JPS5723619A - Preparation of flame-retardant rigid polyurethane foam - Google Patents

Preparation of flame-retardant rigid polyurethane foam

Info

Publication number
JPS5723619A
JPS5723619A JP9687680A JP9687680A JPS5723619A JP S5723619 A JPS5723619 A JP S5723619A JP 9687680 A JP9687680 A JP 9687680A JP 9687680 A JP9687680 A JP 9687680A JP S5723619 A JPS5723619 A JP S5723619A
Authority
JP
Japan
Prior art keywords
flame
addition
foam
preparation
polyurethane foam
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
JP9687680A
Other languages
Japanese (ja)
Inventor
Kazuya Uenishi
Motoyasu Kunugiza
Masayuki Ito
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.)
DIC Corp
Original Assignee
Dainippon Ink and Chemicals 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 Dainippon Ink and Chemicals Co Ltd filed Critical Dainippon Ink and Chemicals Co Ltd
Priority to JP9687680A priority Critical patent/JPS5723619A/en
Publication of JPS5723619A publication Critical patent/JPS5723619A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyurethanes Or Polyureas (AREA)

Abstract

PURPOSE: To prepare the titled foam having self-extinguishing characteristics without using a flame-retardant, by the use of a polyol obtained by the addition condensation of a dihydroxydiphenyl compound and formaldehyde, followed by addition of an alkylene oxide.
CONSTITUTION: 1mol of a dihydroxydiphenyl compound of formula (R and R' are H or alkyl) is subjected to the addition condensation with 0.3W0.9mol of formaldehyde to obtain a liquid product containing 20W60wt% of the polymer or oligomer of said dihydroxydiphenyl compound. Addition of an alkylene oxide to the liquid product gives a polyoxyalkylene polyol, which is made to react with polyisocyanate in the presence of a foaming agent, a catalyst, a foam stabilizer, etc.
EFFECT: The foam thus obtained has no surface friability and has excellent strength and dimensional stability.
COPYRIGHT: (C)1982,JPO&Japio
JP9687680A 1980-07-17 1980-07-17 Preparation of flame-retardant rigid polyurethane foam Pending JPS5723619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9687680A JPS5723619A (en) 1980-07-17 1980-07-17 Preparation of flame-retardant rigid polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9687680A JPS5723619A (en) 1980-07-17 1980-07-17 Preparation of flame-retardant rigid polyurethane foam

Publications (1)

Publication Number Publication Date
JPS5723619A true JPS5723619A (en) 1982-02-06

Family

ID=14176613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9687680A Pending JPS5723619A (en) 1980-07-17 1980-07-17 Preparation of flame-retardant rigid polyurethane foam

Country Status (1)

Country Link
JP (1) JPS5723619A (en)

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