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Flocculation treatment agent

一种处理剂、乳剂的技术，应用在凝集处理剂领域，达到稳定性高、提高聚合度的效果

Active Publication Date: 2015-03-25
HYMO CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In such prior art, there is no method for producing a stable water-in-oil emulsion of polyvinylamine obtained by hydrolyzing a water-in-oil emulsion of an N-vinylcarboxamide polymer with an acid or an alkali.

Method used

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Examples

Experimental program
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Embodiment ）

[0069] (Examples) Hereinafter, although an Example demonstrates this invention in detail, this invention is not restricted by the following Example in the range which does not exceed the summary.

[0070] (Manufacture of N-vinylcarboxamide polymer water-in-oil emulsion 1)

[0071]In a four-necked 500mL separable flask equipped with a stirrer, a reflux condenser, a thermometer, and a nitrogen gas introduction tube, 185.6 g of isoparaffins with a boiling point of 190° C. to 230° C. were charged with a nonionic active agent HypermerH1084 (Croda Japan KK. system) 13.0g and dissolve it. Separately, 166.4 g of N-vinylformamide (purity: 99.8% by mass), 0.16 g of sodium formate, and 134.9 g of ion-exchanged water were collected and added. The oil and the aqueous solution were mixed and emulsified with a homomixer at 8000 rpm for 2 minutes. The obtained emulsion was stirred and the temperature of the monomer solution was kept in the range of 20~25°C. After nitrogen replacement for 30...

Embodiment 1

[0075] Take 252.6 g of PNVF-1 and 12.6 g of polyoxyethylene stearyl ether (EMULGEN 306P (HLB9.4) manufactured by Kao Corporation) into a four-necked 500 mL separable flask equipped with a stirrer, a reflux condenser, a thermometer, and a dropping funnel ), stirred at 50°C to fully dissolve and mix. After confirming the dissolution, the temperature was raised to 80°C, 12.6 g of a 20% by mass aqueous solution of hydroxylamine hydrochloride was added, and 98.7 g of an aqueous sodium hydroxide solution (purity: 48% by mass) was added dropwise over 1 minute using a dropping funnel, and 80°C was carried out at 80°C. hours of hydrolysis. After the completion of the hydrolysis reaction, 123.5 g of hydrochloric acid aqueous solution (purity: 35% by mass) was added and neutralized using the dropping funnel. After neutralization, 20 g of polyoxyethylene alkyl ether (HLB13.3) was added to obtain a water-in-oil emulsion of polyvinylamine. This is referred to as sample-1, and the pH at a ...

Embodiment 2

[0077] A water-in-oil emulsion of polyvinylamine was obtained in the same manner as in Example 1, except that neutralization was not performed with an aqueous hydrochloric acid solution. This is referred to as Sample-2, and the intrinsic viscosity at 25°C in an aqueous NaCl solution with a concentration of 1 mol / L, the pH at a concentration of 1% by mass, and the properties immediately after manufacture and 30 days after manufacture (storage at 25°C) are shown. In Table-1.

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Abstract

Provided is a water-in-oil type emulsion that has a high storage stability and exhibits an excellent performance as a flocculation treatment agent, wherein a vinylamine polymer capable of expressing specific effects as a papermaking agent or a flocculation agent is formulated into the water-in-oil type emulsion having a number of practical advantages. The flocculation treatment agent according to the present invention comprises a water-in-oil type emulsion of a water soluble polymer, said water-in-oil type emulsion being prepared by hydrolyzing, in the presence of an acid or a base, a water-in-oil type emulsion of an aqueous solution of an N-vinylcarboxylic amide polymer in which a polyoxyalkylene alkyl ether coexists. It is preferred that the polyoxyalkylene alkyl ether is added before the hydrolysis reaction.

Description

technical field [0001] The present invention relates to a coagulation treatment agent, in particular, to a coagulation treatment agent comprising a water-in-oil emulsion of a water-soluble polymer in which a polyoxyalkylene alkyl A water-in-oil emulsion of an aqueous N-vinylcarboxamide polymer solution in which ether coexists is produced by hydrolyzing it in the presence of an acid or alkali. Background technique [0002] As an additive for papermaking, dialkylaminoalkylene (meth)acrylate quaternary ammonium compounds are currently used in most retention aids (retention agents), filter aids for cardboard (drainage agents) ), paper strength enhancer, coagulant for pretreatment of paper raw materials, etc. Affordable and easy to manufacture are considered the reasons for its popularity. However, it is known that polyvinylamine exhibits an excellent effect as an impurity regulator such as resin used to prevent impurity failure of resin or the like caused by impurities such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/01C02F1/56C02F11/14C08F8/12C08L39/02C08L71/02D21H21/10D21H21/18
CPCC08F8/12C08L71/02D21H21/18D21C5/027D21H17/34D21H17/37D21H17/74D21H21/20C08F126/02C08F2/32C08L33/26C02F1/56Y02W30/64C02F11/147B01D21/01C02F11/14C08L39/02C02F2101/308C02F2305/04D21H21/10D21H21/16
Inventor 三井翔平武尾一与若月将吾米仓温
Owner HYMO CORPORATION
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