GB928451A - Improvements in thermosetting material - Google Patents

Improvements in thermosetting material

Info

Publication number
GB928451A
GB928451A GB1887258A GB1887258A GB928451A GB 928451 A GB928451 A GB 928451A GB 1887258 A GB1887258 A GB 1887258A GB 1887258 A GB1887258 A GB 1887258A GB 928451 A GB928451 A GB 928451A
Authority
GB
United Kingdom
Prior art keywords
zinc
agents
specified
thermosetting
coated
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
GB1887258A
Inventor
James Seward Woodhead
John Edward Worthington
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.)
Polygram Casting Co Ltd
Original Assignee
Polygram Casting 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
Priority to NL240145D priority Critical patent/NL240145A/xx
Application filed by Polygram Casting Co Ltd filed Critical Polygram Casting Co Ltd
Priority to GB1887258A priority patent/GB928451A/en
Priority to DE19591420183 priority patent/DE1420183A1/en
Priority to BE579599A priority patent/BE579599A/en
Priority to DK209159A priority patent/DK113470B/en
Publication of GB928451A publication Critical patent/GB928451A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H99/00—Subject matter not provided for in other groups of this subclass, e.g. flours, kernels
    • 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
    • B22C1/2293—Natural polymers
    • 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
    • B22C1/26—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 carbohydrates; of distillation residues therefrom
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • Biochemistry (AREA)
  • Wood Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A shell moulding material comprises a granular refractory material, usually sand, the grains of which are coated with a thermosetting resinous product obtained from a reaction between at least one carbohydrate or at least one polyhydrate alcohol containing at least three carbon atoms and at least one tannin. Specified carbohydrates and polyhydric alcohols are glucose, fructose, cane sugar molasses, sucrose, maltose, dextrose, starch, dextrins, cellulose, glycosides, glycerol and sorbitol. Numerous tannins are specified of both the hydrolysable and condensed types. Free-flow promoting agents such as zinc oxide, aluminium hydroxide, calcium oxide and hydroxide; sodium, magnesium, ammonium and zinc chlorides; calcium, zinc and aluminium stearates; magnesium, zinc and the alkali and alkaline-earth metal carbonates; ammonium persulphate, manganese dioxide, potassium and sodium nitrates and other inorganic oxidizing agents, the isocyanates, sodium acetate and complex hydrated alumino-silicates such as montmorillonites, may be included. Examples 6-9 describe this embodiment of the invention; in these examples quartz sand is mixed and coated with a mixture of molasses or cane sugar, sulphited quebracho extract, aniline and concentrated hydrochloride acid (hardening agents). In Example 7 the coated sand is additionally coated with a solution of fatty acid pitch dissolved in carbon tetrachloride; in Example 8 it is mixed with hexamethylene tetramine and zinc stearate; and in Example 9 it is mixed with an uncured novolac and Wyoming bentonite. The thermosetting resinous products referred to above may also be used to bond fuels, e.g. coal to make coal briquettes. Specifications 274,146, 481,819, 520,913, 539,581, 545,147 and U.S.A. Specifications 1,949,831, 1,949,832, 1,974,064 are referred to.ALSO:A resinous liquid or solid thermosetting product is obtained from a reaction between at least one carbohydrate or at least one polyhydric alcohol containing at least 3 carbon atoms and at least one tannin. When the carbohydrate is a polysaccharide it may first be hydrolysed into mono- or di-saccharide units. Specified carbohydrates and polyhydric alcohols are glucose, fructose, cane sugar molasses, dextrose, sucrose, maltose, starch, dextrins, cellulose, glycosides, glycerol and sorbitol. Specified tannins are numerous including both the hydrolysable and condensed types; utilized in the examples are sulphited quebracho extract, myrabolam extract and quebracho extract. Optional additives include tackiness reducing agents talc, stearates, clays, zinc oxide strengthening agents phenol-formaldehyde condensates, urea-formaldehyde condensates, silicone resins and melamine-formaldehyde resins natural or synthetic thermoplastic materials to increase resiliency and resistance to thermal shock stripping agents plumbago, talc, silicones and diatomaceous earth hardening agents sulphuric, phosphoric, chromic, hydrochloric, hydriodic, hydrobromic, lactic, acetic, formic, citric, oxalic, gallic, phthalic and salicyclic acids and anhydrides as well as hexamethylenetetramine, aniline, anhydroformaldehyde aniline, the naphthylamines, thiocarbonilamide, p-aminophenol, p-phenylene diamine, pyridine, thiourea, isoamylamine, hydroxylamine, ammonia, paraformaldehyde, polyoxymethylene derivatives and formaldehyde fillers wood meal, pine wood flour, cotton linters, mica, asbestos and mineral powders. The thermosetting products may be used for bonding finely divided metals, fuels, and micas in such processes as the production of sintered products, coal briquettes and tiles; a particular use is in the preparation of shell moulds either by applying a moulding mixture containing a granular refractory substance (usually sand) and the thermosetting binder in granular form or by applying a granular substance coated with the thermosetting binder. For shell-moulding applications the following additives may be employed:- finely divided substances such as iron oxide, manganese oxide and silica flour to impart a smoother finish to the castings inhibiting agents ammonium borofluoride, boric acid and sulphur and free-flow promoting agents (in the coated granular substance application) zinc oxide, aluminium hydroxide, calcium oxide and hydroxide; sodium, magnesium, ammonium and zinc chlorides; calcium, zinc and aluminium stearates; magnesium, zinc and the alkali and alkaline earth metal carbonates; ammonium persulphate, manganese dioxide, potassium and sodium nitrates and other inorganic oxidizing agents, the isocyanates, sodium acetate and complex hydrated alumino-silicates such as the montmorillonites.ALSO:Resinous solid thermosetting products, which may be in the form of foams, are obtained from the reaction between at least one carbohydrate or at least one polyhydric alcohol containing at least 3 carbon atoms and at least one tannin. Specified carbohydrates and polyhydric alcohols are glucose, fructose, cane sugar molasses, sucrose, maltose, dextrose, starch, dextrins, cellulose, glycosides, glycerol and sorbitol. Numerous tannins are specified including both the condensed and hydrolysable types. Numerous other additives are specified (see Group IV(a)). In Example 5, cane sugar molasses are mixed with aniline (hardening catalyst), sulphited quebracha extract and concentrated hydrochloric acid (hardening catalyst) and the resultant mass heated to produce a hard, brittle foam.
GB1887258A 1958-06-12 1958-06-12 Improvements in thermosetting material Expired GB928451A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL240145D NL240145A (en) 1958-06-12
GB1887258A GB928451A (en) 1958-06-12 1958-06-12 Improvements in thermosetting material
DE19591420183 DE1420183A1 (en) 1958-06-12 1959-06-11 Composition of substances hardened by heating
BE579599A BE579599A (en) 1958-06-12 1959-06-11 Improvements in thermosetting materials.
DK209159A DK113470B (en) 1958-06-12 1959-06-11 Method for producing a thermosetting material.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1887258A GB928451A (en) 1958-06-12 1958-06-12 Improvements in thermosetting material

