JPS5555122A - Heat decompositing method of styrene polymer - Google Patents

Heat decompositing method of styrene polymer

Info

Publication number
JPS5555122A
JPS5555122A JP12919278A JP12919278A JPS5555122A JP S5555122 A JPS5555122 A JP S5555122A JP 12919278 A JP12919278 A JP 12919278A JP 12919278 A JP12919278 A JP 12919278A JP S5555122 A JPS5555122 A JP S5555122A
Authority
JP
Japan
Prior art keywords
molecular weight
cracking
yield
cracking temperature
styrene
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
JP12919278A
Other languages
Japanese (ja)
Inventor
Kiyoshi Saito
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP12919278A priority Critical patent/JPS5555122A/en
Publication of JPS5555122A publication Critical patent/JPS5555122A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To obtain styrene oligomers having desired molecular weight distribution, and a hydrocarbon oil containing desired components, in high purity and yield, by the thermal cracking of styrene resins at a controlled cracking temperature.
CONSTITUTION: Waste styrene resins are cracked at 200W420°C for several minutes to several tens hours. When the cracking is carried out at 360W420°C, oligomers having a weight average molecular weight of 400W700, and a molecular weight distribution of from 300W2500 are obtained at an yield of about 30wt%, and when the cracking temperature is 200W280°C, the molecular weight distribution, the weight average molecular weight, and the yield of the resulting oligomer are 2500W 30000, 7000W9900, and 45W60wt%, respectively. On the other hand, the composition of the resulting hydrocarbon oil varies with the cracking temperature, i.e. the upper limit of the polymerization degree of styrene contained in the oil is 7 at a cracking temperature of 240W280°C, 4 at 300W380°C, and 3 at 400W420°C.
COPYRIGHT: (C)1980,JPO&Japio
JP12919278A 1978-10-19 1978-10-19 Heat decompositing method of styrene polymer Pending JPS5555122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12919278A JPS5555122A (en) 1978-10-19 1978-10-19 Heat decompositing method of styrene polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12919278A JPS5555122A (en) 1978-10-19 1978-10-19 Heat decompositing method of styrene polymer

Publications (1)

Publication Number Publication Date
JPS5555122A true JPS5555122A (en) 1980-04-22

Family

ID=15003411

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12919278A Pending JPS5555122A (en) 1978-10-19 1978-10-19 Heat decompositing method of styrene polymer

Country Status (1)

Country Link
JP (1) JPS5555122A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228493A (en) * 1989-02-17 1990-08-29 Guangdong International Econom A method for recovering styrene monomer from discarded polystyrene scrap through pyrolytic reduction
US5386070A (en) * 1991-06-07 1995-01-31 Midwest Research Institute Pyrolysis of polystyrene - polyphenylene oxide to recover styrene and useful products

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4947914A (en) * 1971-09-16 1974-05-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4947914A (en) * 1971-09-16 1974-05-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228493A (en) * 1989-02-17 1990-08-29 Guangdong International Econom A method for recovering styrene monomer from discarded polystyrene scrap through pyrolytic reduction
GB2228493B (en) * 1989-02-17 1992-08-19 Guangdong International Econom A method for retrieving styrene monomer from discarded polystyrene scrap through pyrolytic reduction
US5386070A (en) * 1991-06-07 1995-01-31 Midwest Research Institute Pyrolysis of polystyrene - polyphenylene oxide to recover styrene and useful products

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