| 摘要 |
<p>Stress-crack resistant polymers of from about 40 to 60 mol percent ethylene, about 60 to 40 mol percent of a halogenated comonomer selected from the group consisting of tetrafluoroethylene and chlorotrifluoroethylene and mixtures thereof and optionally about 0.1 to 10 mol percent of a termonomer selected from the group consisting of 3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, the side chain being aromatic or having its elements bonded by a single bond only, and mixtures thereof, and containing critically defined high and low molecular weight components which exhibit improved high temperature properties.</p> |
