JPS56159212A - Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals - Google Patents

Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals

Info

Publication number
JPS56159212A
JPS56159212A JP6340680A JP6340680A JPS56159212A JP S56159212 A JPS56159212 A JP S56159212A JP 6340680 A JP6340680 A JP 6340680A JP 6340680 A JP6340680 A JP 6340680A JP S56159212 A JPS56159212 A JP S56159212A
Authority
JP
Japan
Prior art keywords
isocyanate groups
terminals
production
aliphatic diisocyanate
urethane prepolymer
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
JP6340680A
Other languages
Japanese (ja)
Other versions
JPS6353209B2 (en
Inventor
Kaoru Kamiyanagi
Teru Ide
Masanori Imaoka
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 Chemical Industry Co Ltd
Original Assignee
Asahi Chemical 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 Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP6340680A priority Critical patent/JPS56159212A/en
Publication of JPS56159212A publication Critical patent/JPS56159212A/en
Publication of JPS6353209B2 publication Critical patent/JPS6353209B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Adhesives Or Adhesive Processes (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Paints Or Removers (AREA)

Abstract

PURPOSE: The reaction between an excess amount of aliphatic diisocyanate and an alkylene diol with a branched chain is followed by removal of the excess of the diisocyanate, thus producing the titled prepolymer free from yellowing, toxicity and irritation.
CONSTITUTION: The reaction is effected between (A) an aliphatic diisocyanate, preferably hexamethylenediisocyanate (HMDI) and (B) an alkylene diol of 3W10 carbon atoms, bearing branches, preferably 1,3-butane diol. Then, the unreacted HMDI is removed from the reaction mixture using, e.g., a thin-film evaporator to give the objective bifunctional prepolymer. The molar ratio of the aliphatic diisocyanate to the alkylene diol is preferably more than 4 and the remaining isocyanate groups is preferably less than 0.7wt%.
USE: Foaming agent, adhesive, sealing agent, flooring material.
COPYRIGHT: (C)1981,JPO&Japio
JP6340680A 1980-05-15 1980-05-15 Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals Granted JPS56159212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6340680A JPS56159212A (en) 1980-05-15 1980-05-15 Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6340680A JPS56159212A (en) 1980-05-15 1980-05-15 Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals

Publications (2)

Publication Number Publication Date
JPS56159212A true JPS56159212A (en) 1981-12-08
JPS6353209B2 JPS6353209B2 (en) 1988-10-21

Family

ID=13228381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6340680A Granted JPS56159212A (en) 1980-05-15 1980-05-15 Production of liquid aliphatic urethane prepolymer bearing isocyanate groups on both terminals

Country Status (1)

Country Link
JP (1) JPS56159212A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6112678A (en) * 1984-06-28 1986-01-21 Dainippon Ink & Chem Inc Preparation of improved polyisocyanate
JPS6128518A (en) * 1984-07-20 1986-02-08 Asahi Chem Ind Co Ltd Production of prepolymer for ductile polyurethane coating
EP0210566A2 (en) * 1985-08-02 1987-02-04 Bayer Ag Process for the fabrication of light resistant, elastic polyurethane molded parts
JPS63264663A (en) * 1987-04-20 1988-11-01 Kuraray Co Ltd Polyurethane article of good yellowing resistance and its production

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6112678A (en) * 1984-06-28 1986-01-21 Dainippon Ink & Chem Inc Preparation of improved polyisocyanate
JPS6128518A (en) * 1984-07-20 1986-02-08 Asahi Chem Ind Co Ltd Production of prepolymer for ductile polyurethane coating
JPH0340048B2 (en) * 1984-07-20 1991-06-17
EP0210566A2 (en) * 1985-08-02 1987-02-04 Bayer Ag Process for the fabrication of light resistant, elastic polyurethane molded parts
JPS63264663A (en) * 1987-04-20 1988-11-01 Kuraray Co Ltd Polyurethane article of good yellowing resistance and its production

Also Published As

Publication number Publication date
JPS6353209B2 (en) 1988-10-21

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