TMPMA CAS 31582-46-4 4-Methacrylamido-2,2,6,6-tetramethylpiperidine

4-Methylacrylamide 2,2,6,6-tetramethylpiperidine (CAS: 31582-46-4)
Alias: N - (2,2,6,6-tetramethylpiperidin-4-yl) methacrylamide TMPMA
Molecular formula: C ₁∝ H ₂₄ N ₂ O
Molecular weight: 224.34
Appearance: White or off white crystalline powder
Purity: ≥ 98% (industrial/scientific grade)
1、 Core physical and chemical properties
Melting point: approximately 118-122 ° C
Boiling point: 328 ° C (760 mmHg)
Flash point: 152 ° C
Solubility: soluble in organic solvents such as methanol, ethanol, acetone, dichloromethane, etc; Slightly soluble in water
Structural characteristics: The molecule contains hindered amine pyridine ring (photo stable/antioxidant) and methyl acrylamide double bond (polymerizable), belonging to reactive hindered amine light stabilizer (HALS)
2、 Synthesis method
Prepared by amidation reaction of 4-amino-2,2,6,6-tetramethylpiperidine and methacrylic anhydride catalyzed by triethylamine/pyridine, with a yield of about 85-90%.
3、 Main purpose
Reactive light stabilizers: copolymerized into polyolefins as monomers PVC、ABS、 Acrylic resin, etc., permanently bonded polymer chain, anti migration, anti extraction, improving the weather resistance/anti-aging life of materials.
Functional polymer monomer: synthetic antioxidant/light stable polymer, used for outdoor coatings, agricultural films, automotive components, and weather resistant adhesives.
Biomedical materials: prepare temperature/pH responsive hydrogels and nano gel for drug release, bioseparation and tissue engineering.
Free radical polymerization regulation: As a precursor of nitrogen oxygen free radicals, it is used for controlled free radical polymerization (ATRP/RAFT) to synthesize block/graft copolymers.
4、 Advantages and Characteristics
Reactive bonding: Double bonds participate in polymerization, do not migrate, do not evaporate, and have long-term stability.
Multifunctional: It combines the functions of photostability, antioxidant, and free radical capture.
Good compatibility: It has excellent compatibility with most resins and high processing stability.
Low toxicity and environmental protection: compliant with EU REACH and RoHS, suitable for food contact/medical grade materials.
5、 Packaging and Storage
Packaging: 25kg cardboard drum/lined with plastic bag, or 1kg/5kg aluminum foil bag.
Storage: Store in a cool and dry place, sealed, away from light, moisture, and heat sources; Shelf life of 24 months