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High oil absorption resin with semi-interpenetrating polymer network structure and its preparation method

A super oil-absorbing resin and network structure technology, applied in the field of super oil-absorbing resin containing semi-interpenetrating network structure and its preparation field, can solve the problem of poor oil absorption reversibility, reduce the effective oil absorption volume, oil absorption rate and oil absorption and discharge reversibility of the resin network structure It can improve the rigidity, good recycling performance and good reversible performance of oil absorption.

Active Publication Date: 2013-08-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the developed super oil-absorbing resins generally include three types: acrylate super oil-absorbing resins, olefin super oil-absorbing resins, and natural or prepared polymer modified super oil-absorbing resins. The affinity performance is superior, but there are few sources of high-carbon olefins, and the price is too expensive. Although the raw material sources of natural or modified super oil-absorbing resins are relatively wide and the price is relatively cheap, the strength of the resin after oil absorption is too low, and the reversibility of oil absorption is poor. , is not conducive to recycling, so acrylic substances are often used to prepare high oil-absorbing resins
[0004] However, the acrylic super oil-absorbing resins prepared at home and abroad are single chemical cross-linking, and the side chains generally have long-chain alkyl groups. The absorption capacity of oil products, but the chemical crosslinking in the preparation process makes the molecular chains strongly bound, which affects the expansion of the three-dimensional network of the resin, making the oil absorption ratio of the resin not high, and the reversibility of oil absorption and discharge is poor, while the side group is a long chain The alkyl group increases the steric hindrance of the oil-absorbing resin and reduces the effective oil-absorbing volume of the resin network structure
In 1966, Dow Chemical Company of the United States first successfully developed a non-polar super oil-absorbing resin; Japan has also carried out research since the 1970s, such as Japanese patents Ping 05-15777, Ping 05-32708 and Ping 05-209017, etc. Acrylic acid long carbon chain alkyl ester high oil-absorbing resin, Chinese patent (publication number: CN1869090) discloses a kind of high oil-absorbing resin, with rubber and alkylstyrene as monomer, with divinylbenzene, ethylene glycol diacrylate The substance is a cross-linking agent, and a high oil-absorbing resin containing a partially semi-interpenetrating network was prepared by suspension polymerization, but the oil absorption rate and reversibility of oil absorption and release are not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In a 250ml three-neck flask equipped with a stirrer, condenser, and thermometer, add 300 parts of deionized water (by weight, the same hereinafter), 0.5 parts of polyvinyl alcohol, heat up to 70°C in an oil bath, and keep the temperature constant for 30 minutes , after the dispersant is dissolved, add 60 parts of stearyl methacrylate, 40 parts of butyl acrylate (3.3 parts of butyl rubber dissolved in butyl acrylate), 0.5 parts of benzoyl peroxide, 0.6 parts of divinylbenzene, benzene 10 parts of ethylene, 5 parts of methyl ethyl ketone, 5 parts of ethyl acetate, heat up to 75°C, stir rapidly for 40 minutes, then raise the temperature to 80°C, reduce the speed to about 400-420 rpm, react for about 5 hours, and finally raise the temperature Stop the reaction after aging at 90°C for 1 hour, wash the product with hot water for several times, then distill the residual monomer and porogen by steam distillation, and then filter and dry to obtain the super oil-absorbing resin. T...

Embodiment 2

[0054] Add 333 parts of deionized water and 0.53 parts of polyvinyl alcohol to a 250ml three-necked flask equipped with a stirrer, condenser, and thermometer, raise the temperature to 70°C in an oil bath, and keep the temperature constant for 30 minutes. After the dispersant dissolves, add methyl 53.3 parts of cetyl acrylate, 46.7 parts of butyl methacrylate (5 parts of butyl rubber dissolved in butyl methacrylate), 13.3 parts of styrene, 5 parts of butanone, 5 parts of ethyl acetate, 0.57 parts of divinylbenzene Parts, azobisisobutyronitrile 0.5, stir rapidly for 30 minutes, then raise the temperature to 80°C, reduce the speed to about 400-420 rpm, react for about 5 hours, and finally raise the temperature to 90°C and mature for 1 hour to stop the reaction. Wash the product with hot water for several times, then distill the residual monomer and porogen by steam distillation, filter and dry with suction to obtain the high oil-absorbing resin, the particle size of the resin is m...

Embodiment 3

[0062] Add 300 parts of deionized water and 1 part of gelatin to a 250ml three-neck flask equipped with a stirrer, condenser, and thermometer, heat up to 70°C in an oil bath, and keep the temperature constant for 30 minutes. After the dispersant dissolves, add 10 parts of methacrylic acid 53.3 parts of tetraester, 46.7 parts of ethyl methacrylate, 6.7 parts of styrene, 9.3 parts of ethyl acetate, 3 parts of chloroform, 1 part of isoamyl alcohol, 3.3 parts of ethylene-propylene rubber (first dissolved in ethyl methacrylate Middle), 0.6 parts of N-N-methylenebisacrylamide, 0.5 parts of azobisisobutyronitrile, heat up to 75°C, stir rapidly for 60 minutes, then heat up to 85°C, reduce the speed to about 400-420 rpm , reacted for about 6 hours, and finally raised the temperature to 90°C for 1 hour to stop the reaction, washed the product with hot water for several times, then steamed to remove residual monomers and porogens, and then filtered and dried to obtain high oil absorption ...

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Abstract

The invention discloses high oil absorption resin with a semi-interpenetrating polymer network structure and its preparation method. The high oil absorption resin comprises the following ingredients: 100 parts of oil absorption monomer, 2-20 parts of styrene, 0.1-1 part of cross-linking agent, 0.3-3 parts of dispersant, 0.1-1 part of initiator, 5-30 parts of pore forming agent and 2-20 parts of semi-interpenetrating polymer network structure agent. The preparation method comprises the following steps: a, dissolving the dispersant in deionized water; b, dissolving the semi-interpenetrating polymer network structure agent in the short chain acrylic acid ester monomer, mixing with long chain alkyl ester monomer, the initiator, the cross-linking agent, styrene and the pore forming agent in the dispersant of the step a; c, heating the mixture, stirring , reacting, slaking to stop the reaction; d, washing, pump filtering, drying to obtain the product. The high oil absorption resin has the advantages of high oil absorption multiplying power, fast oil absorption rate and good oil absorption reversibility.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a high oil-absorbing resin with a semi-interpenetrating network structure and a preparation method thereof. Background technique [0002] High oil-absorbing resin is a body-shaped polymer resin with a low three-dimensional network chemical crosslinking structure, which can absorb various oil products and can be used for environmental protection and other aspects. It is a new type of functional polymer material that has developed rapidly in recent years. Super oil-absorbing resin achieves the purpose of oil absorption through the van der Waals force generated between lipophilic groups and oil molecules. The interaction force between them is the key to improve the oil absorption performance of the resin. [0003] At present, the developed super oil-absorbing resins generally include three types: acrylate super oil-absorbing resins, olefin super oil-absorbing resins, and natur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/10C08L23/22C08L23/16C08L33/00C08L7/00C08F220/18C08F212/36C08F212/08C08F222/14C08F222/38C08J9/00B01J20/26B01J20/30
Inventor 马兰荣周爱军杨德锴姜向东江学良
Owner CHINA PETROLEUM & CHEM CORP
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