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. 21, 1983
Filed:
Jun. 29, 1981
Applicant:
Inventor:
Thomas Hassall, Jr, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08K / ;
U.S. Cl.
CPC ...
524377 ; 524127 ; 524369 ; 525 58 ; 525 62 ; 528494 ;
Abstract
A process for the preparation of a substantially dust-free PVA powder comprising contacting the PVA with about 0.5 percent to 4.0 percent polyglycol, preferably about 0.5 percent to 2.0 percent polyglycol, based on the weight of the PVA, and the product therefrom.