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Composition comprising LDPE, polypropylene and functionalized polyolefin

A composition, polymer technology, applied in coatings, conductors, electrical components, etc., which can solve problems such as creep, reduced temperature resistance, etc.

Pending Publication Date: 2022-03-11
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the absence of cross-linked material can result in reduced temperature resistance, creating significant creep issues

Method used

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  • Composition comprising LDPE, polypropylene and functionalized polyolefin
  • Composition comprising LDPE, polypropylene and functionalized polyolefin
  • Composition comprising LDPE, polypropylene and functionalized polyolefin

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Embodiment Construction

[0027] The present invention relates to a specific polymer composition comprising (i) LDPE, (ii) polypropylene, (iii) polyolefin comprising epoxy groups (A) and (iv) comprising carboxylic acid The polyolefin (B) of the group or its precursor.

[0028] In a preferred embodiment at least one of (A) and (B) is polyethylene. More preferably, one of (A) and (B) is polyethylene and the other is polypropylene.

[0029] Generally, the compatibility between polyethylene and polypropylene is relatively low. Therefore, blends between these polymers often lead to phase separation of the system. However, the functional groups used in the present invention allow polyethylene and polypropylene to react with each other. Thus an in situ copolymer compatibilizer is formed. It reduces phase separation and produces blends with considerably higher thermomechanical properties.

[0030] In all embodiments the polyethylene is preferably low density polyethylene (LDPE).

[0031] LDPE

[0032] L...

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Abstract

The present invention provides a polymer composition, the polymer composition comprising: (i) LDPE; (ii) polypropylene; (iii) a polyolefin (A) comprising an epoxy group; and (iii) a polyolefin (B) comprising a carboxylic acid group and / or a precursor thereof.

Description

[0001] The present invention relates to polymer compositions comprising low density polyethylene (LDPE), polypropylene and two polyolefins: a polyolefin comprising epoxy groups and a polyolefin comprising carboxylic acid groups or a precursor thereof Another polyolefin. In particular, the composition of the invention offers the possibility of obtaining a polymer composition suitable for cable applications without the use of peroxides. The invention also relates to cables comprising these compositions and to methods of preparing such cables. Background technique [0002] Polyolefins produced in high pressure (HP) processes are widely used in demanding polymer applications where the polymer must meet high mechanical and / or electrical requirements. For example in power cable applications, especially in medium voltage (MV) and especially in high voltage (HV) and extra high voltage (EHV) cable applications, the electrical properties of polymer compositions for cables are of great ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/08C09D123/14H01B3/00C08F110/02C08F110/06C08F210/02C08L23/06C08L23/12
CPCC09D123/0884C09D123/147C08L23/06C08F210/02C08F110/06C08F110/02C08L23/147C08L23/0884H01B3/441C08L33/068C08L33/064C08F2500/04C08F2500/08C08F2500/09C08F2500/12C08F2500/15C08L23/12C08L51/06C08F220/325C08L23/0869C08L23/26H01B7/02C08L2207/10C08L23/04C08L2203/202C08L2205/035
Inventor 佩尔·奥拉·哈格斯特兰德托马斯·库姆皮斯奥斯卡·普列托丹尼斯·亚拉洛夫克里斯蒂安·米勒欧阳颖薇
Owner BOREALIS AG
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