JPS5478798A - Decomposition of polyurethane resin - Google Patents

Decomposition of polyurethane resin

Info

Publication number
JPS5478798A
JPS5478798A JP14596677A JP14596677A JPS5478798A JP S5478798 A JPS5478798 A JP S5478798A JP 14596677 A JP14596677 A JP 14596677A JP 14596677 A JP14596677 A JP 14596677A JP S5478798 A JPS5478798 A JP S5478798A
Authority
JP
Japan
Prior art keywords
polyurethane resin
reused
urea
mixture
raw material
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
JP14596677A
Other languages
Japanese (ja)
Inventor
Tsutomu Hyodo
Yoshitsugu Ishizuka
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.)
Adeka Corp
Original Assignee
Asahi Denka Kogyo KK
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 Denka Kogyo KK filed Critical Asahi Denka Kogyo KK
Priority to JP14596677A priority Critical patent/JPS5478798A/en
Publication of JPS5478798A publication Critical patent/JPS5478798A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

PURPOSE: To obtain the homogeneous liquid decomposition product of a polyether- type polyurethane resin, which can be reused as a raw material, by heating the resin in the mixture of a polyhydroxyl compound with urea at a low temperature.
CONSTITUTION: A polyurethane resin prepared from a polyether polyol and a polyisocyanate is crushed into blocks, granules, etc.; added to the mixture of 100 parts by weight of a polyhydroxy compound, e.g. ethylene glycol, etc. with 5W20 parts by weight of urea; and thereafter thermally decomposed at 130W180°C.
EFFECT: The decomposition product or its addition reaction product with an alkylene oxide can be reused as a raw material of the polyurethane resin.
COPYRIGHT: (C)1979,JPO&Japio
JP14596677A 1977-12-05 1977-12-05 Decomposition of polyurethane resin Pending JPS5478798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14596677A JPS5478798A (en) 1977-12-05 1977-12-05 Decomposition of polyurethane resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14596677A JPS5478798A (en) 1977-12-05 1977-12-05 Decomposition of polyurethane resin

Publications (1)

Publication Number Publication Date
JPS5478798A true JPS5478798A (en) 1979-06-23

Family

ID=15397115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14596677A Pending JPS5478798A (en) 1977-12-05 1977-12-05 Decomposition of polyurethane resin

Country Status (1)

Country Link
JP (1) JPS5478798A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0682063A1 (en) * 1994-05-09 1995-11-15 Bayer Ag Process for the preparation of compounds containing hydroxy groups from (polyurethane) polyurea waste products
EP0952178A1 (en) * 1992-06-15 1999-10-27 The Dow Chemical Company Process for conversion of polyurethane polymer to polyol and fresh polyurethane polymer therefrom
WO2001019907A1 (en) * 1999-09-16 2001-03-22 Mitsui Takeda Chemicals, Inc. Method of treating polyol recovered through decomposition and polyol recovered through decomposition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952178A1 (en) * 1992-06-15 1999-10-27 The Dow Chemical Company Process for conversion of polyurethane polymer to polyol and fresh polyurethane polymer therefrom
EP0682063A1 (en) * 1994-05-09 1995-11-15 Bayer Ag Process for the preparation of compounds containing hydroxy groups from (polyurethane) polyurea waste products
US5508312A (en) * 1994-05-09 1996-04-16 Bayer Aktiengesellschaft Process for the production of compounds containing hydroxyl groups from (polyurethane) polyurea waste materials
WO2001019907A1 (en) * 1999-09-16 2001-03-22 Mitsui Takeda Chemicals, Inc. Method of treating polyol recovered through decomposition and polyol recovered through decomposition

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