JPS5431499A - Preparation of polyurethane foam of low specific gravity - Google Patents

Preparation of polyurethane foam of low specific gravity

Info

Publication number
JPS5431499A
JPS5431499A JP9760277A JP9760277A JPS5431499A JP S5431499 A JPS5431499 A JP S5431499A JP 9760277 A JP9760277 A JP 9760277A JP 9760277 A JP9760277 A JP 9760277A JP S5431499 A JPS5431499 A JP S5431499A
Authority
JP
Japan
Prior art keywords
polyurethane foam
specific gravity
preparation
low specific
isocyanate
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
JP9760277A
Other languages
Japanese (ja)
Other versions
JPS5645493B2 (en
Inventor
Sadao Kumasaka
Satomi Tada
Koretoshi Katsuki
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.)
Toyo Quality One Corp
Original Assignee
Toyo Rubber Chemical Industrial 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 Toyo Rubber Chemical Industrial Co Ltd filed Critical Toyo Rubber Chemical Industrial Co Ltd
Priority to JP9760277A priority Critical patent/JPS5431499A/en
Publication of JPS5431499A publication Critical patent/JPS5431499A/en
Publication of JPS5645493B2 publication Critical patent/JPS5645493B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polyurethanes Or Polyureas (AREA)

Abstract

PURPOSE: To manufacture a polyurethane foam of ultralow specific gravity, by reaction of a polyol with an organic isocyanate to yield an urethane prepolymer containing a specific amount of isocyanate followed by adding water to carry out expansion.
COPYRIGHT: (C)1979,JPO&Japio
JP9760277A 1977-08-15 1977-08-15 Preparation of polyurethane foam of low specific gravity Granted JPS5431499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9760277A JPS5431499A (en) 1977-08-15 1977-08-15 Preparation of polyurethane foam of low specific gravity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9760277A JPS5431499A (en) 1977-08-15 1977-08-15 Preparation of polyurethane foam of low specific gravity

Publications (2)

Publication Number Publication Date
JPS5431499A true JPS5431499A (en) 1979-03-08
JPS5645493B2 JPS5645493B2 (en) 1981-10-27

Family

ID=14196773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9760277A Granted JPS5431499A (en) 1977-08-15 1977-08-15 Preparation of polyurethane foam of low specific gravity

Country Status (1)

Country Link
JP (1) JPS5431499A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228597A (en) * 1975-08-29 1977-03-03 Toyo Rubber Chem Ind Co Ltd Process for producing rigid urethane foams having extremely low densit y

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228597A (en) * 1975-08-29 1977-03-03 Toyo Rubber Chem Ind Co Ltd Process for producing rigid urethane foams having extremely low densit y

Also Published As

Publication number Publication date
JPS5645493B2 (en) 1981-10-27

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