Environmental-friendly styrene-acrylic emulsion for automotive air filtration paper

A technology of styrene-acrylic emulsion and air filter paper, which is applied in the direction of filter paper, paper, papermaking, etc., to achieve the effects of good water resistance, flexible film and good thermal stability

Inactive Publication Date: 2017-06-09
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report that N-isobutoxymethacrylamide is applied to styrene-acrylic emulsion for filter paper

Method used

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  • Environmental-friendly styrene-acrylic emulsion for automotive air filtration paper
  • Environmental-friendly styrene-acrylic emulsion for automotive air filtration paper
  • Environmental-friendly styrene-acrylic emulsion for automotive air filtration paper

Examples

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preparation example Construction

[0022] The invention provides a kind of preparation method of environment-friendly type styrene-acrylic emulsion, and the method comprises the following steps:

[0023] (1) Styrene, corresponding acrylic acid derivatives, environment-friendly self-crosslinking monomer, sodium dodecylbenzenesulfonate and emulsifier are dispersed in water to prepare a pre-emulsion;

[0024] (2) The above-obtained pre-emulsion and sodium persulfate aqueous solution were added dropwise to an aqueous solution containing surfactant, emulsifier, sodium persulfate and sodium bicarbonate, and reacted at a certain temperature for a period of time to obtain a blue emulsion.

[0025] The present invention has no special requirements on the amount of emulsifiers such as styrene, acrylic acid derivatives and sodium dodecylbenzenesulfonate in step (1), as long as a pre-emulsion with excellent performance can be prepared.

[0026] The acrylic acid derivative described in the step (1) of the present invention ...

Embodiment 1

[0045] Example 1: Used to illustrate the emulsion and its preparation method

[0046] 1. Pre-emulsification stage

[0047]Dissolve 1.2g of sodium lauryl sulfate and 1.2g of emulsifier OP-15 in 90ml of deionized water, stir rapidly for 5 minutes and slowly add 150.0g of styrene, 75.0g of methyl methacrylate, 75.0g of n-acrylic acid Butyl ester, 3.0 g of acrylic acid, 3.0 g of methacrylic acid, and 5.0 g of N-isobutoxymethacrylamide were all added and then stirred for 30 minutes to obtain a pre-emulsion.

[0048] 2. Main reaction stage

[0049] In a multi-necked flask with a capacity of 1000ml equipped with a stirrer, condenser, dropping funnel and thermometer, put 0.8g sodium lauryl sulfate, 0.8g emulsifier OP-15, 0.8g sodium persulfate and 1.5g carbonic acid Dissolve sodium hydrogen in 150ml of deionized water, stir and heat up to 80°C; add 8% pre-emulsion, control the temperature at 78-82°C, react for 1h until the emulsion turns blue; add the remaining pre-emulsion dropwise...

Embodiment 2

[0055] 1. Pre-emulsification stage

[0056] Dissolve 1.2g of sodium dodecylbenzenesulfonate and 1.5g of emulsifier OP-10 in 90ml of deionized water, stir rapidly for 5 minutes, then slowly add 180.0g of styrene, 75.0g of methyl acrylate, and 45.0g of propylene acrylate Esters, 6.0g of acrylic acid, 5.0g of N-isobutoxymethacrylamide were all added and then stirred for 30min to obtain a pre-emulsion.

[0057] 2. Main reaction stage

[0058] In a multi-necked flask with a capacity of 1000ml equipped with a stirrer, a condenser, a dropping funnel and a thermometer, put 1.0g sodium dodecylbenzenesulfonate, 0.8g emulsifier OP-10, 0.8g sodium persulfate and 1.5 Dissolve g sodium bicarbonate in 150ml of deionized water, stir and heat up to 80°C; add 10% pre-emulsion, control the temperature at 78-82°C, and react for 1h until the emulsion is blue; the rest of the pre-emulsion is at a constant speed for about 4h After the dropwise addition was completed, 1.6 g of sodium persulfate aqu...

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Abstract

The invention discloses a method for producing an environmental-friendly styrene-acrylic emulsion and application of the environmental-friendly styrene-acrylic emulsion in automotive air filtration paper. The environmental-friendly styrene-acrylic emulsion is one or more of compounds of formula (I) as shown in the specification, in the formula, R1 is -CH3 or H; R2 is one or more of hydroxyl or methoxy, n-butoxy, propoxy and other aliphatic oxygen groups; n is an integer of 5000-10000; m is an integer of 5000-10000; and o is an integer of 50-200. Various properties of the polymer are adjusted by changing a ratio of styrene to (methyl) acrylate (esters) and the types of the (methyl) acrylate (esters). Properties of the polymer, such as strength, flexibility and water resistance, are improved by introducing an environmental-friendly cross-linking monomer isobutyl methacrylate (IBMA for short). Compared with harmful formaldehyde gas released by cross-linked film forming of a common cross-linking monomer N-hydroxymethyl acrylamide, isobutanol is released from cross-linked film forming of the IBMA and is harmless to the environment.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly styrene-acrylic emulsion for automobile air filter paper. Background technique [0002] Automobile filter is a very important part of automobile engine, which can effectively remove the impurities entering the engine air, fuel and engine oil, protect the engine from wear and tear, and prolong the service life of the engine. Engine filter paper is a commonly used filter material. Compared with other filter materials, it has the advantages of low cost, good filtration efficiency, small size, light weight, and easy cleaning. Styrene-acrylic emulsion is widely used in the production of automobile air filter paper due to its good fiber bonding performance, excellent film-forming performance and low cost. The self-crosslinking monomer N-methylolacrylamide, which is currently widely used in the synthesis of styrene-acrylic emulsion, releases formaldehyde, an irritating gas, during the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/14C08F220/18C08F220/06C08F220/54C08F2/26C08F2/30D21H27/08D21H17/40
CPCD21H17/40D21H27/08C08F212/08C08F220/14C08F220/1803C08F220/06C08F220/54C08F220/1804C08F220/1802C08F220/1808
Inventor 万莹刘文陈雪峰
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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