Nitrogen-nitrogen-oxygen nickel complex catalytic system for addition polymerisation of norbornene and its derivant, preparation method and uses thereof

Abstract

The invention discloses a catalyst system of nitrogen-nitrogen-oxygen nickel composition for the addition polymerization of norbornene and norbornene derivatives, a preparation method and an application thereof. The catalyst system consists of a main catalyst and an auxiliary catalyst. The main catalyst is (N-2-substituted pyridyl-N-2-substituted phenoxy-p-alkylaniline) nickel halide (II). The auxiliary catalyst is chlorinated aluminium diethyl or methylaluminoxane. The mole ratio of the main catalyst to the auxiliary catalyst is 1:50 to 5000. The structural formula of the main catalyst is shown as the above. The main advantage of the catalyst system is that the obtained addition polymer of the norbornene and the norbornene derivatives has good solubility, which can dissolve in low boiling point solvents, such as cyclohexane, trichloromethane and the like in order to lay the good foundation for realizing solution processing. The invention has the advantages that the technique is simple, the source material is easy to find, the cost is low, the catalytic activity is high, the highest of which is 10<8>gPN / (molNi.h.atm) and the molecular weight of norbornene is between 10<4> and 3*10<5>.

Description

technical field The present invention relates to a catalytic system for the polymerization of norbornene and its derivatives, a preparation method and application thereof, in particular to a method for preparing norbornene and its derivatives with good solubility in low-boiling point solvents. Synthetic polymerization catalyst system, preparation method and application. Background technique The invention relates to a preparation method and application of a norbornene polymerization catalyst system. Bicyclo【2.2.1】hex-2-ene is commonly known as norbornene. Norbornene and its derivatives can be polymerized in three ways as shown in the figure. Polymers with different structures and properties can be obtained by different polymerization methods. The first type of polymerization, called ring-opening metathesis polymerization (ROMP), is the most studied Bornene polymerization method, the industrial polynorbornene Norsorex process is the application of ROMP in actual producti...

AI Technical Summary

Problems solved by technology

Although norbornene addition polymers (especially homopolymers) have excellent properties, one of the main problems that researchers often encounter during the research and development of norbornene addition polymer products is that norbornene The solubility of olefin addition homopolymer is very poor, generally only soluble in chlorobenzene and other solvents with a higher boiling point, it is difficult to realize solution processing. In addition, although norbornene addition homopolymer has a high decomposition temperature, However, its glass transition temperature is very close to the decomposition temperature, and it is often decomposed before processing, so it is difficult to melt process

Images