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. 29, 1994
Filed:
Aug. 03, 1992
Applicant:
Inventors:
Amir Famili, Orefield, PA (US);
Lloyd M Robeson, Macungie, PA (US);
James F Nangeroni, Allentown, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
525 57 ; 525 74 ; 525 78 ; 525193 ; 525197 ;
Abstract
A method for preparing a compatible blend of polyolefin and thermoplastic polyvinyl alcohol comprising: (a) melting polyolefin in the initial elements of a melt extruder, (b) adding and melt blending an unsaturated carboxylic acid or anhydride with the melted polyolefin downstream in the extruder, (c) adding peroxide to the melt blend and grafting the unsaturated carboxylic acid or anhydride onto the polyolefin, and (d) melt blending thermoplastic PVOH into the grafted polyolefin/unsaturated carboxylic acid or anhydride melt mixture.