JPS57137341A - Preparation of modified propylene-ethylene block copolymer composition - Google Patents
Preparation of modified propylene-ethylene block copolymer compositionInfo
- Publication number
- JPS57137341A JPS57137341A JP56023150A JP2315081A JPS57137341A JP S57137341 A JPS57137341 A JP S57137341A JP 56023150 A JP56023150 A JP 56023150A JP 2315081 A JP2315081 A JP 2315081A JP S57137341 A JPS57137341 A JP S57137341A
- Authority
- JP
- Japan
- Prior art keywords
- block copolymer
- mixture
- ethylene block
- propylene
- preparation
- 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
Links
Abstract
PURPOSE: To improve the impact blushing resistance of a propylene-ethylene block copolymer without lowering its impact resistance, gloss, transparency, etc., by heating a mixture of the copolymer and high-density polyethylene in the presence of an organic peroxide.
CONSTITUTION: A mixture of (A) a propylene-ethylene block copolymer and (B) a high-density polyethylene having a desntity of ≥0.94 and esp. having a melt flow index of 3W30g/10min. (the content of the component B in the mixture is pref. 5W25wt%) is heat-treated at 180W300°C in the presence of an organic peroxide (e.g. ketone peroxide, percarbonate, etc.). The amount of the peroxide is 0.001W1.0wt%, pref. 0.01W0.5wt% of the mixture. The component (B) is, e.g. an ethylene homopolymer or an ethylene copolymer containing ≤10wt% propylene, butene-1, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56023150A JPS57137341A (en) | 1981-02-20 | 1981-02-20 | Preparation of modified propylene-ethylene block copolymer composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56023150A JPS57137341A (en) | 1981-02-20 | 1981-02-20 | Preparation of modified propylene-ethylene block copolymer composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57137341A true JPS57137341A (en) | 1982-08-24 |
JPH0144738B2 JPH0144738B2 (en) | 1989-09-29 |
Family
ID=12102542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56023150A Granted JPS57137341A (en) | 1981-02-20 | 1981-02-20 | Preparation of modified propylene-ethylene block copolymer composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57137341A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985000824A1 (en) * | 1983-08-18 | 1985-02-28 | Mitsui Toatsu Chemicals, Incorporated | Process for producing polypropylene resin composition |
WO2009008459A1 (en) * | 2007-07-06 | 2009-01-15 | Sumitomo Chemical Company, Limited | Polypropylene resin composition and film made from the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4982200A (en) * | 1972-12-12 | 1974-08-07 | ||
JPS543860A (en) * | 1977-06-13 | 1979-01-12 | Mitsubishi Chem Ind Ltd | Manufacture of modified block copolymer |
-
1981
- 1981-02-20 JP JP56023150A patent/JPS57137341A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4982200A (en) * | 1972-12-12 | 1974-08-07 | ||
JPS543860A (en) * | 1977-06-13 | 1979-01-12 | Mitsubishi Chem Ind Ltd | Manufacture of modified block copolymer |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985000824A1 (en) * | 1983-08-18 | 1985-02-28 | Mitsui Toatsu Chemicals, Incorporated | Process for producing polypropylene resin composition |
GB2155026A (en) * | 1983-08-18 | 1985-09-18 | Mitsui Toatsu Chemicals | Process for producing polypropylene composition |
US4626565A (en) * | 1983-08-18 | 1986-12-02 | Mitsui Toatsu Chemicals, Incorporated | Preparation process for polypropylene-base resin compositions |
WO2009008459A1 (en) * | 2007-07-06 | 2009-01-15 | Sumitomo Chemical Company, Limited | Polypropylene resin composition and film made from the same |
JP2009013332A (en) * | 2007-07-06 | 2009-01-22 | Sumitomo Chemical Co Ltd | Polypropylene-based resin composition and film comprising the same |
US8022148B2 (en) | 2007-07-06 | 2011-09-20 | Sumitomo Chemical Company, Limited | Polypropylene resin composition and film made thereof |
Also Published As
Publication number | Publication date |
---|---|
JPH0144738B2 (en) | 1989-09-29 |
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