Substantially random ethylene copolymers containing at least 3.0 mole percent of geminally disubstituted olefin monomers are described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and...http://www.google.com/patents/US5866665?utm_source=gb-gplus-sharePatent US5866665 - Copolymers of ethylene and germinally disubstituted olefins