JPS55133415A - Preparation of organic, self-curing liquid phenolic resin composition for mold - Google Patents

Preparation of organic, self-curing liquid phenolic resin composition for mold

Info

Publication number
JPS55133415A
JPS55133415A JP4142979A JP4142979A JPS55133415A JP S55133415 A JPS55133415 A JP S55133415A JP 4142979 A JP4142979 A JP 4142979A JP 4142979 A JP4142979 A JP 4142979A JP S55133415 A JPS55133415 A JP S55133415A
Authority
JP
Japan
Prior art keywords
steam
resin composition
phenolic resin
mold
self
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
JP4142979A
Other languages
Japanese (ja)
Other versions
JPS5817211B2 (en
Inventor
Isao Kai
Toshiaki Baba
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.)
Asahi Yukizai Corp
Original Assignee
Asahi Organic Chemicals Industry 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 Asahi Organic Chemicals Industry Co Ltd filed Critical Asahi Organic Chemicals Industry Co Ltd
Priority to JP54041429A priority Critical patent/JPS5817211B2/en
Publication of JPS55133415A publication Critical patent/JPS55133415A/en
Publication of JPS5817211B2 publication Critical patent/JPS5817211B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Mold Materials And Core Materials (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

PURPOSE: To prepare the title resin having excellent internal curing characteristics, without using organic solvents, while preventing the deposition of the polymer to the inner walls of the reactor, by the heat polycondensation of phenol and formaldehyde in the presence of a catalyst, followed by the flushing with steam and the dehydration treatment.
CONSTITUTION: A resin obtained by the heat polycondensation of phenol and formaldehyde in the presence of a catalyst (e.g. NaOH), is added with water under reduced pressure and with heating to generate a large amount of steam. The steam is flushed, and the resin is dehydrated by heating under reduced pressure while preventing the formation and deposition of an excessively polymerized product to the inner wall of a tube reactor to obtain the objective phenolic resin composition. The dehydration treatment is pref. carried out in a tube having an L/D ratio of ≥1,000.
COPYRIGHT: (C)1980,JPO&Japio
JP54041429A 1979-04-04 1979-04-04 Method for producing liquid phenolic resin composition for organic self-hardening molds Expired JPS5817211B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54041429A JPS5817211B2 (en) 1979-04-04 1979-04-04 Method for producing liquid phenolic resin composition for organic self-hardening molds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54041429A JPS5817211B2 (en) 1979-04-04 1979-04-04 Method for producing liquid phenolic resin composition for organic self-hardening molds

Publications (2)

Publication Number Publication Date
JPS55133415A true JPS55133415A (en) 1980-10-17
JPS5817211B2 JPS5817211B2 (en) 1983-04-05

Family

ID=12608115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54041429A Expired JPS5817211B2 (en) 1979-04-04 1979-04-04 Method for producing liquid phenolic resin composition for organic self-hardening molds

Country Status (1)

Country Link
JP (1) JPS5817211B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321292A (en) * 1976-08-10 1978-02-27 Hitachi Chem Co Ltd Preparation of phenol resin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321292A (en) * 1976-08-10 1978-02-27 Hitachi Chem Co Ltd Preparation of phenol resin

Also Published As

Publication number Publication date
JPS5817211B2 (en) 1983-04-05

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