When describing the polymers, composite materials, uses and processes of the disclosure, the terms employed are to be construed by the following definitions, unless a context dictates otherwise. For the disclosure, the following definitions are given:
As used herein, the term “catalyst” refers to a substance that causes a change in the rate of a polymerization reaction. In the present disclosure, it is especially applicable to catalysts suitable for the polymerization of propylene to polypropylene.
As used herein, a “polymer” is a polymeric compound prepared by polymerizing monomers, whether of the same or of a different type. The generic term polymer thus embraces the term homopolymer, usually employed to refer to polymers prepared from only one type of monomer, and the terms copolymer and interpolymer as defined below.
As used herein, a “copolymer”, “interpolymer” and like terms mean a polymer prepared by the polymerization of at least two different types of monomers. These generic terms include polymers prepared from two or more different types of monomer, e.g. terpolymers, tetrapolymers, etc.