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Soft propylene copolymer composition

A technology of propylene copolymer and composition, applied in the field of propylene copolymer composition, can solve the problems such as sealing performance not improving sealing performance, oligomer migration, sealing performance or softness being unable to be fully improved

Active Publication Date: 2022-02-01
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been found that the sealing performance of blends of RAHECO with plastomers does not improve the sealing performance
Furthermore, these combinations of soft RAHECO and vinyl plastomers do not adequately improve oligomer migration, sealing properties or softness

Method used

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  • Soft propylene copolymer composition
  • Soft propylene copolymer composition
  • Soft propylene copolymer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0191] 1. Measurement method

[0192] a) Melt flow rate (MFR 2 )

[0193]Melt flow rate refers to the amount of polymer in grams extruded within 10 minutes by a test device in accordance with ISO 1133 or ASTM D1238 at a certain temperature and a certain load.

[0194] Melt flow rate MFR of propylene-based polymers except propylene-based plastomers (B) and (D) 2 It is measured according to ISO1133 at 230° C. under a load of 2.16 kg (MFR230 / 2.16).

[0195] Melt flow rate MFR of propylene-based plastomer (D) 2 is according to ISO 1133 at a temperature of 190 °C and a load of 2.16 kg when used with mold halves Measured on MFR grader MI40.

[0196] Melt flow rate MFR of propylene-based plastomer (B) 2 It is measured according to ASTM D1238 at 190° C. under a load of 2.16 kg (MFR190 / 2.16).

[0197] Melt flow rate MFR of vinyl plastomer (C) 2 Measured according to ISO 1133 at 190°C with a load of 2.16 kg (MFR190 / 2.16).

[0198] Melt flow rate MFR of propylene copolymer co...

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Abstract

The present invention relates to a propylene copolymer composition, an article comprising said propylene copolymer composition and the use of said propylene copolymer composition in a single ply roofing membrane. The composition comprises (A) from 50.0 to 90.0 wt%, based on the total amount of the propylene copolymer composition, of a heterophasic propylene copolymer having a matrix phase and an elastomeric phase dispersed in said matrix phase, wherein the matrix phase is a propylene random copolymer, the heterophasic propylene copolymer further has a melt flow rate MFR2 of 0.2 to 12.0 g / 10 min, determined according to ISO 1133 at a temperature of 230 DEG C and a load of 2.16 kg, and a xylene cold solubles (XCS) fraction in the range of from 20.0 to 50.0 wt% based on the total amount of the heterophasic propylene copolymer (A), determined according to ISO 16152 at a temperature of 25 DEG C; (B) from 5.0 to 25.0 wt%, based on the total amount of the propylene copolymer composition, of a propylene based plastomer having a density in the range of from 845 to 870 kg / m<3>, determined according to ASTM D1505 on compression moulded test specimens and a melt flow rate MFR2 of 1.0 to 30.0 g / 10 min, determined according to ISO 1133 at a temperature of 190 DEG C and a load of 2.16 kg; and (C) from 5.0 to 25.0 wt%, based on the total amount of the propylene copolymer composition, of an ethylene based plastomer having a density in the range of from 850 to 900 kg / m<3>, determined according to ISO1183D on compression moulded test specimens and a melt flow rate MFR2 of 0.5 to 30.0 g / 10 min, determined according to ISO 1133 at a temperature of 190 DEG C and a load of 2.16 kg.

Description

technical field [0001] The present invention relates to a propylene copolymer composition comprising a heterophasic propylene copolymer, a propylene-based plastomer and a vinyl plastomer, an article comprising said propylene copolymer composition and said propylene copolymer composition in a single Use in membranes for layer capping. Background technique [0002] Soft polymeric materials, such as thermoplastic polyolefin (TPO), polyvinyl chloride (PVC) or ethylene propylene diene rubber (EPDM), are commonly used in trim applications, such as in automotive applications, or for single-ply roofing. [0003] These materials can generally be divided into two categories – thermosets and thermoplastics. [0004] Thermoset plastics such as, for example, EPDM show long-term weatherability and good performance when subjected to fluctuations in temperature, UV light and ozone. Their disadvantage is that they cannot be sealed, so for decorative applications EPDM needs to be stitched, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/16C08L23/08C08J5/18
CPCC08L23/142C08J5/18C08J2323/14C08J2423/14C08J2423/08C08L23/16C08L23/0815C08L2205/035C08L2207/02C08L2203/16B32B27/12B32B27/32B32B2419/06
Inventor 约翰·迪福尔马克·克内普
Owner BOREALIS AG
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