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. 24, 1986
Filed:
Nov. 13, 1984
Winston J Jackson, Jr, Kingsport, TN (US);
Herbert F Kuhfuss, Kingsport, TN (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Poly(urea-amides) having an inherent viscosity (I.V.) of 0.4 to about 1.2, and having the repeating units ##STR1## wherein with respect to the total moles of II and III, the mol % of II is 5 to 80, preferably 20 to 60, and conversely the mol % of III is 20 to 95, preferably 40 to 80, R is straight chain alkylene of 3 to 10 carbons, preferably 4 carbons, with the proviso that when R contains 3 carbons, not over 50 mol % thereof is present, up to 40 mol %, preferably 0 mil % of R is aromatic, and wherein up to 30 mol %, preferably 0 mol % of I is the para isomer, the remainder being the meta isomer, are valuable for the manufacture of plastics, fibers, films and other shaped objects, especially multilayer laminated structures which have excellent resistance to the transmission of oxygen, carbon dioxide, and other gases.