Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method for super water-absorbent resin

A technology of superabsorbent resin and methyl cellulose, which is applied in the field of polymers, can solve the problems of low water absorption capacity of superabsorbent resin, and achieve the effects of improved water absorption performance, simple preparation method, and easy control of the production process

Inactive Publication Date: 2015-07-22
广西藤县通轩立信化学有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of superabsorbent resin, which can solve the problem of low water absorption capacity of superabsorbent resin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The superabsorbent resin in this embodiment uses 25 parts of acrylic acid as a monomer, 15 parts of methyl cellulose as a substrate, 0.3 parts of benzoyl peroxide as an initiator, and 0.3 parts of trimethylolpropane as a crosslinking agent. Use 30 parts of liquid paraffin as the dispersant and 50 parts of cyclohexane as the oil phase.

[0015] The specific steps are: add 15 parts of methylcellulose, 25 parts of acrylic acid, 0.3 parts of benzoyl peroxide, 0.3 parts of trimethylolpropane and 30 parts of liquid paraffin into the reaction kettle, mix well, and after 20 minutes, transfer to the reaction kettle. Add 50 parts of cyclohexane into the kettle, stir evenly, pass in high-purity nitrogen, control the reaction temperature at 50°C, and polymerize for 2 hours, dry and pulverize to obtain a water-absorbent resin.

[0016] The amount of tap water absorbed by the superabsorbent resin in this embodiment is above 1115 ml / g, and the amount of absorbed physiological saline i...

Embodiment 2

[0018] The superabsorbent resin in this example uses 40 parts of acrylic acid as a monomer, 30 parts of methyl cellulose as a substrate, 2 parts of lauroyl peroxide as an initiator, and 3 parts of trimethylolpropane as a crosslinking agent. 45 parts of liquid paraffin is used as dispersant, and 75 parts of cyclohexane is used as oil phase.

[0019] The specific steps are: add 30 parts of methylcellulose, 40 parts of acrylic acid, 2 parts of lauroyl peroxide, 3 parts of trimethylolpropane and 45 parts of liquid paraffin into the reaction kettle, mix well, and after 25 minutes, pour into the reaction kettle Add 75 parts of cyclohexane, stir evenly, pass high-purity nitrogen, control the reaction temperature at 55°C, and polymerize for 1.5 hours, dry and pulverize to obtain a water-absorbent resin.

[0020] The amount of tap water absorbed by the superabsorbent resin in this embodiment is above 1203 ml / g, and the amount of absorbed physiological saline is 142 ml / g.

Embodiment 3

[0022] The superabsorbent resin in this example uses 50 parts of acrylic acid as a monomer, 50 parts of methyl cellulose as a substrate, 4 parts of lauroyl peroxide as an initiator, and 5 parts of trimethylolpropane as a crosslinking agent. 60 parts of liquid paraffin is used as dispersant, and 100 parts of cyclohexane is used as oil phase.

[0023] The specific steps are: add 50 parts of methylcellulose, 50 parts of acrylic acid, 4 parts of lauroyl peroxide, 5 parts of trimethylolpropane and 60 parts of liquid paraffin into the reactor, mix well, and after 20 minutes, pour Add 100 parts of cyclohexane, stir evenly, pass high-purity nitrogen, control the reaction temperature at 45°C, and polymerize for 3 hours, dry and pulverize to obtain a water-absorbent resin.

[0024] The amount of tap water absorbed by the superabsorbent resin in this embodiment is above 1200 ml / g, and the amount of absorbed physiological saline is 140 ml / g.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method for super water-absorbent resin. According to the preparation method, 25-50 parts of acrylic acid is taken as a monomer, 15-50 parts of methylcellulose is taken as a base material, 0.3-4 parts of acyl peroxide is taken as an initiator, 0.3-5 parts of trimethylolpropane is taken as a cross-linking agent, 30-60 parts of liquid paraffin is taken as a dispersant, and 50-100 parts of cyclohexane is taken as an oil phase. The preparation method comprises the following steps: adding the raw materials into a reaction kettle, mixing uniformly, adding 50-100 parts of cyclohexane in 20-30 minutes, stirring uniformly, introducing high-purity nitrogen, controlling the reaction temperature, producing a polymerization reaction, drying, and grinding to obtain the water-absorbent resin. The preparation method is simple; a production process is easy to control; the water absorption performance of the prepared super water-absorbent resin is remarkably improved, that is to say, the super water-absorbent resin can absorb more than 1,100ml / g of tap water and more than 135 ml / g of normal saline.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a preparation method of superabsorbent resin. Background technique [0002] Superabsorbent resin is a functional polymer material with a large number of hydrophilic groups. With its high liquid absorption capacity, high liquid absorption speed and high liquid retention capacity, it is widely used in sanitary products, such as women's sanitary napkins, diapers, adult multi-functional nursing pads, absorbent paper, pet pads, etc. This kind of product is greatly reduced in weight, miniaturization and comfort, which brings good news to people, and is an irreplaceable ideal product in the field of hygiene products. Super absorbent resin is non-toxic, non-irritating to the human body, has no side effects, and does not cause blood coagulation. In recent years, it has been widely used in the field of medicine. For example, it is used for external ointment with high water content and c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/02C08F220/06
Inventor 关炽昌刘涛
Owner 广西藤县通轩立信化学有限公司