EP 4326787 A1 20240228 - BIAXIALLY ORIENTED POLYPROPYLENE FILM, METHOD FOR PREPARING THE SAME AND USE THEREOF
Title (en)
BIAXIALLY ORIENTED POLYPROPYLENE FILM, METHOD FOR PREPARING THE SAME AND USE THEREOF
Title (de)
BIAXIAL ORIENTIERTE POLYPROPYLENFOLIE, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG
Title (fr)
FILM DE POLYPROPYLÈNE À ORIENTATION BIAXIALE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION
Publication
Application
Priority
- SG 10202104076W A 20210421
- SG 2022050189 W 20220401
Abstract (en)
[origin: WO2022225450A1] The invention relates to biaxially oriented polypropylene film comprising a composition comprising a polypropylene and a beta-nucleating agent, wherein: the biaxially oriented polypropylene film has a porosity calculated according to the following formula of less than 0.01, alternatively 0.001, alternatively 0.0001, alternatively 0.00001, alternatively about 0-0.00001, Porosity = [1-(d1/d0)] • 100 wherein d1 is the density of the biaxially oriented polypropylene film after stretching, and d0 is the density of the biaxially oriented polypropylene film before stretching; and the composition has a crystallization half-time at 136°C in the range of 1 to 10 min, preferably 2-6 min determined by differential scanning calorimetry under isothermal conditions; an MFR2 in the range of 2-10 g/10 min, preferably 2-5 g/10 min; and the polypropylene has a tacticity in the range of 93 to 99 %, preferably 94 to 98 %, a method for preparing the same and an article using the same.
IPC 8 full level
C08F 10/06 (2006.01); B29C 55/12 (2006.01); B29D 7/01 (2006.01); C08J 5/18 (2006.01)
CPC (source: EP)
B29C 55/12 (2013.01); B29D 7/01 (2013.01); C08F 110/06 (2013.01); C08J 5/18 (2013.01); B29K 2023/12 (2013.01); C08J 2323/12 (2013.01)
C-Set (source: EP)
C08F 110/06 + C08F 2500/12 + C08F 2500/04 + C08F 2500/15 + C08F 2500/26
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022225450 A1 20221027; EP 4326787 A1 20240228; JP 2024515601 A 20240410
DOCDB simple family (application)
SG 2022050189 W 20220401; EP 22792109 A 20220401; JP 2023562548 A 20220401