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:
Dec. 16, 1986
Filed:
Jul. 22, 1985
Robert W Layer, Cuyahoga Falls, OH (US);
John T Lai, Broadview Heights, OH (US);
Pyong N Son, Akron, OH (US);
The B. F. Goodrich Company, Akron, OH (US);
Abstract
A particular branched chain polyalkylenepolyamine ('PAPA') having plural amine groups including a secondary amine group intermediate terminal free primary amine groups (that is, neither one is hindered), and having at least two C atoms between each group, may be selectively cyclized with a ketoform reaction to form a polysubstituted piperazinone ('PSP'), with specific directivity. Such PSPs are linked to a triazine nucleus to yield piperazinone-triazine ('PIP-T') compounds which are excellent stabilizers for polyolefins and other light-degradable polymers. Certain acyclic polyalkylenepolyamines may have a PIP-T substituent at each N atom forming pendant PIP-Ts ('P[PIP-T]' for brevity) which are also excellent stabilizers, and like some of the PIP-Ts, some P[PIP-T]s provide photostabilization without noticeably interfering with the color of films and fibers provided by even pastel-colored pigments and dyes.