Title:
HIGH MOLTEN TENSILE FORCE POLYPROPYLENE HAVING IMPROVED QUALITY
Document Type and Number:
Japanese Patent JP2017095721
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a high molten tensile force polypropylene composition low in gel content.SOLUTION: There is provided a manufacturing method of a polypropylene composition having high molten tensile force including (a) to (c). There is provided a method for measuring molten tensile force F30 and molten stretchability v30 by ISO16790:2005. (a)Generating branched polypropylene (b-PP) having molten tensile force F30 of larger than 5.5 cN and molten stretchability v30 of larger than 200 mm/s by reacting polypropylene (PP) with a pyrolytic free radical formation agent and a difunctional unsaturated monomer. (b)Adding to the b-PP of 95 to 99 pts.wt. an additive mixture (AM) containing linear polypropylene (l-PP) of 1 to 5 pts.wt. having melt flow rate MFR(230°C) of 1 to 18 g/10 min. and one or more kind of additive (A) selected from an antioxidant, an ultraviolet stabilizer, an antistatic agent or the like. (c) Forming a film by extruding the polypropylene composition.SELECTED DRAWING: None
Inventors:
KATJA KLIMKE
HERMAN BROWN
HERMAN BROWN
Application Number:
JP2016250425A
Publication Date:
June 01, 2017
Filing Date:
December 26, 2016
Export Citation:
Assignee:
BOREALIS AG
International Classes:
C08J3/20; C08F255/02; C08L23/12; C08L51/06
Domestic Patent References:
| JP2002173564A | 2002-06-21 | |||
| JP2009256460A | 2009-11-05 | |||
| JPH07138378A | 1995-05-30 | |||
| JP2007211184A | 2007-08-23 | |||
| JPH0424376B2 | 1992-04-24 | |||
| JPH11302425A | 1999-11-02 | |||
| JP2003171515A | 2003-06-20 |
Other References:
ＤＡＰＬＯＹＴＭ ＨＭＳ ＰＯＬＹＰＲＯＰＹＬＥＮＥ ＦＯＲ ＦＯＡＭ ＥＸＴＲＵＳＩＯＮ, JPN6018011716, 2007, ISSN: 0003768514
Attorney, Agent or Firm:
Janggi Motonori