A kind of preparation method of super absorbent resin for sanitary napkin

A high-absorbency, sanitary napkin technology, applied in the field of fine chemicals, can solve the problems of hindering blood diffusion and absorption, poor blood absorption effect of resin, etc., and achieve the effects of improving affinity, improving curing rate, and improving roughness.

Active Publication Date: 2022-07-26
浙江卫星新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, in the process of blood absorption by the resin in the prior art, after the two are in contact, the solid components in the blood cannot enter the interior of the superabsorbent resin, and are likely to cover the surface of the resin particles, hindering the subsequent diffusion of blood to the interface and Absorption, resulting in poor absorption of resin for blood

Method used

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  • A kind of preparation method of super absorbent resin for sanitary napkin
  • A kind of preparation method of super absorbent resin for sanitary napkin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Add 100.00 parts of refined acrylic acid and 125.00 parts of water to the reactor, then add 86.8 parts of 48% concentration NaOH for neutralization, then add 1.025 parts of crosslinking agent polyethylene glycol 400 diacrylate, foam stabilizer carboxymethyl cellulose 1.25 parts of sodium, 0.2 part of sodium oxalate, an anticoagulant, compressed air was introduced from the bottom of the reactor, the inner diameter of the ventilation outlet was 5 mm, and the flow rate was 2.0 L / min. After 10 minutes, the reaction solution was cooled and heated to 80 ° C. Add initiator: 50wt% 0.8 part of sodium persulfate. After the polymerization reaction was completed, crushing and granulation were carried out, and 15 parts of SAP fine powder was added during granulation. After granulation, it is dried, and the dried material is crushed and sieved to control the particle size of 45-300 μm, and the mass ratio is 80%. After that, the surface treatment is carried out. The surface treatment...

Embodiment 2

[0058] Add 100.00 parts of refined acrylic acid and 103.00 parts of water to the reactor, then add 90.0 parts of 48% concentration NaOH for neutralization, and then add 0.815 parts of crosslinking agent polyethylene glycol 400 diacrylate, polyethylene glycol 1000 diacrylate 0.320 part, foam stabilizer SAP fine powder 0.5 part, anticoagulant disodium EDTA 0.32 part, nitrogen was introduced from the bottom of the reactor, the inner diameter of the vent was 2mm, and the flow rate was 2.0L / min. The temperature was lowered to 80° C., and an initiator: 0.4 part of 50 wt % sodium persulfate was added. After the polymerization reaction was completed, crushing and granulation were carried out, and 20 parts of SAP fine powder were added during granulation. After granulation and drying, the dried material is crushed and sieved to control the particle size of 45-300μm, and the mass ratio is 83%. After that, the surface treatment is carried out. The surface treatment liquid is prepared fr...

Embodiment 3

[0060] Add 100.00 parts, 90.00 parts of refined acrylic acid to the reactor, then add 86.8 parts of 48% concentration NaOH for neutralization, then add 1.025 parts of crosslinking agent polyethylene glycol 400 diacrylate, 1.1 parts of foam stabilizer SAP fine powder, 0.31 part of sodium oxalate, an anticoagulant, was introduced into compressed air from the bottom of the reactor, the inner diameter of the vent was 2 mm, and the flow rate was 2.0 L / min. After 10 minutes, the reaction solution was cooled and heated to 80 °C, and the initiator was added: 50wt% sodium persulfate 0.4 share. After the polymerization reaction was completed, crushing and granulation were carried out, and 15 parts of SAP fine powder was added during granulation. After granulation, it is dried, and the dried material is crushed and sieved to control the particle size of 45-300μm, and the mass ratio is 90%. After that, surface treatment is carried out. The surface treatment liquid is prepared by ethylene...

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Abstract

The invention discloses a preparation method of a high-absorbent resin for sanitary napkins, belonging to the technical field of fine chemicals. The method comprises the following steps: (1) acrylic acid is neutralized to a certain extent, mixed with a crosslinking agent, an initiator and a foam stabilizer. Anticoagulants and blood anticoagulants are polymerized to form colloids under aeration conditions; (2) fine powder is added during granulation of polymeric colloids, and then the particle size distribution is controlled by drying, pulverization and sieving; (3) semi-finished products are added during surface treatment Blood anticoagulant, blood affinity agent and other auxiliary agents are used to obtain finished SAP. The superabsorbent resin prepared by the preparation method of the superabsorbent resin for sanitary napkins has the characteristics of good blood absorption performance and fast absorption speed.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a preparation method of a superabsorbent resin for sanitary napkins. Background technique [0002] Super Absorbent Resin (SAP) has a strong ability to absorb and retain water, and it can absorb hundreds or even thousands of times its own mass of water, so it is widely used in the field of sanitary products such as diapers and sanitary napkins. [0003] The research on the absorption performance of super absorbent resin for pure water and salt water is relatively common. For example, patents CN105061961A and CN104356281A both introduce a preparation method of salt-tolerant superabsorbent resin; Process for the preparation of an absorbent superabsorbent resin. Blood has peculiarities compared to these fluids. Blood components include solids such as plasma, red blood cells, white blood cells, and platelets, which are viscous. When the superabsorbent resin takes blood as th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/00C08J3/12C08F220/06C08F222/20C08F2/44
CPCC08J7/00C08J3/12C08F220/06C08F2/44C08J2333/02C08J2400/00C08F222/1063
Inventor 杨卫东刘新卢卫伟吕志平阮玉林刘健朱雅亮
Owner 浙江卫星新材料科技有限公司
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