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2-Vinyl-terephthalic acid bis-(4-butoxy-phenyl) ester, its polymer, preparing method and application

A technology of vinyl terephthalic acid and polyvinyl terephthalic acid, which is used in the preparation of carboxylate, the preparation of organic compounds, chemical instruments and methods, etc.

Inactive Publication Date: 2007-08-15
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are few studies on improving the processing performance of polyethylene polymers.

Method used

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  • 2-Vinyl-terephthalic acid bis-(4-butoxy-phenyl) ester, its polymer, preparing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, the synthetic vinyl terephthalate bis[p-butoxyphenol] ester of vinyl terephthalate bis[p-butoxyphenol] ester (BPCS) is shown in formula (I):

[0018] (Formula I)

[0019] Solution A was prepared by dissolving 18g of vinyl terephthalic acid and 49.88g of triphenylphosphine in 168mL of freshly steamed pyridine. Solution B was prepared by dissolving 34.18g of p-butoxyphenol and 50g of hexachloroethane in 332mL of freshly steamed pyridine. Solution B was slowly added dropwise to solution A under ice bath and stirring conditions. After reacting for 36 hours, the reactant was poured into a 1:4 mixed solvent of ethanol / water to obtain a precipitate. After filtration, the filter cake was washed several times with a 1:2 ethanol / water mixed solvent until the filtrate was colorless. After drying, a light yellow solid was obtained. The crude product was separated with a 160-200 mesh silica gel column with dichloromethane as the eluent. The product purified by c...

Embodiment 2

[0020] Embodiment 2, the preparation of polyvinyl terephthalate bis[p-butoxyphenol] ester (PBPCS)

[0021] To a 10 mL polymerization tube with a magnet was added 0.25 mg cuprous bromide (0.0017 mmol) and 0.5 g BPCS (1.02 mmol). Then 10 μL of a chlorobenzene solution containing pentamethyldiethylenetriamine (0.0017 mmol) and α-bromoethylbenzene (0.0017 mmol) was added by syringe. After adding 1.30 g of chlorobenzene, the polymerization solution was frozen, evacuated, and filled with N 2 , repeated four times, and then sealed the tube under vacuum. After the polymerization tube was reacted in an oil bath at 110°C for a period of time, the reaction was terminated and the polymerization tube was broken. After the polymer was diluted with tetrahydrofuran, it was passed through neutral Al 2 o 3 Column, precipitated with methanol. After filtration and drying, the conversion was determined gravimetrically.

[0022] The obtained polymer PBPCS has a relatively low dispersion degre...

Embodiment 3

[0023] Example 3, the application of polyvinyl terephthalate bis[p-butoxyphenol] ester as a processing additive for ultra-high molecular weight polyethylene

[0024] Ultra-high molecular weight polyethylene (UHMWPE) is produced by Beijing Organic Chemical Factory. Its physical properties are: the weight average molecular weight is 3.7 million, and the melting point measured by DSC is 142.8°C.

[0025] PBPCS and UHMWPE were dried under vacuum at 80°C for 24 hours, and were co-extruded by DACA Micro Compounder (micro twin-screw extruder) according to the proportion of PBPCS content of 0%, 0.2%, 0.5%, 2%, and 5% (weight). out of molding, the blending temperature is 200°C, and the rotation speed is 50 rpm.

[0026] Characterized by a German Thermo Haake Rheostress 300 dynamic rotational rheometer (at a temperature of 220°C), the apparent shear viscosity of UHMWPE after blending is shown in Figure 1, indicating that the apparent shear viscosity decreases when the PBPCS content is 0...

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Abstract

The invention discloses a making method and application of vinyl terephthalic acid di-[p-butoxy phenol] ester and polymer, which structure is as formula I, wherein the polymer is thermotropic typed crust typed liquid crystal polymer as UHMWPE moulding manufacturing additive.

Description

technical field [0001] The present invention relates to a kind of polymer monomer compound and polymer thereof and preparation method and application, particularly relate to vinyl terephthalate bis[p-butoxyphenol] ester (BPCS), polyvinyl terephthalate bis [p-Butoxyphenol] esters (PBPCS) and their preparation methods, and uses of the PBPCS. Background technique [0002] Ultra High Molecular Weight Polythene (UHMWPE) is an engineering plastic with excellent properties. It has high mechanical strength and impact strength, chemical corrosion resistance, especially excellent wear resistance, and light specific gravity. At the same time, UHMWPE is biocompatible and can be used as a biomedical material. However, due to the high molecular weight, the molecular chains are intertwined, and the UHMWPE melt viscosity is very high, the processing can only be limited to molding and plunger extrusion molding methods, and the use is greatly limited. At present, the common method is to imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/76C07C67/08C08G63/183C08G63/19C08L23/06
Inventor 周其凤范星河赵永峰宛新华陈小芳
Owner PEKING UNIV
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