Метилпропен
1) +h2
2) + hbr
3 +br2
4) Полимеризация

СН3-С(СН3)=СН2 + H2 => CH3-CH(CH3)-CH3CH3-C(CH3)=CH2 + HBr => CH3-C(CH3)(Br)-CH3CH3-C(CH3)=CH2 + Br2 => CH3-C(CH3)(Br)=CH2Brn(CH3-C(CH3)=CH2) => (-CH2-CH(CH3)-CH2-)n