Dendritic polymer, dendritic polymer monomer, and preparation methods and application of two

A dendritic, polymer technology, used in chemical instruments and methods, sulfonate preparation, drilling compositions, etc., can solve problems such as decreased viscosity

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the current linear polymers have reduced viscosity-increasing ability under high salinity conditions, they can no longer fully meet the needs of drilling, so the current water-based CaCl 2 / The focus of polymer drilling fluids is to develop suitable for water-based CaCl 2 / Polymer treatment agent for polymer drilling fluid

Method used

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  • Dendritic polymer, dendritic polymer monomer, and preparation methods and application of two
  • Dendritic polymer, dendritic polymer monomer, and preparation methods and application of two
  • Dendritic polymer, dendritic polymer monomer, and preparation methods and application of two

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Experimental program
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preparation example Construction

[0052] According to the preparation method of a dendritic polymer provided by the present invention, when the dendritic polymer has the structure shown in the above formula (III) and / or formula (IV), the method includes the following steps:

[0053] (1) Preparation of intermediates having the structures shown in the following formula (5) and / or formula (6),

[0054]

[0055]

[0056] In formula (5) and formula (6), R 1 Represents an alkylene group with 1-5 carbon atoms, R 2 -R 4 The same or different, each independently being H or an alkyl group with 1-5 carbon atoms, and n R in the structure shown in formula (I) 1 -R 4 are independently the same or different;

[0057] (2) Under the conditions of nucleophilic addition reaction, the intermediate is contacted with an unsaturated acid anhydride represented by the following formula (7) to form a carboxylic acid amide containing an unsaturated bond,

[0058]

[0059] In formula (7), R 8 -R 13 The same or different, ...

Embodiment approach

[0092] According to a preferred embodiment of the present invention, the preparation method of the dendritic polymer monomer may include the following steps: adding the above-mentioned dendritic polymer, organic solvent and acid-binding agent into a reaction flask equipped with a cooling device, cooling to 5°C, and then slowly add the unsaturated acid halide (the temperature during the addition should not exceed 15°C). After adding the unsaturated acid halide, react at about 10°C for 0.5-8h. The reactant was left standing, the organic phase was separated, neutralized and washed several times with saturated sodium bicarbonate solution, dried with anhydrous sodium sulfate, and the organic solvent was evaporated to obtain the crude product, which was further purified to obtain the polymer grade The product is the dendrimer monomer.

[0093] The unsaturated acid halide can be unsaturated acid chloride and / or unsaturated acid bromide, the number of carbon atoms of the unsaturated a...

preparation example 1

[0101] Synthesis of intermediates.

[0102] First synthesize the intermediate according to the conventional method:

[0103] (I) Add methyl acrylate, ethanolamine and methanol in the reaction kettle according to the molar ratio of 1:0.5:15, at room temperature and through N 2 Stirring for 30 minutes under normal conditions, then raising the temperature to 35°C for 4 hours, and then distilling under reduced pressure to remove methanol to obtain a product with the structure shown in formula (5a).

[0104]

[0105] (II) Add the product with the structure shown in formula (5a) and methanol into the reaction kettle according to the weight ratio of 1:3, and add ethylenediamine (the mole of the product with the structure shown in formula (5a) The ratio is 1:1.05) after reaction for 24h, and then distilled under reduced pressure to remove methanol to obtain the intermediate product shown in the structure of formula (5b).

[0106]

[0107] (III) Add the intermediate product of ...

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Abstract

The invention discloses a dendritic polymer, dendritic polymer monomer, and preparation methods and application of the two. The dendritic polymer monomer has the structure of Z'-(Q)n-Y, wherein the Z' has the structure shown as a formula (a) and / or a formula (b), Q represents the dendritic repeated structure unit of the dendritric polymer monomer, n represents the generation quantity of the dendritric polymer monomer and is an integer of 2-6, Y represents a group containing SO3- and COO-, and R2-R4 are same or different and independently represent H or an alkyl with the carbon atom number of 1-5. The monomer can be used as a copolymerization monomer for preparing a hyperbranched polymer for oil fields, the obtained hyperbranched polymer can be used as a drilling-fluid inhibitive filtrate reducer, a flocculating agent, an encapsulating agent, a temperature-resistant salt-resistant polymer oil displacement agent, a fracturing-fluid thickening agent and the like, and the monomer also can be used to prepare other-purpose water-soluble polymers and inner surfactant for emulsion polymerization.

Description

technical field [0001] The present invention relates to a dendritic polymer and a dendritic polymer monomer as well as their preparation method and application. Background technique [0002] In terms of emulsion polymerization, by using a suitable surfactant, the obtained emulsion or inverse emulsion can make a qualitative leap in the product quality of the application system, but the residual surfactant in the polymerization reaction also brings a series of problems. At present, there have been many patent documents proposing the use of certain polymerizable surfactants in the emulsion polymerization process. For example, US4939283 describes a kind of polymerizable surfactant obtained by the reaction of traditional nonionic surfactant and allyloxy glycidyl ether, US5296627 describes a kind of ethylene-terminated allyloxy polymerizable surfactant, US6649718 A polymerizable surfactant obtained by reacting long-chain alkylene oxide and allyl alcohol is described. US7026418 de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C07C309/17C07C303/32C08F220/56C08F220/38C08F220/60C09K8/035
Inventor 王中华
Owner CHINA PETROLEUM & CHEM CORP
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