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:
May. 08, 1984
Filed:
Sep. 07, 1982
Applicant:
Inventors:
Richard R Smith, Akron, OH (US);
Mellis M Kelley, Akron, OH (US);
Assignee:
The Goodyear Tire & Rubber Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528274 ; 525437 ; 528286 ; 5282953 ; 528300 ; 528302 ; 528305 ; 5283086 ; 5283087 ;
Abstract
This invention relates to polyethylene terephthalate and copolymers thereof having high clarity and process for making the same. The invention provides a process for making PET using protonic acid catalysts which result in a polymer having a level of haze which is lower than has heretofore been attainable, using conventional metallic catalysts. Further, the polyesters so produced have a lower melt temperature which improves the processability.