GB942539A - Phenol-formaldehyde resinous composition - Google Patents

Phenol-formaldehyde resinous composition

Info

Publication number
GB942539A
GB942539A GB4175359A GB4175359A GB942539A GB 942539 A GB942539 A GB 942539A GB 4175359 A GB4175359 A GB 4175359A GB 4175359 A GB4175359 A GB 4175359A GB 942539 A GB942539 A GB 942539A
Authority
GB
United Kingdom
Prior art keywords
phenol
resin
lignin
modifier
rosin
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
GB4175359A
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.)
Mazda Motor Corp
Original Assignee
Toyo Kogyo 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
Application filed by Toyo Kogyo Co Ltd filed Critical Toyo Kogyo Co Ltd
Publication of GB942539A publication Critical patent/GB942539A/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
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/28—Chemically modified polycondensates
    • 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
    • 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
    • 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
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
    • C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
    • C08G8/10—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

Silica sand is coated with a liquid composition of a modified phenol aldehyde or phenol-ligninaldehyde resin, wax and hexamethylene tetramine, by the hot mulling process, and used to make shell moulds. The resins (see Division C3) are modified by incorporation of one or more of rosin, copal, shellac, or a coumarone and/or indene resin, during their manufacture.ALSO:In a liquid composition containing by weight 65-85% resin solids, 7-12% free phenol and 4-8% water, the resin solids conprise (1) An A-stage phenol-formaldehyde or phenol-lignin formaldehyde condensate with which additional methylol groups have been introduced, and (11) a modifier which is one or more of rosin, copal shellac, and a coumarone and/or indene resin; the amount of lignin not exceeding 50% of the lignin plus phenol; the amount of resinous modifier being not more than 30%, and the amount of lignin plus resin modifier being not more than 50% of phenol plus resin plus lignin. The compositions are particularly useful for coating sand to be used in shell moulding. Part of the resin modifier may be reacted with the phenolaldehyde or phenol-lignin-aldehyde condensate during the introduction of extra methylol groups in the initial condensate. The lignin is used in finely divided powder form. Hexamethylene-tetramine is added to the compositions as a curing agent and wax as a lubricant. The compositions may be thinned if necessary with an alcohol or ketone. In examples (1) phenol is condensed with formaldehyde at a pH of 1 and a temperature not exceeding 70 DEG C.; the pH is adjusted to 7, further formalin added and condensation continued at 80 DEG C. During this second stage rosin is mixed in. The resinous product is washed and water distilled in vacuo to yield a product with 83-85% resin solids, 10-11% phenol and 5-6% water. (2) A coumarone resin is used in place of rosin, and methanol is added to the final composition. (3) Lignin is included in the initial phenol-aldehyde condensation, and rosin is used as modifier. (4) is similar to (3) using a coumarone resin as modifier and with addition of methanol to the final composition. The products of the above examples were mixed with sand, hexamethylene tetramine and wax and used to form shell moulds the hot and cold strengths of which were measured and compared with those of moulds from an ordinary phenol-formaldehyde resin.
GB4175359A 1958-12-09 1959-12-08 Phenol-formaldehyde resinous composition Expired GB942539A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3564658 1958-12-09
JP3564458 1958-12-09
JP3564558 1958-12-09
JP3564758 1958-12-09

Publications (1)

Publication Number Publication Date
GB942539A true GB942539A (en) 1963-11-20

Family

ID=27460126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4175359A Expired GB942539A (en) 1958-12-09 1959-12-08 Phenol-formaldehyde resinous composition

Country Status (1)

Country Link
GB (1) GB942539A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710228A (en) * 1985-10-16 1987-12-01 General Mills, Inc. Edible coating composition and method of preparation
US4874618A (en) * 1985-12-27 1989-10-17 General Mills, Inc. Package containing a moisture resistant edible internal barrier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710228A (en) * 1985-10-16 1987-12-01 General Mills, Inc. Edible coating composition and method of preparation
US4874618A (en) * 1985-12-27 1989-10-17 General Mills, Inc. Package containing a moisture resistant edible internal barrier

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