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:
Jun. 20, 2000
Filed:
Feb. 19, 1998
Applicant:
Inventors:
Nancy D Arabinick, Bensalem, PA (US);
John L Burba, III, Newtown, PA (US);
William O Dalton, Chadds Ford, PA (US);
Assignee:
FMC Corporation, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525344 ; 5253339 ;
Abstract
The molecular weight of a polyolefin such as polypropylene is reduced, as evidenced by lowered viscosity and increased melt flow rate, by treatment with an inorganic peroxygen selected from metal persulfates, ammonium persulfates, and any mixtures thereof. The treatment avoids or minimizes the color or odor attendant treatment with organic peroxygens and the toxic products of organic persulfate decomposition, and avoids the special handling required with organic peroxides.