IT1032025B - Polyamide foam prodn - by mixing polymerising first compsn contg molten lactam/catalyst and second liquid compsn contg pr - Google Patents

Polyamide foam prodn - by mixing polymerising first compsn contg molten lactam/catalyst and second liquid compsn contg pr

Info

Publication number
IT1032025B
IT1032025B IT5003773A IT5003773A IT1032025B IT 1032025 B IT1032025 B IT 1032025B IT 5003773 A IT5003773 A IT 5003773A IT 5003773 A IT5003773 A IT 5003773A IT 1032025 B IT1032025 B IT 1032025B
Authority
IT
Italy
Prior art keywords
contg
compsn
mixing
lactam
compsn contg
Prior art date
Application number
IT5003773A
Other languages
Italian (it)
Inventor
Kurahashi Minobu
Sato Igetake
Okuyama Ru
Mamada Boru
Original Assignee
Bridgestone Tire 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 Bridgestone Tire Co Ltd filed Critical Bridgestone Tire Co Ltd
Priority to IT5003773A priority Critical patent/IT1032025B/en
Application granted granted Critical
Publication of IT1032025B publication Critical patent/IT1032025B/en

Links

Abstract

Polyamide foam is produced by (a) forming a compsn. (I) contg. a lactam and a basic catalyst at a temp. above the m.p. of the lactam, (b) forming a liquid compsn. (II) contg. a promoter and a blowing agent at ambient temp., (c) mixing compsns. (I) and (II) with vigorous stirring to initiate the polymsn. (d) pouring the reaction mixt. into a container before the polymsn. of the lactam has exceeded 10 esp. 5%, and (e) completing the polymsn. A wide range of blowing agents can be used, including agents which volatilise and agents which decompose. Process is easily controlled and uniform foam pdts. are obtained.
IT5003773A 1973-05-17 1973-05-17 Polyamide foam prodn - by mixing polymerising first compsn contg molten lactam/catalyst and second liquid compsn contg pr IT1032025B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT5003773A IT1032025B (en) 1973-05-17 1973-05-17 Polyamide foam prodn - by mixing polymerising first compsn contg molten lactam/catalyst and second liquid compsn contg pr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5003773A IT1032025B (en) 1973-05-17 1973-05-17 Polyamide foam prodn - by mixing polymerising first compsn contg molten lactam/catalyst and second liquid compsn contg pr

Publications (1)

Publication Number Publication Date
IT1032025B true IT1032025B (en) 1979-05-30

Family

ID=11272135

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5003773A IT1032025B (en) 1973-05-17 1973-05-17 Polyamide foam prodn - by mixing polymerising first compsn contg molten lactam/catalyst and second liquid compsn contg pr

Country Status (1)

Country Link
IT (1) IT1032025B (en)

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