ES476072A1 - Polyurethaneebased roommtemperatureecurable molddbindinggagent for moldinggcompound to be used in making mold and core - Google Patents

Polyurethaneebased roommtemperatureecurable molddbindinggagent for moldinggcompound to be used in making mold and core

Info

Publication number
ES476072A1
ES476072A1 ES476072A ES476072A ES476072A1 ES 476072 A1 ES476072 A1 ES 476072A1 ES 476072 A ES476072 A ES 476072A ES 476072 A ES476072 A ES 476072A ES 476072 A1 ES476072 A1 ES 476072A1
Authority
ES
Spain
Prior art keywords
accelerator
materials
roommtemperatureecurable
polyurethaneebased
moldinggcompound
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
ES476072A
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.)
Centre for Higher Education
Original Assignee
Centre for Higher Education
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 Centre for Higher Education filed Critical Centre for Higher Education
Publication of ES476072A1 publication Critical patent/ES476072A1/en
Expired 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
    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3271—Hydroxyamines
    • C08G18/3278—Hydroxyamines containing at least three hydroxy groups
    • 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
    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3271—Hydroxyamines
    • 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
    • C08G18/48—Polyethers
    • C08G18/50—Polyethers having heteroatoms other than oxygen
    • C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

A cold. hardenable binder for moulding material, based on: polyurethane, for mixts. of materials to be used to make moulds and cores, consits of a polyisocyanate with is not 2 NCO gps. and a polyol with is not 2 OH gps., the polyol being an aminopolyol which contains is not 1 tert-amino gp. actign as an accelerator. Cold hardenable moulding materials harden very slowly unless na unacceptably large amt. of accelerator is present. Materials contg. polyurethanes can be hardened by treatment for short times with tert-amine in gaseous state e.g. triethylamine, but this has deleterious effects on moulded prods. of large size. The present method gives much more rapid hardening without deleterious effects, the accelerator being one of the agents used in the system. No toxic or otherwise obnoxious effects are prod.
ES476072A 1977-12-30 1978-12-16 Polyurethaneebased roommtemperatureecurable molddbindinggagent for moldinggcompound to be used in making mold and core Expired ES476072A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772759258 DE2759258A1 (en) 1977-12-30 1977-12-30 Cold curing binder for molding compounds for the production of molds and cores

Publications (1)

Publication Number Publication Date
ES476072A1 true ES476072A1 (en) 1979-05-16

Family

ID=6027935

Family Applications (1)

Application Number Title Priority Date Filing Date
ES476072A Expired ES476072A1 (en) 1977-12-30 1978-12-16 Polyurethaneebased roommtemperatureecurable molddbindinggagent for moldinggcompound to be used in making mold and core

Country Status (13)

Country Link
JP (1) JPS5496426A (en)
AR (1) AR220366A1 (en)
AU (1) AU4293878A (en)
BE (1) BE865741A (en)
BR (1) BR7808389A (en)
CA (1) CA1134989A (en)
DE (1) DE2759258A1 (en)
ES (1) ES476072A1 (en)
FR (1) FR2413453A1 (en)
GR (1) GR66462B (en)
IT (1) IT1102406B (en)
NL (1) NL7812549A (en)
ZA (1) ZA783393B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370463A (en) * 1978-06-14 1983-01-25 Ashland Oil, Inc. Process for no-bake foundry application utilizing polyurethanes based on amine polyols
DE2855391A1 (en) * 1978-12-21 1980-06-26 Woellner Werke COLD-HARDENING BINDING AGENT FOR PARTICULATE SOLIDS, IN PARTICULAR FOUNDRY SAND
DE2925733A1 (en) * 1979-06-23 1981-01-15 Huettenes Albertus POLYURETHANE-BASED BINDERS AND THE PRODUCTION THEREOF
JPS5736115A (en) * 1980-08-12 1982-02-26 Mitsui Tekisako Chem Kk Curing agent composition for polyurethane
US4448907A (en) * 1981-03-30 1984-05-15 Ashland Oil, Inc. Process for casting lightweight metals
DE3329452A1 (en) * 1983-08-16 1985-03-07 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING CELL-SHAPED POLYURETHANES, IF ANY

Also Published As

Publication number Publication date
DE2759258A1 (en) 1979-07-12
NL7812549A (en) 1979-07-03
CA1134989A (en) 1982-11-02
ZA783393B (en) 1979-06-27
IT7831040A0 (en) 1978-12-20
FR2413453B1 (en) 1983-03-18
GR66462B (en) 1981-03-23
BE865741A (en) 1978-07-31
AU4293878A (en) 1979-07-05
BR7808389A (en) 1979-08-07
FR2413453A1 (en) 1979-07-27
JPS5496426A (en) 1979-07-30
AR220366A1 (en) 1980-10-31
IT1102406B (en) 1985-10-07

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001