Isoprene rubber grafted maleic anhydride and preparation method thereof
A technology for grafting maleic anhydride and isoprene rubber, applied in the field of synthetic rubber, can solve the problems of increasing the industrialization process, reducing the industrialization process, increasing the difficulty of industrialization, etc., and achieves the effect of reducing the difficulty, reducing the process and small investment
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[0059] The preparation method of the isoprene rubber grafted maleic anhydride of the present invention only needs to mix the components in the solution according to the formula to obtain the isoprene rubber grafted maleic anhydride, and give the isoprene rubber maleic anhydride better graft At the same time, the product has low odor, white color, environmental protection and safety, simple preparation method, simple process, easy-to-control conditions, low cost, low equipment requirements, and is suitable for industrial production.
[0060] The above-mentioned isoprene rubber is an isoprene rubber with a Mooney viscosity of 70-80 prepared by a rare earth catalyst independently developed by Jilin Chemical Research Institute as the grafting matrix. The isoprene rubber with a preferred Mooney viscosity is used as the grafting matrix, which can effectively make the Maleic anhydride grafted with rubber.
[0061] The above-mentioned initiator is preferably benzoyl peroxide (BPO), which c...
Example Embodiment
[0063] Example 1:
[0064] Add 5g of isoprene rubber and 100ml of toluene into a three-necked flask equipped with a thermometer, stirring paddle and thermometer, stir and heat to 70°C to fully dissolve the isoprene rubber in toluene, add 0.3g of maleic anhydride monomer, Stir at a medium speed, then add 0.2 g of initiator BPO, and continue to stir and react for 5 hours. After the reaction is over, the product is precipitated with acetone, then filtered with a Buchner funnel and dried. The dried product was extracted in acetone with a Soxhlet extractor for 3 hours to remove unreacted monomers and initiators. After purification, the product was vacuum dried at 60°C to a constant weight for later use to obtain the isoprene rubber adhesive Branch maleic anhydride product.
Example Embodiment
[0065] Example 2:
[0066] Add 5g of isoprene rubber and 100ml of toluene into a three-necked flask equipped with a thermometer, stirring paddle and thermometer, stir and heat to 70°C to fully dissolve the isoprene rubber in toluene, add 0.5g of maleic anhydride monomer, Stir at a medium speed, then add 0.2 g of initiator BPO, and continue to stir and react for 5 hours. After the reaction is over, the product is precipitated with acetone, then filtered with a Buchner funnel and dried. The dried product was extracted in acetone with a Soxhlet extractor for 3 hours to remove unreacted monomers and initiators. After purification, the product was vacuum dried at 60°C to a constant weight for later use to obtain the isoprene rubber adhesive Branch maleic anhydride product.
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