Detail of "70198-29-7"

CAS Number:
70198-29-7
Name:
Butanedioic acid polymer with 4-Hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol
Molecular Structure:
Formula:
(C₁₅H₂₅NO₄)_n^.CH₄O
Molecular Weight:
319.3939
Deleted CAS:
76633-20-0
Synonyms:
Tinuvin 622;Sanol LS 622LD;Sanol LS 622;Sanol LS 662LD;Butanedioic acid,polymers,polymer with 4-hydroxy-2,2,6,6-tetramethyl-1- piperidineethanol;Tinuvin 622D;C 10-622;BUTANEDIOIC ACID, POLYMER WITH 4-HYDROXY-2,2,6,6-TETRAMETHYL-1-PIPERIDINEETHANOL;Butanedioic acid, polymer with4-Hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol;4-Hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol;
Density:
1.18
Boiling Point:
302.6 °C at 760 mmHg
Flash Point:
130.2 °C
Appearance:
Crystal powder&Low Dust

Artificial and natural aging of stabilized low density polyethylene extruded films: Artificial and natural aging of stabilized low density polyethylene extruded films. Komitov, P.; Nikolova, Z.; Kostov, G. (Res. Inst. "Neftokhim", Burgas, Bulg.). Mater. Plast. (Bucharest), 21(1), 34-6 (Romanian) 1984. CODEN: MPLAAM. ISSN: 0025-5289. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Heat and light stabilizers for low-d. Ropoten T (polyethylene) [9002-88-4] were tested on the basis of IR absorbance and mech. properties. Xenotest 450 accelerated aging 3-fold over outdoor aging. Mech. properties and CO group content were preserved during UV irradn. by a mixt. of Chimasorb 81 [1843-05-6] (Ph2CO deriv.) Sanduvor NPU [56557-00-7] (Ni complex), and Tinuvin 622 [70198-29-7] (hindered amine polymer) as white stabilizers, Alurosen [80747-89-3] (phenolic antioxidant), and Sandostab P-EPQ [38613-77-3] (phenolic phosphate heat stabilizer) at total concn. of ~1% after UV irradn. of 1 ng/cm2.

Hindered amine light stabilizers: a proposed photostabilization mechanism: Hindered amine light stabilizers: a proposed photostabilization mechanism. Fairgrieve, Stuart P.; MacCallum, James R. (Chem. Dep., Univ. St. Andrews, Fife KY16 9ST, UK). Polym. Degrad. Stab., 8(2), 107-21 (English) 1984. CODEN: PDSTDW. ISSN: 0141-3910. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) A mechanism for the photooxidative stabilizing effect of hindered amine light stabilizers (e.g., Tinuvin 622 [70198-29-7], Tinuvin 770 [52829-07-9], and Chimasorb 944 [71878-19-8]) is proposed that involves the complexation of trace transition metal impurities. The significance of complex formation between hindered amines and hydroperoxide groups is questioned, and the inability of hindered amines, or their nitroxide derivs., to act as excited-state quenchers is demonstrated.