3results about How to "The polymerization method is simple" patented technology

The present disclosure relates to polyquinoxalines containing basic groups, which are obtained by copolymerization of a dioxinone monomer and a tetramine monomer. The present disclosure also relates to proton exchange membranes formed from the polyquinoxalines containing basic groups. The polyquinoxalines containing basic groups provided by the present disclosure have excellent mechanical strength, thermal stability, chemical stability and phosphoric acid doping rate, while having site-controllable basic groups, and have broad application prospects.

The present invention belongs to the field of functional materials, and discloses a fluorescent polymer with acid-base stimulus responsiveness, and a preparation method and application thereof. The preparation method comprises the following steps: the first step is to polymerize a dibasic acetylene aldehyde compound and a dibasic thiol compound in an organic solvent under an inert or air atmosphere, and after the reaction is completed, the product is dissolved in an organic solvent, added to n-hexane for precipitation, and a β-aldehyde polysulfide is obtained; the second step is to react the β-aldehyde polysulfide with a hydrazine or acylhydrazine compound in an organic solvent under an air atmosphere to obtain a fluorescent polysulfide solution with acid-base stimulus responsiveness. The fluorescent polysulfide with acid-base stimulus responsiveness prepared by the polymerization method of the present invention utilizes its excellent properties such as rapid acid-base response, obvious fluorescence change, and good reversibility to realize its high-tech applications in patterning and multicolor display, copy materials, food detection, information encryption and storage, etc.

The invention relates to the technical field of polyolefin elastomers, and discloses a high cis-polybutadiene elastomer as well as a preparation method and application thereof. The molar content of a cis structure of the polybutadiene elastomer is not less than 95%, and the weight-average molecular weight of the polybutadiene elastomer is not less than 100 kg / mol, or the viscosity-average molecular weight of the polybutadiene elastomer is not less than 100 kg / mol; the raw rubber strength of the polybutadiene elastomer is not less than 130 kPa, and after the polybutadiene elastomer is placed at room temperature for 960 hours, the height retention rate of the raw rubber is not less than 75%. According to the invention, butadiene polymerization is carried out under the action of the catalyst and the silicon-containing compound, so that the polybutadiene elastomer with high raw rubber strength and excellent cold flow resistance can be obtained.