2results about How to "Destructive activity" patented technology

The present application relates to the field of polymer manufacturing, and particularly relates to a long-chain branched modification method of rare earth isoprene rubber and / or butadiene rubber, comprising the following steps: S1. performing solution polymerization of isoprene and / or butadiene and isoprene in a non-polar solvent in the presence of a rare earth catalyst to obtain a glue solution containing active polymer molecular chains; S2. when the conversion rate of the polymerization reaction reaches 95% or more, adding a compound branched modifier to the glue solution to perform a branched reaction; wherein the compound branched modifier comprises at least one of a chloride and an alkyl halide and at least one selected from ether compounds and tertiary amine compounds. The branched modifier used in the present application has a strong branching effect, and has good solubility so as to achieve uniform mixing at a molecular level in the glue solution, significantly alleviates the gel side reaction, reduces the gel content, narrows the molecular weight distribution, significantly improves the raw rubber performance, and improves the product uniformity.

The utility model discloses a directional liquid medicine guide device includes controller and medicine liquid guide component, and the controller includes box body, sets up the main control circuit board in the box body inside and two current output interfaces of electric connection in the main control circuit board, and medicine liquid guide component includes main electrode part and auxiliary electrode part, and the main electrode part includes the main casing with medicine liquid storage compartment and electrode storage compartment, and the main electrode board is placed in the electrode storage compartment, and the semi-permeable membrane and the gasket, and the main casing is set up with medicine liquid storage compartment the medicine liquid permeation hole of intercommunication and is used for the medicine liquid mouth of injection or drawing out medicine liquid, and the auxiliary electrode part includes the auxiliary casing and sets up the auxiliary electrode board in the auxiliary casing, and the main casing and auxiliary casing are connected through the bandage and enclose the wearing space, and the main electrode board and auxiliary electrode board are connected with two current output interfaces through the power cord, and this directional liquid medicine guide device can satisfy the local liquid medicine delivery requirement, and the absorption rate of medicine is improved obviously, and the equipment use has the flexibility, the repeatability and the security.