Метилпропен 1) +h2 2) + hbr 3 +br2 4) Полимеризация
СН3-С(СН3)=СН2 + H2 => CH3-CH(CH3)-CH3 CH3-C(CH3)=CH2 + HBr => CH3-C(CH3)(Br)-CH3 CH3-C(CH3)=CH2 + Br2 => CH3-C(CH3)(Br)=CH2Br n(CH3-C(CH3)=CH2) => (-CH2-CH(CH3)-CH2-)n