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High-salt-tolerance super absorbent resin

A super absorbent resin and salt-resistant technology, applied in the resin field, can solve the problems of high synthetic industrial cost, non-natural degradation, poor salt resistance, etc., and achieve the effects of low price, improved water absorption, and improved salt resistance.

Inactive Publication Date: 2021-06-15
李方
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, superabsorbent resins generally have the problems of high synthetic industrial cost and poor salt tolerance, and traditional superabsorbent resins cannot be degraded naturally, resulting in environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A highly salt-tolerant superabsorbent resin, comprising the following raw materials: 5 parts of sodium alginate, 80 parts of acrylic acid, 50 parts of acrylamide, 20 parts of chitosan, 10 parts of diatomaceous earth, and 10 parts of humic acid , 0.05 parts of an initiator, 0.3 parts of a crosslinking agent, and 0.05 parts of an antioxidant.

[0033] The crosslinking agent is one or more of N, N-methylenebisacrylamide, polyethylene glycol diacrylate, glycerol, pentaerythritol, trimethylolmethane triacrylate, sodium citrate complex.

[0034] The initiator is benzoyl peroxide or azobisisobutyronitrile or dilauroyl peroxide or di-tert-butyl peroxide.

[0035] The antioxidant is any one of 2,6-di-tert-butyl-4-methylphenol, 4-hydroxydodecanoic acid anilide, antioxidant 1076, and antioxidant 264.

[0036] The above-mentioned high salt-tolerant superabsorbent resin is prepared by the following preparation process, including the following steps:

[0037] Step 1, dissolving ch...

Embodiment 2

[0042] A high salt-tolerant superabsorbent resin, comprising the following raw materials: 10 parts of sodium alginate, 100 parts of acrylic acid, 60 parts of acrylamide, 30 parts of chitosan, 20 parts of diatomaceous earth, and 15 parts of humic acid , 2.5 parts of initiator, 5 parts of crosslinking agent, 3 parts of antioxidant.

[0043] The crosslinking agent is one or more of N, N-methylenebisacrylamide, polyethylene glycol diacrylate, glycerol, pentaerythritol, trimethylolmethane triacrylate, sodium citrate complex.

[0044] The initiator is benzoyl peroxide or azobisisobutyronitrile or dilauroyl peroxide or di-tert-butyl peroxide.

[0045] The antioxidant is any one of 2,6-di-tert-butyl-4-methylphenol, 4-hydroxydodecanoic acid anilide, antioxidant 1076, and antioxidant 264.

[0046] The above-mentioned high salt-tolerant superabsorbent resin is prepared by the following preparation process, including the following steps:

[0047] Step 1, dissolving chitosan directly in...

Embodiment 3

[0055] A high salt-tolerant superabsorbent resin, comprising the following raw materials: 8 parts of sodium alginate, 90 parts of acrylic acid, 55 parts of acrylamide, 25 parts of chitosan, 15 parts of diatomaceous earth, and 20 parts of humic acid , 0.1 part of initiator, 0.6 part of crosslinking agent, 0.5 part of antioxidant.

[0056] The crosslinking agent is one or more of N, N-methylenebisacrylamide, polyethylene glycol diacrylate, glycerol, pentaerythritol, trimethylolmethane triacrylate, sodium citrate complex.

[0057] The initiator is benzoyl peroxide or azobisisobutyronitrile or dilauroyl peroxide or di-tert-butyl peroxide.

[0058] The antioxidant is any one of 2,6-di-tert-butyl-4-methylphenol, 4-hydroxydodecanoic acid anilide, antioxidant 1076, and antioxidant 264.

[0059] The above-mentioned high salt-tolerant superabsorbent resin is prepared by the following preparation process, including the following steps:

[0060] Step 1, dissolving chitosan directly in ...

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Abstract

The invention belongs to the technical field of resin, and particularly relates to high-salt-tolerance super absorbent resin which is prepared from the following raw materials in parts by mass: 5-10 parts of sodium alginate, 80-100 parts of acrylic acid, 50-60 parts of acrylamide, 20-30 parts of chitosan, 10-20 parts of diatomite, 10-20 parts of humic acid, 0.05-2.5 parts of an initiator, 0.3-5 parts of a cross-linking agent and 0.05-3 parts of an antioxidant. According to the preparation process disclosed by the invention, the chitosan is directly dissolved in the acrylic acid solution for reaction to neutralize the acrylic acid, so that the acrylic acid does not need to be neutralized before reaction, the process steps are reduced, and the production cost is reduced. The sodium alginate is used for improving the degradability of the resin, so that the effect of protecting the environment is achieved. The porous structure of the diatomite plays a bearing role in other raw materials, the water absorption rate of the resin is improved, the diatomite reacts with the sodium alginate, and the flocculation performance of the diatomite is improved.

Description

technical field [0001] The invention belongs to the technical field of resins, and in particular relates to a highly salt-resistant superabsorbent resin. Background technique [0002] Superabsorbent resin is a cross-linked network polymer containing a large number of strong polar groups. It was first prepared by Fanta et al. by grafting polyacrylonitrile with starch and then saponifying it. Since the 1960s, superabsorbent resins have been widely developed around the world. They can be divided into two categories according to raw materials. The first category is natural polymers, such as starch and cellulose; the second category is synthetic polymers, such as polymers. Acrylic acid, polyoxyethylene, and polyvinyl alcohol, among which more than 80% of super absorbent resins are polymerized from acrylic acid monomers. [0003] As a new type of functional polymer material, superabsorbent resin has been widely used in medicine and health, agriculture, forestry and horticulture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F289/00C08F283/06C08F220/06C08F220/56C08F222/38C08K7/26C08K5/13C08K5/134
CPCC08F251/00C08F289/00C08F283/065C08K7/26C08K5/13C08K5/1345C08F220/06C08F220/56C08F222/385
Inventor 李方
Owner 李方
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