JPS5670014A - Propylene copolymer for forming sheet - Google Patents

Propylene copolymer for forming sheet

Info

Publication number
JPS5670014A
JPS5670014A JP14605479A JP14605479A JPS5670014A JP S5670014 A JPS5670014 A JP S5670014A JP 14605479 A JP14605479 A JP 14605479A JP 14605479 A JP14605479 A JP 14605479A JP S5670014 A JPS5670014 A JP S5670014A
Authority
JP
Japan
Prior art keywords
copolymer
ethylene
unit containing
propylene copolymer
forming sheet
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
JP14605479A
Other languages
Japanese (ja)
Other versions
JPS6227091B2 (en
Inventor
Makoto Aida
Masahisa Handa
Takashi Kanbayashi
Shigeru Kimura
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP14605479A priority Critical patent/JPS5670014A/en
Publication of JPS5670014A publication Critical patent/JPS5670014A/en
Publication of JPS6227091B2 publication Critical patent/JPS6227091B2/ja
Granted legal-status Critical Current

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  • Graft Or Block Polymers (AREA)

Abstract

PURPOSE: To prepare the titled copolymer for sheet-forming use, having low sagging tendency in thermoforming and excellent thermoforming characteristics, giving a thin-walled high impact vessel, and composed of a block copolymer consisting of two kinds of copolymers having different ethylene content each other.
CONSTITUTION: The objective block copolymer having a melt index of 0.01W 0.8g/10min and an ethylene content of ≤50wt%, and composed of (A) 50W95wt% of a copolymer unit containing <20wt% ethylene ( including propylene homopolymer) and (B) 50W5wt% of another copolymer unit containing ≥20wt% of ethylene. The intrinsic viscosities of the components (A) and (B) (dl/g) satisfy the relationship, [η]B≥[η]A+0.5. The copolymer can be obtained by the two-step copolymerization of propylene and ethylene.
COPYRIGHT: (C)1981,JPO&Japio
JP14605479A 1979-11-13 1979-11-13 Propylene copolymer for forming sheet Granted JPS5670014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14605479A JPS5670014A (en) 1979-11-13 1979-11-13 Propylene copolymer for forming sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14605479A JPS5670014A (en) 1979-11-13 1979-11-13 Propylene copolymer for forming sheet

Publications (2)

Publication Number Publication Date
JPS5670014A true JPS5670014A (en) 1981-06-11
JPS6227091B2 JPS6227091B2 (en) 1987-06-12

Family

ID=15399040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14605479A Granted JPS5670014A (en) 1979-11-13 1979-11-13 Propylene copolymer for forming sheet

Country Status (1)

Country Link
JP (1) JPS5670014A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201806A (en) * 1982-05-19 1983-11-24 Chisso Corp High-melting viscoelastic polypropylene for post-processing sheet and blow molding, and its preparation
JPS59149907A (en) * 1983-02-15 1984-08-28 Idemitsu Petrochem Co Ltd Crystalline polypropylene and its production
US4499247A (en) * 1982-06-15 1985-02-12 Chisso Corporation High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same
JPS6211749A (en) * 1985-07-10 1987-01-20 Idemitsu Petrochem Co Ltd Propylene-ethylene copolymer composition

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913514A (en) * 1972-05-23 1974-02-06
JPS5113339A (en) * 1974-07-24 1976-02-02 Kobe Steel Ltd SHOMONOZURUOMOCHIIRU YOSETSUHOHO
JPS523684A (en) * 1975-06-27 1977-01-12 Showa Denko Kk Process for preparing ropylene copolymer
JPS5424995A (en) * 1977-07-27 1979-02-24 Showa Denko Kk Production of propylene copolymer
JPS5661416A (en) * 1979-10-24 1981-05-26 Sumitomo Chem Co Ltd Preparation of propylene-ethylene block copolymer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913514A (en) * 1972-05-23 1974-02-06
JPS5113339A (en) * 1974-07-24 1976-02-02 Kobe Steel Ltd SHOMONOZURUOMOCHIIRU YOSETSUHOHO
JPS523684A (en) * 1975-06-27 1977-01-12 Showa Denko Kk Process for preparing ropylene copolymer
JPS5424995A (en) * 1977-07-27 1979-02-24 Showa Denko Kk Production of propylene copolymer
JPS5661416A (en) * 1979-10-24 1981-05-26 Sumitomo Chem Co Ltd Preparation of propylene-ethylene block copolymer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201806A (en) * 1982-05-19 1983-11-24 Chisso Corp High-melting viscoelastic polypropylene for post-processing sheet and blow molding, and its preparation
US4500682A (en) * 1982-05-19 1985-02-19 Chisso Corporation High melt-viscoelastic polypropylene for post-processed sheets and for blow molding
JPS6248962B2 (en) * 1982-05-19 1987-10-16 Chisso Corp
US4499247A (en) * 1982-06-15 1985-02-12 Chisso Corporation High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same
JPS59149907A (en) * 1983-02-15 1984-08-28 Idemitsu Petrochem Co Ltd Crystalline polypropylene and its production
JPH0375562B2 (en) * 1983-02-15 1991-12-02 Idemitsu Petrochemical Co
JPS6211749A (en) * 1985-07-10 1987-01-20 Idemitsu Petrochem Co Ltd Propylene-ethylene copolymer composition
JPH057418B2 (en) * 1985-07-10 1993-01-28 Idemitsu Petrochemical Co

Also Published As

Publication number Publication date
JPS6227091B2 (en) 1987-06-12

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