JPS5543125A - Preparation of polyamide foam - Google Patents

Preparation of polyamide foam

Info

Publication number
JPS5543125A
JPS5543125A JP11596178A JP11596178A JPS5543125A JP S5543125 A JPS5543125 A JP S5543125A JP 11596178 A JP11596178 A JP 11596178A JP 11596178 A JP11596178 A JP 11596178A JP S5543125 A JPS5543125 A JP S5543125A
Authority
JP
Japan
Prior art keywords
lactam
mixture
carboxylic acid
polyamide foam
alkali catalyst
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.)
Pending
Application number
JP11596178A
Other languages
Japanese (ja)
Inventor
Masao Ogasa
Miyoji Matsumoto
Masao Nishiyama
Yoshiteru Akimoto
Noboru Inagaki
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP11596178A priority Critical patent/JPS5543125A/en
Publication of JPS5543125A publication Critical patent/JPS5543125A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To obtain a polyamide foam having uniform cells, without inviting the danger of toxicity, fire, and explosion, by polymerizing and foaming a blend of (A) a mixture of a lactam, an alkali catalyst, and a carboxylic acid and (B) a mixture of a lactam and an isocyanate.
CONSTITUTION: A lactam, e.g. caprolactam, is mixed with an alkali catalyst, e.g. a sodium salt of a lactam, and a carboxylic acid, preferably having a boiling point ≥150°C. The mixture is blended with a mixture of a lactam, an aromatic, alicyclic, or aromatic mono-or polyisocyanate, polymerized, and foamed under heating to give a polyamide foam. The amounts of the alkali catalyst and the isocyanate are 0.2W 4mol%, preferably 0.3W2.5mol%, and 0.1W10mol%, prferably 0.2W5mol%, based on the total lactam. The carboxylic acid is used in an amount of 0.03W1g equivalent, preferably 0.05W0.75g equivalent per mole of the catalyst.
COPYRIGHT: (C)1980,JPO&Japio
JP11596178A 1978-09-22 1978-09-22 Preparation of polyamide foam Pending JPS5543125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11596178A JPS5543125A (en) 1978-09-22 1978-09-22 Preparation of polyamide foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11596178A JPS5543125A (en) 1978-09-22 1978-09-22 Preparation of polyamide foam

Publications (1)

Publication Number Publication Date
JPS5543125A true JPS5543125A (en) 1980-03-26

Family

ID=14675412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11596178A Pending JPS5543125A (en) 1978-09-22 1978-09-22 Preparation of polyamide foam

Country Status (1)

Country Link
JP (1) JPS5543125A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57153031A (en) * 1981-03-19 1982-09-21 Ube Ind Ltd Production of polyamide foam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57153031A (en) * 1981-03-19 1982-09-21 Ube Ind Ltd Production of polyamide foam

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