Polyurethane Sizing Agent
Divided into two categories: wet and dry, is a kind of polymer solution system, transparent appearance
or slightly turbid, solid content of about (30-35%). That is to say the (65-70%) is the solvent, simple
said 1 ton of slurry containing 650-700 kg of solvent, for dry that contain so much of toluene and butanone,
amount of toluene is bigger, because the solubility of toluene is better, for the wet is containing 650-700 kg
pure DMF, so for slurry, like toluene, DMF, price changes, to a large extent, affected the cost of slurry, for a
very simple reason dosage for than the major.
Polyurethane synthetic leather and artificial leather prepared by Polyurethane Sizing agent. Polyurethane synthetic
leather is soft and shiny, natural and soft to the touch, the dermis feeling a strong appearance, and substrate
bonding performance excellent, wear resistance, flexural resistance, anti aging, anti mycotic good etc. excellent
mechanical properties, also has cold resistance, good air permeability, easy washing, convenient, inexpensive and
so on, natural leather is the most ideal substitute, widely used in clothing, footwear, bags, furniture, sports and
other industries. In any fields of dermal application, it can be replaced, but also can be used in leather can not be
applied field, leather market is easily affected by animals (cattle, sheep, pigs, etc.) market and disease (such as
mad cow disease) the effect of.
Dry process polyurethane slurry -- in the application process, by heating and evaporation will slurry solvent
evaporation and solvent are mostly with toluene, butanone, evaporate the solvent can not be recycled, not only
pollute the environment, but also caused the unnecessary waste.
The wet process polyurethane slurry -- because the process adopts the DMF water extraction (the reason is an
unlimited solubility in DMF and water), environmental protection, and the production of synthetic leather has good
moisture permeability and air permeability, soft, plump, light, more full of natural leather leather style and appearance.
Therefore, the development of speed is very breathtaking.
