In comparison with other polyolefin materials, polybutene-1 has a higher level of resistance to strain under continually applied stress over long periods of time. This is known as creep behaviour and

The embroidery insole is completely made by hand techniques and it is some kinds of treasure that has been kept for a long time, which is an art craft that can not be accomplished by any other modern

Polybutene exists in two isomeric forms depending on where the carbon double bond is positioned in the monomer molecule. If it is between the first and second carbon atoms in a linear molecule (butene