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:
May. 19, 1992
Filed:
May. 04, 1990
Applicant:
Inventor:
Ralf-Burkhard Dethlefs, Osnabruck, DE;
Assignee:
Felix Schoeller Jr. GmbH KG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
523200 ; 524706 ; 524783 ; 524785 ; 524836 ; 524847 ; 524855 ; 526 96 ; 526 97 ; 526101 ; 526103 ; 526104 ; 526106 ; 526107 ; 526123 ; 526129 ; 526156 ; 428407 ;
Abstract
There is described a process for the production of pigment/plastic premixes characterized by homogeneous distribution of pigment in a polymer matrix. The invention is based on the polymerization of olefins carried out by means of a process using Ziegler catalyst. Significantly the polymerization occurs on the surface of the pigment particles, after the prior activation of the pigment particles.