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Polymer, preparation method thereof and use method thereof

A polymer and sediment technology, applied in chemical instruments and methods, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc.

Inactive Publication Date: 2012-11-14
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing metal scavengers have various limitations respectively

Method used

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  • Polymer, preparation method thereof and use method thereof
  • Polymer, preparation method thereof and use method thereof
  • Polymer, preparation method thereof and use method thereof

Examples

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preparation example Construction

[0022] The preparation method of the polymer involved in the present invention may include: providing the inclusion formula A polymer of the IV structural unit, reacting the polymer comprising the structural unit of formula IV with ammonia, primary amine, secondary amine or tertiary amine to obtain a reactive polymer, and reacting the reactive polymer with carbon disulfide, hydrosulfide or sulfide to obtain form inclusive A polymer of I structural units, where R 1 selected from -SH, secondary, tertiary and quaternary amino groups, R 2 selected from hydrogen ion, NH 4 + , alkali metal ions and alkaline earth metal ions, R 3 Selected from Hydrogen and SSC-R 2 , X is a halogen.

[0023] In some embodiments, the hydrosulfide salt is sodium hydrosulfide. In some embodiments, X is chlorine. In some embodiments, the polymer comprising structural units of formula IV is obtained by polymerizing epichlorohydrin.

[0024] In another aspect, the present invention relates to a...

example 1

[0035]

[0036] Epichlorohydrin (50 grams) was slowly added to stirring 1 gram of concentrated phosphoric acid and 1 gram of deionized water between 90°C and 95°C. Then 1 gram of concentrated phosphoric acid and 50 grams of epichlorohydrin were added over a further 30 minutes. The product of this reaction is polyepichlorohydrin ( 1 H NMR (CDCl 3 ): 3.2~3.4(1H), 3.6~4.1(4H), 1.2(2H)), which were directly used in Example 2 without any purification or isolation.

example 2

[0038]

[0039] The polyepichlorohydrin (5 grams) that obtains in example 1 is slowly added the ammonia solution (concentration is 28%) of 10 grams, obtains-NH after this mixture is stirred gently 90 minutes 2 polymers as side groups, 1 H NMR (CDCl 3 ): 2.8~3.1(3H), 3.4~3.6(2H), 1.2(2H).

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Abstract

The invention relates to a polymer containing a structural unit represented by formula I in the specification, a preparation method thereof and a use method thereof. In the formula I, R<1> is selected from -SH, a secondary amino group, a tertiary amino group and a quaternary amino group; R<2> is selected from a hydrogen ion, NH4<+>, an alkali metal ion and an alkaline-earth metal ion; and R<3> is selected from H and SSC-R2.

Description

technical field [0001] The present invention relates to a polymer and methods of making and using the polymer, eg, methods of using the polymer to remove heavy metals from water. Background technique [0002] Heavy metal pollution is a real and growing global problem. For example, wastewater effluents from wastewater treatment facilities, chlor-alkali plants, metal finishing plants, and certain municipal landfills often cause heavy metal contamination problems. Likewise, the presence of heavy metal levels in water from operating and / or abandoned mines is a significant environmental concern in the area where the mine is located. [0003] Different treatment technologies have been developed to remove dissolved and / or suspended heavy metals from industrial water or wastewater. A common practice is to precipitate most of the heavy metal pollutants in their hydroxide form. Copper, lead, etc. are easily precipitated in this way, but the minimum concentration of heavy metals obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/326C08G65/325C08G65/24C08G65/338C08G65/333C08G65/28C02F1/56C02F1/62
Inventor 刘升霞梁延刚董红晨彭文庆吕苏张冰
Owner GENERAL ELECTRIC CO
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