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:
Feb. 14, 1995
Filed:
May. 27, 1994
Shaul M Aharoni, Morris Plains, NJ (US);
AlliedSignal Inc., Morris Township, Morris County, NJ (US);
Abstract
A process for forming extended chain polyesters and block or graft polyesters or copolyesters which comprises the steps of (a) forming an intimate mixture of one or more polyesters, and an effective amount of one or more chain extension reagents, which are phosphorous (III)-containing compounds, and (b) heating said mixture for a time and at a temperature sufficient to form said extended chain, or graft or block copolyester or polyester; wherein the polyester used in step (a) contains no or substantially no substances which comprise elements from groups VA and VIA of the periodic table in elemental form; and wherein preferably, said polyesters conatain one or more elements belonging to groups IIA, IIIA, IVA, VB, IIB, IIIB, IVB, VIII and the lanthanides.