Reactive Tetramethylpiperidine-Containing Poly(oxypropylenediamines) as Light Stabilizers

A tetramethylpiperidine-containing poly(oxypropylenediamine) was prepared by propoxylation and consequent amination of 2,2,6,6-tetramethyl-4-aminopiperidine (TMAP). The propoxylation required no catalyst for adding the first 2 mol of propylene oxide (PO) to TMAP and a potassium catalyst for further...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 1997-05, Vol.36 (5), p.1944-1947
Main Authors: Lin, Jiang-Jen, Cuscurida, Michael, Waddill, Harold G
Format: Article
Language:English
Subjects:
Applied sciences
Compounding ingredients
Exact sciences and technology
Polymer industry, paints, wood
Stabilizers (antioxydants, antiozonants, etc.)
Technology of polymers
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Summary:A tetramethylpiperidine-containing poly(oxypropylenediamine) was prepared by propoxylation and consequent amination of 2,2,6,6-tetramethyl-4-aminopiperidine (TMAP). The propoxylation required no catalyst for adding the first 2 mol of propylene oxide (PO) to TMAP and a potassium catalyst for further PO additions to produce a desired molecular weight of polyol. The amination of polyols by ammonia converted terminal hydroxyl groups into primary amines. The mixtures of TMAP-containing poly(ether amine) and Jeffamine D-230 or T-403 were used as curing agents for epoxy resin. Through the curing process, the TMAP functionality was incorporated into the epoxy backbone as pendent groups. The resulting polymers exhibited good UV stability. The overall process of preparing this active TMAP-containing poly(ether amine) and its use for epoxy UV stability are demonstrated.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie960521o