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Strong-hydrophobicity long chain alpha-olefin amphiphilic graft copolymer

A technology of olefin copolymers and graft copolymers, which is applied in the field of strong lipophilic long-chain α-olefin amphiphilic graft copolymers and its preparation, and can solve problems such as difficult solubility in non-polar or polar solvents

Inactive Publication Date: 2008-04-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reported amphiphilic copolymers containing ethylene or propylene units are all crystalline polymers, which are difficult to dissolve in non-polar or polar solvents at room temperature.

Method used

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  • Strong-hydrophobicity long chain alpha-olefin amphiphilic graft copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Step 1) thoroughly remove oxygen and water in the reactor, add successively the heptane solution of 40 milliliters of n-heptane, 8.71 milliliters of 1-hexene, 1.29 milliliters of p-methylstyrene, 0.833 milliliters of triisobutylaluminum (concentration 2mol / L), the heptane solution (concentration 0.5mol / L) of 0.133 milliliters of diphenyldimethoxysilane, the heptane solution (concentration 0.05mol / L) of 0.785 milliliters of diethylzinc, 0.044 gram main catalyst, Polymerization was carried out at 50°C for 2 hours to obtain 4.28 g of a p-methylstyrene-1-hexene copolymer. The content of p-methylstyrene structural unit in this copolymer is 11.57% (mole percentage composition), and molecular weight is 5.5 * 10 4 g / mol.

[0016] Step 2) 0.35 grams of the above-mentioned copolymers are dissolved in 15 milliliters of carbon tetrachloride, then the solution is put into an ice-water bath, slowly add 0.2 milliliters of hydrobromic acid (concentration 40%), then slowly add 0.1 mil...

Embodiment 2

[0019] Step 1) thoroughly remove oxygen and water in the reactor, add successively the heptane solution of 40 milliliters of n-heptane, 4.57 milliliters of 1-dodecene, 5.43 milliliters of p-methylstyrene, 0.675 milliliters of triisobutylaluminum (concentration 2mol / L), 0.11 milliliters of diphenyldimethoxysilane heptane solution (concentration 0.5mol / L), 2.47 milliliters of diethylzinc heptane solution (concentration 0.05mol / L), 0.04 gram main catalyst, Polymerization was carried out at 50°C for 2 hours to obtain 3.48 g of p-methylstyrene-1-dodecene copolymer. The content of p-methylstyrene structural unit in this copolymer is 58.5% (mole percentage composition), and molecular weight is 3.3 * 10 4 g / mol.

[0020] Step 2) 1.44 grams of the above copolymers are dissolved in 70 milliliters of carbon tetrachloride, then the solution is put into an ice-water bath, slowly add 2 milliliters of hydrobromic acid (concentration 40%), then slowly add 1 milliliter of 30% Hydrogen peroxi...

Embodiment 3

[0023] Step 1) thoroughly remove oxygen and water in the reactor, add successively the heptane solution of 40 milliliters of n-heptane, 8.71 milliliters of 1-dodecene, 1.29 milliliters of p-methylstyrene, 0.833 milliliters of triisobutylaluminum (concentration 2mol / L), 0.133 milliliters of diphenyldimethoxysilane heptane solution (concentration 0.5mol / L), 0.785 milliliters of diethylzinc heptane solution (concentration 0.05mol / L), 0.042 gram main catalyst, Polymerization was carried out at 50°C for 2 hours to obtain 3.88 g of p-methylstyrene-1-dodecene copolymer. The content of p-methylstyrene structural unit in this copolymer is 14.66% (mole percentage composition), and molecular weight is 5.49 * 10 4 g / mol.

[0024] Step 2) 1.2 grams of the above-mentioned copolymers are dissolved in 60 milliliters of carbon tetrachloride, then the solution is put into an ice-water bath, slowly add 1.5 milliliters of hydrobromic acid (concentration 40%), then slowly add 0.8 milliliters of...

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Abstract

The present invention discloses a strong lipophilic long chain Alpha-olefin amphiphilic graft copolymer and a preparation method thereof. The present invention takes a long chain Alpha-olefin-p-methylstyrene copolymer as the matrix; the polyethylene glycol with one hydroxyl terminal is grafted on the chain of the copolymer by a bromination reaction and an etherification reaction. A molecular structure (such as the grafting density and graft length) of the graft copolymer can be effectively controlled by the method. The preparation method of the strong lipophilic long chain Alpha-olefin amphiphilic graft copolymer which is related by the present invention has simple process and convenient operation, the graft copolymer can be fully dissolved in the non-polar solvent (such as, n-octane, petrol, diesel, etc.) under the room temperature, the present invention has the broad application prospect in emulsible oil, cosmetics, inverse emulsion polymerization, non-polar membrane surface modification and other fields.

Description

technical field [0001] The invention relates to a strong lipophilic long-chain alpha-olefin amphiphilic graft copolymer and a preparation method thereof. Background technique [0002] The inherent non-polarity of polyolefin makes its printability, adhesion and compatibility with other materials poor. Modified polyolefins can be widely used in polymer blends and composite materials. Therefore, the chemical modification of polyolefins has always attracted the attention of academia and business circles. How to introduce polar groups or polar polymers into polyolefins has gradually become a research hotspot in recent years. Most studies on amphiphilic copolymers are limited to the preparation of polystyrene and polyethylene oxide graft copolymers or block copolymers. There have been some reports in recent years on the research on amphiphilic copolymers of other polyolefins containing polar groups or polar polymers, such as the Institute of Chemistry, Chinese Academy of Science...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F8/20C08F210/14
Inventor 傅智盛刘敏范志强徐君庭王齐
Owner ZHEJIANG UNIV
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