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:
Nov. 03, 1998
Filed:
May. 04, 1998
Applicant:
Inventor:
Jeffrey J Strebel, Cincinnati, OH (US);
Assignee:
Millennium Petrochemicals Inc., Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B29D / ;
U.S. Cl.
CPC ...
264 457 ; 264 453 ; 264 455 ; 264126 ; 264310 ; 521 51 ; 521134 ;
Abstract
Improved compositions useful for the production of foamed rotomolded articles are provided. The compositions of the invention are comprised of a first thermoplastic resin component which is an ethylene polymer in pellet form containing a foaming agent and a second thermoplastic resin component which is a powder consisting of a mixture of different particle size and melt index ethylene polymers. An improved process for producing foamed rotomolded articles having uniformly foamed interiors and smooth exterior skins which are substantially free of surface defects is also provided.