The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 1984
Filed:
Mar. 29, 1982
Martin Bottrill, Hertfordshire, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
A polymer composite is produced by polymerizing an olefine monomer in the presence of a catalyst system obtained by treating a filler material with (a) an organic magnesium compound which contains halogen or (b) an organic magnesium compound and thereafter with a halogen-containing compound; and then with a transition metal compound, which is preferably titanium tetrachloride, adding an organic metal activator compound and continuing the polymerization to obtain a composite containing desired proportions of polymer and filler. The filler may be carbon, an aluminosilicate such as mica or talc, or glass-fibre. Homogeneous composites, in respect of the distribution of filler in various size fractions, can be obtained. Composites having good flow characteristics may be obtained. The composites may be formed directly into shaped articles by suitable shaping techniques. Alternatively, the composite may be blended with a polymeric material.