Polystyrene resin of containing double bond, and preparation method

Abstract

This invention discloses a method for preparing polystyrene resin containing double bonds, which is prepared from linear or crosslinked polystyrene resin or polystyrene copolymer, and acyl halide reagent containing double bonds via Friedel-Crafts acylation reaction. The double bonds thus derived can react with double bonds of other functional monomers to introduce functional groups onto the resin, thus widening the application range of the resin. The double bond content of the polystyrene resin is up to 0-5.50 mmol / g dry resin.

Description

technical field [0001] The invention belongs to the field of functional polymers. Specifically relates to a polystyrene resin containing double bonds and a preparation method thereof. Background technique [0002] At present, polystyrene resins (PS) (linear, cross-linked and structured microspheres) have been paid attention to because they can endow the resin with new and wider uses after being functionalized. There are many ways to functionalize PS, such as: sulfonation, halogenation, nitration, metallation, alkylation, acylation and so on. After functional derivatization, PS with different functional groups can be obtained, such as: sulfonic acid group, halogen group, nitro group, alkyl group with different carbon chains, etc. [0003] The double bond group is also an important functional group. It can react with other double bonded monomers or with many reagents. However, the method of deriving double bond groups on PS is usually obtained by the residual (or called: h...

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Problems solved by technology

[0004] Generally, the degree of crosslinking of St-DVB copolymers is low, resulting in a low content of pendant double bonds in the copolymer, which is the main reason why people have not paid attention to the reaction of pendant double bonds for a long time.

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