Hydrocarbon-Soluble Borate Cocatalyst Composition for Polymerization

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Solution Overview

Problem

Conventional borate compounds used as cocatalysts in olefin and diene polymerization are not soluble in hydrocarbon solvents, particularly aliphatic hydrocarbons, and can act as catalyst poisons due to impurities, leading to reduced reaction efficiency.

Innovation Solution

A composition containing specific borate compounds represented by formulas (1) and (4), with carefully selected substituents and carbon numbers, ensuring solubility in hydrocarbon solvents and preventing catalyst poisoning, formulated to enhance polymerization reactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If general tetrakis(pentafluorophenyl)borate compounds are used as cocatalysts, then thermal stability is improved and stoichiometric ratio is reduced, but solubility in hydrocarbon solvents deteriorates and phase separation occurs

Engineering Contradiction:

Improvethermal stabilityVSAvoidsolubility in hydrocarbon solvents

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent modifies the physical and chemical parameters of the borate compound by introducing long-chain alkyl groups (C10-C30) at the nitrogen atom position, changing the compound from non-soluble to soluble in hydrocarbon solvents while maintaining thermal stability and catalytic activity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite structure by combining the tetrakis(pentafluorophenyl)borate anion with long-chain alkylated ammonium cations, resulting in a new class of soluble borate compounds that exhibit both thermal stability and hydrocarbon solubility

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If lithium tetrakis(pentafluorophenyl)borate and hydrochloride of dialkylmethylamine are reacted to produce soluble borate compounds, then solubility in hydrocarbon solvents is improved, but catalyst poisoning occurs due to remaining impurities

Engineering Contradiction:

Improvesolubility in hydrocarbon solventsVSAvoidcatalyst poisoning

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent removes harmful impurities (ether complexes, protic acid salts) from the reaction system through careful selection of reaction conditions and purification methods, extracting only the beneficial soluble borate compound while eliminating catalyst-poisoning contaminants

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts potentially harmful reaction byproducts into beneficial outcomes by controlling the reaction to produce only the desired soluble borate compound, using the reaction process itself to eliminate impurities rather than adding separate purification steps

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Adaptability or versatility

If trialkylamine is used as amine compound in the production method, then solubility in hydrocarbon solvents is improved, but catalyst poisoning occurs due to high basicity and nucleophilic property

Engineering Contradiction:

Improvesolubility in hydrocarbon solventsVSAvoidcatalyst poisoning

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality modification by introducing long-chain alkyl groups specifically at the nitrogen atom position of the ammonium cation, creating a localized hydrophobic region that enhances solubility without affecting the catalytic activity at the reaction center

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12577328B2Borate compound-containing composition

Publication Date: 2026.03.17 AGC INC

AI summary

A borate compound-composition may contain soluble in hydrocarbon solvents and useful as a cocatalyst for solution polymerization of olefins or dienes. A composition containing a compound of formula (1)anda compound of formula (4):wherein each symbol is as defined in the specification, which is useful as a cocatalyst for polymerization of olefins or dienes, and a production method thereof can be provided.