POLYURETHANE PROCESS
SU1713719A1 (en) Method of manufacturing cores fitted out by hot equipment
SU608483A3 (en) Moulding sand
FR2424807A1 (en) Moulding impermeable panels from coated expanded polystyrene beads - using moulds subjected to superficial and microwave heating
JPS5759926A (en) Production of resin for shell mold process
GB991347A (en) Improvements in or relating to the production of sand moulds, cores and like articles
SU624708A1 (en) Method of producing lining coating on metal mould
JPS56163114A (en) Production of phenol resin for shell mold

Legal Events

Date Code Title Description
ST Notification of lapse