Task: Translation
Input (Czech): Nosi  katalyz toru je tvo°en alespo  jedn m polymerem .alfa.-olefinu nebo .alfa.-olefin , kter² m  formu   stic se st°edn m rozm rem 5 a  350 mikrometr , jeho  objem p r  tvo°en² p ry o polom ru 100 a  7500 nanometr  je alespo  0,3 cm.sup.3.n./g, a kter² je p°ipraviteln² polymerac  jednoho nebo n kolika .alfa.-olefin  pomoc  katalytick ho syst mu (S) obsahuj c ho katalytickou slou eninu (a) na b zi p°echodov ho kovu n le ej c ho do skupin IIIb, IVb a VIb Periodick ho syst mu prvk  a aktiv tor zvolen² z mno iny zahrnuj c  organohlinit  slou eniny, p°i em  katalytick  slou enina (a) je z sk na v p° tomnosti halogenovan ho  inidla tepeln²m zpracov n m kapaln  hmoty, vznikl  reakc  chloridu titani it ho, p°edem zpracovan ho donorem elektron , s kompozic  (D) odpov daj c  obecn mu vzorci AlR.sub.p.n.(Y).sub.q.n.X.sub.3-(p+q).n., ve kter m R, Y, X, p a q maj  specifick  v²znamy. D le se t²k  zp sobu p° pravy tohoto katalyz toru, katalyz toru pro polymeraci .alfa.-olefin  a jeho pou it .\
Output (English): The invented catalyst support consists of at least one polymer of {alpha}-olefin or {alpha}-olefins, having the form of particles with mean dimension ranging from 5 to 350 micrometers, and the volume of its pores formed by pores with radius in the range of 100 to 7500 nanometers is at least 0.3 cme3/g, and that can be prepared by polymerization of one or several {alpha}-olefins by making use of a catalytic system (S) containing a catalytic compound (a) based on a transient metal pertaining to the groups IIIb, IVb and VIb of the Periodic System of Elements and an activator being selected from the group comprising organoaluminium compounds, whereby the catalytic compound (a) is obtained in the presence of a halogenated agent by heat treatment of a liquid material formed by the reaction of titanium tetrachloride being treated in advance with an electron donor, with composition (D) corresponding to the general formula AlRip(Y)iqXi3-(p+q), in which R, Y, X, p and q have specific meanings. The invention further relates to a process for preparing this catalyst, a catalyst for polymerization of {alpha}-olefins as well as use thereof.