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. 24, 2005
Filed:
Dec. 02, 2002
Applicants:
Paul Brian Adams, Hamilton, OH (US);
Gene Kelly Norris, West Chester, OH (US);
Inventors:
Paul Brian Adams, Hamilton, OH (US);
Gene Kelly Norris, West Chester, OH (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K005/36 ; C08K005/37 ;
U.S. Cl.
CPC ...
Abstract
Halogen-containing polymer compositions containing a heat stabilizer comprising a latent mercaptan, a zinc salt, and a free mercaptan as a separate entity are protected during processing by the degradation products of the latent (i.e., blocked) mercaptan. A free mercaptan is among those products. The separate free mercaptan (i.e., an alien free mercaptan) enhances the activity of the latent mercaptan in a synergistic manner.