The composition, PE tube 100, the manufacturing process of a pipe PE 100 and process for the polymerization of the composition.

摘要

The composition, PE tube 100, the manufacturing process of a pipe PE 100 and process for the polymerization of the composition of the present invention is directed to homopolymers and copolymers of mono - 1 - olefin, a method of preparing such polymers and the uses of such polymers.The polymers of this invention are formed is placed in contact with at least one mono - 1 - olefin having from 2 to about 20 carbon atoms per molecule with at least one comonomer of mono - 1 - olefin having from 2 to about 10 carbon atoms per molecule in a zone of R. Eau00e7u00e3o in conditions of polymerization in the presence of a hydrocarbon diluent.A system catalyst and a co catalyst. The catalyst system of this invention comprises a source of chromium or a support aluminofosfato has a molar ratio of phosphorus to aluminum less than approximately 0.3. Then, the catalyst system is treated with less than about 7 percent by weight of a fluoride based on weight of the support and is calcined.The co catalyst is selected from among compounds of trialquilboro compounds, triarilboro compounds, alkyl aluminum and combinations thereof. In another aspect of the present invention, ethylene copolymers are used to produce PE pipes - 100.These copolymers are formed by placing it in contact with at least one ethylene comonomer of mono - 1 - olefin having from 2 to about 10 carbon atoms per molecule in a reaction zone under conditions of polymerization in the presence of a hydrocarbon diluent, a system catalyzes Pain and a co catalyst.In addition, the comonu00f3neros can be selected among mono - L - olefins having 4 to 10 carbon atoms such as 1 - hexene, 1-butene, 4 - methyl - 1 - pentene, 1-octene and 1-decene.Then these copolymers of ethylene may be employed for the production of PE pipes with small diameters 100 diameters and having above 106,68 cm, substantially without yielding or suffer other gravitational deformation. Ethylene copolymers are described and 1 - hexene which are used to produce the PE tube 100.