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:
Mar. 13, 2007
Filed:
Mar. 04, 2003
John Joseph Rabasco, Allentown, PA (US);
Christian Leonard Daniels, Macungie, PA (US);
David William Horwat, Emmaus, PA (US);
Menas Spyros Vratsanos, Breinigsville, PA (US);
Richard Henry Bott, Macungie, PA (US);
John Joseph Rabasco, Allentown, PA (US);
Christian Leonard Daniels, Macungie, PA (US);
David William Horwat, Emmaus, PA (US);
Menas Spyros Vratsanos, Breinigsville, PA (US);
Richard Henry Bott, Macungie, PA (US);
Air Products Polymers, L.P., Allentown, PA (US);
Abstract
This invention is directed to aqueous-based ethylene-vinyl acetate (EVA) polymer emulsions suited for use in heat seal applications. The EVA polymers of this invention are produced by a relatively low-pressure process, i.e., less than 2000 psig, preferably from about 1000 to about 2000 psig. The aqueous-based EVA based polymer emulsions contain crystalline segments resulting from ethylene linkages and are prepared by emulsion polymerizing ethylene and vinyl acetate, preferably with a carboxylic monomer, in the presence of a stabilizing system containing surfactant or a cellulosic protective colloid in combination with surfactant.