GB869302A - Phenolic resin-coated moulding powders - Google Patents

Phenolic resin-coated moulding powders

Info

Publication number
GB869302A
GB869302A GB38527/57A GB3852757A GB869302A GB 869302 A GB869302 A GB 869302A GB 38527/57 A GB38527/57 A GB 38527/57A GB 3852757 A GB3852757 A GB 3852757A GB 869302 A GB869302 A GB 869302A
Authority
GB
United Kingdom
Prior art keywords
particles
coated
mixing
sand
phenol
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
GB38527/57A
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.)
Hooker Chemical Corp
Original Assignee
Hooker Chemical Corp
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 Hooker Chemical Corp filed Critical Hooker Chemical Corp
Publication of GB869302A publication Critical patent/GB869302A/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
    • C08G8/04—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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

Abstract

A dry, free-flowing moulding powder comprises discrete particles of sand, wood, glass fibre or abrasive grit cold-coated with from 1-15% by weight of the particles of a thermosetting resin which is the partially reacted one stage solid product of formaldehyde and phenol in the ratio of at least 1 mole of formaldehyde per mole of phenol. The powder is made by mixing the resin in powdered form with the filler particles, and after the addition of alcohol and water, mixing is continued at room temperature until the particles are coated with the resin. The mixture becomes dry and free-flowing after mixing for 15 minutes. If desired, mould lubricants, e.g. calcium stearate and carnauba and montan waxes, may be added. In Examples (1 to 8) sand; (9) silicon carbide abrasive grit, and (10) ground hardwood waste, are coated in the above manner. Specifications 842,632 and 853,940 are referred to.ALSO:Particles of sand or silicon carbide are cold coated with 1 to 15% (by wt. of the particles) of a thermosetting resin which is the partially reacted one stage solid product of formaldehyde and phenol in the ratio of at least 1 mole of formaldehyde per mole of phenol. The coating is effected by mixing the powdered resin with the particles and after the addition of water and alcohol, mixing is continued for about 15 minutes at room temperature whereupon the mixture becomes dry and free flowing. In Examples (1 to 8) sand and (9) silicon carbide abrasive grit, are coated in the above manner. Specifications 842,632 and 853,940 are referred to.
GB38527/57A 1956-12-24 1957-12-11 Phenolic resin-coated moulding powders Expired GB869302A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US869302XA 1956-12-24 1956-12-24
US1201456XA 1956-12-24 1956-12-24
US1203947XA 1956-12-24 1956-12-24

Publications (1)

Publication Number Publication Date
GB869302A true GB869302A (en) 1961-05-31

Family

ID=31982226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38527/57A Expired GB869302A (en) 1956-12-24 1957-12-11 Phenolic resin-coated moulding powders

Country Status (2)

Country Link
FR (1) FR1201456A (en)
GB (1) GB869302A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2039319A1 (en) * 1969-04-21 1971-01-15 Hooker Chemical Corp
WO1982003630A1 (en) * 1981-04-24 1982-10-28 Enterprises Inc Empire Compositions,processes,and writing elements employing resins of the thermosetting type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2039319A1 (en) * 1969-04-21 1971-01-15 Hooker Chemical Corp
WO1982003630A1 (en) * 1981-04-24 1982-10-28 Enterprises Inc Empire Compositions,processes,and writing elements employing resins of the thermosetting type
US4371632A (en) 1981-04-24 1983-02-01 Empire Enterprises, Inc. Compositions, processes, and writing elements employing resins of the thermosetting type

Also Published As

Publication number Publication date
FR1201456A (en) 1959-12-30

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