Polyolefin Voltage Stabilizer Blend for Thinner Cable Insulation

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Solution Overview

Problem

Existing polyolefin formulations for electrical conductors lack sufficient electrical breakdown strength, leading to thicker insulation layers and increased cable mass, which limits the length of cables that can be wound onto a standard-size roll and reduces the ability to transmit higher voltages efficiently.

Innovation Solution

A polyolefin formulation comprising a polyolefin polymer combined with an alkoxyphenol compound and a benzophenone compound, which exhibit synergistic voltage stabilizing effects, resulting in increased electrical breakdown strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional polyolefin formulations are used, then the insulation layer must be thicker to achieve sufficient electrical breakdown strength, but this increases cable mass and reduces productivity

Engineering Contradiction:

Improveelectrical breakdown strengthVSAvoidcable mass

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent changes the chemical composition parameters of the polyolefin formulation by incorporating specific additives (benzil or benzil derivative at 0.1-5.0 wt%, and hindered amine light stabilizer at 0.1-5.0 wt%) to enhance electrical breakdown strength without increasing cable mass

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite polyolefin material by combining base polyolefin with synergistic additives (benzil/benzil derivative and hindered amine light stabilizer), where the combination produces greater electrical breakdown strength than either additive alone

Inventive Principle:

Principle #40Composite materials

2Reliability

If thicker insulation layers are used to achieve sufficient electrical breakdown strength, then reliability improves, but the length of cable that can be wound onto a standard-size roll decreases

Engineering Contradiction:

Improveelectrical breakdown strengthVSAvoidcable length per roll

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent modifies the formulation parameters by adding benzil/benzil derivative and hindered amine light stabilizer, enabling thinner insulation layers to achieve the required electrical breakdown strength, thus increasing cable length per standard roll

Inventive Principle:

Principle #35Parameter changes

3Reliability

If conventional polyolefin formulations are used, then manufacturing is simpler, but electrical breakdown strength is insufficient for higher voltage transmission

Engineering Contradiction:

Improveelectrical breakdown strengthVSAvoidformulation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent adjusts chemical composition parameters by incorporating small amounts (0.1-5.0 wt% each) of benzil/benzil derivative and hindered amine light stabilizer, achieving higher electrical breakdown strength for voltage transmission while maintaining relatively simple formulation and processing

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4381010B1Polyolefin formulation containing combination of voltage stabilizer compounds

Publication Date: 2025.07.09 DOW GLOBAL TECHNOLOGIES LLC

Figure 1

AI summary

A polyolefin formulation comprising (A) a polyolefin polymer; x weight percent (wt%) of (B) an alkoxyphenol compound of formula (I); and y wt% of (C) a benzophenone compound of formula (II) as described in the specification; wherein y is from 1 to 8 wt%; wherein x is from 0.1 to 3.0 wt%, with the proviso that x is less than 0.5y; and wherein wt% are based on total weight of the polyolefin formulation. Also crosslinked products made therefrom; methods of making and using same; and articles containing same.