Random and copolymer cation macromolecular emulsion and its preparation

A technology of macromolecular emulsifier and random copolymerization, which is applied in the field of copolymers to achieve the effects of high conversion rate, migration prevention, and low requirements for reaction conditions

Inactive Publication Date: 2007-01-17
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there has been no literature report so far to prepare random copolymerized cationic amphiphi...

Method used

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  • Random and copolymer cation macromolecular emulsion and its preparation
  • Random and copolymer cation macromolecular emulsion and its preparation
  • Random and copolymer cation macromolecular emulsion and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: Poly(SMA-co-DMAEMA) (1:9, molar ratio) and its preparation

[0043] (1) Preparation of reaction monomers and initiators: 2-(dimethylamino)ethyl methacrylate is used with activated basic Al 2 o 3 Column treatment, and then vacuum distillation for later use; octadecyl methacrylate was used directly; AIBN was recrystallized with absolute ethanol for later use.

[0044] (2) Preparation of polymer: Weigh 3.8g (0.01mol) of hydrophobic monomer octadecyl methacrylate (SMA), hydrophilic monomer 2-(dimethylamino) ethyl methacrylate (DMAEMA) 16.0g (0.09mol); Initiator AIBN 0.2g (weighed by 1.2% of the total monomer molar weight); Measure 1mL of n-dodecanethiol, be dissolved in 127mL (measured by 20% solid content) After stirring evenly, pour it into a 250mL four-necked bottle equipped with a stirrer, a reflux condenser, a thermometer and a nitrogen conduit, and pass N 2 , stirring at a stirring speed of 350r / min, rapidly raising the temperature to 70°C, and maintaini...

Embodiment 2

[0047] Example 2: Poly(SMA-co-DMAEMA) (2:8, molar ratio) and its preparation

[0048] (1) Preparation of reaction monomers and initiators: same as step [1] of embodiment one.

[0049] (2) Preparation of polymer: Weigh 7.0 g (0.02 mol) of hydrophobic monomer octadecyl methacrylate (SMA); hydrophilic monomer 2-(dimethylamino) ethyl methacrylate (DMAEMA) 12.6g (0.08mol); Initiator AIBN 0.2g (take by weighing 1.2% of total monomer molar weight); Measure 1mL n-dodecanethiol, be dissolved in 127ml (take by solid content 20%) After stirring evenly, pour it into a 250mL four-necked bottle equipped with a stirrer, a reflux condenser, a thermometer and a nitrogen conduit, and pass N 2 , stirring at a stirring speed of 350r / min, rapidly raising the temperature to 70°C, and maintaining this temperature and stirring speed, reacting for 3h, cooling and discharging.

[0050] (3) Purification of polymer: Rotate the reaction product in (2) at 60-70°C to remove the solvent and some unreacted ...

Embodiment 3

[0052] Example 3: Poly(SMA-co-DMAEMA) (1:9, molar ratio) and its preparation

[0053] (1) Preparation of reaction monomer and initiator: carry out by the method of embodiment one (1).

[0054] (2) Preparation of polymer: Weigh 0.39 g (1.15 mmol) of hydrophobic monomer octadecyl methacrylate (SMA); hydrophilic monomer 2-(dimethylamino) ethyl methacrylate (DMAEMA) 1.63g (10.3mmol); Initiator AIBN 0.19g (take by weighing 10% of total monomer molar weight), be dissolved in the dehydrated alcohol of 17mL (measure by solid content 13%), after stirring , pour it into a 250mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and nitrogen conduit, and pass through N 2 , stirring at a stirring speed of 350r / min, rapidly raising the temperature to 70°C, and maintaining this temperature and stirring speed, reacting for 6.5h, cooling and discharging.

[0055] (3) Purification of polymer: carry out by the method for embodiment one (3).

[0056] (4) Characterizatio...

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Abstract

A random copolymerized cationic macromolecular emulsifier and its production are disclosed. The emulsifier consists of hydrophobic monomer and hydrophilic monomer. The hydrophobic monomer is selected from methyl-propenoic acid lauryl ester or methyl-propenoic acid octadecyl ester; The hydrophilic monomer is selected from methyl-propenoic-2-(dimethy)carbethoxy, acryloyl-oxyethylated trimethyl-ammonia chloride or methyl-acryloy-oxyethylated trimethyl-ammonia chloride in proportion of 1:9-4:6mol. The process is carried out by selecting oil-soluble azo initiating agent or oil-soluble peroxide initiating agent by normal free-radical polymerization and reacting at 60-80degree. It is fast, simple and has high conversion rate. It can be used for paper additive, binder, anti-static agent, textile finishing auxiliary and sewage water treatment.

Description

technical field [0001] The invention relates to a copolymer, in particular to a copolymer made of methacrylic acid-2-(dimethylamino)ethyl ester, or cationic (meth)acryloyloxyethyltrimethylammonium chloride and methacrylic acid long A comb-shaped random copolymer composed of alkanyl esters can be used as a cationic macromolecular emulsifier. Background technique [0002] A macromolecular emulsifier is an amphiphilic polymer. Amphiphilic polymers are defined as: polymers with hydrophobic and hydrophilic segments or groups, the hydrophilic segments or groups may be ionic or non-ionic. For amphiphilic polymers, water is a good solvent for hydrophilic segments or groups, and a precipitant for hydrophobic segments. The hydrophobic parts self-assemble to reduce their exposure to water, forming micelles or bilayer structures; while the hydrophilic parts protrude toward the water. The advantage of amphiphilic polymers is that, as a high molecular weight com...

Claims

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Application Information

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IPC IPC(8): C08F220/16C08F4/04C08F4/32B01F17/52C09K23/52
Inventor 倪沛红毛江
Owner SUZHOU UNIV
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