Publications (1)

Publication Number Publication Date
GB928451A true GB928451A (en) 1963-06-12

Family

ID=10119872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1887258A Expired GB928451A (en) 1958-06-12 1958-06-12 Improvements in thermosetting material

Country Status (2)

Country Link
GB (1) GB928451A (en)
NL (1) NL240145A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181449A (en) * 1985-10-05 1987-04-23 Bobrite Limited Fuel briquettes
EP2817374B1 (en) 2011-09-02 2017-06-28 Knauf Insulation Carbohydrate based binder system and method of its production
CN110003966A (en) * 2019-04-28 2019-07-12 河北东慈环保科技有限公司 A kind of multi-functional powdered briquette adhesive, preparation method and the moulded coal comprising the adhesive
EP2465987B2 (en) † 2010-12-15 2021-02-17 Johns Manville Improved spunbond polyester mat
EP2467520B2 (en) † 2009-08-19 2021-02-24 Johns Manville Improved performance polymeric fiber webs
CN117801750A (en) * 2023-05-22 2024-04-02 西南林业大学 Preparation and use method of formaldehyde-free synthetic resin adhesive

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181449A (en) * 1985-10-05 1987-04-23 Bobrite Limited Fuel briquettes
GB2181449B (en) * 1985-10-05 1989-05-04 Bobrite Limited Fuel briquettes
EP2467520B2 (en) † 2009-08-19 2021-02-24 Johns Manville Improved performance polymeric fiber webs
EP2465987B2 (en) † 2010-12-15 2021-02-17 Johns Manville Improved spunbond polyester mat
EP2817374B1 (en) 2011-09-02 2017-06-28 Knauf Insulation Carbohydrate based binder system and method of its production
CN110003966A (en) * 2019-04-28 2019-07-12 河北东慈环保科技有限公司 A kind of multi-functional powdered briquette adhesive, preparation method and the moulded coal comprising the adhesive
CN110003966B (en) * 2019-04-28 2021-08-06 河北东慈环保科技有限公司 Multifunctional dry powder coal binder, preparation method thereof and coal containing binder
CN117801750A (en) * 2023-05-22 2024-04-02 西南林业大学 Preparation and use method of formaldehyde-free synthetic resin adhesive

Also Published As

Publication number Publication date
NL240145A (en)

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