BUTYL


Meaning of BUTYL in English

trademark

— used for any of a class of synthetic rubbers that are made by polymerizing isobutylene with a small proportion usually of isoprene at a low temperature (as -140° F) with aluminum chloride as catalyst, that are characterized by low permeability to gases and good resistance to oxygen, ozone, and many chemicals, and that are used especially in inner tubes for tires

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.