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:
Aug. 11, 1981
Filed:
Sep. 15, 1980
Charles V Murphy, Wilmington, DE (US);
Robert J Statz, Kennett Square, PA (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Wax-free hot melt adhesive compositions based on a copolymer of an .alpha.-olefin, especially ethylene, with an unsaturated carboxylic acid, especially an .alpha.,.beta.-unsaturated carboxylic acid, or with maleic anhydride and optionally also with another unsaturated carboxylic acid or ester; a tall oil rosin; and a hydrocarbon oil provide good quality bonds. When the level of oil is less than 15%, particularly up to about 13%, there is no oil exudation. The hot melt adhesive compositions of this invention have a good melt viscosity stability when an antioxidant, especially a hindered phenol or organic phosphite, is added. These compositions are useful for heat sealing cartons and for similar applications. Formulations containing tall oil rosins and processing oils approved by the Food and Drug Administration can be readily prepared.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile