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Propylene/1-hexene copolymer composition with broad sealing window

A technology of propylene copolymer and composition, which is applied in the direction of coating, etc., and can solve problems such as the contradiction between finished product performance and processing performance

Active Publication Date: 2015-07-01
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, finished product properties and processability are often at odds with each other

Method used

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  • Propylene/1-hexene copolymer composition with broad sealing window
  • Propylene/1-hexene copolymer composition with broad sealing window
  • Propylene/1-hexene copolymer composition with broad sealing window

Examples

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preparation example Construction

[0097] Furthermore, the present invention relates to a process for the preparation of the propylene copolymer composition (P) of the present invention. Therefore, the process for preparing the propylene copolymer composition (P) as described above is a continuous polymerization process comprising at least two reactors connected in sequence, wherein said process comprises the following steps:

[0098] (A) In the first reactor (R-1), propylene and optionally at least one C 5 -C 12 α-olefins, preferably 1-hexene, are reacted to obtain the polypropylene (A) described in any one of claims 1, 2, 8-10, and the first reactor (R-1) is a slurry reaction device (SR), preferably loop reactor (LR),

[0099] (B) Transfer the polypropylene (A) and unreacted comonomer in the first reactor to the second reactor (R-2), which is a gas phase reaction device (GPR-1),

[0100] (C) combining propylene and at least one C 4 -C 10 α-olefins are fed to the second reactor (R-2),

[0101] (D) In ​​...

Embodiment

[0197] A. Determination method

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Abstract

Propylene copolymer composition (P) comprising (a) at least 2.5 wt.-% of units derivable from C 5 to C 12 ±-olefins, (b) at least 20.0 wt-%. of a crystalline fraction having a lamella thickness of more than 5.70 nm, and (c) at least 10.0 wt-%. of a crystalline fraction having a lamella thickness of below than 3.0 nm, said crystalline fractions are determined by the stepwise isothermal segregation technique (SIST).

Description

technical field [0001] The present invention relates to a novel propylene copolymer composition, its production method and use. Background technique [0002] Polypropylene is suitable for many applications. For example, polypropylene can be used in areas where sealing properties play an important role, such as in the food packaging industry. Regardless of the polymer type, the polymer must satisfy as far as possible all desired end-product properties and, additionally, must be easy to process, ie must be able to withstand pressure. However, finished product properties and processing properties are often at odds with each other. [0003] In many cases, the seal formed between the surfaces to be sealed will be placed under load while it is still warm. This means that in order to ensure a strong seal is formed even before cooling, the hot tack of polypropylene is critical. All extruded products have a window within which a seal can be created, ie within which the film or fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08J5/18C08F297/08
CPCC08L23/142C08L23/14C09D123/10C08F210/06C08L23/10C08L2205/02C08J2323/14C08J2323/10C08L23/12C08J5/18C08L2666/06C08F2/001C08F210/14C08F2500/11C08F2500/12C08F2500/21C08F297/08
Inventor J·帕维莱宁P·多舍夫K·赖歇尔特P·莱斯基宁H·米耶蒂宁
Owner BOREALIS AG
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