It can resist the erosion of most acids and alkalis, has low water absorption, and can still maintain its softness at low temperature. Insoluble in water, slightly soluble in hydrocarbons, toluene, etc.
The production process of eye drop bottle: there are mainly two kinds of high-pressure tube method and kettle method. From the perspective of development, in order to reduce the reaction temperature and pressure, the tubular process generally adopts a low-temperature high-activity initiator to initiate the polymerization system, using high-purity ethylene as the main raw material, propylene/propane, etc. as the density adjuster, using high-activity initiators The polymerization reaction is carried out under the conditions of about 200°C to 330°C and 150-300 MPa. The molten polymer that initiates polymerization in the reactor must be cooled and separated at high pressure, medium pressure and low pressure. Then, it is sent to the inlet of the high pressure (30MPa) compressor, while the low pressure circulating gas is cooled and separated and sent to the low pressure (0.5MPa) compressor for recycling. During granulation, enterprises can add appropriate additives according to different application fields, and the granules are packaged and shipped out.