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:
Oct. 02, 1990
Filed:
Apr. 03, 1989
Ananda M Chatterjee, Houston, TX (US);
Dale J Wilpers, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
The present invention includes a coated polyolefin particle and a method for post-reactor stabilization of polyolefins comprising: melting a polyolefin wax; blending at least one additive into the liquid polyolefin wax; fluidizing polyolefin particles to be stabilized with a hot gas; spraying the liquid polyolefin wax containing at least one additive on the fluidized polyolefin particles, and forming at least partially coated polymer particles; maintaining the at least partially coated polymer particles and fluidized polyolefin particles at a temperature which is sufficiently high to prevent the formation of fibers from the wax and which enhances the formation of stabilized polymer particles.