183959-05-9

Basic information

• Product Name: 4-Piperidinol, 1-(2-hydroxy-1-phenylethoxy)-2,2,6,6-tetramethyl-
• CAS NO: 183959-05-9
• Molecular Formula: C17H27NO3
• Molecular Weight: 293.406
• Mol File: 183959-05-9.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 4-Piperidinol, 1-(2-hydroxy-1-phenylethoxy)-2,2,6,6-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Piperidinol, 1-(2-hydroxy-1-phenylethoxy)-2,2,6,6-tetramethyl-(183959-05-9)
• EPA Substance Registry System: 4-Piperidinol, 1-(2-hydroxy-1-phenylethoxy)-2,2,6,6-tetramethyl-(183959-05-9)

Safety Data

• Hazardous Substances Data: 183959-05-9(Hazardous Substances Data)

Upstream product

• 100-42-5 styrene 
• 470689-10-2 benzoic acid 2-(4-hydroxy-2,2,6,6-tetramethyl-piperidin-1-yloxy)-2-phenyl-ethyl ester 
• 45985-24-8 TEMPOL 
• 3225-26-1 4-(benzyloxycarbonyl)-2,2,6,6-tetramethylpiperidine-1-oxyl 

Downstream Products

• 1290059-22-1 4-methacryloyloxy-1-((2'-methacryloyloxy-1'-phenylethyl)oxy)-2,2,6,6-tetramethylpiperidine 
• 507268-09-9 propyl-carbamic acid 2,2,6,6-tetramethyl-1-(1-phenyl-2-propylcarbamoyloxy-ethoxy)-piperidin-4-yl ester 

Relevant articles and documents

Triggered Structural Control of Dynamic Covalent Aromatic Polyamides: Effects of Thermal Reorganization Behavior in Solution and Solid States

Thermally rearrangeable aromatic polyamides (TEMPO-PA) and random copolyamides (TEMPO-PA-COOH) incorporating alkoxyamine moieties in the main chain were synthesized, and the effects of thermal reorganization behavior on their solution and solid-state structures were investigated. The hydrodynamic radius in solution decreased as the solution temperature increased because of the dissociation of the alkoxyamine unit. Additionally, the dry density of the thin films decreased as the fabrication temperature increased because of the suppression of polymer aggregation caused by the thermally induced radical crossover reaction. In addition, at the film surface of the random copolyamide containing hydrophobic TEMPO and hydrophilic 3,5-diaminobenzoic acid (DABA) units, the hydrophilicity decreased as the fabrication temperature increased. This is because hydrophobic TEMPO and hydrophilic DABA units tend to be discretely aggregated near the film surface to minimize the surface energy and suppress the hydrogen bonding via a radical crossover reaction during the thin-film fabrication process. The present study clearly shows that both the solution structure and the solid-state molecular aggregation structure of the dynamic covalent polymers can be easily controlled by a thermal trigger, and it provides a new method for controlling the higher-order structure of polymer solutions and solids.

Polyurethane macroinitiator for controlled monomer insertion of styrene

Polyurethane containing alkoxyamine units in the main chain were prepared by polyaddition of diisocyanate with TEMPO-based diol. Radical polymerization of styrene was carried out in bulk with TEMPO-based polyurethane as macroinitiator. GPC, NMR, and IR data revealed that the insertion reaction was accurately controlled to afford the segmented copolymers composed of both urethane groups and polystyrene segments. From the results of model polymerization, it is inferred that the well-defined polystyrene chains were inserted into the macroinitiator. The obtained polymers showed quite different solubility in solvents compared with the macroinitiator and styrene homopolymer. The solubility in polar solvents decreases gradually with increasing inserted polystyrene chain length.